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:

– 28-pin plastic dual in-line package (PDIP)

– 28-pin small outline integrated circuit (SOIC)

– 28-pin ceramic dual in-line package (CERDIP)

Features

Features of the MC68HC705P9 include:

• Four peripheral modules

– 16-bit input capture/output compare timer

– Synchronous serial I/O port (SIOP)

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

– 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:

– Crystal

– Ceramic resonator

– External clock

• 2104 bytes of EPROM/OTPROM

– 48 bytes of page zero EPROM/OTPROM

– Eight locations for user vectors