SM5221-001/002
32 KEYS ENCODER
SAMHOP Microelectronics Corp.
CUSTOMER CODE ROM FORMAT
This LSI has customer code table ROM on the chip. So user can generate customer
codes without external parts.
The customer code ROM format is following.
C
0
7
C
0
6
C
0
5
C
0
4
C
0
3
C
0
2
C
0
1
C0
0
Ver.1 or 2 SEL
ROM 1
ROM
PULL
SEL
UP
1/0
1/0
1/0
1/0
1/0
1/0
1/0
1/0
1/0
1/0
1/0
1/0
1/0
1/0
1/0
1/0
1/0
1/0
1/0
1/0
1/0
1/0
1/0
1/0
1/0
1/0
1/0
1/0
1/0
1/0
1/0
1/0
1/0
1/0
0
0
0
0
1/0
0
0
0
0
1/0
0
0
0
0
ROM 2
0
K/IO
NO
NO
YES
YES
6
K/IO
NO
YES
NO
YES
7
1
ROM 3
2
3
1) Ver. 1 or Ver. 2 selection ..... Ver. 1 = 01H, Ver. 2 = 02H
2) When a user selects Ver. 1, ROM1 is available for the customer code (C7 to C0) election.
3) ROM2 is available for the customer code' (C7' to C0') selection.
4) When a user selects Ver. 2, ROM3 is available for the customer code (C7 to C3)
selection. And a user can select ROM3-0, ROM3-1, ROM3-2 or ROM3-3 by the KI/O6
and KI/O7 pull up resistances.
Page 12
V.2.0 Mar 8,2002
SAMHOP [ SAMHOP MICROELECTRONICS CORP. ]
