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| MC68HC08LT8 Datasheet, PDF (87/156 Pages) Freescale Semiconductor, Inc – Microcontrollers | |||
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DUTY = 1/3
BP0
1FRAME
Seven Segment Display Connection
VLCD
VLCD1
VLCD2
VLCD3
VLCD
BP1
VLCD1
VLCD2
VLCD3
BP2
F0B2 F0B1 F0B0
â
0
1
0
FP0
VLCD
VLCD1
VLCD2
VLCD3
VLCD
VLCD1
VLCD2
VLCD3
F1B2 F1B1 F1B0
â
0
1
0
FP1
VLCD
VLCD1
VLCD2
VLCD3
F2B2 F2B1 F2B0
â
0
1
1
FP2
VLCD
VLCD1
VLCD2
VLCD3
Figure 8-13. BP0âBP2 and FP0âFP2 Output Waveforms for 7-Segment Display Example
The voltage waveform across the "f" segment of the LCD (between BP1 and FP0) is illustrated in
Figure 8-14. As shown in the waveform, the voltage peaks reach the LCD-ON voltage, VLCD, therefore,
the segment will be ON.
BP1âFP0
+ VLCD
+ VLCD1
+ VLCD2
0
â VLCD2
â VLCD1
â VLCD
Figure 8-14. "f" Segment Voltage Waveform
MC68HC08LT8 Data Sheet, Rev. 1
Freescale Semiconductor
87
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