MC68HC908GP20中文资料Microcontroller数据手册恩XP规格书

描述 Description

Overview The MC68HC908GP20 is a member of the low-cost, high-performance M68HC08 Family of 8-bit microcontroller units (MCUs). All MCUs in the family use the enhanced M68HC08 central processor unit (CPU08) and are available with a variety of modules, memory sizes and types, and package types.

特性 Features

•High-performance M68HC08 architecture optimized for
•Fully upward-compatible object code with M6805, M146805, and
•8-MHz internal bus frequency
•FLASH program memory security 1
•On-chip programming firmware for use with host personal
•In-system programming
•System protection features:
•Optional computer operating properly (COP) reset
•Illegal opcode detection with reset
•Low-power design; fully static with stop and wait modes
•Standard low-power modes of operation:
•Wait mode
•Master reset pin and power-on reset (POR)
•20 Kbytes of on-chip FLASH memory with in-circuit programming
•512 bytes of on-chip random-access memory (RAM)
•Serial peripheral interface module (SPI)
•Serial communications interface module (SCI)
•Two 16-bit, 2-channel timer interface modules (TIM1 and TIM2)
•8-channel, 8-bit successive approximation analog-to-digital
•BREAK module (BRK) to allow single breakpoint setting during
•Internal pullups on IRQ and RST to reduce customer system
•Clock generator module with on-chip 32-kHz crystal compatible
•Up to 33 general-purpose input/output (I/O) pins,
•26 shared-function I/O pins
•Five or seven dedicated I/O pins, depending on package
•Selectable pullups on inputs only on ports A, C, and D.
•High current 10-mA sink/10-mA source capability on all port
•Higher current 15-mA sink/source capability on
•Timebase module with clock prescaler circuitry for eight user
•Oscillator stop mode enable bit (OSCSTOPENB) in the CONFIG
•8-bit keyboard wakeup port
•5-mA maximum current injection on all port pins to maintain
•40-pin plastic dual-in-line package (DIP) or 44-pin quad flat
•Specific features of the MC68HC908GP20 in 40-pin DIP are:
•Port C is only 5 bits: PTC0–PTC4
•Enhanced HC05 programming model
•Extensive loop control functions
•16 addressing modes (eight more than the HC05)
•16-bit index register and stack pointer
•Memory-to-memory data transfers
•Fast 8 X 8 multiply instruction
•Fast 16/8 divide instruction
•Binary-coded decimal (BCD) instructions
•Optimization for controller applications
•Efficient C language support