KS56C220

Samsung 4-Bit Singlechip Controller vom Typ S3C7 mit 2K ROM und 288 a 4 Bit RAM.

General Description

The S3C7 single-chip CMOS microcontroller has been designed for high performance using Samsung's newest 4-bit CPU core, SAM47 (Samsung Arrangeable Microcontrollers). With features such as, LCD direct drive capability, 8-bit timer/counter, and watch timer, the S3C7 offers an excellent design solution for a wide variety of applications that require LCD functions.

Features

Memory

• 288 x 4-bit RAM
• 2048 x 8-bit ROM

or

• 4096 x 8-bit ROM

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, 15.3µs at 4.19 MHz (main)
• 122µs at 32.768 kHz (subsystem)

Operating Voltage Range

• 2.0 V to 5.5 V at 4.19 MHz
• 1.8 V to 5.5 V at 3 MHz