描述 Description

The CXP921064A is a CMOS 16-bit microcomputer integrating on a single chip an A/D converter, serial interface, I2C bus interface, timer, real-time pulse generator, clock prescaler, remote control receive circuit, and as well as basic configurations like a 16-bit CPU, ROM, RAM, and I/O port.

This LSI also provides the sleep/stop functions that enable lower power consumption.

特性 Features

? An efficient instruction set as a controller

— Direct addressing, numerous abbreviated forms, multiplication and division instructions

? Instruction sets for C language and RTOS

— Highly quadratic instruction system, general purpose register of eigth 16-bit × 16-bank configuration

? Minimum instruction cycle 100ns at 20MHz operation (2.7 to 3.3V)

61μs at 32kMHz operation (2.2 to 3.3V)

? Incorporated ROM capacity 256K bytes

? Incorporated RAM capacity 10K bytes

? Peripheral functions

— A/D converter 8-bit 12 analog input, 2 channels successive approximation system, automatic scanning function, (Conversion time: 3.4μs at 20MHz)

— Serial interface 128 -byte buffer RAM, 3 channels 8-stage FIFO, 1 channel (supports special mode master/slave)

— I2C bus interface 64-byte buffer RAM , 2 channels (supports master/slave and automatic transfer mode)

— Timers 8-bit timer/counter, 2 channels (with timing output) 16-bit timer, 3 channels

— Real-time pulse generator 5-bit output, 1 channel (2-stage FIFO)

— Clock prescaler

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

? Interruption 30 factors, 30 vectors, multi-interruption and priority selection possible

? Standby mode Sleep/stop

? Package 100-pin plastic QFP/LQFP

104-pin plastic LFLGA

? Piggy/evaluation chip CXP921000A

? FLASH EEPROM incorporated version CXP921F064A