描述 Description

The CXP87532/87540 is a CMOS 8-bit microcomputer which consists of arithmetic coprocessor, A/D converter, serial interface, timer/counter, time base timer, vector interruption, high precision timing pattern generation circuit, PWM generator and the measuring circuit which measures signals of capstan FG, drum FG/PG, reel FG and other servo systems, as well as basic configurations like 8-bit CPU, ROM, RAM and I/O port. They are integrated into a single chip.

Also this IC provides power on reset function, sleep/stop function which enables to lower power consumption.

特性 Features

? A wide instruction set (213 instructions) which covers various types of data

— 16-bit operation multiplycation and division/boolean bit operation instructions

? Minimum instruction cycle During operation 326ns/12.288MHz

? Incorporated ROM capacity 32K bytes (CXP87532)

40K bytes (CXP87540)

? Incorporated RAM capacity 1344 bytes

? Peripheral functions

— Arithmetic coprocessor Multiplying with code, sum of products with code, high speed

execution of many bits shift rotation operation

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

(Conversion time 13μs/12.288MHz)

Incorporated 3-stage FIFO for A/D conversion data

— Serial interface Incorporated buffer RAM for data

(1 to 128 bytes auto transfer) 2-channel

— Timer 8-bit timer, 8-bit timer/counter, 19-bit time base timer

— High precision timing pattern generator PPG (11 pins) 32-stage programmable

— PWM output 12-bit, 2-channel (Repeated frequency 48kHz)

8-bit, 3-channel (Repeated frequency 48kHz)

— Servo input control Capstan FG, Drum FG/PG, Reel FG input

— FRC capture unit Incorporated 28-bit and 8-stage FIFO

? Interruption 12 factors, 12 vectors, multi-interruption possible

? Standby mode Sleep/stop

? Package 100-pin plastic QFP/LQFP

? Piggyback/Evaluation CXP87500 100-pin ceramic QFP/LQFP