描述 Description

The CXP82940/82948/82952/82960 is a CMOS 8-bit single chip microcomputer integrating on a single

chip an A/D converter, serial interface, timer/counter, time base timer, fluorescent display panel

controller/driver, I2C bus interface, remote control transmission circuit, remote control reception circuit, and 32kHz timer/counter besides the basic configurations of 8-bit CPU, ROM, RAM, and I/O port.

Features1

? Wide-range instruction system (213 instructions) to cover various types of data

— 16-bit arithmetic/multiplication and division/boolean bit operation instructions

? Minimum instruction cycle 250ns at 16MHz operation

(122μs at 32kHz operation)

? Incorporated ROM capacity 40K bytes (CXP82940)

48K bytes (CXP82948)

52K bytes (CXP82952)

60K bytes (CXP82960)

? Incorporated RAM capacity 2048 bytes (including fluorescent display area)

? Periphera; functions

— A/D converter 8-bit, 8-channel, successive approximation method

(Conversion time of 20μs/16MHz)

— Serial interface Buffer RAM incorporated (Auto transfer for 1 to 32 bytes), 1 channel

8-bit, 8-stage FIFO incorporated

(Auto transfer for 1 to 8 bytes), 1 channel

— Timers 8-bit timer, 8-bit timer/counter, 19-bit time base timer 32kHz timer/counter

— Fluorescent display panel controller/driver Maximum of 196 segments display possible

1 to 16-digit dynamic display

Dimmer function

High voltage drive output (40V)

Incorporated pull-down resistor (Mask option)

Hardware key scan function

Maximum of 12 ×8 key matrix supportable

— I2C bus interface

— Remote control transmission circuit Auto transmission for 1 to 32 bytes, restart function, carrier output function

— Remote control reception circuit 8-bit pulse measurement counter, 6-stage FIFO

? Interruption 16 factors, 15 vectors, multi-interruption possible

? Standby mode SLEEP/STOP

? Package 80-pin plastic QFP

? Piggyback/evaluation chip CXP82900 80-pin ceramic QFP