Features
• 8-Bit S08 Central Processor Unit (CPU)
– Up to 40 MHz CPU at 2.7 V to 5.5 V across temperature range of –40 °C to 125 °C
– HC08 instruction set with added BGND instruction
– Support for up to 32 interrupt/reset sources
• On-Chip Memory
– 4 KB flash read/program/erase over full operating voltage and temperature
– 128-byte random-access memory (RAM)
– Security circuitry to prevent unauthorized access to RAM and flash contents
• Power-Saving Modes
– Two low power stop modes; reduced power wait mode
– Allows clocks to remain enabled to specific peripherals in stop3 mode
• Clock Source Options
– Internal Clock Source (ICS) — Internal clock source module containing a frequency-locked-loop (FLL) controlled by internal or external reference; precision trimming of internal reference allows 0.2% resolution and 1% deviation over 0–70 °C and voltage, 2% deviation over –40–85 °C and voltage, or 3% deviation over –40–125 °C and voltage; supporting bus frequencies up to 20 MHz
• System Protection
– Watchdog computer operating properly (COP) reset with option to run from dedicated 1 kHz internal clock source or bus clock
– Low-voltage detection with reset or interrupt; selectable trip points
– Illegal opcode detection with reset
– Illegal address detection with reset
– Flash block protection
• Development Support
– Single-wire background debug interface
– Breakpoint capability to allow single breakpoint setting during in-circuit debugging (plus two more breakpoints)
– On-chip in-circuit emulator (ICE) debug module containing two comparators and nine trigger modes