CMOS SERIAL E
2
PROM
S-93A46A/56A/66A
2. S-93A56A
Table 3
Instruction
SK input clock
READ (Read data)
WRITE (Write data)
ERASE (Erase data)
WRAL (Write all)
ERAL (Erase all)
EWEN (Write enable)
EWDS (Write disable)
Start Bit
1
1
1
1
1
1
1
1
Operation Code
2
1
0
1
0
0
0
0
3
0
1
1
0
0
0
0
4
x
x
x
0
1
1
0
5
A6
A6
A6
1
0
1
0
6
A5
A5
A5
x
x
x
x
Address
7
A4
A4
A4
x
x
x
x
8
9
10
11
Rev.2.1
_00
Data
12 to 27
D15 to D0 output
*1
D15 to D0 input
D15 to D0 input
A3 A2
A3 A2
A3 A2
x
x
x
x
x
x
x
x
A1 A0
A1 A0
A1 A0
x
x
x
x
x
x
x
x
*1.
When the 16-bit data in the specified address has been output, the data in the next address is output.
Remark
x: Doesn’t matter
3. S-93A66A
Table 4
Instruction
SK input clock
READ (Read data)
WRITE (Write data)
ERASE (Erase data)
WRAL (Write all)
ERAL (Erase all)
EWEN (Write enable)
EWDS (Write disable)
Start Bit
1
1
1
1
1
1
1
1
Operation Code
2
1
0
1
0
0
0
0
3
0
1
1
0
0
0
0
4
A7
A7
A7
0
1
1
0
5
A6
A6
A6
1
0
1
0
6
A5
A5
A5
x
x
x
x
Address
7
A4
A4
A4
x
x
x
x
8
9
10
11
Data
12 to 27
D15 to D0 output
*1
D15 to D0 input
D15 to D0 input
A3 A2
A3 A2
A3 A2
x
x
x
x
x
x
x
x
A1 A0
A1 A0
A1 A0
x
x
x
x
x
x
x
x
*1.
When the 16-bit data in the specified address has been output, the data in the next address is output.
Remark
x: Doesn’t matter
4
Seiko Instruments Inc.
SII [ SEIKO INSTRUMENTS INC ]
