M28R400CTB120ZB1T データシートの表示（PDF） - STMicroelectronics

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M28R400CTB120ZB1T

4 Mbit (256Kb x16, Boot Block) 1.8V Supply Flash Memory

STMicroelectronics 

M28R400CT, M28R400CB

Table 3. Commands

Bus Write Operations

Commands

No. of

Cycles

1st Cycle

Bus

Op.

Addr Data

2nd Cycle

Bus

Op.

Addr

Data

3nd Cycle

Bus

Op.

Addr

Data

Read Memory Array

1+

Write X

FFh Read

Read

Addr

Data

Read Status Register

1+

Write X

70h Read

X

Status

Register

Read Electronic Signature 1+

Write X

Signature

90h Read Addr (2) Signature

Read CFI Query

1+

Write 55h 98h Read CFI Addr Query

Block Erase

2

Write

X

20h Write

Block

Addr

D0h

Chip Erase

2

Write

X

80h Write

X

D0h

Program

2

Write

X

40h or

10h

Write

Addr

Data

Input

Double Word Program(3)

3

Write X

30h Write Addr 1

Data

Input

Write

Addr 2

Data

Input

Clear Status Register

1

Write

X

50h

Program/Erase Suspend

1

Write

X

B0h

Program/Erase Resume

1

Write X D0h

Block Lock

2

Write

X

60h

Write

Block

Address

01h

Block Unlock

2

Write

X

60h

Write

Block

Address

D0h

Block Lock-Down

2

Write

X

60h

Write

Block

Address

2Fh

Protection Register

Program

2

Write X C0h Write Address

Note: 1. X = Don’t Care.

2. The signature addresses are listed in Tables 4, 5 and 6.

3. Addr 1 and Addr 2 must be consecutive Addresses differing only for A0.

Data

Input

13/50

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