AT28C64B_09 datasheet(5/18 Pages) ATMEL | 64K (8K x 8) Parallel EEPROM with Page Write and Software Data Protection

Part No.	AT28C64B

Description	64K (8K x 8) Parallel EEPROM with Page Write and Software Data Protection

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Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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5 / 18 page

5

0270L–PEEPR–2/09

AT28C64B

Notes:

1. X can be VIL or VIH.

2. See “AC Write Waveforms” on page 8.

3. V

H = 12.0V ±0.5V.

5.

DC and AC Operating Range

AT28C64B-15

Operating Temperature (Case)

-40°C - 85°C

VCC Power Supply

5V

±10%

6.

Operating Modes

Mode

CE

OE

WE

I/O

Read

V

IL

V

IL

V

IH

D

OUT

Write(2)

V

IL

V

IH

V

IL

D

IN

Standby/Write Inhibit

VIH

X(1)

X

High Z

Write Inhibit

X

V

IH

Write Inhibit

X

V

IL

X

Output Disable

X

VIH

X

High Z

Chip Erase

V

IL

V

H

(3)

V

IL

High Z

7.

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 VCC + 0.6V

Voltage on OE and A9

with Respect to Ground ...................................-0.6V to +13.5V

8.

DC Characteristics

Symbol

Parameter

Condition

Min

Max

Units

ILI

Input Load Current

VIN = 0V to VCC + 1V

10

µA

I

LO

Output Leakage Current

V

I/O = 0V to VCC

10

µA

ISB1

VCC Standby Current CMOS

CE = VCC - 0.3V to VCC + 1V

100

µA

ISB2

VCC Standby Current TTL

CE = 2.0V to VCC + 1V

2

mA

I

CC

V

CC Active Current

f = 5 MHz; I

OUT = 0 mA

40

mA

VIL

Input Low Voltage

0.8

V

IH

Input High Voltage

2.0

V

OL

Output Low Voltage

I

OL = 2.1 mA

0.40

V

VOH

Output High Voltage

IOH = -400 µA

2.4

V

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