描述 Description

The CXP82432A/82440A is a CMOS 8-bit single chip microcomputer integrating on a single chip an A/D converter, serial interface, timer/counter, time base timer, capture timer counter, fluorescent display tube controller/driver, remote control reception circuit, CTL duty detection circuit, 14-bit PWM output and high-speed output circuit besides the basic configurations of 8-bit CPU, ROM, RAM, and I/O port.

The CXP82432A/82440A also provides sleep/stop function that enables lower power consumption.

特性 Features

? 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 400ns at 10MHz operation (122μs at 32kHz operation)

? Incorporated ROM capacity 32K bytes (CXP82432A) 40K bytes (CXP82440A)

? Incorporated RAM capacity 1120 bytes (including fluorescent display area)

? Peripheral functions

— A/D converter 8-bit, 8-channel, successive approximation method (Conversion time of 32μs/10MHz)

— Serial interface 8-bit, 8-stage FIFO incorporated (Auto transfer for 1 to 8 bytes), 1 channel 8-bit clock synchronized type, 1 channel

— Timers 8-bit timer, 8-bit timer/counter, 19-bit time base timer 16-bit capture timer/counter, 32kHz timer/counter

— Fluorescent display tube controller/driver Maximum of 384 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 16 x 8 key matrix compatible

— Remote control reception circuit Incorporated noise elimination circuit 8-bit pulse measuring counter, 6-stage FIFO

— PWM output circuit 14 bits, 1 channel

— CTL duty detection circuit

— High-speed output circuit Precision of 800ns at 10MHz, 4 outputs

? Interruption 19 factors, 15 vectors, multi-interruption possible

? Standby mode SLEEP/STOP

? Package 100-pin plastic QFP

? Piggyback/evaluation chip CXP82400A 100-pin ceramic QFP