25C320ESLASHP datasheet(9/24 Pages) MICROCHIP

Teilenummer	25C320E/P

Bauteilbeschribung	32K SPI Bus Serial EEPROM

PDF	24 Pages

Scroll/Zoom	100%

Hersteller	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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9 / 24 page

 2004 Microchip Technology Inc.

DS21227E-page 9

25AA320/25LC320/25C320

3.4

Write Enable (WREN) and Write

Disable (WRDI)

The 25XX320 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

456

High-impedance

25C320E/P Datenblatt(PDF) 9 Page - Microchip Technology