EM73983

EM73983 4-BIT MICRO-CONTROLLER FOR LCD PRODUCT inary m i l e r P GENERAL DESCRIPTION EM73983 is an advanced single chip CMOS 4-bit micro-controller. It contains 16K-byte ROM, 500-nibble RAM, 4-bit ALU, 13-level subroutine nesting, 22-stage time base, two 12-bit timer/counters for the kernel function. EM73983 also equipped with 6 interrupt sources, 3 I/O ports (including 1 input port and 2 bidirection ports), LCD display (40x8), built-in sound generator and speech synthesizer. It's low power consumption and high speedfeature are further strengten with DUAL, SLOW, IDLE and STOP operation mode for optimized power saving. FEATURES Operation voltage Clock source : 2.2V to 4.8V. : Dual clock system. Low-frequency oscillator is Crystal or RC oscillator (32K Hz, connect a external resistor) by mask option and high-frequency oscillator is a built-in internal oscillator (4.6 MHz). Instruction set : 107 powerful instructions. Instruction cycle time : 1.7µs for 4.6M Hz (high speed clock) . 244µs for 32768 Hz (low speed clock). ROM capacity : 16K x 8 bits. RAM capacity : 500 x 4 bits. Input port : 1 port (P0.0-P0.3), IDLE/STOP releasing function is available by mask option. (each input pin has a pull-up and pull-down resistor available by mask option). Bidrection port : 2 ports (P4, P8). IDLE/STOP release function for P8(0..3) is available by mask option. Built-in watch-dog-timer counter : It is available by mask option. 12-bit timer/counter : Two 12-bit timer/counters are programma...