Lcd Wavefo�M Timing Diag�Am - Holtek TinyPower HT69F40A Manual

HT69F30A/HT69F40A/HT69F50A
TinyPower I/O Flash 8-Bit MCU with LCD & EEPROM
TM
LCD Waveform Timing Diagram
The accompanying timing diagrams depict the display driver signals generated by the
microcontroller for various values of duty and bias. The huge range of various permutations only
permits a few types to be displayed here.
D u r i n g R e s e t o r L C D F u n c t i o n i s s w i t c h e d o f f
L C D F u n c t i o n i n N o r m a l O p e r a t i o n M o d e
Rev. 1.20
C O M 0 , C O M 1 , C O M 2
A l l s e g m e n t o u t p u t s
C O M 0
C O M 1
C O M 2 
A l l s e g m e n t s O F F
C O M 0 s e g m e n t s O N
C O M 1 s e g m e n t s O N
C O M 2 s e g m e n t s O N
C O M 0 , 1 s e g m e n t s O N
C O M 0 , 2 s e g m e n t s O N
C O M 1 , 2 s e g m e n t s O N
A l l s e g m e n t s O N
LCD Driver Output – Type A- 1/3 Duty, 1/2 Bias
Note: For 1/2 Bias, the V =V
A LCD
177
R t y p e b i a s
C t y p e b i a s
R t y p e b i a s
C t y p e b i a s
1 F r a m e
, V =V ×1/2 for both R and C type.
B LCD
V
L C D
V
S S
V
L C D
V
S S
V
A
V
B
V
S S
V
A
V
B
V
S S
V
A
V
B
V
S S
V
A
V
B
V
S S
V
A
V
B
V
S S
V
A
V
B
V
S S
V
A
V
B
V
S S
V
A
V
B
V
S S
V
A
V
B
V
S S
V
A
V
B
V
S S
V
A
V
B
V
S S
��to�e� 0�� 201�