ICM7231 Ver la hoja de datos (PDF) - Intersil

Número de pieza

componentes Descripción

Fabricante

ICM7231

Numeric/Alphanumeric Triplexed LCD Display Drivers

Intersil 

Timing Diagrams

CS

INPUT

DATA

ADDRESS

INPUT

ICM7231, ICM7232

tCS

tICS

ADDRESS

AND DATA

INPUTS VALID

tDH

tDS

ADDRESS

AND DATA

INPUTS VALID

DO NOT CARE

FIGURE 1. ICM7231 INPUT TIMING DIAGRAM

DATA

tCI

CLOCK

INPUT

(PER BIT

OF DATA)

DATA

INPUT

tDS

DATA

ACCEPTED

OUTPUT

tWLL

WRITE

INPUT

tCI

1

2

3

8

AN1

DATA

VALID

AN2

DATA

VALID

tDH

BD0

DATA

VALID

A1

DATA

VALID

tODL

tWP

RESETS SHIFT REGISTER

AND INPUT CONTROL

LOGIC WHEN DATA

ACCEPTED HIGH

DO NOT CARE

ELEVENTH CLOCK

WITH NO WRITE PULSE

RESETS SR + LOGIC

9

10

tODL

A2

DATA

VALID

A3

DATA

VALID

tODH

tWP

tCWS

DECODES AND STORES

DATA, RESETS SHIFT

REGISTER AND LOGIC

WHEN DATA ACCEPTED

IS LOW

FIGURE 2. ICM7232 ONE DIGIT INPUT TIMING DIAGRAM, WRITING BOTH ANNUNCIATORS

9-25

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