Features: • 8-Bit RS08 Central Processor Unit (CPU) – Up to 20 MHz CPU at 1.8 V to 5.5 V across temperature range of –40°C to 85°C – Subset of HC08 instruction set with added BGND instruction • On-Chip Memory – 8 KB flash read/program/erase over full operating voltage and temperature; KA4 has 4 KB flash – 254 byte random-access memory (RAM); KA4 has 126 byte RAM – Security circuitry to prevent unauthorized access to RAM and flash contents • Power-Saving Modes – Wait and stop – Wakeup from power-saving modes using real-time interrupt (RTI), KBI, or ACMP • Clock Source Options – Oscillator (XOSC) — Loop-Control Pierce oscillator; crystal or ceramic resonator range of 31.25 kHz to 39.0625 kHz or 1 MHz to 5 MHz – 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 2% deviation over temperature and voltage; supports bus frequencies up to 10 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 – 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 • Peripherals – ADC — 12-channel, 10-bit resolution; 2.5 μs conversion time; automatic compare function; operation in stop; fully functional from 2.7 V to 5.5 V (8-channels available on 16-pin package) – TPM — One 2-channel; selectable input capture, output compare, or buffered edge- or center-aligned PWM on each channel – IIC — Inter-Integrated circuit bus module capable of operation up to 100 kbps with maximum bus loading; capable of higher baudrates with reduced loading – MTIM1 and MTIM2 — Two 8-bit modulo timers – KBI — Keyboard interrupts with rising or falling edge detect; eight KBI ports in 16-pin and 20-pin packages – ACMP — Analog comparator: full rail-to-rail supply operation; option to compare to fixed internal bandgap reference voltage; can operate in stop mode • Input/Output – 14/18 GPIOs including one output only pin and one input only pin – Hysteresis and configurable pullup device on all input pins; configurable slew rate and drive strength on all output pins • Package Options – 16-pin SOIC, PDIP or TSSOP – 20-pin SOIC or PDIP
