3

5242B–SEEPR–01/09

AT34C02C

tive coupling that may appear during customer applications, Atmel recommends always

connecting the address pins to a known state. When using a pull-up resistor, Atmel recommends

using 10k

Ω or less.

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

operations. When WP is connected directly to Vcc, all write operations to the memory are inhib-

ited. If the pin is left floating, the WP pin will be internally pulled down to GND. However, due to

capacitive coupling that may appear during customer applications, Atmel recommends always

connecting the WP pins to a known state. When using a pull-up resistor, Atmel recommends

using 10k

Ω or less.

Note:

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

Note:

Table 2. AT34C02C Write Protection Modes

WP Pin Status

Permanent Write Protect

Register

Reversible Write Protect

Register

Part of the Array Write

Protected

V

CC

–

–

Full Array (2K)

GND or Floating

Not Programmed

Not Programmed

Normal Read/Write

GND or Floating

Programmed

–

First-Half of Array

(1K: 00H - 7FH)

GND or Floating

–

Programmed

First-Half of Array

(1K: 00H - 7FH)

Table 3. Pin Capacitance

(1)

Applicable over recommended operating range from T

Symbol

Test Condition

Max

Units

Conditions

C

I/O

Input/Output Capacitance (SDA)

8

pF

V

C

IN

Input Capacitance (A

6

pF

V

Table 4. DC Characteristics

Applicable over recommended operating range from: T

Symbol

Parameter

Test Condition

Min

Typ

Max

Units

V

CC

Supply Voltage

2.5

5.5

V

READ at 100 kHz

0.4

1.0

mA

I

CC

Supply Current V

WRITE at 100 kHz

2.0

3.0

mA

I

SB2

Standby Current V

V

1.6

4.0

µA

8.0

18.0

µA

I

LI

Input Leakage Current

V

0.10

3.0

µA

I

LO

Output Leakage Current

V

0.05

3.0

µA

Input Low Level(1)

V

V

IH

Input High Level(1)

V

V

V

0.4

V