hd61603r ETC-unknow, hd61603r Datasheet - Page 12

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

HD61603 Display RAM
The HD61603 has an internal display RAM as shown in Figure 8. Display data is stored in the RAM and
output to the segment output terminal.
Reading Data from Display RAM: Each bit of the display RAM corresponds to an LCD segment. The
data at segment address SEGn is output to segment output SEGn terminal. Figure 9 shows an example of
the correspondence between the display RAM bit and the display pattern when a 7-segment type LCD is
connected.
Writing Data into Display RAM: Data is written into the display RAM in the following two methods:
1. Bit manipulation
2. Static display mode
Figure 9 Example of Correspondence between Display RAM Bit and Display Pattern (HD61603)
Data is written into any bit of RAM on a bit basis.
8-bit data is written on a digit basis according to the 7-segment type LCD pattern of static drive.
1 bit
(COM0)
e
f
LCD connection
a
d
g
DP
c
b
Figure 8 Display RAM (HD61603)
COM0
COM0
Segment address (SEG0–SEG63)
SEG8 SEG9 SEG10 SEG11 SEG12 SEG13 SEG14 SEG15
f
Display RAM
e
64 bits
d
Display RAM
c
DP
g
b
HD61602/HD61603
a
SEG16
1241