IS93C56A Datasheet, PDF (4/16 Pages) Integrated Silicon Solution, Inc – 2K-BIT/4K-BIT SERIAL ELECTRICALLY ERASABLE PROM

IS93C56A
IS93C66A
ISSI ^®
INSTRUCTION SET - IS93C56A (2kb)
Instruction⁽²⁾
Start Bit OP Code
READ
1
10
WEN (Write Enable)
1
00
WRITE
1
01
WRALL (Write All Registers) 1
00
WDS (Write Disable)
1
00
ERASE
1
11
ERAL (Erase All Registers) 1
00
8-bit Organization
(ORG = GND)
Address ⁽¹⁾ Input Data
x(A7-A0)
—
11xxxxxxx
—
x(A7-A0)
(D7-D0)
01xxxxxxx (D7-D0)
00xxxxxxx
—
x(A7-A0)
—
10xxxxxxx
—
16-bit Organization
(ORG = Vcc)
Address ⁽¹⁾ Input Data
x(A6-A0)
—
11xxxxxx
—
x(A6-A0)
(D15-D0)
01xxxxxx
(D15-D0)
00xxxxxx
—
x(A6-A0)
—
10xxxxxx
—
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.
INSTRUCTION SET - IS93C66A (4kb)
Instruction⁽²⁾
Start Bit OP Code
READ
1
10
WEN (Write Enable)
1
00
WRITE
1
01
WRALL (Write All Registers) 1
00
WDS (Write Disable)
1
00
ERASE
1
11
ERAL (Erase All Registers) 1
00
8-bit Organization
(ORG = GND)
Address ⁽¹⁾ Input Data
(A8-A0)
—
11xxxxxxx
—
(A8-A0)
(D7-D0)
01xxxxxxx (D7-D0)
00xxxxxxx
—
(A8-A0)
—
10xxxxxxx
—
16-bit Organization
(ORG = Vcc)
Address ⁽¹⁾ Input Data
(A7-A0)
—
11xxxxxx
—
(A7-A0)
(D15-D0)
01xxxxxx
(D15-D0)
00xxxxxx
—
(A7-A0)
—
10xxxxxx
—
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.
4
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. A
05/02/06