EM73A89B Ver la hoja de datos (PDF) - ELAN Microelectronics

Número de pieza

componentes Descripción

Fabricante

EM73A89B

4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

ELAN Microelectronics 

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

Share Link: