MC9S12HY64 Datasheet, PDF (681/792 Pages) Freescale Semiconductor, Inc – S12 Microcontrollers

Liquid Crystal Display (LCD40F4BV1) Block Description
18.4.4.4 1/3 Duty Multiplexed with 1/3 Bias Mode
Duty = 1/3:DUTY1 = 1, DUTY0 = 1
Bias = 1/3:BIAS = 0 or BIAS = 1
V₀ = VSSX, V₁ = VLCD * 1/3, V₂ = VLCD * 2/3, V₃ = VLCD
- BP3 is not used, a maximum of 120 segments are displayed.
1 Frame
BP0
BP1
BP2
FPx (x010)
BP0-FPx (OFF)
BP1-FPx (ON)
Figure 18-13. 1/3 Duty and 1/3 Bias
VLCD
VLCD × 2/3
VLCD × 1/3
VSSX
VLCD
VLCD × 2/3
VLCD × 1/3
VSSX
VLCD
VLCD × 2/3
VLCD × 1/3
VSSX
VLCD
VLCD × 2/3
VLCD × 1/3
VSSX
+VLCD
+VLCD × 2/3
+VLCD × 1/3
0
-VLCD × 1/3
-VLCD × 2/3
-VLCD
+VLCD
+VLCD × 2/3
+VLCD × 1/3
0
-VLCD × 1/3
-VLCD × 2/3
-VLCD
MC9S12HY/HA-Family Reference Manual, Rev. 1.04
Freescale Semiconductor
681