General ics :: Microprocessor support ics

Microprocessor support ICs


Z80CTC, Z8430

Z80 Counter-Timer Circuit.
        +-----+--+-----+
     D4 |1    +--+   28| D3
     D5 |2           27| D2
     D6 |3           26| D1
     D7 |4           25| D0
    GND |5           24| VCC
    /RD |6           23| CLK0 TRG0
ZC0 TO0 |7   Z8430   22| CLK1 TRG1
ZC1 TO1 |8    CTC    21| CLK2 TRG2
ZC2 TO2 |9           20| CLK3 TRG3
  /IORQ |10          19| A1
    IEO |11          18| A0
   /INT |12          17| /RST
    IEI |13          16| /CE
    /M1 |14          15| CLK
        +--------------+

Z80DART, Z8470

Z80 dual async/sync serial I/O.
Z8470 (DART) has no synchronous capabilities.
        +-----+--+-----+
     D1 |1    +--+   40| D0
     D3 |2           39| D2
     D5 |3           38| D4
     D7 |4           37| D6
   /INT |5           36| /IORQ
    IEI |6           35| /CE
    IEO |7           34| A0 B/A
    /M1 |8           33| A1 C/D
    VCC |9           32| /RD
/W_RDYA |10   Z8440  31| GND
 /SYNCA |11   SIO-0  30| /W_RDYB
   RxDA |12          29| /SYNCB
  /RxCA |13          28| RxDB
  /TxCA |14          27| /RxTxCB
   TxDA |15          26| TxDB
  /DTRA |16          25| /DTRB
  /RTSA |17          24| /RTSB
  /CTSA |18          23| /CTSB
  /DCDA |19          22| /DCDB
    CLK |20          21| /RST
        +--------------+

Z80DMA, Z8410

Z80 DMA controller.
          +-----+--+-----+
       A5 |1    +--+   40| A6
       A4 |2           39| A7
       A3 |3           38| IEI
       A2 |4           37| /INT /PULSE
       A1 |5           36| IEO
       A0 |6           35| D0
      CLK |7           34| D1
      /WR |8           33| D2
      /RD |9           32| D3
    /IORQ |10   Z8410  31| D4
      VCC |11    DMA   30| GND
    /MREQ |12          29| D5
     /BAO |13          28| D6
     /BAI |14          27| D7
   /BUSRQ |15          26| /M1
/CE /WAIT |16          25| RDY
      A15 |17          24| A8
      A14 |18          23| A9
      A13 |19          22| A10
      A12 |20          21| A11
          +--------------+

Z80PIO, Z8420

Z80 parallel I/O.
       +-----+--+-----+
    D2 |1    +--+   40| D3
    D7 |2           39| D4
    D6 |3           38| D5
   /CE |4           37| /M1
C/D A1 |5           36| /IORQ
B/A A0 |6           35| /RD
   PA7 |7           34| PB7
   PA6 |8           33| PB6
   PA5 |9           32| PB5
   PA4 |10   Z8420  31| PB4
   GND |11    PIO   30| PB3
   PA3 |12          29| PB2
   PA2 |13          28| PB1
   PA1 |14          27| PB0
   PA0 |15          26| VCC
 /ASTB |16          25| CLK
 /BSTB |17          24| IEI
  ARDY |18          23| /INT
    D0 |19          22| IEO
    D1 |20          21| BRDY
       +--------------+

Z80SIO, Z80SIO0, Z8440, Z8470

Z80 dual async/sync serial I/O.
Z8470 (DART) has no synchronous capabilities.
        +-----+--+-----+
     D1 |1    +--+   40| D0
     D3 |2           39| D2
     D5 |3           38| D4
     D7 |4           37| D6
   /INT |5           36| /IORQ
    IEI |6           35| /CE
    IEO |7           34| A0 B/A
    /M1 |8           33| A1 C/D
    VCC |9           32| /RD
/W_RDYA |10   Z8440  31| GND
 /SYNCA |11   SIO-0  30| /W_RDYB
   RxDA |12          29| /SYNCB
  /RxCA |13          28| RxDB
  /TxCA |14          27| /RxTxCB
   TxDA |15          26| TxDB
  /DTRA |16          25| /DTRB
  /RTSA |17          24| /RTSB
  /CTSA |18          23| /CTSB
  /DCDA |19          22| /DCDB
    CLK |20          21| /RST
        +--------------+

MAX703

uP supervisor circuit with battery backup.
/RST remains low for 200ms after VCC exceeds 4.65V. On power failure VCCo is connected to VBAT, PFI and /MR are disabled, /RST and /PFO are low.
     +---+--+---+
VCCo |1  +--+  8| VBAT
 VCC |2  MAX   7| /RST
 GND |3  703   6| /MR
 PFI |4        5| /PFO
     +----------+

765

Floppy disk controller.
       +-----+--+-----+
   RST |1    +--+   40| VCC
   /RD |2           39| /RW SEEK
   /WR |3           38| LCT DIR
   /CE |4           37| FR  STEP
D/S A0 |5           36| HDL
    D0 |6           35| RDY
    D1 |7           34| WP  TS
    D2 |8           33| FLT TR00
    D3 |9           32| PS0
    D4 |10   765    31| PS1
    D5 |11   FDC    30| WDA
    D6 |12          29| US0
    D7 |13          28| US1
   DRQ |14          27| HD
 /DACK |15          26| MFM
    TC |16          25| WE
   IDX |17          24| VCO SYNC
   INT |18          23| RDD
   CLK |19          22| RDW
   GND |20          21| WCLK
       +--------------+

Z80SIO1, Z8441

Z80 dual async/sync serial I/O (bonding option #1).
        +-----+--+-----+
     D1 |1    +--+   40| D0
     D3 |2           39| D2
     D5 |3           38| D4
     D7 |4           37| D6
   /INT |5           36| /IORQ
    IEI |6           35| /CE
    IEO |7           34| A0 B/A
    /M1 |8           33| A1 C/D
    VCC |9           32| /RD
/W_RDYA |10   Z8441  31| GND
 /SYNCA |11   SIO-1  30| /W_RDYB
   RxDA |12          29| /SYNCB
  /RxCA |13          28| RxDB
  /TxCA |14          27| /RxCB
   TxDA |15          26| /TxCB
  /DTRA |16          25| TxDB
  /RTSA |17          24| /RTSB
  /CTSA |18          23| /CTSB
  /DCDA |19          22| /DCDB
    CLK |20          21| /RST
        +--------------+

Z80SIO2, Z8442

Z80 dual async/sync serial I/O (bonding option #2).
         +-----+--+-----+
      D1 |1    +--+   40| D0
      D3 |2           39| D2
      D5 |3           38| D4
      D7 |4           37| D6
    /INT |5           36| /IORQ
     IEI |6           35| /CE
     IEO |7           34| A0 B/A
     /M1 |8           33| A1 C/D
     VCC |9           32| /RD
 /W_RDYA |10   Z8442  31| GND
  /SYNCA |11   SIO-2  30| /W_RDYB
    RxDA |12          29| RxDB
   /RxCA |13          28| /RxCB
   /TxCA |14          27| /TxCB
    TxDA |15          26| TxDB
   /DTRA |16          25| /DTRB
   /RTSA |17          24| /RTSB
   /CTSA |18          23| /CTSB
   /DCDA |19          22| /DCDB
     CLK |20          21| /RST
         +--------------+

SAA1064

I2C 4 digit common-anode LED driver.
I2C address is 01110xx where xx can be specified by the voltage on the ADR input (GND=00 3/8VCC=01 5/8VCC=10 VCC=11).
     +---+--+---+
 ADR |1  +--+ 24| SCL
Cext |2       23| SDA
 1Y8 |3       22| 2Y8
 1Y7 |4       21| 2Y7
 1Y6 |5       20| 2Y6
 1Y5 |6       19| 2Y5
 1Y4 |7  1064 18| 2Y4
 1Y3 |8       17| 2Y3
 1Y2 |9       16| 2Y2
 1Y1 |10      15| 2Y1
 MX1 |11      14| MX2
 GND |12      13| VCC
     +----------+

DS1202

Real-time clock with 3-wire serial interface and 24 bytes RAM.
    +---+--+---+
    |1  +--+  8| VCC
 X1 |2   DS   7| CLK
 X2 |3  1202  6| DQ
GND |4        5| /RST
    +----------+

DS1210

Nonvolatile SRAM controller chip.
TOL selects power-fail VCC level, based on 5% tolerance when 0 or 10% tolerance when 1.
      +---+--+---+           +---+----*---+
 VCCo |1  +--+  8| VCC       |/EN|VCC |/Y |
VBAT1 |2   DS   7| VBAT2     +===+====*===+
  TOL |3  1210  6| /Y        | 1 | OK | 1 |
  GND |4        5| /EN       | 0 | OK | 0 |
      +----------+           | X | LO | 1 |
                             +---+----*---+

DS1211

1-of-8 inverting decoder/nonvolatile SRAM controller chip.
TOL selects power-fail VCC level, based on 5% tolerance when 0 or 10% tolerance when 1. The Dallas Semi data book suggests this is actually a repackaged DS1212.
      +---+--+---+           +---+---+---+---+----*---+---+---+---+---+
VBAT1 |1  +--+ 20| VCC       |/EN| S2| S1| S0|VCC |/Y0|/Y1|...|/Y7|/PF|
 VCCo |2       19| VBAT2     +===+===+===+===+====*===+===+===+===+===+
  TOL |3       18| /EN       | X | X | X | X | LO | 1 | 1 | 1 | 1 | 0 |
  /PF |4       17| /Y0       | 1 | 0 | 0 | 0 | OK | 0 | 1 | 1 | 1 | 1 |
  /Y7 |5   DS  16| /Y1       | 0 | 0 | 0 | 1 | OK | 1 | 0 | 1 | 1 | 1 |
  /Y6 |6  1211 15| /Y2       | 0 | . | . | . | OK | 1 | 1 | . | 1 | 1 |
   S2 |7       14| /Y3       | 0 | 1 | 1 | 1 | OK | 1 | 1 | 1 | 0 | 1 |
   S1 |8       13|           +---+---+---+---+----*---+---+---+---+---+
   S0 |9       12| /Y4
  GND |10      11| /Y5
      +----------+

DS1212

1-of-16 inverting decoder/nonvolatile SRAM controller chip.
TOL selects power-fail VCC level, based on 5% tolerance when 0 or 10% tolerance when 1.
      +-----+--+-----+        +---+---+---+---+---+----*---+---+---+----+---+
VBAT1 |1    +--+   28| VCC    |/EN| S3| S2| S1| S0|VCC |/Y0|/Y1|...|/Y15|/PF|
 VCCo |2           27| VBAT2  +===+===+===+===+===+====*===+===+===+====+===+
  TOL |3           26| /EN    | X | X | X | X | X | LO | 1 | 1 | 1 | 1  | 0 |
  /PF |4           25| /Y0    | 1 | 0 | 0 | 0 | 0 | OK | 0 | 1 | 1 | 1  | 1 |
 /Y15 |5           24| /Y1    | 0 | 0 | 0 | 0 | 1 | OK | 1 | 0 | 1 | 1  | 1 |
 /Y14 |6           23| /Y2    | 0 | . | . | . | . | OK | 1 | 1 | . | 1  | 1 |
 /Y13 |7     DS    22| /Y3    | 0 | 1 | 1 | 1 | 1 | OK | 1 | 1 | 1 | 0  | 1 |
 /Y12 |8    1212   21| /Y4    +---+---+---+---+---+----*---+---+---+----+---+
 /Y11 |9           20| /Y5
   S3 |10          19| /Y6
   S2 |11          18| /Y7
   S1 |12          17| /Y8
   S0 |13          16| /Y9
  GND |14          15| /Y10
      +--------------+

DS1285, DS1287, DS1287A

Real-time clock with 50 bytes RAM.
DS1287(A) has built-in quartz crystal and lihium battery, and therefore the X1, X2 and VBAT pins are no-connect. On the (older) DS1287 the /RCLR pin is no-connect as well.
    +-----+--+-----+
MOT |1    +--+   24| VCC
 X1 |2           23| SQW
 X2 |3           22|
AD0 |4           21| /RCLR
AD1 |5           20| VBAT
AD2 |6   DS1285  19| /INT
AD3 |7           18| /RST
AD4 |8           17| DS
AD5 |9           16| GND
AD6 |10          15| R//W
AD7 |11          14| AS
GND |12          13| /CE
    +--------------+

Z16C30

Dual universal serial controller.
PLCC68
+---------------+---------------+---------------+---------------+
| 10 /RxACKA    | 27 /TxREQA    | 44 /RxREQB    | 61 /TxACKB    |
| 11 /INTA      | 28 /RxCA      | 45 VCC        | 62 /PITACK    |
| 12 IEIA       | 29 RxDA       | 46 GND        | 63 R//W       |
| 13 IEOA       | 30 /DCDA      | 47 AD15       | 64 /WR        |
| 14 GND        | 31 /TxCA      | 48 AD14       | 65 /RD        |
| 15 VCC        | 32 TxDA       | 49 AD13       | 66 /DS        |
| 16 AD0        | 33 /CTSA      | 50 AD12       | 67 /AS        |
| 17 AD1        | 34 GND        | 51 AD11       | 68 VCC        |
| 18 AD2        | 35 GND        | 52 AD10       |  1 VCC        |
| 19 AD3        | 36 GND        | 53 AD9        |  2 VCC        |
| 20 AD4        | 37 /CTSB      | 54 AD8        |  3 /RST       |
| 21 AD5        | 38 TxDB       | 55 VCC        |  4 /CE        |
| 22 AD6        | 39 /TxCB      | 56 GND        |  5 D//C       |
| 23 AD7        | 40 /DCDB      | 57 IEOB       |  6 A//B       |
| 24 GND        | 41 RxDB       | 58 IEIB       |  7 /SITACK    |
| 25 VCC        | 42 /RxCB      | 59 /INTB      |  8 /WAIT//RDY |
| 26 /RxREQA    | 43 /TxREQB    | 60 /RxACKB    |  9 /TxACKA    |
+---------------+---------------+---------------+---------------+

Z16C33

Mono universal serial controller with ISDN time slot assigner.
PLCC68
+---------------+---------------+---------------+---------------+
| 10 /RxACK     | 27 /TxREQ     | 44 PORT7      | 61            |
| 11 /INT       | 28 /RxC       | 45 VCC        | 62 /PITACK    |
| 12 IEI        | 29 RxD        | 46 GND        | 63 R//W       |
| 13 IEO        | 30 /DCD       | 47 AD15       | 64 /WR        |
| 14 GND        | 31 /TxC       | 48 AD14       | 65 /RD        |
| 15 VCC        | 32 TxD        | 49 AD13       | 66 /DS        |
| 16 AD0        | 33 /CTS       | 50 AD12       | 67 /AS        |
| 17 AD1        | 34 GND        | 51 AD11       | 68 VCC        |
| 18 AD2        | 35 GND        | 52 AD10       |  1 VCC        |
| 19 AD3        | 36 GND        | 53 AD9        |  2 VCC        |
| 20 AD4        | 37 PORT0      | 54 AD8        |  3 /RST       |
| 21 AD5        | 38 PORT1      | 55 VCC        |  4 /CE        |
| 22 AD6        | 39 PORT2      | 56 GND        |  5 D//C       |
| 23 AD7        | 40 PORT3      | 57            |  6 PS         |
| 24 GND        | 41 PORT4      | 58            |  7 /SITACK    |
| 25 VCC        | 42 PORT5      | 59            |  8 /WAIT//RDY |
| 26 /RxREQ     | 43 PORT6      | 60            |  9 /TxACK     |
+---------------+---------------+---------------+---------------+

6520, 6821

6800 and 6502 families peripheral interface adapters.
      +-----+--+-----+
  GND |1    +--+   40| CA1
  PA0 |2           39| CA2
  PA1 |3           38| /IRQA
  PA2 |4           37| /IRQB
  PA3 |5           36| RS0
  PA4 |6           35| RS1
  PA5 |7           34| /RST
  PA6 |8           33| D0
  PA7 |9           32| D1
  PB0 |10  MC6821  31| D2
  PB1 |11   6520   30| D3
  PB2 |12          29| D4
  PB3 |13          28| D5
  PB4 |14          27| D6
  PB5 |15          26| D7
  PB6 |16          25| E (P2)
  PB7 |17          24| CE1
  CB1 |18          23| /CE2
  CB2 |19          22| CE0
  VCC |20          21| R//W
      +--------------+

6530

6502 family versatile interface adapter.
         +-----+--+-----+
     GND |1    +--+   40| PA1
     PA0 |2           39| PA2
  E (P2) |3           38| PA3
      RS |4           37| PA4
      A9 |5           36| PA5
      A8 |6           35| PA6
      A7 |7           34| PA7
      A6 |8           33| DB0
     R/W |9           32| DB1
      A5 |10   6530   31| DB2
      A4 |11          30| DB3
      A3 |12          29| DB4
      A2 |13          28| DB5
      A1 |14          27| DB6
      A0 |15          26| DB7
    /RST |16          25| PB0
/IRQ PB7 |17          24| PB1
 CS1 PB6 |18          23| PB2
 CS2 PB5 |19          22| PB3
     VCC |20          21| PB4
         +--------------+

6551

6502 family asynchronous serial interface controller.
     +-----+--+-----+
 GND |1    +--+   28| R//W
 CE0 |2           27| CLK
/CE1 |3           26| /IRQ
/RST |4           25| D7
 RxC |5           24| D6
  X1 |6           23| D5
  X0 |7    6551   22| D4
/RTS |8           21| D3
/CTS |9           20| D2
 TxD |10          19| D1
/DTR |11          18| D0
 RxD |12          17| /DSR
 RS0 |13          16| /DCD
 RS1 |14          15| VCC
     +--------------+

6818

Real-time clock with 50 bytes RAM.
    +-----+--+-----+
    |1    +--+   24| VCC
 X1 |2           23| SQW
 X2 |3           22|
AD0 |4           21| /RCLR
AD1 |5           20| VBAT
AD2 |6   146818  19| /INT
AD3 |7           18| /RST
AD4 |8           17| DS
AD5 |9           16| GND
AD6 |10          15| R//W
AD7 |11          14| AS
GND |12          13| /CE
    +--------------+

6845

6800 family CRT Controller.
       +-----+--+-----+
   GND |1    +--+   40| VSYNC
  /RST |2           39| HSYNC
 LPSTB |3           38| RA0
   MA0 |4           37| RA1
   MA1 |5           36| RA2
   MA2 |6           35| RA3
   MA3 |7           34| RA4
   MA4 |8           33| D0
   MA5 |9           32| D1
   MA6 |10   6845   31| D2
   MA7 |11   CRTC   30| D3
   MA8 |12          29| D4
   MA9 |13          28| D5
  MA10 |14          27| D6
  MA11 |15          26| D7
  MA12 |16          25| /CE
  MA13 |17          24| A0
DISPEN |18          23| IORQ
CURSOR |19          22| R/W
   VCC |20          21| CLK
       +--------------+

6850

6800 family asynchronous communications interface.
      +-----+--+-----+
  GND |1    +--+   24| /CTS
  RxD |2           23| /DCD
RxCLK |3           22| D0
TxCLK |4           21| D1
 /RTS |5           20| D2
  TxD |6           19| D3
 /IRQ |7    6850   18| D4
  CE0 |8           17| D5
 /CE2 |9           16| D6
  CE1 |10          15| D7
   RS |11          14| E
  VCC |12          13| R//W
      +--------------+

6852

6800 family synchronous serial data adapter.
        +-----+--+-----+
    GND |1    +--+   24| /CTS
    RxD |2           23| /DCD
  RxCLK |3           22| D0
  TxCLK |4           21| D1
SM /DTR |5           20| D2
    TxD |6           19| D3
   /IRQ |7    6852   18| D4
    TUF |8           17| D5
   /RST |9           16| D6
    /CE |10          15| D7
     RS |11          14| E
    VCC |12          13| R//W
        +--------------+

8243

8048 Port expander.
     +-----+--+-----+
P5.0 |1    +--+   24| VCC
P4.0 |2           23| P5.1
P4.1 |3           22| P5.2
P4.2 |4           21| P5.3
P4.3 |5           20| P6.0
 /CE |6           19| P6.1
PROG |7    8243   18| P6.2
P2.3 |8           17| P6.3
P2.2 |9           16| P7.3
P2.1 |10          15| P7.2
P2.0 |11          14| P7.1
 GND |12          13| P7.0
     +--------------+

8250

Asynchronous serial interface controller.
        +-----+--+-----+
     D0 |1    +--+   40| VCC
     D1 |2           39| /RI
     D2 |3           38| /DCD
     D3 |4           37| /DSR
     D4 |5           36| /CTS
     D5 |6           35| MR
     D6 |7           34| /OUT1
     D7 |8           33| /DTR
   RCLK |9           32| /RTS
    RxD |10  16450   31| /OUT2
    TxD |11   8250   30| INTR
    CE0 |12          29|
    CE1 |13          28| A0
   /CE2 |14          27| A1
/CLKOUT |15          26| A2
     X1 |16          25| /ADS
     X0 |17          24| CSOUT
    /WR |18          23| DDIS
     WR |19          22| RD
    GND |20          21| /RD
        +--------------+

8251

Universal asynchronous receiver/transmitter.
      +-----+--+-----+
   D2 |1    +--+   28| D1
   D3 |2           27| D0
  RxD |3           26| VCC
  GND |4           25| /RxC
   D4 |5           24| /DTR
   D5 |6           23| /RTS
   D6 |7    8251   22| /DSR
   D7 |8           21| RST
 /TxC |9           20| CLK
  /WR |10          19| TxD
  /CE |11          18| TxEMPTY
 C//D |12          17| /CTS
  /RD |13          16| SYCDET BD
RxRDY |14          15| TXRDY
      +--------------+

8253, 8254

Programmable interval timer/counter.
     +-----+--+-----+
  D7 |1    +--+   24| VCC
  D6 |2           23| /WR
  D5 |3           22| /RD
  D4 |4           21| /CE
  D3 |5           20| A1
  D2 |6    8253   19| A0
  D1 |7    8254   18| CLK2
  D0 |8           17| OUT2
CLK0 |9           16| G2
OUT0 |10          15| CLK1
  G0 |11          14| G1
 GND |12          13| OUT1
     +--------------+

8255

Parallel Peripheral Interface.
    +-----+--+-----+
PA3 |1    +--+   40| PA4
PA2 |2           39| PA5
PA1 |3           38| PA6
PA0 |4           37| PA7
/RD |5           36| /WR
/CE |6           35| RST
GND |7           34| D0
 A1 |8           33| D1
 A0 |9           32| D2
PC7 |10   8255   31| D3
PC6 |11          30| D4
PC5 |12          29| D5
PC4 |13          28| D6
PC0 |14          27| D7
PC1 |15          26| VCC
PC2 |16          25| PB7
PC3 |17          24| PB6
PB0 |18          23| PB5
PB1 |19          22| PB4
PB2 |20          21| PB3
    +--------------+

Z8530, Z8531

Zilog Serial Communications Controller.
Z8531 has no synchronous capabilities.
          +-----+--+-----+
       D1 |1    +--+   40| D0
       D3 |2           39| D2
       D5 |3           38| D4
       D7 |4           37| D6
     /INT |5           36| /RD
      IEO |6           35| /WR
      IEI |7           34| A0 A/B
   /INTAK |8           33| /CE
      VCC |9           32| A1 D/C
  /W_REQA |10   Z8530  31| GND
   /SYNCA |11    SCC   30| /W_REQB
   /RTxCA |12          29| /SYNCB
     RxDA |13          28| /RTxCB
   /TRxCA |14          27| RxDB
     TxDA |15          26| /TRxCB
/DTR_REQA |16          25| TxDB
    /RTSA |17          24| /DTR_REQB
    /CTSA |18          23| /RTSB
    /DCDA |19          22| /CTSB
      CLK |20          21| /DCDB
          +--------------+

8574, 8574A

I2C parallel I/O expander.
I2C address is 0100xxx for the 8574 and 0111xxx for the 8574A, where xxx can be specified by the A0-2 inputs.
    +---+--+---+
 A0 |1  +--+ 16| VCC
 A1 |2       15| SDA
 A2 |3       14| SCL
 P0 |4       13| /INT
 P1 |5  8574 12| P7
 P2 |6       11| P6
 P3 |7       10| P5
GND |8        9| P4
    +----------+

8584

I2C bus controller.
Bus controller ties to either Z80-style bus or to 68000-style bus, and determines the mode from the first few cycles.
           +---+--+---+
       CLK |1  +--+ 20| VCC
SDAo   SDA |2       19| /RST /STB
SCLo   SCL |3       18| /WR  R//W
SDAi /IACK |4       17| /CS
SCLi  /INT |5       16| /RD  /DTACK
        A0 |6  8584 15| D7
        D0 |7       14| D6
        D1 |8       13| D5
        D2 |9       12| D4
       GND |10      11| D3
           +----------+

16450

Asynchronous serial interface controller.
        +-----+--+-----+
     D0 |1    +--+   40| VCC
     D1 |2           39| /RI
     D2 |3           38| /DCD
     D3 |4           37| /DSR
     D4 |5           36| /CTS
     D5 |6           35| MR
     D6 |7           34| /OUT1
     D7 |8           33| /DTR
   RCLK |9           32| /RTS
    RxD |10  16450   31| /OUT2
    TxD |11   8250   30| INTR
    CE0 |12          29|
    CE1 |13          28| A0
   /CE2 |14          27| A1
/CLKOUT |15          26| A2
     X1 |16          25| /ADS
     X0 |17          24| CSOUT
    /WR |18          23| DDIS
     WR |19          22| RD
    GND |20          21| /RD
        +--------------+

16550

Asynchronous serial interface controller with DMA support and 16-byte FIFOs.
        +-----+--+-----+
     D0 |1    +--+   40| VCC
     D1 |2           39| /RI
     D2 |3           38| /DCD
     D3 |4           37| /DSR
     D4 |5           36| /CTS
     D5 |6           35| MR
     D6 |7           34| /OUT1
     D7 |8           33| /DTR
   RCLK |9           32| /RTS
    RxD |10  16550   31| /OUT2
    TxD |11          30| INTR
    CE0 |12          29| /RXRDY
    CE1 |13          28| A0
   /CE2 |14          27| A1
/CLKOUT |15          26| A2
     X1 |16          25| /ADS
     X0 |17          24| /TXRDY
    /WR |18          23| DDIS
     WR |19          22| RD
    GND |20          21| /RD
        +--------------+

16552

Dual asynchronous serial interface controller with DMA support and 16-byte FIFOs, and an 8-bit parallel printer port.
PLCC68
+---------------+---------------+---------------+---------------+
| 10 2TxD       | 27 GND        | 44 1BD        | 61 /2RXRDY    |
| 11 /2DTR      | 28 /1CTS      | 45 1INT       | 62 2RxD       |
| 12 /2RTS      | 29 /1DCD      | 46 PD7        | 63 /ERR       |
| 13 /2CTS      | 30 /1RI       | 47 PD6        | 64 VCC        |
| 14 D0         | 31 /1DSR      | 48 PD5        | 65 SLCT       |
| 15 D1         | 32 /1CE       | 49 PD4        | 66 BUSY       |
| 16 D2         | 33 A2         | 50 PD3        | 67 PE         |
| 17 D3         | 34 A1         | 51 PD2        | 68 /ACK       |
| 18 D4         | 35 A0         | 52 PD1        |  1 PEMD       |
| 19 D5         | 36 /WR        | 53 PD0        |  2 2TR        |
| 20 D6         | 37 /RD        | 54 GND        |  3 /2CE       |
| 21 D7         | 38 /PCE       | 55 /STB       |  4 CLK        |
| 22 /1TXRDY    | 39 /RST       | 56 /AFD       |  5 /2DSR      |
| 23 VCC        | 40 VCC        | 57 /INIT      |  6 /2RI       |
| 24 /1RTS      | 41 1RxD       | 58 /SLIN      |  7 GND        |
| 25 /1DTR      | 42 /2TXRDY    | 59 PINT       |  8 /2DCD      |
| 26 1TxD       | 43 /ENIRQ     | 60 2INT       |  9 /1RXRDY    |
+---------------+---------------+---------------+---------------+

16554

Quad asynchronous serial interface controller with DMA support and 16-byte FIFOs.
PLCC68
+---------------+---------------+---------------+---------------+
| 10 /1DSR      | 27 /2DCD      | 44 /3DSR      | 61 /4DCD      |
| 11 /1CTS      | 28 /2RI       | 45 /3CTS      | 62 /4RI       |
| 12 /1DTR      | 29 2RxD       | 46 /3DTR      | 63 4RxD       |
| 13 VCC        | 30 VCC        | 47 VCC        | 64 VCC        |
| 14 /1RTS      | 31            | 48 /3RTS      | 65 /INTN      |
| 15 1INT       | 32 A2         | 49 3INT       | 66 D0         |
| 16 /1CE       | 33 A1         | 50 /3CE       | 67 D1         |
| 17 1TxD       | 34 A0         | 51 3TxD       | 68 D2         |
| 18 /WR        | 35 X1         | 52 /RD        |  1 D3         |
| 19 2TxD       | 36 X2         | 53 4TxD       |  2 D4         |
| 20 /2CE       | 37 RST        | 54 /4CE       |  3 D5         |
| 21 2INT       | 38 /RXRDY     | 55 4INT       |  4 D6         |
| 22 /2RTS      | 39 /TXRDY     | 56 /4RTS      |  5 D7         |
| 23 GND        | 40 GND        | 57 GND        |  6 GND        |
| 24 /2DTR      | 41 3RxD       | 58 /4DTR      |  7 1RxD       |
| 25 /2CTS      | 42 /3RI       | 59 /4CTS      |  8 /1RI       |
| 26 /2DSR      | 43 /3DCD      | 60 /4DSR      |  9 /1DCD      |
+---------------+---------------+---------------+---------------+

68153

680x0 family bus interrupter.
       +-----+--+-----+
   VCC |1    +--+   40| A3
  R//W |2           39| A2
   /CE |3           38| A1
/DTACK |4           37| D7
 /IACK |5           36| D6
/IACKi |6           35| D5
/IACKo |7           34| D4
 /IRQ1 |8           33| D3
   GND |9           32| D2
   GND |10          31| GND
   VCC |11  68153   30| VCC
 /IRQ2 |12          29| D1
 /IRQ3 |13          28| D0
 /IRQ4 |14          27| /INTAE
 /IRQ5 |15          26| INTAL1
 /IRQ6 |16          25| INTAL0
 /IRQ7 |17          24| /INT3
   CLK |18          23| /INT2
 /INT0 |19          22| /INT1
   GND |20          21| VCC
       +--------------+

68230 (PLCC)

680x0 family Parallel Interface and Timer (PI/T)
PLCC52
+---------------+---------------+---------------+---------------+
|  8            | 21            | 34 PC0        | 47 R//W       |
|  9 PA4        | 22 PB2        | 35 PC1        | 48 D0         |
| 10 PA5        | 23 PB3        | 36 PC2 TIN    | 49 D1         |
| 11 PA6        | 24 PB4        | 37 PC3 TOUT   | 50 D2         |
| 12 PA7        | 25 PB5        | 38 PC4 /DMARQ | 51 D3         |
| 13 VCC        | 26 PB6        | 39 PC5 /PIRQ  | 52 D4         |
| 14 H1         | 27 PB7        | 40 PC6 /PIACK |  1 D5         |
| 15 H2         | 28 A4         | 41 PC7 /TIACK |  2 D6         |
| 16 H3         | 29 A3         | 42 GND        |  3 D7         |
| 17 H4         | 30 A2         | 43 /RST       |  4 PA0        |
| 18 PB0        | 31 A1         | 44 CLK        |  5 PA1        |
| 19 PB1        | 32 A0         | 45 /CE        |  6 PA2        |
| 20            | 33            | 46 /DTACK     |  7 PA3        |
+---------------+---------------+---------------+---------------+

68230 (DIP)

680x0 family Parallel Interface and Timer (PI/T)
    +-----+--+-----+
 D5 |1    +--+   48| D4
 D6 |2           47| D3
 D7 |3           46| D2
PA0 |4           45| D1
PA1 |5           44| D0
PA2 |6           43| R//W
PA3 |7           42| /DTACK
PA4 |8           41| /CE
PA5 |9           40| CLK
PA6 |10          39| /RST
PA7 |11          38| GND
VCC |12          37| PC7 /TIACK
 H1 |13  68230   36| PC6 /PIACK
 H2 |14          35| PC5 /PIRQ
 H3 |15          34| PC4 /DMAREQ
 H4 |16          33| PC3 TOUT
PB0 |17          32| PC2 TIN
PB1 |18          31| PC1
PB2 |19          30| PC0
PB3 |20          29| RS0
PB4 |21          28| RS1
PB5 |22          27| RS2
PB6 |23          26| RS3
PB7 |24          25| RS4
    +--------------+

68452

680x0 family bus arbiter.
       +-----+--+-----+
   VCC |1    +--+   28| GND
   VCC |2           27| /BCLR
  /GT4 |3           26| /GT0
 /REQ3 |4           25| /REQ4
  /GT5 |5           24| /GT1
 /REQ2 |6           23| /REQ5
 /REQ1 |7           22| /REQ6
   GND |8   68452   21| /REQ7
 /REQ0 |9           20| /BG
  /LEI |10          19| /BR
/BGACK |11          18| /GT2
  /GT7 |12          17| /GT3
  /GT6 |13          16| VCC
   GND |14          15| VCC
       +--------------+

68901 (DIP)

680x0 multi-function peripheral.
     +-----+--+-----+
R//W |1    +--+   48| /CE
 RS0 |2           47| /DS
 RS1 |3           46| /DTACK
 RS2 |4           45| /IACK
 RS3 |5           44| D7
 RS4 |6           43| D6
  TC |7           42| D5
  SO |8           41| D4
  SI |9           40| D3
  RC |10          39| D2
 VCC |11          38| D1
     |12          37| D0
 TAO |13  68901   36| GND
 TBO |14          35| CLK
 TCO |15          34| /IEI
 TDO |16          33| /IEO
  X1 |17          32| /IRQ
  X0 |18          31| /RR
 TAI |19          30| /TR
 TBI |20          29| INT7
/RST |21          28| INT6
INT0 |22          27| INT5
INT1 |23          26| INT4
INT2 |24          25| INT3
     +--------------+

68901 (PLCC)

680x0 multi-function peripheral.
PLCC52
+---------------+---------------+---------------+---------------+
|  8 TC         | 21            | 34 /TR        | 47 D6         |
|  9 SO         | 22 TAI        | 35 /RR        | 48 D7         |
| 10 SI         | 23 TBI        | 36 /IRQ       | 49 /IACK      |
| 11 RC         | 24 /RST       | 37 /IEO       | 50 /DTACK     |
| 12 VCC        | 25 INT0       | 38 /IEI       | 51 /DS        |
| 13            | 26 INT1       | 39 CLK        | 52 /CE        |
| 14            | 27 INT2       | 40 GND        |  1            |
| 15 TAO        | 28 INT3       | 41 D0         |  2 R//W       |
| 16 TBO        | 29 INT4       | 42 D1         |  3 RS0        |
| 17 TCO        | 30 INT5       | 43 D2         |  4 RS1        |
| 18 TDO        | 31 INT6       | 44 D3         |  5 RS2        |
| 19 X1         | 32 INT7       | 45 D4         |  6 RS3        |
| 20 X0         | 33            | 46 D5         |  7 RS4        |
+---------------+---------------+---------------+---------------+

146818

Real-time clock with 50 bytes RAM.
    +-----+--+-----+
    |1    +--+   24| VCC
 X1 |2           23| SQW
 X2 |3           22|
AD0 |4           21| /RCLR
AD1 |5           20| VBAT
AD2 |6   146818  19| /INT
AD3 |7           18| /RST
AD4 |8           17| DS
AD5 |9           16| GND
AD6 |10          15| R//W
AD7 |11          14| AS
GND |12          13| /CE
    +--------------+









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