EM73982 Datasheet, PDF (1/41 Pages) ELAN Microelectronics Corp – 4-BIT MICROCONTROLLER

EM73982
4-BIT MICROCONTROLLER
GENERAL DESCRIPTION
EM73982 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. EM73982 also contains 5 interrupt sources, 3 I/O ports (including 1 input port and 2 bidirection ports),
LCD display (40x8), built-in sound generator and speech synthesizer.
Except low-power consumption and high speed, EM73982 also have a sleep mode for power saving function.
EM73982 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 5.5V.
• Clock source
: Single clock system for both RC and Crystal are available by mask option.
External clock and internal clock are available by mask option.
• Oscillation frequency : 480K, 1M, 2M and 4M Hz are available by mask option.
• Instruction set
: 109 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
: 2 ports (P4, P8). P4.0 and SOUND is available by mask option. 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 . . . . . 1 input interrupt sources.
Internal . . . . . . 2 Timer overflow interrupts.
1 Time base interrupt.
1 Speech ending interrupt.
• LCD driver
: 40 X 8 dots, 1/8 duty, LCD bias is 1/4 and modified 1/4 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.
• Speech synthesizer : Speech data ROM . . 24K bytes.
Sample rate . . . . . . . 4K, 5K, 8K, 10K, 12K, 15K, 20K programmable.
• Power saving function : Sleep mode and Hold mode.
• Package type :
EM73982H Chip form
68 pins.
* This specification are subject to be changed without notice.
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