EN25B20 Datasheet, PDF(9/32 Page) Eon Silicon Solution Inc. – 2 Mbit Serial Flash Memory with Boot and Parameter Sectors

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EN25B20 Datasheet, PDF (9/32 Pages) Eon Silicon Solution Inc. – 2 Mbit Serial Flash Memory with Boot and Parameter Sectors

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Table 4. Instruction Set

EN25B20

Instruction Name

Write Enable

Write Disable

Read Status

Write Status

Read Data

Fast Read

Page Program

Sector Erase

Bulk Erase

Deep Power-down

Release from Deep

Power-down, and

read Device ID

Release from Deep

Power-down

Manufacturer/

Device ID

Read Identification

Byte 1

Code

06h

04h

05h

01h

03h

0Bh

02h

D8h

C7h

B9h

ABh

90h

9Fh

Byte 2

Byte 3

Byte 4 Byte 5 Byte 6

n-Bytes

(S7-S0)(1)

S7-S0

A23-A16

A15-A8

continuous

(2)

A7-A0

(D7-D0)

dummy

D7-D0

(Next byte)

(D7-D0)

(Next byte)

continuous

(Next Byte)

continuous

(4)

dummy

dummy dummy (ID7-ID0)

dummy

dummy 00h

(M7-M0) (ID7-ID0)

(5)

(M7-M0) (ID15-ID8) (ID7-ID0)

Notes:

1. Data bytes are shifted with Most Significant Bit first. Byte fields with data in parenthesis â( )â indicate data being read from

the device on the DO pin.

2. The Status Register contents will repeat continuously until CS# terminate the instruction.

3. All sectors may use any address within the sector.

4. The Device ID will repeat continuously until CS# terminate the instruction.

5. The Manufacturer ID and Device ID bytes will repeat continuously until CS# terminate the instruction.

00h on Byte 4 starts with MID and alternate with DID, 01h on Byte 4 starts with DID and alternate with MID.

Table 5. Manufacturer and Device Identification

Boot Type

EN25B20(Bottom Boot)

EN25B20T(Top Boot)

OP Code

ABh

90h

9Fh

ABh

90h

9Fh

(M7-M0)

1Ch

(ID15-ID0) (ID7-ID0)

31h

2012h

41h

2012h

This Data Sheet may be revised by subsequent versions

or modifications due to changes in technical specifications.

Rev. C, Issue Date: 2006/12/26

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