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W25B40A PDF даташит

Спецификация W25B40A изготовлена ​​​​«Winbond» и имеет функцию, называемую «4M-BIT SERIAL FLASH MEMORY».

Детали детали

Номер произв W25B40A
Описание 4M-BIT SERIAL FLASH MEMORY
Производители Winbond
логотип Winbond логотип 

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W25B40A Даташит, Описание, Даташиты
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W25B40/W25B40A
4M-BIT SERIAL FLASH MEMORY
WITH BOOT AND PARAMETER SECTORS
Formally NexFlash NX25B40
The Winbond W25B40 / W25B40A is fully compatible with the previous NexFlash NX25B40 Serial
Flash memory.
Publication Release Date: January 6, 2006
- 1 - Revision M









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W25B40A Даташит, Описание, Даташиты
W25B40/W25B40A
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 (BOTTOM BOOT) ........................................................................................ 7
6. BLOCK DIAGRAM (TOP BOOT-SPECIAL ORDER) ................................................................. 8
7. FUNCTIONAL DESCRIPTION ................................................................................................... 9
7.1 SPI OPERATIONS ......................................................................................................... 9
7.1.1 SPI Modes ........................................................................................................................9
7.1.2 Hold Function ...................................................................................................................9
7.2 WRITE PROTECTION.................................................................................................... 9
7.2.1 Write Protect Features......................................................................................................9
7.2.2 Write Protection using Power-down instruction...............................................................10
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 (BP2, BP1, BP0)................................................................................11
8.1.4 Reserved Bits .................................................................................................................11
8.1.5 Status Register Protect (SRP) ........................................................................................11
8.1.6 Write Protection Operation - Bottom Boot Sector Organization ......................................12
8.1.7 Write Protection Operation - Top Boot Sector Organization (Special Order) ..................12
8.2 INSTRUCTIONS........................................................................................................... 12
8.2.1 Manufacturer and Device Identification...........................................................................13
8.2.2 Instruction Set (1).............................................................................................................13
8.2.3 Write Disable (04h).........................................................................................................14
8.2.4 Write Enable (06h)..........................................................................................................14
8.2.5 Read Status Register (05h) ............................................................................................15
8.2.6 Write Status Register (01h) ............................................................................................16
-2-









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W25B40A Даташит, Описание, Даташиты
W25B40/W25B40A
8.2.7 Read Data (03h) .............................................................................................................17
8.2.8 Fast Read (0Bh) .............................................................................................................18
8.2.9 Page Program (02h) .......................................................................................................19
8.2.10 Sector Erase (D8h).......................................................................................................20
8.2.11 Chip Erase (C7h)..........................................................................................................21
8.2.12 Power-down (B9h) ........................................................................................................22
8.2.13 Release Power-down / Device ID (ABh) .......................................................................23
8.2.14 Read Manufacturer / Device ID (90h) ...........................................................................25
9. ELECTRICAL CHARACTERISTICS......................................................................................... 26
9.1 Absolute Maximum Ratings (1) .................................................................................... 26
9.2 Operating Ranges......................................................................................................... 26
9.3 Power-up Timing and Write Inhibit Threshold .............................................................. 27
9.4 DC Electrical Characteristics (Preliminary) (1) ............................................................. 28
9.5 AC Measurement Conditions........................................................................................ 29
9.6 AC Electrical Characteristics (Preliminary)................................................................... 30
9.7 AC Electrical Characteristics (Preliminary) cont’d ........................................................ 31
9.8 Serial Output Timing ..................................................................................................... 32
9.9 Input Timing .................................................................................................................. 32
9.10 Hold Timing................................................................................................................... 32
10. PACKAGE SPECIFICATION .................................................................................................... 33
10.1 8-Pin SOIC 150-mil (Package Code SN)...................................................................... 33
11. ORDERING INFORMATION .................................................................................................... 34
12. REVISION HISTORY ................................................................................................................ 35
Publication Release Date: January 6, 2006
- 3 - Revision M










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