5

AT25512

5165A–SEEPR–1/07

WRITE PROTECT: The write protect pin (WP) will allow normal read/write operations

when held high. When the WP pin is brought low and WPEN bit is “1”, all write opera-

tions to the status register are inhibited. WP going low while CS is still low will interrupt a

write to the status register. If the internal write cycle has already been initiated, WP

going low will have no effect on any write operation to the status register. The WP pin

function is blocked when the WPEN bit in the status register is “0”. This will allow the

user to install the AT25512 in a system with the WP pin tied to ground and still be able to

write to the status register. All WP pin functions are enabled when the WPEN bit is set to

“1”.

Figure 2. SPI Serial Interface

AT25512