EM32100 Ver la hoja de datos (PDF) - ELAN Microelectronics

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componentes Descripción

Fabricante

EM32100

8/10 DIGIT LCD DRIVER

ELAN Microelectronics 

EM32100

8/10 DIGIT LCD DRIVER

FUNCTION BLOCK DIAGRAM

COM1~3

SEG1~24

1/3 Duty 1/2 Bias LCD Driver

Serial

SDI

Data

Samplin

&

Serial Data

Display Buffer

RTC/STW

Counter

Decoding

Sampling

Signal

Generator

XIN

XOUT

VDD

VSS

OSC.

Power

Supply

Circuit

VP VEE VN

Timing

&

Control

Circuit

ENRTC*

24/12

H* KS*

MS2

MS1

F32HZ

TESTI*

PIN DESCRIPTIONS

Symbol

MS1

MS2

SDI

HKS

VDD

XIN,XOUT

V

SS

24/12

ENRTC

VEE,VP,VN

SEG1~SEG24

COM1~COM3

TEST2

TESTI

F32H

Function

RTC (Real Time Clock ) manual setting pin 1 (internal pull up resistor typ. 150kΩ,debounce

time=15.6ms)

RTC ( Real Time Clock ) manual setting pin 2 ; internal pull up resistor : idle ( On-Hook ) =

5MΩ , normal ( Off- Hook ) = 150kΩ ; at idle and normal state , debounce time=15.6ms ,

at test mode state , no debounce time )

Serial data input pin ( internal pull up resistor = 5 MΩ)

Hook switch status input pin. ( This pin "High",On-Hook ; "Low",Off-Hook )

Power supply pin

Crystal input and output pins(crystal=32768Hz)

Power supply pin

RTC display 24 or 12 hours format select pin.(This pin "high",24 hours form;"low",12

hours form,input pin)

RTC enable or disable detect pin. ( This pin detect "high", RTC disable; "low" , RTC

enable , input pin )

Voltage doubler circuit for LCD driver ( DC-DC frequency conversion=1024Hz )

LCD panel driver segment output pins

LCD panel driver common output pins ( Frame Frequency= 34.13 Hz).

No connection , reserve for testing

Enter test mode detect pin

Signal 32 Hz output for testing ,NMOS open drain structure

* This specification are subject to be changed without notice.

2.10.1999 2

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