Àû²©¡¤(¼¯ÍÅ)ÓÐÏÞ¹«Ë¾¹ÙÍø

Introduction

The MC68HC05PV8, MC68HC805PV8 and MC68HC05PV8A microcontrollers are members of Motorola¡¯s 68HC05 family, designed for low-cost and single-chip systems in automotive applications. They combine an HC05 core with a shell of high-voltage peripherals. Throughout this book, the term MC68HC(8)05PV8/A is used to refer to all three MCUs.

The ROM (MC68HC05PV8) version of the MCU contains the HC05 CPU with integrated voltage regulator, RAM, ROM, EEPROM, core timer, COP watchdog, power-on reset, 16-bit programmable timer, PWM generator, standard parallel I/O, and special I/O for the automotive voltage range, including relay driver and contact monitors. Bootloader and test modes are supported. The package is 28-pin SOIC for the ROM and development version.

Features

Features of the MC68HC(8)05PV8/A include:

? HC05 Core

? 28 Pin SOIC Package

? Program EEPROM or ROM

¨C MC68HC805PV8: 7936 Bytes of Program EEPROM + 240 Bytes of Monitor ROM + 16 Bytes User Vectors

¨C MC68HC05PV8: 7936 Bytes of ROM + 240 Bytes of Monitor ROM + 16 Bytes User Vectors

? 192 Bytes of RAM Including Stack

? 128 Bytes of Data EEPROM

? On-Chip 5V (¡À5) Voltage Regulator including Power-On Reset, with 20mA supply for External Devices. VSUP Range is 6V to 16V.

Limited operation above and below that range. Breakdown Voltage above 40V.

? On-Chip Oscillator with External Resonator. Internal bus Frequency in Run and Wait Mode is fOSC¡Â2.

? Multipurpose Core Timer, Real Time Interrupt (RTI), (Window) COP Watchdog Timer

? 16-Bit Timer With Two Input Captures and Two Output Compares

? 1 Channel High-Speed PWM With Adjustable Frame Frequency

? 8 bit 6 Channel A/D Converter

? Port A: 8 Channel 5V I/O, with Pull-Ups, Shared with A/D Converter

? Port B: 5 Channel 5V I/O Shared with Timer and PWM

? Port C: 7 channel 40V I/O

¨C 5 Channel 10mA Contact Monitor, 1 for a Switch to Ground, 1 for a Switch to Battery and 3 of Universal Type. Contact Monitoring Requires a 1K? External Resistor. Contact Monitor Pins May Alternatively be Configured as High-Voltage I/O Relative to VSUP. Pins are Shared with Timer and PWM.

¨C 2 Channel 2? LS Relay Driver. The Pins are Shared with the PWM.

? Break-Down Voltage of High-Voltage Pins is greater than 40V.

? High-Voltage Interrupt/Reset (HVI/HVR) and Low-Voltage Reset (LVR).

? ¨C40¡ãC to 125¡ãC Junction Temperature.

? Operational Amplifier, Connected to PA4¨C6

? Keyboard Wake-Up Interrupt on Port A and PC4¨C0

? ISO9141 Compatible Transceiver on Port C4

? Ultra Low Power Mode on 68HC05PV8A