W741L250 Datasheet, PDF (26/86 Pages) Winbond – 4-BIT MICROCONTROLLER

W741L250
The output waveforms for the five LCD driving modes are shown below.
Static Lighting System (Example)
Normal Operating Mode
COM0
Unlit LCD driver
outputs
Lit LCD driver
outputs
VDD2
VDD1
VSS
VDD2
VDD1
VSS
VDD2
VDD1
VSS
1/2 Bias 1/2 Duty Lighting System (Example)
Normal Operating Mode
COM0
COM1
LCD driver
outputs for
seg. on COM0,
COM1 sides
being unlit
LCD driver
outputs for
only seg. on
COM0 side
being lit
LCD driver
outputs for
only seg. on
COM1 side
being lit
LCD driver
outputs for
seg. on COM0,
COM1 sides
being lit
VDD2
VDD1
VSS
VDD2
VDD1
VSS
VDD2
VDD1
VSS
VDD2
VDD1
VSS
VDD2
VDD1
VSS
VDD2
VDD1
VSS
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