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EM73A89B fiches techniques PDF

ELAN Microelectronics Corp - 4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

Numéro de référence EM73A89B
Description 4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
Fabricant ELAN Microelectronics Corp 
Logo ELAN Microelectronics Corp 





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EM73A89B fiche technique
GENERAL DESCRIPTION
EM73A89B
4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
Preliminary
EM73A89B is an advanced single chip CMOS 4-bit micro-controller. It contains 16K-byte ROM, 1012-nibble
RAM, 4-bit ALU, 13-level subroutine nesting, 22-stage time base, two 12-bit timer/counters for the kernel
function, and one high speed conter. EM73A89B also equipped with 6 interrupt sources, 3~7 I/O ports (including
1 input port and 2~7 bidirection ports), LCD display (64x16 or 64x32), built-in watch-dog-timer and speech
synthesizer.
It's low power consumption and high speed feature are further strengten with DUAL, SLOW, IDLE and STOP
operation mode for optimized power saving.
FEATURES
• Operation voltage
: 2.2V to 3.6V.
• Clock source
: Dual clock system. Low-frequency oscillator is 32KHz. Crystal oscillator or RC
oscillator by mask option and high-frequency oscillator is a built-in internal
oscillator.
• Instruction set
: 107 powerful instructions.
• Instruction cycle time : 0.85µs for 9.2M or 1.7µs for 4.6M Hz selected by mask option(high speed clock).
122µs for 32768 Hz (low speed clock, frequency double).
• ROM capacity
: 16K x 8 bits.
• RAM capacity
: 1012 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).
• Bidirection port
: 2~7 ports (P1, P2, P4, P5, P6, P7, P8). IDLE/STOP release function for P8(0..
3) is available by mask option. P1, P2, P5, P6, P7 are shared with LCD pins.
• 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/HTC interrupt.
• High speed counter
: The high speed counter includes one 8-bit high speed counter and a resistor to
frequency oscillator. It has resistor to frequrncy oscillation mode, melody mode
and auto load timer mode.
• LCD driver
: 64x32 or 64x16 dots, 1/32 or 1/16 duty, 1/5 bias by mask option.
• Speech synthesizer
: 992K speech data ROM (use as 992K nibbles data ROM).
• PWM or current D/A : Output selection by mask option.
• Power saving function : SLOW, IDLE, STOP operation modes.
• Package type
: Chip form 126 pins.
* This specification are subject to be changed without notice.
8.16.2001 1

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