IBM nec pd78082 User Manual

On-chip ROM and RAM

The capacities of internal PROM and internal high-speed RAM can be changed by means of the memory

size switching register (IMS).

Instruction execution time changeable from high speed (0.4 

µ

s: In main system clock 5.0 MHz operation) to low

speed (12.8 

µ

s: In main system clock 5.0 MHz operation)

Instruction set suited to system control

• Bit manipulation possible in all address spaces

• Multiply and divide instructions

33 I/O ports

8-bit resolution A/D converter:  8 channels

Serial interface:  1 channel

• 3-wire serial I/O/UART mode:  1 channel

Timer:  3 channels

• 8-bit timer/event counter :  2 channels

• Watchdog timer :  1 channel

Vectored Interrupt Source :  13

Supply voltage:  V

DD

 = 1.8 to 5.5 V

Program Memory

(ROM)

Part Number

Type

µ

PD78081

µ

PD78082

µ

PD78P083

8 Kbytes

16 Kbytes

24 Kbytes (Note)

(Internal High-Speed RAM)

Data Memory

256 bytes

384 bytes

512 bytes (Note)