參數(shù)資料
型號: MC68HC08LT8CFGE
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PQFP44
封裝: 10 X 10 MM, 1.40 MM THICKNESS, 0.80 MM PITCH, ROHS COMPLIANT, MS-026BCB, LQFP-44
文件頁數(shù): 137/156頁
文件大?。?/td> 1107K
代理商: MC68HC08LT8CFGE
I/O Signals
MC68HC08LT8 Data Sheet, Rev. 1
Freescale Semiconductor
81
8.6 I/O Signals
The LCD driver module has twenty-eight (28) output pins.
FP0/BP3 (multiplexed; selected as FP0 or BP3 by DUTY[1:0])
BP0–BP2
FP1–FP2 (shared with port B)
FP3–FP10 (shared with port E)
FP11–FP18 (shared with port D)
FP19–FP24 (shared with port C)
8.6.1 BP0–BP3 (Backplane Drivers)
BP0–BP3 are the backplane driver output pins. These are connected to the backplane of the LCD panel.
Depending on the LCD duty selected, the voltage waveforms in Figure 8-5, Figure 8-6, and Figure 8-7
appear on the backplane pins.
BP3 pin is only used when 1/4 duty is selected. The pin becomes FP0 for static and 1/3 duty operations.
Figure 8-5. Static LCD Backplane Driver Waveform
Figure 8-6. 1/3 Duty LCD Backplane Driver Waveforms
1FRAME
DUTY = STATIC
BP0
VLCD
VLCD1
VLCD3
VLCD2
1. BP1, BP2, and BP3 are not used.
2. At static duty, 1FRAME is equal to the cycle of LCD waveform base clock.
NOTES:
1FRAME
DUTY = 1/3
BP0
VLCD
VLCD1
VLCD3
VLCD
VLCD2
VLCD3
VLCD
VLCD1
VLCD2
VLCD3
VLCD2
VLCD1
BP1
BP2
1. BP3 is not used.
2. At 1/3 duty, 1FRAME has three times the cycle of LCD waveform base clock.
NOTES:
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