EM73983 Datasheet | ELAN Microelectronics Corp

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 programmable for timer, event counter and pulse width measurement mode. Built-in time base counter : 22 stages. Subroutine nesting : Up to 13 levels. Interrupt : External interrupt - . 2 input interrupt sources. Internal interrupt - . 2 timer overflow interrupts, 1 time base interrupt. 1 speech interrupt. LCD driver : 40x8 dots,1 /8 duty, 1/5 bias with voltage multiplier. Sound effect : Tone generator and random generator. Speech synthesizer : 160K speech data ROM (use as 160K nibbles data ROM). Power saving function : SLOW, IDLE, STOP operation modes. Package...