參數資料
型號: W25Q80VZPIG
廠商: WINBOND ELECTRONICS CORP
元件分類: PROM
英文描述: 1M X 8 SPI BUS SERIAL EEPROM, DSO8
封裝: 6 X 5 MM, GREEN, WSON-8
文件頁數: 29/61頁
文件大?。?/td> 1794K
代理商: W25Q80VZPIG
W25Q80, W25Q16, W25Q32
Publication Release Date: September 26, 2007
- 35 -
Preliminary - Revision B
10.2.17 32KB Block Erase (52h)
The Block Erase instruction sets all memory within a specified block (32K-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 “52h” followed a 24-bit block address (A23-A0) (see Figure 2). The
Block Erase instruction sequence is shown in figure 17.
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 tBE1 (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 (TB, BP2, BP1,
and BP0) bits (see Status Register Memory Protection table).
Figure 17. 32KB Block Erase Instruction Sequence Diagram
Note:
For W25Q16, user should not issue 32KB Block Erase (52h) instruction to the top or bottom 32KB block
when SEC bit in Status Register is set to “1”.
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