描述 Description

The CXP80712B/80716B/80720B/80724B is a CMOS 8-bit microcomputer which consists of A/D converter, serial interface, timer/counter, time base timer, high precision timing pattern generation circuit, PWM output, VISS/VASS circuit, 32kHz timer/counter, remote control receiving circuit, VSYNC separator and the measurement circuit which measures signals of capstan FG and drum FG/PG 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 CXP80712B/80716B/80720B/80724B provides sleep/stop function which enables to lower power consumption.

特性 Features

? A wide instruction set (213 instructions) which 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 12K bytes (CXP80712B) 16K bytes (CXP80716B) 20K bytes (CXP80720B) 24K bytes (CXP80724B)

? Incorporated RAM capacity 800 bytes

? Peripheral functions

— A/D converter 8 bits, 12 channels, successive approximation system (Conversion time of 20.0μs/16MHz)

— Serial Interface Incorporated 8-bit and 8-stage FIFO, 1 channel (1 to 8 bytes auto transfer) 8-bit serial I/O, 1 channel

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

— High precision timing pattern generator PPG for 19 pins, 32-stage programmable RTG for 5 pins, 2 channels

— PWM/DA gate output 12 bits, 2 channels (Repetitive frequency of 62.5kHz/16MHz)

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

— VSYNC separator

— FRC capture unit Incorporated 26-bit and 8-stage FIFO

— PWM output 14 bits, 1 channel

— VISS/VASS circuit Pulse duty auto detection circuit

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

? Interruption 21 factors, 15 vectors, multi-interruption possible

? Standby mode SLEEP/STOP

? Package 100-pin plastic QFP/LQFP

? Piggyback/evaluation chip CXP87700 100-pin ceramic PQFP