MC68HC05L16 Datasheet, PDF (98/146 Pages) Freescale Semiconductor, Inc – Microcontrollers

LCD Driver
DUTY = 1/4
BIAS = 1/3 (VLCD1 = V_DD–VLCD/3, VLCD2 = V_DD–2VLCD/3, VLCD3 = V_DD–VLCD)
1FRAME
V_DD
VLCD1
BP0
VLCD2
VLCD3
V_DD
VLCD1
BP1
VLCD2
VLCD3
V_DD
VLCD1
BP2
VLCD2
VLCD3
V_DD
VLCD1
BP3
VLCD2
VLCD3
FPX
(1001)
V_DD
VLCD1
VLCD2
VLCD3
BP0–FPX
(ON)
+VLCD
+2VLCD/3
+VLCD/3
0
–VLCD/3
–2VLCD/3
–VLCD
+VLCD
+2VLCD/3
BP1–FPX
(OFF)
+VLCD/3
0
–VLCD/3
–2VLCD/3
–VLCD
Figure 10-4. LCD 1/4 Duty and 1/3 Bias Timing Diagram
MC68HC05L16 • MC68HC705L16 Data Sheet, Rev. 4.1
98
Freescale Semiconductor