描述 Description

The CXP85632/85640 is a CMOS 8-bit microcomputer which consists of A/D converter, serial interface, timer/counter, time-base timer, closed caption decoder, data slicer, on-screen display function, I2C bus interface, PWM output, remote control receiver, HSYNC counter and watchdog timer as well as basic configuration like 8-bit CPU, ROM, RAM and I/O port.

Also this IC provides power-on reset function and sleep function which enables to lower power consumption.

特性 Features

? A wide instruction set (213 instructions) to cover various types of data.

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

? Minimum instruction cycle 333ns at 12MHz operation

? Incorporated ROM 32K bytes (CXP85632) 40K bytes (CXP85640)

? Incorporated RAM 1888 bytes (excluding the closed caption decoder and on-screen display VRAM)

? Peripheral functions

— A/D converter 8 bits, 6 channels, successive approximation method (Conversion time of 26.7μs/12MHz)

— Serial interface 8-bit clock, sync type, 1 channel

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

— Closed caption decoder

Incorporated decode slicer,

conforming to FCC, 8 × 13 dots, 192 character types, 15 character colors,

4 lines of 34 characters, italic, underline, vertical scroll,

15 frame background colors/half blanking

— On-screen display (OSD) function

12 × 16 dots, 128 character types, 15 character colors, 4 lines of 24 characters,

8 frame background colors/half blanking, edging per line (half dot), vertical scroll

jitter elimination circuit

— I2C bus interface

— PWM output 8 bits, 4 channels

— Remote control receiver circuit

Incorporated 6-stage FIFO 8-bit pulse measurement counter

— HSYNC counter 2 channels

— Watchdog timer

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

? Standby mode SLEEP

? Package 64-pin plastic SDIP/QFP

? Piggyback/evaluation chip CXP85690 64-pin ceramic PSDIP (accommodates custom font)