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W25Q64FVSFIQ View Datasheet(PDF) - Winbond

Part NameW25Q64FVSFIQ Winbond
Winbond Winbond
Description3V 64M-BIT SERIAL FLASH MEMORY WITH DUAL/QUAD SPI & QPI
W25Q64FVSFIQ Datasheet PDF : 89 Pages
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W25Q64FV
6.2.24 64KB Block Erase (D8h)
The Block Erase instruction sets all memory within a specified block (64K-bytes) to the erased state of all
1s (FFh). A Write Enable instruction must be executed before the device will accept the Block Erase
Instruction (Status Register bit WEL must equal 1). The instruction is initiated by driving the /CS pin low
and shifting the instruction code “D8h” followed a 24-bit block address (A23-A0). The Block Erase
instruction sequence is shown in Figure 23a & 23b.
The /CS pin must be driven high after the eighth bit of the last byte has been latched. If this is not done
the Block Erase instruction will not be executed. After /CS is driven high, the self-timed Block Erase
instruction will commence for a time duration of tBE (See AC Characteristics). While the Block Erase cycle
is in progress, the Read Status Register instruction may still be accessed for checking the status of the
BUSY bit. The BUSY bit is a 1 during the Block Erase cycle and becomes a 0 when the cycle is finished
and the device is ready to accept other instructions again. After the Block Erase cycle has finished the
Write Enable Latch (WEL) bit in the Status Register is cleared to 0. The Block Erase instruction will not be
executed if the addressed page is protected by the Block Protect (CMP, SEC, TB, BP2, BP1, and BP0)
bits (see Status Register Memory Protection table).
/CS
CLK
DI
(IO0)
DO
(IO1)
Mode 3
0
Mode 0
* = MSB
123456789
29 30 31
Instruction (D8h)
24-Bit Address
23 22
*
High Impedance
210
Mode 3
Mode 0
Figure 23a. 64KB Block Erase Instruction (SPI Mode)
/CS
CLK
IO0
Mode 3
Mode 0
01234567
Instruction
D8h
A23-16
20 16
A15-8
12 8
A7-0
40
Mode 3
Mode 0
IO1
21 17 13 9 5 1
IO2
22 18 14 10 6 2
IO3
23 19 15 11 7 3
Figure 23b. 64KB Block Erase Instruction (QPI Mode)
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Publication Release Date: October 07, 2013
Revision L
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GENERAL DESCRIPTION
The W25Q64FV (64M-bit) Serial Flash memory provides a storage solution for systems with limited space, pins and power. The 25Q series offers flexibility and performance well beyond ordinary Serial Flash devices. They are ideal for code shadowing to RAM, executing code directly from Dual/Quad SPI (XIP) and storing voice, text and data. The device operates on a single 2.7V to 3.6V power supply with current consumption as low as 4mA active and 1µA for power-down. All devices are offered in space saving packages.

 

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