25LC1024-ESLASHMF datasheet(10/34 Pages) MICROCHIP

tên linh kiện	25LC1024-E/MF

Giải thích chi tiết về linh kiện	1 Mbit SPI Bus Serial EEPROM

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25LC1024

DS22064D-page 10

 2010 Microchip Technology Inc.

2.3

Write Enable (WREN) and Write

Disable (WRDI)

The 25LC1024 contains a write enable latch. See

Table 2-4 for the Write-Protect Functionality Matrix.

This latch must be set before any write operation will be

completed internally. The WREN instruction will set the

latch, and the WRDI will reset the latch.

The following is a list of conditions under which the

write enable latch will be reset:

• Power-up

• WRDI instruction successfully executed

• WRSR instruction successfully executed

• WRITE instruction successfully executed

• PE instruction successfully executed

• SE instruction successfully executed

• CE instruction successfully executed

FIGURE 2-4:

WRITE ENABLE SEQUENCE (WREN)

FIGURE 2-5:

WRITE DISABLE SEQUENCE (WRDI)

SCK

High-Impedance

SCK

2345

High-Impedance

25LC1024-E/MF bảng dữ liệu(PDF) 10 Page - Microchip Technology