GENERAL DESCRIPTION

EM73962A is an advanced single chip CMOS 4-bit micro-controller. It contains 16K-byte ROM, 372-nibble RAM, 4-bit ALU, 13-level subroutine nesting, 22-stage time base, two 12-bit timer/counters for the kernal function. EM73962A also contains 5 interrupt sources, 3 I/O ports (including 1 input port and 2 bidirection ports), LCD display (40x8), built-in sound generator.

Except low-power consumption and high speed, EM73962A also have a sleep mode for power saving function. EM73962A is suitable for appliaction in many fields, for example : family appliance, consumer products, hand held games and the toy controller ... etc.

FEATURES

• Operation voltage : 2.4V to 5.0V.

• Clock source : Single clock system using RC. oscillator.

External clock and internal clock is available by mask option.

• Oscillation frequency : 480K, 1M, 2M and 4M Hz is available by mask option.

• Instruction set : 107 powerful instructions.

• Instruction cycle time : Up to 2us for 4 MHz.

• ROM capacity : 16384 X 8 bits.

• RAM capacity : 372 X 4 bits.

• Input port : 1 port (P0.0-P0.3) and sleep/hold releasing function are available by mask option. (each input pin is pull-up and pull-down resistor available by mask option).

• Bidirection port : 1 port (P8). P8(0..3) and sleep/hold releasing function are available by mask option.

• 12-bit timer/counter : Two 12-bit timer/counters are programmable for timer, event counter and pulse width measurement.

• Built-in time base counter : 22 stages.

• Subroutine nesting : Up to 13 levels.

• Interrupt : External . . . . . 2 input interrupt sources.

Internal . . . . . . 2 Timer overflow interrupts.

1 Time base interrupt.

• LCD driver : 40 X 8 dots, 1/8 duty, LCD bias is 1/4 and 1/5 available by mask option, LCD bias resistor is 20K X 5 and 10K X 5 available by mask option.

• Sound effect : Tone generator, random generator and volume control.

• Power saving function: Sleep mode and Hold mode.

• Package type : EM73962AH Chip form 62 pins.