W25X20CL

Publication Release Date: August 06, 2015

- 2 -

Revision F

Table of Contents

1.

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

2.

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

3.

PIN CONFIGURATION SOIC 150-MIL, VSOP 150-MIL ............................................................ 5

4.

PAD CONFIGURATION WSON 6X5-MM AND USON 2X3-MM................................................ 5

5.

PIN DESCRIPTION SOIC\VSOP 150-MIL, WSON 6X5-MM AND USON 2X3-MM................... 5

5.1

Package Types ............................................................................................................... 6

5.2

Chip Select (/CS) ............................................................................................................ 6

5.3

Serial Data Input, Output and IOs (DI, DO, IO0 and IO1) .............................................. 6

5.4

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

5.5

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

5.6

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

6.

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

7.

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

7.1

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

7.1.1

Standard SPI Instructions .................................................................................................8

7.1.2

Dual SPI Instructions ........................................................................................................8

7.1.3

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

7.2

WRITE PROTECTION.................................................................................................... 9

7.2.1

Write Protect Features ......................................................................................................9

8.

CONTROL AND STATUS REGISTERS................................................................................... 10

8.1

STATUS REGISTER .................................................................................................... 10

8.1.1

BUSY ..............................................................................................................................10

8.1.2

Write Enable Latch (WEL) ..............................................................................................10

8.1.3

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

8.1.4

Top/Bottom Block Protect (TB) .......................................................................................10

8.1.5

Reserved Bits .................................................................................................................11

8.1.6

Status Register Protect (SRP) ........................................................................................11

8.1.7

Status Register Memory Protection ................................................................................12

8.2

INSTRUCTIONS ........................................................................................................... 13

8.2.1

Manufacturer and Device Identification...........................................................................13

8.2.2

Instruction Set (1) .............................................................................................................14

8.2.3

Write Enable (06h) ..........................................................................................................15

8.2.4

Write Enable for Volatile Status Register (50h)...............................................................15

8.2.5

Write Disable (04h) .........................................................................................................16

8.2.6

Read Status Register (05h) ............................................................................................16

8.2.7

Write Status Register (01h).............................................................................................17

8.2.8

Read Data (03h) .............................................................................................................18

8.2.9

Fast Read (0Bh)..............................................................................................................19

8.2.10

Fast Read Dual Output (3Bh) .......................................................................................20

8.2.11

Fast Read Dual I/O (BBh) .............................................................................................21

8.2.12

Continuous Read Mode Bits (M7-0)..............................................................................23

8.2.13

Continuous Read Mode Reset (FFFFh)........................................................................23