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W25B40A の電気的特性と機能

W25B40AのメーカーはWinbondです、この部品の機能は「4M-BIT SERIAL FLASH MEMORY」です。


製品の詳細 ( Datasheet PDF )

部品番号 W25B40A
部品説明 4M-BIT SERIAL FLASH MEMORY
メーカ Winbond
ロゴ Winbond ロゴ 




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W25B40A Datasheet, W25B40A PDF,ピン配置, 機能
www.DataSheet4U.com
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

1 Page





W25B40A pdf, ピン配列
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


3Pages


W25B40A 電子部品, 半導体
W25B40/W25B40A
4.3 Serial Data Output (DO)
The SPI Serial Data Output (DO) pin provides a means for data and status to be serially read from
(shifted out of) the device. Data is shifted out on the falling edge of the Serial Clock (CLK) input pin.
4.4 Write Protect (/WP)
The Write Protect (/WP) pin can be used to prevent the Status Register from being written. Used in
conjunction with the Status Register’s Block Protect (BP2, BP1 and BP0) bits and Status Register
Protect (SRP) bits, a portion or the entire memory array can be hardware protected. The /WP pin is
active low.
4.5 Hold (/HOLD)
The /HOLD pin allows the device to be paused while it is actively selected. When /HOLD is brought
low, while /CS is low, the DO pin will be at high impedance and signals on the DI and CLK pins will be
ignored (don’t care). When /HOLD is brought high, device operation can resume. The /HOLD function
can be useful when multiple devices are sharing the same SPI signals. (“See Hold function”)
4.6 Serial Clock (CLK)
The SPI Serial Clock Input (CLK) pin provides the timing for serial input and output operations. ("See
SPI "Operations")
4.7 Serial Data Input (DI)
The SPI Serial Data Input (DI) pin provides a means for instructions, addresses and data to be serially
written to (shifted into) the device. Data is latched on the rising edge of the Serial Clock (CLK) input
pin.
-6-

6 Page



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共有リンク

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部品番号部品説明メーカ
W25B40

4M-BIT SERIAL FLASH MEMORY

Winbond
Winbond
W25B40A

4M-BIT SERIAL FLASH MEMORY

Winbond
Winbond


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