W25P10, W25P20 AND W25P40

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Table of Contents-

1.

GENERAL DESCRIPTION ......................................................................................................... 4

2.

FEATURES ................................................................................................................................. 4

3.

PIN CONFIGURATION ............................................................................................................... 5

4.

PIN DESCRIPTION..................................................................................................................... 5

4.1

Package Types ............................................................................................................... 5

4.2

Chip Select (/CS) ............................................................................................................ 5

4.3

Serial Data Output (DO) ................................................................................................. 6

4.4

Write Protect (/WP) ......................................................................................................... 6

4.5

HOLD (/HOLD) ............................................................................................................... 6

4.6

Serial Clock (CLK) .......................................................................................................... 6

4.7

Serial Data Input (DI) ...................................................................................................... 6

5.

BLOCK DIAGRAM ...................................................................................................................... 7

6.

FUNCTIONAL DESCRIPTION ................................................................................................... 8

6.1

SPI OPERATIONS ......................................................................................................... 8

6.1.1

SPI Modes ........................................................................................................................8

6.1.2

Hold Function ...................................................................................................................8

6.2

WRITE PROTECTION.................................................................................................... 8

6.2.1

Write Protect Features......................................................................................................8

7.

CONTROL AND STATUS REGISTERS..................................................................................... 9

7.1

STATUS REGISTER ...................................................................................................... 9

7.1.1

BUSY................................................................................................................................9

7.1.2

Write Enable Latch (WEL) ................................................................................................9

7.1.3

Block Protect Bits (BP2, BP1, BP0)................................................................................10

7.1.4

Reserved Bits .................................................................................................................10

7.1.5

Status Register Protect (SRP) ........................................................................................10

7.1.6

Status Register Memory Protection ................................................................................11

7.2

INSTRUCTIONS........................................................................................................... 11

7.2.1

Manufacturer and Device Identification...........................................................................12

7.2.2

Instruction Set

(1).............................................................................................................12

7.2.3

Write Disable (04h).........................................................................................................13

7.2.4

Write Enable (06h)..........................................................................................................13

7.2.5

Read Status Register (05h) ............................................................................................14

7.2.6

Write Status Register (01h) ............................................................................................15

7.2.7

Read Data (03h) .............................................................................................................16

7.2.8

Fast Read (0Bh) .............................................................................................................17

7.2.9

Page Program (02h) .......................................................................................................18

7.2.10

Sector Erase (D8h) .......................................................................................................19