2

8535F–SEEPR–6/10

Atmel AT25320B/640B

Block write protection is enabled by programming the status register with one of four blocks of write protection.

Separate program enable and program disable instructions are provided for additional data protection. Hardware

data protection is provided via the WP pin to protect against inadvertent write attempts to the status register. The

HOLD pin may be used to suspend any serial communication without resetting the serial sequence.

1.

Absolute Maximum Ratings*

Figure 1-1.

Block Diagram

Operating Temperature ............................–55

C to +125C

*NOTICE:

Stresses beyond those listed under “Abso-

lute Maximum Ratings” may cause perma-

nent damage to the device. This is a stress

rating only and functional operation of the

device at these or any other conditions

beyond those indicated in the operational

sections of this specification is not implied.

Exposure to absolute maximum rating con-

ditions for extended periods may affect

device reliability.

Storage Temperature ...............................–65

C to +150C

Voltage on Any Pin

with Respect to Ground.............................. –1.0V to +7.0V

Maximum Operating Voltage.................................... 6.25V

DC Output Current ................................................. 5.0 mA