F25L004A-100PG 데이터 시트보기 (PDF) - [Elite Semiconductor Memory Technology Inc.

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F25L004A-100PG

3V Only 4 Mbit Serial Flash Memory

[Elite Semiconductor Memory Technology Inc. 

ESMT

F25L004A

4K-Byte-Sector-Erase

The Sector-Erase instruction clears all bits in the selected sector

to FFH. A Sector-Erase instruction applied to a protected

memory area will be ignored. Prior to any Write operation, the

Write-Enable (WREN) instruction must be executed. CE must

remain active low for the duration of the any command sequence.

The Sector-Erase instruction is initiated by executing an 8-bit

command, 20H, followed by address bits [A23-A0]. Address bits

[AMS-A12] (AMS = Most Significant address) are used to determine

the sector address (SAX), remaining address bits can be VIL or

VIH. CE must be driven high before the instruction is executed.

The user may poll the Busy bit in the software status register or

wait TSE for the completion of the internal self-timed

Sector-Erase cycle. See Figure 10 for the Sector-Erase

sequence.

CE

MODE3

SCK MODE0

012345678

15 16 23 24

31

SI

20

ADD.

ADD.

ADD.

MSB

MSB

HIGH IMPENANCE

SO

FIGURE 10 : SECTOR-ERASE SEQUENCE

Elite Semiconductor Memory Technology Inc.

Publication Date: Jan. 2009

Revision: 1.6

14/30

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