S6A0075 Datasheet, PDF (11/70 Pages) Samsung semiconductor – 100 SEG / 34 COM DRIVER & CONTROLLER FOR DOT MATRIX LCD

100 SEG / 34 COM DRIVER & CONTROLLER FOR DOT MATRIX LCD
S6A0075
BUSY FLAG (BF)
When BF = "High", it indicates that the internal operation is being processed. So during this time the next
instruction cannot be accepted. BF can be read, when RS = Low and R/W = High (Read Instruction Operation),
through DB7. Before executing the next instruction, be sure that BF is not high.
DISPLAY DATA RAM (DDRAM)
DDRAM stores display data of maximum 80 x 8 bits (80 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-4FH. (refer to Figure 2)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
COM1
COM8
00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13
SEG1
S6A0075
SEG100
Display Position
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20 21 22 23 24 25 26 27
COM9
COM16
SEG1
DDRAM Address
SEG100
S6A0075
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
COM1
COM8
01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 1F 10 11 12 13 14
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
15 16 17 18 19 1A 1B 1C 1D 1E 1F 20 21 22 23 24 25 26 27 28
(After Shift Left)
COM9
COM16
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
COM1
COM8
4F 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 1F 10 11 12
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20 21 22 23 24 25 26
(After Shift Right)
COM9
COM16
Figure 2. 1-line x 40ch. Display
11