is93c56a Integrated Silicon Solution, Inc., is93c56a Datasheet - Page 4

• Manufacturer Part Number: is93c56a
• Description: 2k-bit/4k-bit Serial Electrically Erasable Prom
• Manufacturer: Integrated Silicon Solution, Inc.

INSTRUCTION SET - IS93C56A (2kb)
Instruction
READ
WEN
WRITE
WRALL
WDS
ERASE
ERAL (
INSTRUCTION SET - IS93C66A (4kb)
Instruction
READ
WEN
WRITE
WRALL
WDS
ERASE
ERAL (
IS93C56A
4
Notes:
1. x = Don't care bit.
2. If the number of bits clocked-in does not match the number corresponding to a selected command, all extra trailing bits are ignored,
Notes:
1. x = Don't care bit.
2. If the number of bits clocked-in does not match the number corresponding to a selected command, all extra trailing bits are ignored,
and WRITE, WRALL, ERASE, and ERAL are also ignored, but READ, WEN, WDS are accepted.
and WRITE, WRALL, ERASE, and ERAL are also ignored, but READ, WEN, WDS are accepted.
(Write Enable)
(Write Disable)
(Write Enable)
(Write Disable)
Erase All Registers)
Erase All Registers)
(Write All Registers)
(Write All Registers)
(2)
(2)
Start Bit OP Code
Start Bit OP Code
IS93C66A
1
1
1
1
1
1
1
1
1
1
1
1
1
1
10
00
01
00
00
11
00
10
00
01
00
00
11
00
Integrated Silicon Solution, Inc. — www.issi.com —
Address
Address
11xxxxxxx
01xxxxxxx
00xxxxxxx
10xxxxxxx
11xxxxxxx
01xxxxxxx
00xxxxxxx
10xxxxxxx
x(A
x(A
x(A
(A
(A
(A
8
8
8
8-bit Organization
7
7
7
-A
-A
-A
-A
-A
-A
8-bit Organization
(ORG = GND)
0
0
0
0
0
0
)
)
)
)
)
)
(ORG = GND)
(1)
(1)
Input Data
Input Data
(D
(D
(D
(D
7
7
7
7
—
—
—
—
—
—
—
—
—
—
-D
-D
-D
-D
0
0
0
0
)
)
)
)
Address
Address
11xxxxxx
01xxxxxx
00xxxxxx
10xxxxxx
11xxxxxx
00xxxxxx
10xxxxxx
01xxxxxx
x(A
x(A
x(A
(A
(A
(A
16-bit Organization
7
7
7
6
6
6
16-bit Organization
-A
-A
-A
-A
-A
-A
0
0
0
(ORG = Vcc)
(ORG = Vcc)
0
0
0
)
)
)
)
)
)
(1)
(1)
ISSI
1-800-379-4774
Input Data
Input Data
(D
(D
(D
(D
15
15
15
15
—
—
—
—
—
—
—
—
—
—
-D
-D
-D
-D
05/02/06
Rev. A
0
0
0
0
)
)
)
)
®