NJU3430 データシートの表示（PDF） - Japan Radio Corporation
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NJU3430
Japan Radio Corporation
NJU3430 Datasheet PDF : 18 Pages
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NJU3430
n FUNCTION DESCRIPTION
(1)CG RAM data and Character Dot Matrix
The character generator RAM (CG RAM) stores any kinds of character pattern by 5 x 7 dots written by the user
program to display user’s original character pattern. The CG RAM stores 8 kinds of character by 5 x 7 dots maximum.
To display user’s original character pattern stored in the CG RAM, the address data (00)H - (07) should be written
to the DD RAM as shown in Table 2.
Table 1.Correspondence of CG RAM address, DD RAM character code
and CG RAM character pattern(5 x 7 dots).
Character
Code
(DD RAM
Data)
CG RAM Address
Correspondence of CG RAM Data
and SEG Terminal
AC5 AC4 AC3 AC2 AC1 AC0 SC4 SC3 SC2 SC1 SC0
(00)H
(01)H
0
0
0
S1
S2
S3
S4
S5
0
0
1
S6
S7
S8
S9
S10
0
1
0
S 11 S 12 S 13 S 14 S 15
0
1
1
S16 S17 S18 S19 S20
0
0
0
1
0
0
S 21 S22 S23 S24 S25
1
0
1
S26 S27 S28 S29 S30
1
1
0
S 31 S32 S33 S34 S35
1
1
1
Invalid Address
0
0
0
S1
S2
S3
S4
S5
0
0
1
S6
S7
S8
S9
S10
0
1
0
S 11 S 12 S 13 S 14 S 15
0
1
1
S16 S17 S18 S19 S20
0
0
1
1
0
0
S 21 S22 S23 S24 S25
1
0
1
S26 S27 S28 S29 S30
1
1
0
S 31 S32 S33 S34 S35
1
1
1
Invalid Address
:
:
:
:
:
:
:
:
:
:
:
:
(07)H
0
0
0
S1
S2
S3
S4
S5
0
0
1
S6
S7
S8
S9
S10
0
1
0
S 11 S 12 S 13 S 14 S 15
0
1
1
S16 S17 S18 S19 S20
1
1
1
1
0
0
S 21 S22 S23 S24 S25
1
0
1
S26 S27 S28 S29 S30
1
1
0
S 31 S32 S33 S34 S35
1
1
1
Invalid Address
* When the data is written to CG RAM successively, the invalid address is skipped automatically.
(Ex.)CG RAM Address : (06)H
CG RAM Address : (08)H
After data writing operation
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