Datasheet

DLR1414, DLO1414, DLG1414
2006-01-23 7
Block Diagram
IDBD5072
RAM Read Logic
D0
D1
D2
D3
D4
D6
D5
Memory
RAM
4 x 7 bit
Write
Address
Decoder
A0
WR
A1
Row Decoder
ROM
ASCII
128 x 35 bit
Character
Decode
4480 bits
Column Decoder
Latches
7-bit ASCII Code
Column
Latches and
Enable
Column Data
Row Drivers
&
Row Control Logic
OSC
128
Counter
Counter
7
Rows 0 to 6
3 2 1 0
Timing and Control Logic
Columns 0 to 19
Display
Drivers
Column