AT45D041

5

HARDWARE PAGE WRITE PROTECT: If the WP pin is

held low, the first 256 pages of the main memory cannot be

reprogrammed. The only way to reprogram the first 256

pages is to first drive the protect pin high and then use the

program commands previously mentioned.

RESET: A low state on the reset pin (RESET) will terminate

the operation in progress and reset the internal state

machine to an idle state. The device will remain in the reset

condition as long as a low level is present on the RESET

pin. Normal operation can resume once the RESET pin is

brought back to a high level.

The device also incorporates an internal power-on reset cir-

cuit; therefore, there are no restrictions on the RESET pin

during power-on sequences.

READY/BUSY: This open drain output pin will be driven

low when the device is busy in an internally self-timed oper-

ation. This pin, which is normally in a high state (through an

external pull-up resistor), will be pulled low during program-

ming operations, compare operations, and during page-to-

buffer transfers.

The busy status indicates that the Flash memory array and

one of the buffers cannot be accessed; read and write

operations to the other buffer can still be performed.

Absolute Maximum Ratings*

Temperature Under Bias ......................-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

All Input Voltages

(including NC Pins)

with Respect to Ground......................... -0.6V to +6.25V

All Output Voltages

with Respect to Ground................... -0.6V to V

DC and AC Operating Range

Note:

ational mode is started.

AT45D041

Operating Temperature (Case)

Com.

0

°C to 70°C

Ind.

-40

°C to 85°C

V

(1)

4.5V to 5.5V