MC68HC812A4CPV8E中文资料16-bit device composed of standard on-chip peripheral modules connected by an intermodule bus数据手册恩XP规格书

描述 Description

General Description
Introduction
The MC68HC812A4 microcontroller unit (MCU) is a 16-bit device composed of standard on-chip peripheral modules connected by an intermodule bus. Modules include:
 
• 16-bit central processor unit (CPU12)
 
• Lite integration module (LIM)
 
• Two asynchronous serial communications interfaces (SCI0 and SCI1)
 
• Serial peripheral interface (SPI)
 
• Timer and pulse accumulator module
 
• 8-bit analog-to-digital converter (ATD)
 
• 1-Kbyte random-access memory (RAM)
 
• 4-Kbyte electrically erasable, programmable read-only memory (EEPROM)
 
• Memory expansion logic with chip selects, key wakeup ports, and a phase-locked loop (PLL)

特性 Features

Features of the MC68HC812A4 include:
 
• Low-power, high-speed M68HC12 CPU
 
• Power-saving stop and wait modes
 
• Memory:
     – 1024-byte RAM
     – 4096-byte EEPROM
     – On-chip memory mapping allows expansion to more than 5-Mbyte address space
 
• Single-wire background debug mode
 
• Non-multiplexed address and data buses
 
• Seven programmable chip-selects with clock stretching (expanded modes)
 
• 8-channel, enhanced 16-bit timer with programmable prescaler:
     – All channels configurable as input capture or output compare
     – Flexible choice of clock source
 
• 16-bit pulse accumulator
 
• Real-time interrupt circuit
 
• Computer operating properly (COP) watchdog
 
• Clock monitor
 
• Phase-locked loop (PLL)