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CHAPTER 18 LCD CONTROLLER/DRIVER
User’s Manual U15798EJ2V0UD
(4) Static/dynamic display switching register 3 (SDSEL3)
This register is used to select the static or dynamic display mode of the segment pins (S0 to S11).
It can be set by an 8-bit memory manipulation instruction.
RESET input sets the value of this register to 00H.
Figure 18-7. Format of Static/Dynamic Display Switching Register 3 (SDSEL3)
Address: FF92H After reset: 00H R/W
Symbol
7
6
5
4
3
2
1
0
SDSEL3
0
0
0
0
0
SDSEL32
SDSEL31
SDSEL30
SDSEL32
SDSEL31
SDSEL30
Number of segments
Number of segments
(for static display mode)
(for dynamic display mode)
0
0
0
—
S0 to S39
0
0
1
S0 to S3
S4 to S39
0
1
1
S0 to S7
S8 to S39
1
1
1
S0 to S11
S12 to S39
Setting other than above is prohibited.
—
Caution Do not rewrite SDSEL3 while the LCD is operating. Be sure to set this bit while LCDON = 0,
SCOC = 0, and VLCON = 0. Note that SDSEL3 can be set only once after reset.
Содержание mPD780344 Series
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