FD2000 FINECHIPS [Finechips], FD2000 Datasheet - Page 9

• Manufacturer Part Number: FD2000
• Description: LCD Display Driver
• Manufacturer: FINECHIPS [Finechips]

FD2000
6. BLOCK FUNCTIONS
6.1. AC (ADDRESS COUNTER)
AC is a counter that provides the addresses used for DCRAM and ADRAM.
The address is automatically modified internally, and the LCD display state is retained.
6.2. DCRAM (DATA CONTROL RAM)
DCRAM is RAM that is used to store display data expressed as 8-bit character codes. (These character codes are
converted to 5 x 7, 5 x 8, or 5 x 9 dot matrix character patterns using CGROM or CGRAM.) DCRAM has a
capacity of 48 x 8 bits, and can hold 48 characters. The table below lists the correspondence between the 6-bit
DCRAM address loaded into AC and the display position on the LCD panel.
− When the DCRAM address loaded into AC is 00H.
Display digit
DCRAM address(HEX)
However, when the display shift is performed by specifying MDATA, the DCRAM address shifts as shown below.
Display digit
DCRAM address(HEX)
Display digit
DCRAM address(HEX)
NOTE: The DCRAM addresses are expressed in hexadecimal.
DCRAM address
−
NOTE: 5 x 7 dots ... 12-digit display
LSB
DA0
0
Example: When the DCRAM address is 2EH.
DA1
5 x 8 dots ... 12-digit display
5 x 9 dots ... 12-digit display
1
DA2
1
←
LSB
DA0
DA3
1
00
01
2F
1
1
1
DA1
HEX
DA4
01
02
00
2
2
2
0
DA2
02
03
01
3
3
3
DA5
MSB
1
DA3
03
04
02
4
4
4
→
5 x 7 dots
4 x 8 dots
3 x 9 dots
04
05
03
5
5
5
DA4
← HEX →
05
06
04
6
6
6
DA5
MSB
06
07
05
7
7
7
07
08
06
8
8
8
08
09
07
9
9
9
0A
10
09
10
10
08
0A
0B
11
11
11
09
0B
0C
0A
12
12
12
(Left shift)
(Right shift)
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