This Data Sheet may be revised by subsequent versions

©2004 Eon Silicon Solution, Inc., www.essi.com.tw

or modifications due to changes in technical specifications.

10

EN25B80

Rev. C, Issue Date: 2006/12/25

Table 4. Instruction Set

Instruction Name

Byte 1

Code

Byte 2

Byte 3

Byte 4

Byte 5

Byte 6

n-Bytes

Write Enable

06h

Write Disable

04h

Read Status

Register

05h

(S7-S0)(1)

continuous

(2)

Write Status

Register

01h

S7-S0

Read Data

03h

A23-A16

A15-A8

A7-A0

(D7-D0)

(Next byte)

continuous

Fast Read

0Bh

A23-A16

A15-A8

A7-A0

dummy

(D7-D0)

(Next Byte)

continuous

Page Program

02h

A23-A16

A15-A8

A7-A0

D7-D0

(Next byte)

continuous

Sector Erase

D8h

A23-A16

A15-A8

A7-A0

Bulk Erase

C7h

Deep Power-down

B9h

Release from Deep

Power-down, and

read Device ID

dummy

dummy

dummy

(ID7-ID0)

(4)

Release from Deep

Power-down

ABh

Manufacturer/

Device ID

90h

dummy

dummy

00h(5)

(M7-M0)

(ID7-ID0)

Read Identification

9Fh

(M7-M0)

(ID15-ID8)

(ID7-ID0)

Notes:

1. Data bytes are shifted with Most Significant Bit first. Byte fields with data in parenthesis “( )” 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

OP Code

(M7-M0)

(ID15-ID0)

(ID7-ID0)

ABh

33h

90h

1Ch

33h

EN25B80(Bottom Boot)

9Fh

1Ch

2014h

ABh

43h

90h

1Ch

43h

EN25B80T(Top Boot)

9Fh

1Ch

2014h