Common Pin Assignment - Epson S1C31W65 Technical Manual

21 LCD DRIVER (LCD8D)
21.6.2 Segment Pin Assignment
The display data RAM address assignment for the segment pins can be inverted using the LCD8DDSP.SEGREV
bit. When the LCD8DDSP.SEGREV bit is set to 1, memory addresses are assigned to segment pins in ascending
order. When the LCD8DDSP.SEGREV bit is set to 0, memory addresses are assigned to segment pins in descend-
ing order.

21.6.3 Common Pin Assignment

The display data RAM bit assignment for the common pins can be inverted using the LCD8DDSP.COMREV bit.
When the LCD8DDSP.COMREV bit is set to 1, memory bits are assigned to common pins in ascending order.
When the LCD8DDSP.COMREV bit is set to 0, memory bits are assigned to common pins in descending order.
Bit
D0
D1
D2
D3
D4
D5
D6
D7
D0
D1
D2
D3
D4
D5
D6
D7
LCD8DDSP.
SEGREV bit = 1
LCD8DDSP.
SEGREV bit = 0
Bit
D0
D1
D2
D3
D4
D5
D6
D7
D0
D1
D2
D3
D4
D5
D6
D7
LCD8DDSP.
SEGREV bit = 1
LCD8DDSP.
SEGREV bit = 0
21-18
Address
Display area 0
Display area 1
Figure 21.6.3.1 Display Data RAM Map (1/8 duty)
Address
Display area 0
Unused area
Display area 1
Unused area
Figure 21.6.3.2 Display Data RAM Map (1/6 duty)
Seiko Epson Corporation
· · ·
· · ·
(general-purpose RAM)
(general-purpose RAM)
· · ·
· · ·
S1C31W65 TECHNICAL MANUAL
LCD8DDSP. LCD8DDSP.
COMREV COMREV
bit = 1 bit = 0
COM0 COM7
COM1 COM6
COM2 COM5
COM3 COM4
COM4 COM3
COM5 COM2
COM6 COM1
COM7 COM0
COM0 COM7
COM1 COM6
COM2 COM5
COM3 COM4
COM4 COM3
COM5 COM2
COM6 COM1
COM7 COM0
LCD8DDSP. LCD8DDSP.
COMREV COMREV
bit = 1 bit = 0
COM0 COM5
COM1 COM4
COM2 COM3
COM3 COM2
COM4 COM1
COM5 COM0
COM0 COM5
COM1 COM4
COM2 COM3
COM3 COM2
COM4 COM1
COM5 COM0
(Rev. 1.1)