25LC080 datasheet(9/22 Pages) MICROCHIP

部件名	25LC080

功能描述	8K SPI Bus Serial EEPROM

PDF	22 Pages

Scroll/Zoom	100%

制造商	MICROCHIP [Microchip Technology]

网页	http://www.microchip.com

标志

9 / 22 page

 1997-2012 Microchip Technology Inc.

DS21230E-page 9

25AA080/25LC080/25C080

3.4

Write Enable (WREN) and Write

Disable (WRDI)

The 25XX080 contains a write enable latch.

See

Table 3-3 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

FIGURE 3-4:

WRITE ENABLE SEQUENCE

FIGURE 3-5:

WRITE DISABLE SEQUENCE

SCK

High-impedance

SCK

2345

High-impedance

25LC080 数据表(PDF) 9 Page - Microchip Technology