120 SEG / 34 COM DRIVER & CONTROLLER FOR DOT MATRIX LCD
S6A0078
DISPLAY DATA RAM (DDRAM)
DDRAM stores display data of maximum 96 x 8 bits (96 characters). DDRAM address is set in the address
counter (AC) as a hexadecimal number. (refer to Figure 1)
MSB
LSB
AC6 AC5 AC4 AC3 AC2 AC1 AC0
Figure 1. DDRAM Address
Display of 5-dot Font Width Character
5-dot 1-line Display
In case of 1-line display with 5-dot font, the address range of DDRAM is 00H-5FH (Refer to Figure 2).
Display Position
12345
COM1
COM8
00 01 02 03 04
SEG1
20 21 22 23 24 25 26 27 28 29
44 45 46 47 48
....
13 14 15 16 17 18 19 1A 1B 1C
....
2B 2C 2D 2E 2F
COM9
COM16
SEG120 SEG1
DDRAM Address
SEG120
S6A0078
S6A0078
12345
COM1
COM8
01 02 03 04 05
20 21 22 23 24 25 26 27 28 29
. . . . 14 15 16 17 18 19 1A 1B 1C 1D
(After Shift Left)
44 45 46 47 48
....
2C 2D 2E 2F 30
COM9
COM16
12345
COM1
COM8
5F 00 01 02 03
20 21 22 23 24 25 26 27 28 29
. . . . 12 13 14 15 16 17 18 19 1A 1B
(After Shift Right)
44 45 46 47 48
....
2A 2B 2C 2D 2E
COM9
COM16
Figure 2. 1-line X 48ch. Display
11