NJU6538 View Datasheet(PDF) - Japan Radio Corporation
Part Name
Description
Manufacturer
NJU6538 Datasheet PDF : 27 Pages
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NJU6538
(2-1) Instruction discription
(a) Display ON / OFF
This instruction selects display turn-on or turn-off regardless of the contents of the DDRAM.
A0 D7 D6 D5 D4 D3 D2 D1 D0
0 1 0 1 0 1 1 1D
D 0: Display OFF
1: Display ON
(b) Page address set
In order to access to the DDRAM for writing or reading display data, both “page address set” and
“column address set” instructions are required before accessing.
The page address “0” should be used for icon display because the only D0 to D6 is valid.
The page address “1” should be used for icon display because the only D0 to D2 is valid.
A0 D7 D6 D5 D4 D3 D2 D1 D0
0
1
0
1
1
0
0
0
A0
A0
Page
0
0
1
1
(c) Column address set
As above-mentioned, in order to access to the DDRAM for writing or reading display data, it is
necessary to execute both “page address set” and “column address set” before accessing. The
8-bit column address data will be valid when both upper 3-bit and lower 4-bit data are set into the
column address register.
Once the column address is set, it will automatically increment (+1) whenever the DDRAM will be
accessed, so that the DDRAM will be able to be continuously accessed without “column address
set” instruction.
The column address will stop increment and the page address will not be changed when the last
address (40)H is addressed.
A0 D7 D6 D5 D4 D3 D2 D1 D0
0
0
0
0
1
* A6 A5 A4 Upper 4-bit
0
0
0
0
0 A3 A2 A1 A0 Lower 4-bit
A6 A5 A4 A3 A2 A1 A0
0000000
0000001
:
:
:
:
:
:
:
:
:
:
:
:
:
:
1000000
Column address (HEX)
00
01
:
:
40
Ver.2003-05-09
-7-
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