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General Description

Introduction

The MC68HC05RC16 is a low-cost addition to the M68HC05 Family of microcontrollers (MCUs) and is suitable for remote control applications. This device contains the HC05 central processing unit (CPU) core, including the 14-stage core timer with real-time interrupt (RTI) and computer operating properly (COP) watchdog systems. On-chip peripherals include a carrier modulator transmitter. The 16-kbyte memory map has 15,936 bytes of user ROM and 352 bytes of RAM. There are 20 input/output (I/O) lines (eight having keyscan pullups/interrupts) and a low-power reset pin. This device is available in 28-pin small outline integrated circuit (SOIC), 28-pin dual in-line (DIP), and 44-pin plastic leaded chip carrier (PLCC) packages. Four additional I/O lines are available for bond out on the higher pin count package.

Features

Features for the MC68HC05RC16 include:

? Low Cost

? HC05 Core

? 28-Pin Plastic Dual In-Line (PDIP), Small Outline Integrated Circuit (SOIC), or Plastic Leaded Chip Carrier (PLCC) Packages

? On-Chip Oscillator with Crystal/Ceramic Resonator

? 4-MHz Maximum Oscillator Frequency at 5 V and 2.2 V Supply

? Fully Static Operation

? 15,936 Bytes of User ROM

? 64 Bytes of Burn-In ROM

? 352 Bytes of On-Chip RAM

? 14-Stage Core Timer with Real-Time Interrupt (RTI) and Computer Operating Properly (COP) Watchdog Circuits

? Carrier Modulator Transmitter Supporting Baseband, Pulse Length Modulator (PLM), and Frequency Shift Keying (FSK) Protocols

? Low-Power Reset Pin

? 20 Bidirectional I/O Lines (Four Additional I/O Lines Available for Bond Out in 44-Lead PLCC Package)

? Mask Programmable Pullups and Interrupts on Eight Port Pins (PB0–PB7)

? High-Current Infrared (IR) Drive Pin

? High-Current Port Pin (PC0)

? Power-Saving Stop and Wait Modes

? Mask Selectable Options:

– COP Watchdog Timer

– STOP Instruction Disable

– Edge-Sensitive or Edge- and Level-Sensitive Interrupt Trigger

– Port B Pullups for Keyscan

? Illegal Address Reset

? ROM Security Feature