EM73A88A - ELAN Microelectronics Corp

EM73A88A 4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

EM73A88A 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. EM73A88A also equipped with 6 interrupt sources, 3 I/O ports (including 1 input port and 2 bidirection ports), LCD display (64x16), built-in s.

Features

• Operation voltage
• Clock source
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• : 2.2V to 4.8V. : Dual clock system. Low-frequency oscillator is 32 KHz Crystal or RC oscillator 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 optio.