MC9S08QD4 Series Features
8-Bit HCS08 Central Processor Unit (CPU)
• 16 MHz HCS08 CPU (central processor unit)
• HC08 instruction set with added BGND instruction
• Background debugging system
• Breakpoint capability to allow single breakpoint setting during in-circuit debugging (plus two more breakpoints in on-chip debug module)
• Support for up to 32 interrupt/reset sources

Memory
• Flash read/program/erase over full operating voltage and temperature
• Flash size:
— MC9S08QD4/S9S08QD4: 4096 bytes
— MC9S08QD2/S9S08QD2: 2048 bytes
• RAM size
— MC9S08QD4/S9S08QD4: 256 bytes
— MC9S08QD2/S9S08QD2: 128 bytes

Power-Saving Modes
• Wait plus three stops

Clock Source Options
• ICS — Internal clock source module (ICS) containing a frequency-locked-loop (FLL) controlled by internal. Precision trimming of internal reference allows 0.2% resolution and 2% deviation over temperature and voltage.

System Protection
• Watchdog computer operating properly (COP) reset with option to run from dedicated 32 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 protect

Peripherals
• ADC — 4-channel, 10-bit analog-to-digital converter with automatic compare function, asynchronous clock source, temperature sensor and internal bandgap reference channel. ADC is hardware triggerable using the RTI counter.
• TIM1 — 2-channel timer/pulse-width modulator; each channel can be used for input capture, output compare, buffered edge-aligned PWM, or buffered center-aligned PWM
• TIM2 — 1-channel timer/pulse-width modulator; each channel can be used for input capture, output compare, buffered edge-aligned PWM, or buffered center-aligned PWM
• KBI — 4-pin keyboard interrupt module with software selectable polarity on edge or edge/level modes

Input/Output
• Four General-purpose input/output (I/O) pins, one input-only pin and one
output-only pin. Outputs 10 mA each, 60 mA maximum for package.
• Software selectable pullups on ports when used as input
• Software selectable slew rate control and drive strength on ports when used as output
• Internal pullup on RESET and IRQ pin to reduce customer system cost Development Support
• Single-wire background debug interface Package Options
• 8-pin SOIC package
• 8-pin PDIP (Only for MC9S08QD4 and MC9S08QD2)
• All package options are RoHS compliant