AT25080/160/320/640

2

are essential. The AT25080/160/320/640 is available in

space saving 8-pin PDIP, JEDEC SOIC, and 14-pin and

20-pin TSSOP packages.

The AT25080/160/320/640 is enabled through the Chip

Select pin (CS) and accessed via a 3-wire interface con-

sisting of Serial Data Input (SI), Serial Data Output (SO),

and Serial Clock (SCK). All programming cycles are com-

pletely self-timed, and no separate ERASE cycle is

required before WRITE.

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.

Block Diagram

Absolute Maximum Ratings*

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

°C to +125°C

*NOTICE:

Stresses beyond those listed under “Absolute

Maximum Ratings” may cause permanent dam-

age 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

conditions 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