EM73880 - ELAN Microelectronics Corp

EM73880 4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

EM73880 is an advanced single chip CMOS 4-bit micro-controller. It contains 8K-byte ROM, 244-nibble RAM, 4-bit ALU, 13-level subroutine nesting, 22-stage time base, two 12-bit timer/counters for the kernel function. EM73880 also contains 6 interrupt sources, 1 input port, 2 bidirection ports, LCD display (32x4), and one high speed timer/counter,sound generat.

Features

• Operation voltage
• Clock source
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• : 2.4V to 3.6V. : Dual clock system. Low-frequency oscillator (32.768 KHz) could be Crystal or RC oscillator high-frequency oscillator is a built-in for 4.6 MHz. Instruction set : 107 powerful instructions. Instruction cycle time : 1.7us for 4.6 MHz (high speed clock). 244 µs for 32768 Hz (low speed clock). ROM capacity : 8192 X 8 bits. RAM capacity : 244 X 4 bits. Input port : 1 port (P0). P0(0..3) and IDLE releasing function are available by mask option. Bidirection port : 2 ports (P4, P8). P4.1 is shared with HTC external input. P8(.