參數(shù)資料
型號: UPD161401W
廠商: NEC Corp.
英文描述: 256-COLOR, 1/80-DUTY LCD CONTROLLER/DRIVER WITH ON-CHIP RAM
中文描述: 256色,1/80-DUTY LCD控制器/驅(qū)動器,片內(nèi)RAM
文件頁數(shù): 74/124頁
文件大小: 647K
代理商: UPD161401W
Data Sheet S15726EJ2V0DS
74
μ
PD161401
6.17 COM Scanning Address Setting Register (R21)
This command specifies that scanning of the common outputs can be started from any of the On (n = 1 to 80) output
pins. Set the CSA4 to CSA0 bits as shown in
Table 6
11 (1/2)
. The scan start pin can be specified by the value n
obtained from this table and the selected duty shown in
Table 6
11 (2/2)
. The common wiring on the LCD panel can be
optimized according to the selected duty.
Tables 6
12
,
6
13
, and
6
14
indicate examples of the COM scan address settings for 1/64 duty, 1/72 duty, and 1/80
duty.
RS
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
1
CSA4
CSA3
CSA2
CSA1
CSA0
Table 6
11. COM Scanning Address Setting Register (1/2)
CSA4
CSA3
CSA2
CSA1
CSA0
n
0
0
0
0
0
0
0
0
0
0
0
1
0
1
0
1
2
3
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
0
1
0
1
15
16
17
Other settings prohibited
Table 6
11. COM Scanning Address Setting Register (2/2)
COMR = 0
COMR = 1
Scanning start
(COM1) pin
Scanning end
(COMa)
Note
pin
O(n+a
1)
Note
Scanning start
(COM1) pin
O(82
a
n)
Scanning end
(COMa)
Note
pin
O(80
n+1)
Note
On
Note
a = 64: 1/64 duty
a = 72: 1/72 duty
a = 80: 1/80 duty
Caution Set the COM scan address setting register so that the scan start pin and scan end pin satisfy the
equation below. If a value that exceeds this condition is set, the
μ
PD161401 operation is not
guaranteed.
O
1
Scan start pin and scan end pin
O
80
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