UPD161401WSLASHP datasheet(76/126 Pages) RENESAS

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Data Sheet S15726EJ2V0DS

µµµµPD161401

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.

CSA4

CSA3

CSA2

CSA1

CSA0

Table 6

−−−−11. COM Scanning Address Setting Register (1/2)

CSA4

CSA3

CSA2

CSA1

CSA0

000

001

010

110

111

000

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

Scanning start

(COM1) pin

→

Scanning end

(COMa)

Note pin

→

O(n+a

−1) Note

O(82

−a−n)

→

O(80

−n+1) Note

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

µµµµPD161401 operation is not

guaranteed.

≤≤≤≤ Scan start pin and scan end pin ≤≤≤≤ O80

UPD161401W/P Datasheet(PDF) 76 Page - Renesas Technology Corp

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