NJU6475B Ver la hoja de datos (PDF) - Japan Radio Corporation
Número de pieza
componentes Descripción
Fabricante
NJU6475B
Japan Radio Corporation
NJU6475B Datasheet PDF : 45 Pages
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NJU6475B
(1-6) Icon display RAM (MK RAM)
The NJU6475B can display maximum 128 Icons.
The Icon display can be controlled by writing the data into MK RAM corresponding to the Icons.
The relation between MK RAM address and Icon display position is shown in Table-4.
<Table-4> Correspondence among Icon Position, MK RAM Address and Data
MK RAM Address
(60H - 7FH)
0110 0000 60H
0110 0001 61H
Bits for Icon Position MK RAM Address and Data
D7
D6
D5
D4
D3
D2
D1
D0
*
*
*
1
2
3
4
97
*
*
*
5
6
7
8
98
COMM1 Line and
0110 0101 65H
*
*
*
21 22 23 24 102
0110 0110 66H
*
*
*
*
*
*
* 103
0110 0111 67H
*
*
*
*
*
*
* 104
0110 1000 68H
*
*
*
25 26 27 28 105
0110 1001 69H
*
*
*
29 30 31 32 106
Both besides of 1st Line
(COM1,COM3,COM5,COM7)
COMM2 Line and
0110 1101 6DH *
*
*
45 46 47 48 110
0110 1110 6EH *
*
*
*
*
*
* 111
0110 1111 6FH
*
*
*
*
*
*
* 112
0111 0000 70H
*
*
*
49 50 51 52 113
0111 0001 71H
*
*
*
53 54 55 56 114
Both besides of 2nd Line
(COM9,COM11,COM13,COM15)
COMM3 Line and
0111 0101 75H
*
*
*
69 70 71 72 118
0111 0110 76H
*
*
*
*
*
*
* 119
0111 0111 77H
*
*
*
*
*
*
* 120
0111 1000 78H
*
*
*
73 74 75 76 121
0111 1001 79H
*
*
*
77 78 79 80 122
Both besides of 3rd Line
(COM17,COM19,COM21,COM23)
COMM4 Line and
0111 1101 7DH *
*
*
93 94 95 96 126
Both besides of 4th Line
0111 1110 7EH *
*
*
*
*
*
* 127
(COM25,COM27,COM29,COM31)
0111 1111 7FH
*
*
*
*
*
*
* 128
Notes : 1. When the Icon display function using, the system should be initialized by the software initialization
Because the MK RAM is not initialized by the power on reset and hardware.
2. The cross-points between segments (SEGM1 and SEGM2) and commons (COMM1 to COMM4 and
COM2 to COM32) are always set "OFF" level.
3. In the table 4, * mark are invalid, therefore both of "0" or "1" can be written but these are no meaning.
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