M28W320 데이터 시트보기 (PDF) - STMicroelectronics

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M28W320

32 Mbit (2Mb x16, Boot Block) 3V Supply Flash Memory

STMicroelectronics 

Command interface

M28W320FCT, M28W320FCB

Table 4. Commands(1)(2)

Bus Write Operations

Commands

1st Cycle

2nd Cycle

3rd Cycle

4th Cycle

5th Cycle

Op Add Data Op Add Data Op Add Data Op Add Data Op Add Data

Read Memory

Array

1+ Write X

Read Status

Register

1+ Write X

Read Electronic

Signature

1+ Write

X

FFh Read RA RD

70h Read X SRD

90h

Read

SA

(3)

IDh

Read CFI Query 1+ Write X

Erase

2 Write X

Program

2 Write X

Double Word

Program(4)

Quadruple Word

Program(5)

Clear Status

Register

3 Write X

5 Write X

1 Write X

98h Read QA QD

20h Write BA D0h

40h

or Write PA PD

10h

30h Write PA1 PD1 Write PA2 PD2

56h

(6)

Write PA1

PD1 Write

PA2 PD2 Write

PA3 PD3 Write

PA4 PD4

50h

Program/Erase

Suspend

1 Write X

Program/Erase

Resume

1 Write X

Block Lock

2 Write X

Block Unlock

2 Write X

Block Lock-Down 2 Write X

Protection

Register Program

2

Write

X

B0h

D0h

60h Write BA 01h

60h Write BA D0h

60h Write BA 2Fh

C0h Write PRA PRD

1. X = Don't Care, RA=Read Address, RD=Read Data, SRD=Status Register Data, ID=Identifier (Manufacture and Device

Code), QA=Query Address, QD=Query Data, BA=Block Address, PA=Program Address, PD=Program Data,

PRA=Protection Register Address, PRD=Protection Register Data.

2. 55h is reserved.

3. The signature addresses are listed in Table 5, Table 6 and Table 7.

4. Program Addresses 1 and 2 must be consecutive Addresses differing only for A0.

5. Program Addresses 1,2,3 and 4 must be consecutive Addresses differing only for A0 and A1.

6. To be characterized.

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