PRODUCT OVERVIEW KS57C2308/P2308/C2316/P2316
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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