Описание
The MC68HC908QC16, MC68HC908QC8, and MC68HC908QC4 are members 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 CPU core
- Fully upward-compatible object code with M68HC05 Family
- 5.0-V and 3.3-V operating voltages (VDD)
- 8-MHz internal bus operation at 5 V, 4-MHz at 3.3 V
- Trimmable internal oscillator
- Software selectable 1 MHz, 2 MHz, 3.2 MHz, or 6.4 MHz internal bus operation
- 8-bit trim capability
- 25% untrimmed
- Trimmable to approximately 0.4%(1)
- Software selectable crystal oscillator range, 32
- 100 kHz, 1
- 8 MHz, and 8
- 32 MHz
- Software configurable input clock from either internal or external source
- Auto wakeup from STOP capability using dedicated internal 32-kHz RC or bus clock source
- FLASH security(2)
- On-chip in-application programmable FLASH memory (with internal program/erase voltage generation)
- Enhanced serial communications interface (ESCI) module
- Serial peripheral interface (SPI) module
- 4-channel, 16-bit timer interface (TIM1) module
- 2-channel, 16-bit timer interface (TIM2) module
- 10-channel, 10-bit analog-to-digital converter (ADC) with internal bandgap reference channel (ADC10)
- Up to 24 bidirectional input/output (I/O) lines and two input only:
- Six shared with keyboard interrupt function
- Ten shared with ADC
- Four shared with TIM1
- Two shared with TIM2
- Two shared with ESCI
- Four shared with SPI
- One input only shared with external interrupt (IRQ)
- High current sink/source capability on all port pins
- Selectable pullups on all ports, selectable on an individual bit basis
- Three-state ability on all port pins
- 6-bit keyboard interrupt with wakeup feature (KBI)
- Programmable for rising/falling edge or high/low level detection
- Low-voltage inhibit (LVI) module features:
- Software selectable trip point in CONFIG register
- System protection features:
- Computer operating properly (COP) watchdog
- Low-voltage detection with reset
- Illegal opcode detection with reset
- Illegal address detection with reset
- External asynchronous interrupt pin with internal pullup (IRQ) shared with general-purpose input pin
- Master asynchronous reset pin with internal pullup (RST) shared with general-purpose input/output (I/O) pin
- Memory mapped I/O registers
- Power saving stop and wait modes
- MC68HC908QC16, MC68HC908QC8, and MC68HC908QC4 are available in these packages:
- 28-pin small outline integrated circuit package (SOIC)
- 28-pin thin shrink small outline package (TSSOP)
- 20-pin SOIC
- 20-pin TSSOP
- 16-pin SOIC
- 16-pin TSSOP
