AT24C64B-W1.8-11(2007) Просмотр технического описания (PDF) - Atmel Corporation

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производитель

AT24C64B-W1.8-11
(Rev.:2007)

2-Wire Serial EEPROM

Atmel Corporation 

AT24C64B

pling to the circuit board VCC plane is <3pF. If coupling is >3pF, Atmel recommends connecting

the address pins to GND.

WRITE PROTECT (WP): The write protect input, when connected to GND, allows normal write

operations. When WP is connected high to VCC, all write operations to the upper quandrant (16K

bits) of memory are inhibited. If the pin is left floating, the WP pin will be internally pulled down to

GND if the capacitive coupling to the circuit board VCC plane is <3pF. If coupling is >3pF, Atmel

recommends connecting the pin to GND.

3. Memory Organization

AT24C64B, 64K SERIAL EEPROM: The 64K is internally organized as 256 pages of 32 bytes

each. Random word addressing requires a 13 bit data word address.

Pin Capacitance(1)

Applicable over recommended operating range from TA = 25°C, f = 1.0 MHz, VCC = +1.8V

Symbol Test Condition

Max

CI/O

Input/Output Capacitance (SDA)

8

CIN

Input Capacitance (A0, A1, A2, SCL)

6

Note: 1. This parameter is characterized and is not 100% tested.

Units

pF

pF

Conditions

VI/O = 0V

VIN = 0V

DC Characteristics

Applicable over recommended operating range from: TAI = -40 to +85°C, VCC = +1.8 to +5.5V (unless otherwise noted)

Symbol Parameter

Test Condition

Min

Typ

Max

Units

VCC1

Supply Voltage

1.8

5.5

V

VCC2

Supply Voltage

2.7

5.5

V

VCC3

Supply Voltage

4.5

5.5

V

ICC1

Supply Current

VCC = 5.0V

READ at 400 kHz

0.4

1.0

mA

ICC2

Supply Current

VCC = 5.0V

WRITE at 400 kHz

2.0

3.0

mA

ISB1

Standby Current

(1.8V option)

VCC = 1.8V

VIN = VCC or VSS

1.0

μA

ISB2

Standby Current

(2.7V option)

VCC = 2.7V

VIN = VCC or VSS

2.0

μA

ISB3

Standby Current

(5V option)

VCC = 4.5 - 5.5V VIN = VCC or VSS

6.0

μA

ILI

Input Leakage

Current

VIN = VCC or VSS

0.10

3.0

μA

ILO

VIL

VIH

VOL2

VOL1

Note:

Output Leakage

Current

Input Low Level(1)

Input High Level(1)

VOUT = VCC or VSS

Output Low Level

VCC = 3.0V

IOL = 2.1 mA

Output Low Level

VCC = 1.8V

IOL = 0.15 mA

1. VIL min and VIH max are reference only and are not tested.

0.05

3.0

μA

-0.6

VCC x 0.7

VCC x 0.3

V

VCC + 0.5

V

0.4

V

0.2

V

3

3350E–SEEPR–9/07

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