EM73983 Datasheet, PDF (1/40 Pages) ELAN Microelectronics Corp – 4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

GENERAL DESCRIPTION
EM73983
4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
Preliminary
EM73983 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. EM73983 also equipped with 6 interrupt sources, 3 I/O ports (including 1 input port and 2 bidirection
ports), LCD display (40x8), built-in sound generator and speech synthesizer.
It's low power consumption and high speedfeature are further strengten with DUAL, SLOW, IDLE and STOP
operation mode for optimized power saving.
FEATURES
• Operation voltage
: 2.2V to 4.8V.
• Clock source
: Dual clock system. Low-frequency oscillator is Crystal or RC oscillator (32K Hz,
connect a external resistor) by mask option 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
option).
• Bidrection port
: 2 ports (P4, P8). IDLE/STOP release function for P8(0..3) is available by mask
option.
• Built-in watch-dog-timer counter : It is available by mask option.
• 12-bit timer/counter : Two 12-bit timer/counters are programmable for timer, event counter and pulse
width measurement mode.
• Built-in time base counter : 22 stages.
• Subroutine nesting
: Up to 13 levels.
• Interrupt
: External interrupt . . . . . . 2 input interrupt sources.
Internal interrupt . . . . . . 2 timer overflow interrupts, 1 time base interrupt.
1 speech interrupt.
• LCD driver
: 40x8 dots,1 /8 duty, 1/5 bias with voltage multiplier.
• Sound effect
: Tone generator and random generator.
• Speech synthesizer
: 160K speech data ROM (use as 160K nibbles data ROM).
• Power saving function : SLOW, IDLE, STOP operation modes.
• Package type
: Chip form 77 pins.
* This specification are subject to be changed without notice.
10.31.2000 1