hd61603r ETC-unknow, hd61603r Datasheet - Page 9

• Manufacturer Part Number: hd61603r
• Description: Segment Type Lcd Driver
• Manufacturer: ETC-unknow

HD61602/HD61603
3. 1/3 duty cycle drive
4. 1/4 duty cycle drive
1238
In the 1/3 duty cycle drive, the columns of COM0 to COM2 are output in time sharing. No column of
COM3 is displayed.
“Y” cannot be rewritten by display data (input on an 8-segment basis). Please use bit manipulation to
turn on/off the display of “Y” (Figure 4).
In the 1/4 duty cycle drive, all the columns of COM0 to COM3 are displayed (Figure 5).
Figure 4 Example of Correspondence between LCD Connection and Display RAM
Figure 5 Example of Correspondence between LCD Connection and Display RAM
Y
f
e
e
d
f
LCD connection
LCD connection
g
d
a
g
a
DP
DP
c
b
b
c
COM2
COM1
COM0
COM3
COM2
COM1
COM0
(1/3 Duty Cycle, HD61602)
(1/4 Duty Cycle, HD61602)
COM3
COM2
COM1
COM0
COM3
COM2
COM1
COM0
SEG3
Y
e
SEG2
f
g
e
d
f
Display RAM
SEG4
Display RAM
a
g
d
SEG3
DP
a
b
c
SEG5
DP
b
c
SEG4
SEG6