MC68HC908GR4CDW 8-битный микроконтроллер FLASH 4 КБ

MC68HC908GR4CDW

SOP28

The MC68HC908GR8 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.

• High-performance M68HC08 architecture optimized for Ccompilers

• Fully upward-compatible object code with M6805, M146805, and

M68HC05 Families

• 8-MHz internal bus frequency

• FLASH program memory security(1)

• On-chip programming firmware for use with host personal

computer which does not require high voltage for entry

• In-system programming

• System protection features:

– Optional computer operating properly (COP) reset

– Low-voltage detection with optional reset and selectable trip

points for 3.0 V and 5.0 V operation

– Illegal opcode detection with reset

– Illegal address detection with reset

• Low-power design; fully static with stop and wait modes

• Standard low-power modes of operation:

– Wait mode

– Stop mode

• Master reset pin and power-on reset (POR)

• 4096 bytes of on-chip FLASH memory with in-circuit programming capabilities of

FLASH program memory

• 384 bytes of on-chip random-access memory (RAM)

• Serial peripheral interface module (SPI)

• Serial communications interface module (SCI)

• One 16-bit, 2-channel timer (TIM1) and one 16-bit, 1-channel

timer (TIM2) interface modules with selectable input capture,

output compare, and PWM capability on each channel

• 6-channel, 8-bit successive approximation analog-to-digital

converter (ADC)

• BREAK module (BRK) to allow single breakpoint setting during incircuit

debugging

• Internal pullups on IRQ and RST to reduce customer system cost

• Clock generator module with on-chip 32-kHz crystal compatible

PLL (phase-lock loop)

• Up to 21 general-purpose input/output (I/O) pins, including:

– 19 shared-function I/O pins

– Up to two dedicated I/O pins, depending on package choice

• Selectable pullups on inputs only on ports A, C, and D. Selection

is on an individual port bit basis. During output mode, pullups are

disengaged.

• High current 10-mA sink/10-mA source capability on all port pins

• Higher current 15-mA sink/source capability on PTC0–PTC1

• Timebase module with clock prescaler circuitry for eight user

selectable periodic real-time interrupts with optional active clock

source during stop mode for periodic wakeup from stop using an

external 32-kHz crystal

• Oscillator stop mode enable bit (OSCSTOPENB) in the CONFIG

register to allow user selection of having the oscillator enabled or

disabled during stop mode 4-bit keyboard wakeup port

• 32-pin quad flat pack (QFP) or 28-pin plastic dual-in-line package

(DIP) or 28-pin small outline integrated circuit (SOIC)

• Specific features of the MC68HC908GR8 in 28-pin DIP and 28-pin

SOIC are:

– Port B is only 4 bits: PTB0–PTB3; 4-channel ADC module

– No Port C bits

Dokumentacja pod adresem: http://www.wolumen53.com/pdf/MC68HC908GR4CDW.pdf