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W25X10A, W25X20A, W25X40A, W25X80A
Table of Contents
1.
2.
3.
4.
5.
6.
7.
GENERAL DESCRIPTION ......................................................................................................... 4
FEATURES ................................................................................................................................. 4
PIN CONFIGURATION SOIC 150-MIL ....................................................................................... 5
PIN CONFIGURATION SOIC 208-MIL ....................................................................................... 5
PIN CONFIGURATION PDIP 300-MIL ....................................................................................... 5
PAD CONFIGURATION WSON 6X5-MM .................................................................................. 6
PIN DESCRIPTION ..................................................................................................................... 6
7.1
7.2
7.3
7.4
7.5
7.6
7.7
Package Types ............................................................................................................... 7
Chip Select (/CS) ............................................................................................................ 7
Serial Data Output (DO) ................................................................................................. 7
Write Protect (/WP) ......................................................................................................... 7
HOLD (/HOLD) ............................................................................................................... 7
Serial Clock (CLK) .......................................................................................................... 7
Serial Data Input / Output (DIO) ..................................................................................... 7
8.
9.
BLOCK DIAGRAM ...................................................................................................................... 8
FUNCTIONAL DESCRIPTION ................................................................................................... 9
9.1
SPI OPERATIONS ......................................................................................................... 9
9.1.1
9.1.2
9.1.3
SPI Modes ........................................................................................................................9
Dual Output SPI ...............................................................................................................9
Hold Function ...................................................................................................................9
9.2
WRITE PROTECTION .................................................................................................. 10
9.2.1
Write Protect Features ....................................................................................................10
10.
CONTROL AND STATUS REGISTERS ................................................................................... 11
10.1
STATUS REGISTER .................................................................................................... 11
10.1.1
10.1.2
10.1.3
10.1.4
10.1.5
10.1.6
10.1.7
BUSY ............................................................................................................................11
Write Enable Latch (WEL) ............................................................................................11
Block Protect Bits (BP2, BP1, BP0) ..............................................................................11
Top/Bottom Block Protect (TB) .....................................................................................11
Reserved Bits ...............................................................................................................11
Status Register Protect (SRP) ......................................................................................12
Status Register Memory Protection ..............................................................................13
10.2
INSTRUCTIONS ........................................................................................................... 14
10.2.1
10.2.2
10.2.3
10.2.4
10.2.5
10.2.6
Manufacturer and Device Identification ........................................................................14
Instruction Set ..............................................................................................................15
Write Enable (06h) ........................................................................................................16
Write Disable (04h) .......................................................................................................16
Read Status Register (05h) ..........................................................................................17
Write Status Register (01h) ..........................................................................................18
-2-
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