25LC010A データシートの表示（PDF） - Microchip Technology

部品番号

コンポーネント説明

メーカー

25LC010A

1K-4K SPI Serial EEPROM HighTemp Family Data Sheet

Microchip Technology 

25LCXXXA

3.4 Write Enable (WREN) and Write

Disable (WRDI)

The 25LCXXXA contains a write enable latch. See

Table 5-1 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

• WP pin is brought low

FIGURE 3-4:

WRITE ENABLE SEQUENCE (WREN)

CS

SCK

01234567

FIGURE 3-5:

SI

00000110

High-Impedance

SO

WRITE DISABLE SEQUENCE (WRDI)

CS

SCK

01234567

SI

0 0 0 0 0 1 10 0

High-Impedance

SO

© 2009 Microchip Technology Inc.

Preliminary

DS22136B-page 11

Share Link: