LC74751 データシートの表示（PDF） - SANYO -> Panasonic
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コンポーネント説明
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LC74751 Datasheet PDF : 15 Pages
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LC74751
Memory (Display ROM) Organization
This memory has addresses ranging from 0 (000 hexadecimal) to 1535 (5FF hexadecimal).
Data has 8 bits.
Bit DA DA DA DA DA DA DA DA DA DA DA DA DA DA DA DA
Address
F
E
D
C
B
A
9
8
7
6
5
4
3
2
1
0
Notes
000
ROM/
Line ROM: First character in the
(000h)
0
0
0
0
0
0
0
0 RAM ADR6 ADR5 ADR4 ADR3 ADR2 ADR1 ADR0 first line
0023
ROM/
Line ROM: 24th character in the
(017h)
0
0
0
0
0
0
0
0 RAM ADR6 ADR5 ADR4 ADR3 ADR2 ADR1 ADR0 first line
0024
ROM/
Line ROM: First character in the
(018h)
0
0
0
0
0
0
0
0 RAM ADR6 ADR5 ADR4 ADR3 ADR2 ADR1 ADR0 second line
ROM/
RAM
Character code
1535
ROM/
Line ROM: 24th character in the
(5FFh)
0
0
0
0
0
0
0
0 RAM ADR6 ADR5 ADR4 ADR3 ADR2 ADR1 ADR0 64th line
DA
0 to 8
0
1
2
3
4
5
6
7
Register
ADR0
ADR1
ADR2
ADR3
ADR4
ADR5
ADR6
ROM/
RAM
Contents
State
Function
0 Specifies an address in character ROM.
When specifying display control RAM, DA7 must be set to 1 and ADR0 to
1 ADR6 must be set to 0.
0 The address specification range for character ROM is 0 to 127 (7F
hexadecimal).
1
0
1
0
1
0
1
0
1
0
1
0 Data is read directly from character ROM.
1 Data is read from character ROM through RAM.
Notes
No. 5396-11/15
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