EM78569 데이터 시트보기 (PDF) - ELAN Microelectronics

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EM78569

8-BIT MICRO-CONTROLLER

ELAN Microelectronics 

EM78569

8-bit Micro-controller

I. General Description

The EM78569 is an 8-bit RISC type microprocessor with low power, high speed CMOS technology. This

integrated single chip has an on_chip watchdog timer (WDT), program ROM, data RAM, LCD driver, programmable

real time clock/counter, internal interrupt, power down mode, built-in three-wire SPI, dual PWM(Pulse Width

Modulation), 10-bit A/D converter, 10-bit DA converter and tri-state I/O.

II. Feature

CPU

· Operating voltage : 2.2V~5.5V at main CLK less then 3.58MHz.

Main CLK(Hz)

Under 3.58M

Operating Voltage(min)

2.2

7.16M

2.5

10.74M

3

14.4M

3.6

17.9M

4V

· 16k x 13 on chip Program ROM.

· 1k x 8 on chip data RAM

· Up to 51 bi-directional tri-state I/O ports(22 pin shared with LCD)

· 12 level stack for subroutine nesting

· 8-bit real time clock/counter (TCC)

· Two 8-bit counters : COUNTER1 and COUNTER2

· On-chip watchdog timer (WDT)

· 99.9％ single instruction cycle commands

•Three modes (Main clock can be programmed from 447.829k to 17.9MHz generated by internal PLL)

Mode

CPU status Main clock 32.768kHz clock status

Sleep mode

Green mode

Normal mode

Turn off

Turn on

Turn on

Turn off

Turn off

Turn on

Turn off

Turn on

Turn on

· 8 level Normal mode frequency : 447.8K , 895.7K , 1.79M , 3.58M , 7.16M , 10.75M , 14.3M , 17.9MHz.

· Input port interrupt function

· 10 interrupt source , 4 external , 6 internal

· Dual clocks operation (Internal PLL main clock , External 32.768KHz)

SPI

· Serial Peripheral Interface (SPI) : a kind of serial I/O interface

· Interrupt flag available for the read buffer full or transmitter buffer empty.

· Programmable baud rates of communication

· Three-wire synchronous communication. (shared with IO)

PWM

•Dual PWM (Pulse Width Modulation) with 10-bit resolution

•Programmable period (or baud rate)

•Programmable duty cycle

ADC

· Operating : 2.5V∼5.5V

· 6 channel 10-bit successive approximation A/D converter

· Internal (VDD) or external reference

DAC

· Operating : 2.5V∼5.5V under VDD reference, 2.8V ~ 5.5V under 2.5V reference

· 10-bit R-2R D/A converter

· Internal (VDD or 2.5V) reference

POR

· 2.0V Power-on voltage detector reset

Build-in LCD driver(4 X 32)

· Common driver pins : 4

· Segment driver pins : 32

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* This specification is subject to be changed without notice.

2

8/31/2004 (V4.0)

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