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ST7921 Datasheet(PDF) 3 Page - Sitronix Technology Co., Ltd.

Part # ST7921
Description  96CH Segment Driver For Dot Matrix LCD
PDF  11 Pages
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Manufacturer  SITRONIX [Sitronix Technology Co., Ltd.]
Direct Link  http://www.sitronix.com.tw
Logo SITRONIX - Sitronix Technology Co., Ltd.

ST7921 Datasheet(HTML) 3 Page - Sitronix Technology Co., Ltd.

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ST7921
Ver 1.6
3/11
2005/05/24
Pin Description :
Pin Name
Purpose
Description
I/O
VDD
POWER
for logic
N/A
VSS
GROUND
for logic
N/A
V0
V2
V3
LCD Power
for LCD driving voltage
I
S1-S48
segment
LCD driver output for part 1
O
SHL1
direction
direction control for part 1 segments
I
DL1, DR1
data in /out
If SHL1 = 1 then DL1=out, DR1=in
If SHL1 = 0 then DL1=in, DR1=out
I/O
S49-S96
segment
LCD driver output for part 2
O
SHL2
direction
direction control for part 2 segments
I
DL2, DR2
data in/out
If SHL2 = 1 then DL2=out, DR2=in
If SHL2 = 0 then DL2=in, DR2=out
I/O
M
alternation
Alternate the LCD driving waveform
I
CL1
latch clock
latch the data after shift is completed
I
CL2
shift clock
shift the data into the segments
I



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