ST7522 Sitronix, ST7522 Datasheet - Page 26

• Manufacturer Part Number: ST7522
• Description: 17 x 96 Dot Matrix LCD Controller
• Manufacturer: Sitronix

ST7522
B=1: set booster circuit on, which makes Vcap3 has 2 time voltage
B=0: set booster circuit off, which make Vcap3 have 1 time voltage only. (default)
F=1: set follower circuit on, the V5 electric volume can adjust by internal follower circuit with command set.
F=0: set follower circuit off, the V1~V5 must connect to external voltage divider and adjust V5 level by external divider. (default)
Note:
ensure V5 level stable, that must let |Vcap3-V5| over 0.5V(if panel size over 4.5”,the |Vcap3-V5| propose over 0.8V).
Ver 1.0c
A0
0
Power control
―
RD
1
B
0
0
1
1
WR
―
GND
0
V
CC
(System side)
F
0
1
0
1
Step- up circuit Follower circuit
D7
0
Open
Open
Used
Used
Booster and follower on/off condition table
D6
0
V
V
DD
SS
Open
Open
Used
used
D5
1
Vcap3
26/45
D4
Vcap3 connect to V5
V1~V5 connect to external resistor
Vcap3 connect to external power supply
V1~V5 connect to external resistor
0
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D3
(ST7522 Side)
1
External input voltage
|Vcap3-V5|>0.5V(minimum)
D2
B
-
D1
x
V
D0
5
F
V
DD
2002/07/10
Datasheet pdf - http://www.DataSheet4U.net/