ST7533 Sitronix Technology, ST7533 Datasheet - Page 18

• Manufacturer Part Number: ST7533
• Description: 33 x 96 Dot Matrix LCD Controller/Driver
• Manufacturer: Sitronix Technology

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ST7533
The Common Output Status Select Circuit
In the ST7533 chips, the COM output scan direction can be
selected by the common output status select command.
The LCD Driver Circuits
These are a 129-channel, that generate four voltage levels
for driving the LCD . The combination of the display data, the
COM scan signal, and the FR signal produces the liquid
Ver 1.0
Duty
1/33
1/17
Com
dir
0
1
0
1
0
1
com[31:23]
2
com[15:8]
com[0:7]
com[0:7]
3
4
5
6
Status
Normal
Reverse
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
com[0:15] Common output pins com[16:31]
com[23:16]
com[8:15]
COM0 → COM31
COM31 → COM0
1/33 DUTY
COM Scan Direction
Table 6
18/60
reserve
reserve
(See Table 6.) Consequently, the constraints in IC layout at
the time of LCD module assembly can be minimized.
crystal drive voltage output.
Figure-6 shows examples of the SEG and COM output
wave form.
COM0 → COM15
COM15 → COM0
1/17 DUTY
com[16:23]
com[15:8]
com[8:15]
com[7:0]
com[23:31]
com[7:0]
2003/07/21
coms
coms
coms
coms
coms