CMOS SERIAL E
2
PROM
S-93C46B/56B/66B
Instruction Sets
1. S-93C46B
Table 6
Instruction
SK input clock
READ (Read data)
WRITE (Write data)
ERASE (Erase data)
WRAL (Write all)
ERAL (Erase all)
EWEN (Write enable)
Start Bit
1
1
1
1
1
1
1
Operation
Code
2
3
1
0
1
0
0
0
0
1
1
0
0
0
Address
4
A5
A5
A5
0
1
1
5
A4
A4
A4
1
0
1
6
A3
A3
A3
x
x
x
7
A2
A2
A2
x
x
x
8
A1
A1
A1
x
x
x
9
A0
A0
A0
x
x
x
Rev.4.3
_00
Data
10 to 25
D15 to D0 Output
*1
D15 to D0 Input
D15 to D0 Input
EWDS (Write disable)
0
x
x
x
x
1
0
0
0
*1.
When the 16-bit data in the specified address has been output, the data in the next address is output.
Remark
x: Don’t care
2. S-93C56B
Table 7
Instruction
SK input clock
READ (Read data)
WRITE (Write data)
ERASE (Erase data)
WRAL (Write all)
ERAL (Erase all)
EWEN (Write enable)
Start Bit
1
1
1
1
1
1
1
Operation
Code
2
3
4
x
1
0
x
0
1
x
1
1
0
0
0
0
0
0
0
1
1
Address
5
6
7
8
9 10 11
A6 A5 A4 A3 A2 A1 A0
A6 A5 A4 A3 A2 A1 A0
A6 A5 A4 A3 A2 A1 A0
1
0
1
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Data
12 to 27
D15 to D0 Output
*1
D15 to D0 Input
D15 to D0 Input
x
x
x
x
x
x
EWDS (Write disable)
1
0
0
0
0
*1.
When the 16-bit data in the specified address has been output, the data in the next address is output.
Remark
x: Don’t care
6
Seiko Instruments Inc.
SII [ SEIKO INSTRUMENTS INC ]
