参数资料
型号: W25Q64DWSFIG
厂商: Winbond Electronics
文件页数: 47/82页
文件大小: 0K
描述: IC FLASH SPI 64MBIT 16SOIC
标准包装: 44
系列: SpiFlash®
格式 - 存储器: 闪存
存储器类型: FLASH
存储容量: 64M(8M x 8)
速度: 104MHz
接口: SPI 串行
电源电压: 1.7 V ~ 1.95 V
工作温度: -40°C ~ 85°C
封装/外壳: 16-SOIC(0.295",7.50mm 宽)
供应商设备封装: 16-SOIC
包装: 管件
W25Q64DW
10.2.24 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 t BE (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
Mode 3
0
1
2
3
4
5
6
7
8
9
29
30
31
Mode 3
CLK
Mode 0
Instruction (D8h)
24-Bit Address
Mode 0
DI
(IO 0 )
DO
High Impedance
23
*
22
2
1
0
(IO 1 )
* = MSB
/CS
Figure 23a. 64KB Block Erase Instruction (SPI Mode)
Mode 3
0
1
2
3
4
5
6
7
Mode 3
CLK
Mode 0
Mode 0
In structio n
D8h
A23-16
A15-8
A7-0
IO 0
IO 1
IO 2
IO 3
20
21
22
23
16
17
18
19
12
13
14
15
8
9
10
11
4
5
6
7
0
1
2
3
Figure 23b. 64KB Block Erase Instruction (QPI Mode)
Publication Release Date: September 18, 2012
- 47 -
Revision D
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