TMP86FS28DFG Datasheet, PDF (214/272 Pages) Toshiba Semiconductor – 8 Bit Microcontroller

16. LCD Driver
16.4 Control Method of LCD Driver
TMP86FS28DFG
Example :To display using 1/4 duty LCD a numerical value which corresponds to the LCD data stored in data mem-
ory at address 80H (when pins COM and SEG are connected to LCD as in Figure 16-6), display data
become as shown in Table 16-6.
LD
A, (80H)
ADD
A, TABLE-$-7
LD
HL, 0F80H
LD
W, (PC + A)
LD
(HL), W
RET
TABLE:
DB
11011111B, 00000110B,
11100011B, 10100111B,
00110110B, 10110101B,
11110101B, 00010111B,
11110111B, 10110111B
Note:DB is a byte data difinition instruction.
SEG0
SEG1
COM0
COM1
COM2
COM3
Figure 16-6 Example of COM, SEG Pin Connection (1/4 Duty)
Table 16-6 Example of Display Data (1/4 Duty)
No.
display
Display data
No.
display
0
11011111
5
Display data
10110101
1
00000110
6
11110101
2
11100011
7
00000111
3
10100111
8
11110111
4
00110110
9
10110111
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