ICM7232 Intersil Corporation, ICM7232 Datasheet - Page 7

• Manufacturer Part Number: ICM7232
• Description: Numeric/alphanumeric Triplexed Lcd Display Drivers
• Manufacturer: Intersil Corporation

Timing Diagrams
ACCEPTED
ADDRESS
OF DATA)
(PER BIT
OUTPUT
CLOCK
WRITE
INPUT
INPUT
INPUT
INPUT
INPUT
DATA
DATA
DATA
DATA
CS
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t
WLL
t
CI
t
DS
FIGURE 2. ICM7232 ONE DIGIT INPUT TIMING DIAGRAM, WRITING BOTH ANNUNCIATORS
1
VALID
DATA
AN1
t
WP
RESETS SHIFT REGISTER
AND INPUT CONTROL
LOGIC WHEN DATA
ACCEPTED HIGH
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xxxxxx
xxxxxx
xxxxxx
t
DH
2
VALID
DATA
AN2
t
FIGURE 1. ICM7231 INPUT TIMING DIAGRAM
CI
xxxxx
xxxxx
xxxxx
xxxxx
INPUTS VALID
t
AND DATA
ADDRESS
CS
t
DS
ICM7231, ICM7232
3
VALID
DATA
BD0
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DO NOT CARE
9-25
t
t
ICS
DH
t
ODL
8
VALID
DATA
A1
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xxxxxx
xxxxxx
xxxxxx
xxxxxx
INPUTS VALID
AND DATA
ADDRESS
WITH NO WRITE PULSE
DO NOT CARE
9
VALID
DATA
RESETS SR + LOGIC
A2
ELEVENTH CLOCK
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xxxxxx
xxxxxx
xxxxxx
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t
CWS
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10
VALID
DATA
A3
t
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ODH
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DECODES AND STORES
DATA, RESETS SHIFT
REGISTER AND LOGIC
WHEN DATA ACCEPTED
IS LOW
t
ODL
t
WP