EM73361A

EM73361A 4-BIT MICRO-CONTROLLER FOR LCD PRODUCT GENERAL DESCRIPTION EM73361A is an advanced single chip CMOS 4-bit micro-controller. It contains 3K-byte ROM, 52-nibble RAM, 4-bit ALU, 13-level subroutine nesting, 22-stage time base, two 12-bit timer/counters for the kernel function. EM73361A also contains 3 interrupt sources, 1 input port, 4 bidirection I/O ports, built-in watch-dog-timer counter, tone generator and LCD driver (27x3 to 13x3). Except low-power consumption and high speed, EM73361A also have a sleep mode operation for power saving. FEATURES Operation voltage Clock source : 2.2V to 3.6V(clock frequency : 32K Hz). : Single clock system for crystal, connect a external resistor or external clock source available by mask option. Instruction set : 109 powerful instructions. Instruction cycle time : 122µs for 32K Hz. ROM capacity : 3072 X 8 bits. RAM capacity : 52 X 4 bits. Input port : 1 port (P0)(Pull-up and pull-down resistor with wakeup function available by mask option). Bidirection port : 4 ports (P4, P5, P6, P7) are available by mask option. (each I/O pin is push-pull and open-drain available by mask option) P4.0 is high current pin (P4.0 and TONE available by mask option). P4.2~P4.3, P5, P6 and P7 are shared with SEG26-SEG13 by mask option. 12-bit timer/counter : Two 12-bit timer/counters are programmable for timer mode. Low voltage reset (LVR) : Reset at 1.5V, and reset release at 1.8V. Tone generator : There is a built-in tone generator. Bui...