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General Description

Introduction

The MC68H(R)C908JL3E is a member of the low-cost, high-performance M68HC08 Family of 8-bit microcontroller units (MCUs). The M68HC08 Family is based on the customer-specified integrated circuit (CSIC) design strategy. 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 of the MC68H(R)C908JL3E include the following:

? EMC enhanced version of MC68H(R)C908JL3/JK3/JK1

? High-performance M68HC08 architecture

? Fully upward-compatible object code with M6805, M146805, and M68HC05 Families

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

? Maximum internal bus frequency:

– 8-MHz at 5V operating voltage

– 4-MHz at 3V operating voltage

? Oscillator options:

– Crystal oscillator for MC68HC908JL3E/JK3E/JK1E

– RC oscillator for MC68HRC908JL3E/JK3E/JK1E

? User program Flash memory with security(1) feature

– 4,096 bytes for MC68H(R)C908JL3E/JK3E

– 1,536 bytes for MC68H(R)C908JK1E

? 128 bytes of on-chip RAM

? 2-channel, 16-bit timer interface module (TIM)

? 12-channel, 8-bit analog-to-digital converter (ADC)

? 23 general purpose I/O ports for MC68H(R)C908JL3E:

– 7 keyboard interrupt with internal pull-up (6 keyboard interrupt for MC68HC908JL3E)

– 10 LED drivers (sink)

– 2 × 25mA open-drain I/O with pull-up

? 15 general purpose I/O ports for MC68H(R)C908JK3E/JK1E:

– 1 keyboard interrupt with internal pull-up (MC68HRC908JK3E/JK1E only)

– 4 LED drivers (sink)

– 2 × 25mA open-drain I/O with pull-up

– 10-channel ADC

? System protection features:

– Optional computer operating properly (COP) reset

– Optional low-voltage detection with reset and selectable trip points for 3V and 5V operation

– Illegal opcode detection with reset

– Illegal address detection with reset

? Master reset pin with internal pull-up and power-on reset

? IRQ with schmitt-trigger input and programmable pull-up

? 28-pin PDIP, 28-pin SOIC, and 48-pin LQFP packages for MC68H(R)C908JL3E

? 20-pin PDIP and 20-pin SOIC packages for MC68H(R)C908JK3E/JK1E