Description

The CXP87740A/87748A is a CMOS 8-bit microcomputer which consists of A/D converter, serial interface, timer/counter, time base timer, vector interruption, high precision timing pattern generation circuit, PWM generator, PWM for tuner, VISS/VASS circuit, 32kHz timer/event counter, remote control receiving circuit, VCR vertical sync separation circuit and the measuring circuit which measure 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.

Features

• A wide instruction set (213 instructions) which cover various types of data

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

• Minimum instruction cycle During operation 333ns/12MHz (Supply voltage 3.0 to 5.5V)

During operation 250ns/16MHz (Supply voltage 4.5 to 5.5V)

During operation 122µs/32kHz

• Incorporated ROM capacity 40K bytes (CXP87740A) 48K bytes (CXP87748A)

• Incorporated RAM capacity 1344 bytes

• Peripheral functions

— A/D converter 8-bit, 12-channel, successive approximation system (Conversion time 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 19 pins 32-stage programmable RTG 5-pins 2-channel

— PWM/DA gate output 12-bit, 2-channel (Repetitive frequency 62kHz/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-bit, 1-channel

— VISS/VASS circuit Pulse duty auto detection circuit

— Remote control receiving circuit 8-bit pulse measuring 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 QFP/LQFP