参数资料
型号: W25Q16BVZPIG
厂商: Winbond Electronics
文件页数: 23/68页
文件大小: 0K
描述: IC SPI FLASH 16MBIT 8WSON
标准包装: 100
系列: SpiFlash®
格式 - 存储器: 闪存
存储器类型: FLASH
存储容量: 16M(2M x 8)
速度: 104MHz
接口: SPI 串行
电源电压: 2.7 V ~ 3.6 V
工作温度: -40°C ~ 85°C
封装/外壳: 8-WDFN 裸露焊盘
供应商设备封装: 8-WSON(6x5)
包装: 管件
W25Q16BV
11.2.8 Write Status Register (01h)
The Write Status Register instruction allows the Status Register to be written. A Write Enable instruction
must previously have been executed for the device to accept the Write Status Register Instruction (Status
Register bit WEL must equal 1). Once write enabled, the instruction is entered by driving /CS low,
sending the instruction code “01h”, and then writing the status register data byte as illustrated in figure 7.
The Status Register bits are shown in figure 3 and described earlier in this datasheet.
Only non-volatile Status Register bits SRP0, SEC, TB, BP2, BP1, BP0 (bits 7, 5, 4, 3, 2 of Status
Register-1) and QE, SRP1(bits 9 and 8 of Status Register-2) can be written to. All other Status Register
bit locations are read-only and will not be affected by the Write Status Register instruction.
The /CS pin must be driven high after the eighth or sixteenth bit of data that is clocked in. If this is not
done the Write Status Register instruction will not be executed. If /CS is driven high after the eighth clock
(compatible with the 25X series) the QE and SRP1 bits will be cleared to 0. After /CS is driven high, the
self-timed Write Status Register cycle will commence for a time duration of t W (See AC Characteristics).
While the Write Status Register cycle is in progress, the Read Status Register instruction may still be
accessed to check the status of the BUSY bit. The BUSY bit is a 1 during the Write Status Register cycle
and a 0 when the cycle is finished and ready to accept other instructions again. After the Write Register
cycle has finished the Write Enable Latch (WEL) bit in the Status Register will be cleared to 0.
The Write Status Register instruction allows the Block Protect bits (SEC, TB, BP2, BP1 and BP0) to be
set for protecting all, a portion, or none of the memory from erase and program instructions. Protected
areas become read-only (see Status Register Memory Protection table and description). The Write Status
Register instruction also allows the Status Register Protect bits (SRP0, SRP1) to be set. Those bits are
used in conjunction with the Write Protect (/WP) pin, Lock out or OTP features to disable writes to the
status register. Please refer to 11.1.6 for detailed descriptions regarding Status Register protection
methods. Factory default for all status Register bits are 0.
Figure 7. Write Status Register Instruction Sequence Diagram
Publication Release Date: July 08, 2010
- 23 -
Revision F
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