Samsung KS57C2308 manual Memory, Pins, LCD Controller/Driver, Bit Basic Timer, Bit Timer/Counter

PRODUCT OVERVIEW KS57C2308/P2308/C2316/P2316

FEATURES

Memory

–512 × 4-bit RAM

–8 K × 8-bit ROM (KS57C2308/P2308)

–16 K × 8-bit ROM (KS57C2316/P2316)

I/O Pins

–Input only: 8 pins

–I/O: 24 pins

–Output: 8 pins sharing with segment driver outputs

LCD Controller/Driver

–Maximum 16-digit LCD direct drive capability

–32 segment, 4 common pins

–Display modes: Static, 1/2 duty (1/2 bias), 1/3 duty (1/2 or 1/3 bias), 1/4 duty (1/3 bias)

8-Bit Basic Timer

–Programmable interval timer

–Watchdog timer

8-Bit Timer/Counter 0

–Programmable 8-bit timer

–External event counter

–Arbitrary clock frequency output

–Serial I/O interface clock generator

Watch Timer

–Real-time and interval time measurement

–Four frequency outputs to BUZ pin

–Clock source generation for LCD

8-Bit Serial I/O Interface

–8-bit transmit/receive mode

–8-bit receive only mode

–LSB-first or MSB-first transmission selectable

–Internal or external clock source

Bit Sequential Carrier

–Support 16-bit serial data transfer in arbitrary format

Interrupts

–Three internal vectored interrupts

–Three external vectored interrupts

–Two quasi-interrupts

Memory-Mapped I/O Structure

–Data memory bank 15

Two Power-Down Modes

–Idle mode (only CPU clock stops)

–Stop mode (main or sub system oscillation stops)

Oscillation Sources

–Crystal, ceramic, or RC for main system clock

–Crystal or external oscillator for subsystem clock

–Main system clock frequency: 4.19 MHz (typical)

–Subsystem clock frequency: 32.768 kHz

–CPU clock divider circuit (by 4, 8, or 64)

Instruction Execution Times

–0.95, 1.91, 15.3 µs at 4.19 MHz (main)

–122 µs at 32.768 kHz (subsystem)

Operating Temperature

–– 40 °C to 85 °C

Operating Voltage Range

–1.8 V to 5.5 V

Package Type

–80-pin QFP

1-2