Datasheet

8
Figure 1. Internal block diagram.
CHARACTER RAM ASCII DECODER
CHARACTER/CURSOR
MULTIPLEXER
WRITE
ADDRESS
A
0
– A
1
2
D
0
– D
6
7
DATA IN
DATA
OUT
7
CHARACTER
SELECT
COLUMN
DATA
5
0
3
ROW
SELECT
OSC + 32 + 7
DIGITAL
DUTY
CONTROL
ROW
DRIVERS
DISPLAY
COLUMN
DRIVERS
ROW
SELECT
BLANK
CLR
ATTRIBUTE RAM
DIGIT CURSORD
0
D
1
DIGIT BLANK
DISABLE
CLR
CONTROL REGISTER
MASTER
BLANK
D
2
D
3
– D
5
3
BRIGHTNESS
LEVELS
CLR
D
6
EXTENDED
FUNCTIONS
DISPLAY
WRITE
CLR
CLR
CLR
WRITE
2
READ
ADDRESS
5
1
CURSOR
CHARACTER
CHARACTER/
CURSOR
MULTIPLEXER
SELECT
CUE
DC
n
(4 x 7)
CE
1
CE
2
WR
CU
CE
1
CE
2
WR
CU
WRITE
WRITE ADDRESSA
0
– A
1
READ ADDRESS
2
(2 x 4)
1 x 5
3
4 (LSBs)
2 (MSBs)
3
EFD
EFD
EFD
DBD
n
MB
BL