sm5221-001 SamHop Microelectronics Corp., sm5221-001 Datasheet - Page 11

• Manufacturer Part Number: sm5221-001
• Description: Keys Encoder
• Manufacturer: SamHop Microelectronics Corp.

DOUBLE KEY OPERATION
When more than two keys except K21 + K22, K21 +K23 and K21 +K24 are depressed at the
same time, the transmission output stops.
Double key operation is useful for tape deck recording operation.
Double key operation form are following.
(d) No operation
(a) Operation
(b) No operation
(c) No operation
K22 to K24
push
K21
K21
K21
三合微科股份有限公司
S
AM
K22 to K24
H
K21 + K22
K21 + K23
K21 + K24
-36 ms < t < 36 ms
OP
KEY
K22 to 24 Transmission
Microelectronics Corp.
K21 Transmission
K21 Transmission
36 ms < t < 126 ms
D
1
0
1
0
t > 126 ms
t > 126 ms
D
0
1
1
K22 to K24
1
Page 11
D
1
1
1
2
No transmission
D
0
0
0
K22 to K24
No Transmission
3
push
D
K21
1
1
1
4
D5+K22 to 24 Transmission
D
1
1
1
5
SM5221-001/002
No Transmission
D
0
0
0
6
32 KEYS ENCODER
V.2.0 Mar 8,2002
0/1
0/1
0/1
D
7