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General Description

? 128 bytes of user RAM

? Bootloader ROM

? Memory-mapped I/O registers

? Fully static operation with no minimum clock speed

? Power-saving stop, wait, and data-retention modes

? Available packages:

¨C 28-pin plastic dual in-line package (PDIP)

¨C 28-pin small outline integrated circuit (SOIC)

¨C 28-pin ceramic dual in-line package (CERDIP)

Features

Features of the MC68HC705P9 include:

? Four peripheral modules

¨C 16-bit input capture/output compare timer

¨C Synchronous serial I/O port (SIOP)

¨C 4-channel, 8-bit analog-to-digital converter (ADC)

¨C Computer operating properly (COP) watchdog

? 20 bidirectional input/output (I/O) port pins and one input-only port pin

? On-chip oscillator with connections for:

¨C Crystal

¨C Ceramic resonator

¨C External clock

? 2104 bytes of EPROM/OTPROM

¨C 48 bytes of page zero EPROM/OTPROM

¨C Eight locations for user vectors