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Introduction

The MC68HC908QL4 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.

Features

Features include:

? High-performance M68HC08 CPU core

? Fully upward-compatible object code with M68HC05 Family

? 5-V and 3.3-V operating voltages (VDD)

? 8-MHz internal bus operation at 5 V, 4-MHz at 3.3 V

? Software configurable input clock from either internal or external source

? Trimmable internal oscillator

– Selectable 1 MHz, 2 MHz, or 3.2MHz or 6.4 MHz internal bus operation

– 8-bit trim capability

– Trimmable to approximately 0.4(1)

– ± 25 untrimmed

? Software selectable crystal oscillator range, 32–100 kHz, 1–8 MHz, and 8–32 MHz

? Auto wakeup from STOP capability using dedicated internal 32-kHz RC or bus clock source

? On-chip in-application programmable FLASH memory

– Internal program/erase voltage generation

– Monitor ROM containing user callable program/erase routines

– FLASH security(2)

? On-chip random-access memory (RAM)

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