CM2915 Datasheet, PDF (14/19 Pages) Ceramate Technical – LCD Driver (19x4) with Key Scan (4x8)

CM2915
LCD Driver (19*4) with Key Scan (4*8)
A. Two or more keys are depressed ( except K16+K26 & K16+K36 & K16+K46 )
K16
input
Kmn
input
DOUT
K16
input
Kmn
input
DOUT
Kmn
input
K16
input
DOUT
Kmn
input
K16
input
DOUT
K16 Enables
Kmn Enables
36ms < t < 126 ms
36 ms
36 ms
K16 code transmission
108 ms ( min. )
(A)
K16 Enables
Kmn Enables
t < 36 ms
The transmission is disabled.
(B)
Kmn Enables
K16 Enables
36ms < t < 126 ms
36 ms
36 ms
Kmn code transmission
108 ms ( min. )
(C)
Kmn Enables
K16 Enables
t < 36 ms
The transmission is disabled.
(D)
Page 8/10
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
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Rev 1.0 Aug.1, 2003