AT25HP256/512

2

addition, the entire family is available in 5.0V (4.5V to

5.5V), 2.7V (2.7V to 5.5V), and 1.8V (1.8V to 3.6V) ver-

sions.

The AT25HP256/512 is enabled through the Chip Select

pin (CS) and accessed via a 3-wire interface consisting of

Serial Data Input (SI), Serial Data Output (SO), and Serial

Clock (SCK). All programming cycles are completely self-

timed, and no separate ERASE cycle is required before

WRITE.

BLOCK WRITE protection is enabled by programming the

status register with top ¼, top ½ or entire array of write pro-

tection. Separate program enable and program disable

instructions are provided for additional data protection.

Hardware data protection is provided via the WP pin to pro-

tect against inadvertent write attempts to the status regis-

ter. The HOLD pin may be used to suspend any serial

communication without resetting the serial sequence.

*NOTICE:

Stresses beyond those listed under “Absolute Maxi-

mum Ratings” may cause permanent damage to the

device. This is a stress rating only and functional

operation of the device at these or any other condi-

tions beyond those indicated in the operational sec-

tions of this specification is not implied. Exposure to

absolute maximum rating conditions for extended

periods may affect device reliability.

Block Diagram

Absolute Maximum Ratings*

Operating Temperature .................................. -55

°C to +125°C

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

32,768/65,536 x 8