參數(shù)資料
型號: MC68HC05L25PB
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP52
封裝: TQFP-52
文件頁數(shù): 10/152頁
文件大?。?/td> 897K
代理商: MC68HC05L25PB
LCD Connection and LCD Driver Operation
MC68HC05L25 Data Sheet, Rev. 3.1
Freescale Semiconductor
107
11.5 LCD Connection and LCD Driver Operation
The connection between the MC68HC05L25 and the seven segments of the LCD panel is discussed in
the following paragraphs.
Figure 11-9 illustrates a 1/3 duty example.
Pins BP0, BP1, BP2, FP0, FP1, and FP2 output the waveforms illustrated in Figure 11-10.
Figure 11-9. 1/3 Duty Example
FP CONNECTION
BP CONNECTION
a
f
e
b
c
g
d
BP0 (a, b CONNECTED)
BP1 (c, f, g CONNECTED)
BP2 (d, e CONNECTED)
FP0 FP1 FP2
(e, f) (a, d, g) (b, c)
a
f
e
b
c
g
d
———
X
1
FP2
—1
0
0
1
X
0
FP1
FP0
————
C
B
FP2
—G
A
E
F
D
FP1
FP0
The segment assignments for each bit in the data latch are:
(— means not assigned in this case)
To display a 4 using the assignments above will have the following data
written to LDAT1 and LDAT2.
(Unrelated FP)
(X . . . don’t care)
(—, X . . . are zero in this case)
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