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S3C821 Datasheet(PDF) 2 Page - Samsung semiconductor |
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S3C821 Datasheet(HTML) 2 Page - Samsung semiconductor |
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2 / 33 page  PRODUCT OVERVIEW S3C821A/P821A 1-2 FEATURES CPU • SAM8 CPU core Memory • Data memory: 1040-byte of internal register file (Excluding LCD RAM) • Program memory: 48-Kbyte internal program memory (ROM) External Interface • 64-Kbyte external data memory area Instruction Execution Time • 750 ns at 8 MHz (minimum, Main oscillator) • 183 µs at 32,768 Hz (minimum, Sub oscillator) Interrupts • 7 interrupt levels and 19 interrupt sources • 19 vectors • Fast interrupt processing feature (for one selected interrupt level) I/O Ports • Five 8-bit I/O ports (P0–P4) and one 7-bit I/O port (P5) for a total of 47 bit-programmable pins 8-Bit Basic Timer • One programmable 8-bit basic timer (BT) for oscillation stabilization control or watchdog timer (software reset) function Watch Timer • Time internal generation: 3.91 ms, 0.5 s at 32,768 Hz • Four frequency outputs to BUZ pin • Clock source generation for LCD Timers and Timer/Counters • One 8-bit timer/counter (Timer 0) with three operating modes: Interval, Capture, and PWM • One 16-bit timer/counter (Timer 1) with two 8-bit timer/counter modes LCD Controller/Driver • Up to 32 segment pins • 3, 4, and 8 common selectable • Choice of duty cycle • All dots can be switched on/off • Internal resistor circuit for LCD bias Serial Port • One synchronous SIO A/D Converter • 8-bit conversion resolution × 4 channel • 34 µs conversion time (4 MHz CPU clock, fxx/4) Oscillation Sources • Crystal, ceramic, or RC for main system clock • Crystal or external oscillator for subsystem clock • Main system clock frequency: 8 MHz • Subsystem clock frequency: 32.768 kHz Power-down Modes • Main idle mode (only CPU clock stops) • Sub idle mode • Stop mode (main/sub system oscillation stops) Operating Temperature Range • – 40 °C to + 85 °C Operating Voltage Range • 2.0 V to 5.5 V at 32 kHz (sub clock)-6 MHz (main clock) • 2.2 V to 5.5 V at 8 MHz Package Type • 80-pin TQFP, 80-pin QFP |
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