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GENERAL DESCRIPTION

The SN8P1800 is an series of 8-bit micro-controller including SN8P1808. This series is utilized with CMOS technology fabrication and featured with low power consumption and high performance by its unique electronic structure.

FEATURES

? SN8P1808

? Memory configuration

OTP ROM size: 4K * 16 bits

RAM size: 256 * 8 bits (bank 0 and bank 1)

LCD RAM size: 24 * 3 bits

? I/O pin configuration

Input only: P0, P3

Output only: P2 shared with LCD segment

Bi-directional: P1, P4, P5, P6

Wakeup: P0, P1

Pull-up resisters: P0, P1, P3, P4, P5, P6

External interrupt: P0

Port 3 shared with LCD segment

All LCD pins shared with the I/O pins

? 59 powerful instructions

Four clocks per instruction cycle

All of instructions are one word length.

Most of instructions are one cycle only.

Maximum instruction cycle is two.

All ROM area JMP instruction.

All ROM area lookup table function (MOVC)

Support hardware multiplier (MUL).

? Seven interrupt sources

Four internal interrupts: T0, TC0, TC1, SIO

Three external interrupts: INT0, INT1, INT2

? A real time clock timer

? An 8-bit basic timer with green mode wakeup function

? Two 8-bit timer counters with PWM or buzzer

? On chip watchdog timer

? Eight levels stack buffer

? An 8-channel ADC with 8-bit/12-bit resolution

? SIO function

? LCD driver: 1/3 duty, 1/2 bias. 3 common * 24 segment

? Dual clock system offers four operating modes

External high clock: RC type up to 10 MHz

External high clock: Crystal type up to 16 MHz

External Low clock: Crystal 32768Hz

Normal mode: Both high and low clock active.

Slow mode: Low clock only.

Sleep mode: Both high and low clock stop.

Green mode: Periodical wakeup by timer.

? Package

Chip form: LQFP 64 pins