MC9S08PA4
MC9S08PA4 Data Sheet
Supports: MC9S08PA4(A)
Key features
• 8-Bit S08 central processor unit (CPU)
– Up to 20 MHz bus at 2.7 V to 5.5 V across operating
temperature range
– Supporting up to 40 interrupt/reset sources
– Supporting up to four-level nested interrupt
– On-chip memory
– Up to 4 KB flash read/program/erase over full
operating voltage and temperature
– Up to 128 byte EEPROM; 2-byte erase sector;
program and erase while executing flash
– Up to 512 byte random-access memory (RAM)
– Flash and RAM access protection
• Power-saving modes
– One low-power stop mode; reduced power wait
mode
– Peripheral clock enable register can disable clocks to
unused modules, reducing currents; allows clocks to
remain enabled to specific peripherals in stop3 mode
• Clocks
– Oscillator (XOSC) - loop-controlled Pierce
oscillator; crystal or ceramic resonator range of
31.25 kHz to 39.0625 kHz or 4 MHz to 20 MHz
– Internal clock source (ICS) - containing a frequency-
locked-loop (FLL) controlled by internal or external
reference; precision trimming of internal reference
allowing 1% deviation across temperature range of 0
°C to 70 °C and 2% deviation across whole
operating temperature range; up to 20 MHz
• System protection
– Watchdog with independent clock source
– Low-voltage detection with reset or interrupt;
selectable trip points
– Illegal opcode detection with reset
– Illegal address detection with reset
• Development support
– Single-wire background debug interface
– Breakpoint capability to allow three breakpoints
setting during in-circuit debugging
– On-chip in-circuit emulator (ICE) debug module
containing two comparators and nine trigger modes
• Peripherals
– ACMP - one analog comparator with both positive
and negative inputs; separately selectable interrupt
on rising and falling comparator output; filtering
– ADC - 8-channel, 12-bit resolution; 2.5 µs
conversion time; data buffers with optional
watermark; automatic compare function; internal
bandgap reference channel; operation in stop mode;
optional hardware trigger
– FTM - Three 2-channel flex timer modulators
modules; 16-bit counter; each channel can be
configured for input capture, output compare, edge-
or center-aligned PWM mode
– RTC - 16-bit real timer counter (RTC)
– SCI - one serial communication interface (SCI/
UART) modules optional 13-bit break; full duplex
non-return to zero (NRZ); LIN extension support
• Input/Output
– Up to 18 GPIOs including one output-only pin
– One 8-bit keyboard interrupt module (KBI)
– Two, ultra-high current sink pins supporting 20 mA
source/sink current
• Package options
– 20-pin SOIC
– 20-pin TSSOP
– 16-pin TSSOP
– 8-pin DFN
– 8-pin SOIC
NXP Semiconductors
Document Number MC9S08PA4
Data Sheet: Technical Data
Rev. 8, 08/2018
NXP reserves the right to change the production detail specifications as may be
required to permit improvements in the design of its products.
