NJU6010 Просмотр технического описания (PDF) - Japan Radio Corporation
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NJU6010 Datasheet PDF : 13 Pages
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NJU6010 Preliminary
(2-4) The Relation Between Key Matrix and Key Data
The relation between key matrix and key data is shown in Fig. 6.
NJU6010
K5 K4 K3 K2 K1 K0
S3 S2 S1 S0
ON
OFF
SW KEY
K0 K1 K2 K3 K4 K5
S0 KD1 KD2 KD3 KD4 KD5 KD6
S1 KD7 KD8 KD9 KD10 KD11 KD12
S2 KD13 KD14 KD15 KD16 KD17 KD18
S3 KD19 KD20 KD21 KD22 KD23 KD24
Fig. 6 Relation Between Key Matrix and Key Data
(2-5) The Relation Between Key Matrix and Key Data
No-pressed key data may change pressed key data in triple or more key input as shown in Fig. 7, and
incorrect key data may be output to external CPU. For prevention of miss-recognition by incorrect key
data, diodes should be inserted in front of keys as shown in Fig. 8 or control program of CPU should
ignore the combination of key data miss-recognition.
In case of the key input as shown in Fig. 9, the recognition of multiple key inputs is realized without a
diode.
NJUU66504110
KK65 KK54 KK43 KK32 KK21 KK10 S5 S43 S32 S21 S10
Pressed key
In case of 3 keys operation in left
picture, if S3 terminal outputs "L" signal,
this signal goes around on the dotted
line and no-pressed key is
miss-recognized as pressed key.
Miss-recognized key
SW KEY
Fig. 7 Multiple Key Inputs
-6-
Ver.2009-08-20
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