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