NEC PD75P402 Manuale Utente

Item

Description

Number of basic
instructions

Instruction
execution time

Built-in
memory

General register

Accumulators

I/O line

Pull-up resistor

Clock output

Timer/Counter

Serial interface

Vectored
interrupt

Test input

Standby

Instruction set

Package

37

• 0.95 

µ

s, 1.91 

µ

s, 15.3 

µ

s (at 4.19 MHz operation)

selectable between 3 levels

1920 

×

 8 bits (

µ

PD75402A: Mask ROM, 

µ

PD75P402: One-time PROM)

64 

×

 4 bits (RAM)

4 bits 

×

 4, or 8 bits 

×

 2 (memory mapping)

3 accumulators to suit manipulation data length
• Bit accumulator (CY), 4-bit accumulator (A), 8-bit accumulator (XA)

Total 22 lines
• CMOS input port

: 6 lines

• CMOS input/output port (LED direct drivable 8 lines)

: 12 lines

• N-ch open-drain input/ output port (LED direct drivable)

: 4 lines

• Pull-up resistor built-in control possible by software

: 16 lines

• Pull-up resistor built-in control possible by mask option (

µ

PD75402A only)

: 4 lines

• 1.05 MHz, 524 kHz, 65.5 kHz (at 4.19 MHz operation)
• Applicable to remote control output

8-bit basic interval timer
• Reference time generation (1.95 ms, 31.3 ms : at 4.19 MHz operation)
• Watchdog timer applicable

• 8 bits
• 2 transfer modes (clock synchronous 3-wire system mode/SBI mode)

External: 1 line, internal : 2 lines

External: 1 line
(For details, see CHAPTER 6 “INTERRUPT FUNCTIONS”.)

STOP mode/HALT mode

• Bit manipulation instruction (set, clear, test, Boolean operation)
• 1-byte relative branch instruction
• 4-bit operation instruction (add, Boolean operation, compare)
• 4, 8-bit data transfer instruction

• 28-pin plastic DIP (600 mil)
• 28-pin plastic shrink DIP (400 mil)
• 44-pin plastic QFP (

  ■  

  ■  

10 mm)

Program
memory

Data
memory