Mne.

Instr.

Cyc.

1st Cyc.

2nd Cyc.

3rd Cyc.

4th Cyc.

5th Cyc.

6th Cyc.

7th Cyc.

RD

(2,4)

Read/Reset

Memory Array

1+

Addr.

(3,7)

X

Read Memory Array until a new write cycle is initiated.

Data

F0h

3+

Addr.

(3,7)

Byte

AAAAh

5555h

AAAAh

Read Memory Array until a new write cycle

is initiated.

Word

5555h

2AAAh

5555h

Data

AAh

55h

F0h

AS

(4)

Auto Select

3+

Addr.

(3,7)

Byte

AAAAh

5555h

AAAAh

Read Electronic Signature or Block

Protection Status until a new write cycle is

initiated. See Note 5 and 6.

Word

5555h

2AAAh

5555h

Data

AAh

55h

90h

PG

Program

4

Addr.

(3,7)

Byte

AAAAh

5555h

AAAAh

Program

Address

Read Data Polling or Toggle Bit

until Program completes.

Word

5555h

2AAAh

5555h

Data

AAh

55h

A0h

Program

Data

BE

Block Erase

6

Addr.

(3,7)

Byte

AAAAh

5555h

AAAAh

AAAAh

5555h

Block

Address

Additional

Block

(8 )

Word

5555h

2AAAh

5555h

5555h

2AAAh

Data

AAh

55h

80h

AAh

55h

30h

30h

CE

Chip Erase

6

Addr.

(3,7)

Byte

AAAAh

5555h

AAAAh

AAAAh

5555h

AAAAh

Note 9

Word

5555h

2AAAh

5555h

5555h

2AAAh

5555h

Data

AAh

55h

80h

AAh

55h

10h

ES

(10)

Erase

Suspend

1

Addr.

(3,7)

X

Read until Toggle stops, then read all the data needed from any

Block(s) not being erased then Resume Erase.

Data

B0h

ER

Erase

Resume

1

Addr.

(3,7)

X

Read Data Polling or Toggle Bits until Erase completes or Erase is

suspended another time

Data

30h

Notes: 1. Commands not interpreted in this table will default to read array mode.

before starting any new operation (see Table 14 and Figure 9).

3. X = Don’t Care.

4. The first cycles of the RD or AS instructions are followed by read operations. Any number of read cycles can occur after

the command cycles.

Device code.

7. For Coded cycles address inputs A15-A17 are don’t care.

8. Optional, additional Blocks addresses must be entered within the erase timeout delay after last write entry,

timeout status can be verified through DQ3 value (see Erase Timer Bit DQ3 description).

When full command is entered, read Data Polling or Toggle bit until Erase is completed or suspended.

9. Read Data Polling, Toggle bits or RB until Erase completes.

10.During Erase Suspend, Read and Data Program functions are allowed in blocks not being erased.

10/34

M29F400T, M29F400B