OVERVIEW
The S3C72P9 single-chip CMOS microcontroller has been designed for high performance using Samsungs newest 4-bit CPU core, SAM47 (Samsung Arrangeable Microcontrollers).
With an up-to-896-dot LCD direct drive capability, flexible 8-bit and 16-bit timer/counters, and serial I/O interface, the S3C72P9 offers an excellent design solution for a wide variety of applications which require LCD functions.

FEATURES
Memory
    • 1,056 ´ 4-bit RAM (excluding LCD display RAM)
    • 32,768 ´ 8-bit ROM
39 I/O Pins
    • I/O: 35 pins
    • Input only: 4 pins
LCD Controller/Driver
    • 56 segments and 16 common terminals
    • 8, 12 and 16 common selectable
    • Internal resistor circuit for LCD bias
    • All dot can be switched on/off
    • LCD contrast control by software
8-bit Basic Timer
    • 4 interval timer functions
    • Watch-dog timer
8-bit Timer/Counter
    • Programmable 8-bit timer
    • External event counter
    • Arbitrary clock frequency output
    • External clock signal divider
    • Serial I/O interface clock generator
16-Bit Timer/Counter
    • Programmable 16-bit timer
    • External event counter
    • Arbitrary clock frequency output
    • External clock signal divider
8-bit Serial I/O Interface
    • 8-bit transmit/receive mode
    • 8-bit receive mode
    • LSB-first or MSB-first transmission selectable
    • Internal or external clock source
Memory-Mapped I/O Structure
    • Data memory bank 15
Watch Timer
    • Time interval generation: 0.5 s, 3.9 ms at 32768 Hz
    • 4 frequency outputs to BUZ pin
    • Clock source generation for LCD
Interrupts
    • Four internal vectored interrupts
    • Four external vectored interrupts
    • Two quasi-interrupts
Bit Sequential Carrier
    • Supports 16-bit serial data transfer in arbitrary format
Power-Down Modes
    • Idle mode (only CPU clock stops)
    • Stop mode (main system oscillation stops)
    • Subsystem clock stop mode
Oscillation Sources
    • Crystal, ceramic, or RC for main system clock
    • Crystal oscillator for subsystem clock
    • Main system clock frequency: 0.4 – 6 MHz
    • Subsystem clock frequency: 32.768 kHz
    • CPU clock divider circuit (by 4, 8, or 64)
Instruction Execution Times
    • 0.67, 1.33, 10.7 µs at 6 MHz
    • 0.95, 1.91, 15.3 µs at 4.19 MHz
    • 122 µs at 32.768 kHz
Operating Temperature
    • – 40 °C to 85 °C
Operating Voltage Range
    • 1.8 V to 5.5 V
Package Type
    • 100-pin QFP