IS93C56A(2006) View Datasheet(PDF) - Integrated Silicon Solution

Part Name

Description

Manufacturer

IS93C56A
(Rev.:2006)

2K-BIT/4K-BIT SERIAL ELECTRICALLY ERASABLE PROM

Integrated Silicon Solution 

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

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