AT24C32D datasheet(1/26 Pages) ATMEL | electrically erasable and programmable read only memory

Part #	AT24C32D

Description	electrically erasable and programmable read only memory

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Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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Features

• Low-voltage and Standard-voltage Operation

–V

CC = 1.7 to 5.5V

• Internally Organized 4096 x 8, 8192 x 8

• 2-Wire Serial Interface

• Schmitt Trigger, Filtered Inputs for Noise Suppression

• Bi-directional Data Transfer Protocol

• 1MHz (5.0V) and 400KHz (1.8V Compatibility)

• Write Protect Pin for Hardware Data Protection

• 32-Byte Page Write Mode (Partial Page Writes Allowed)

• Self-Timed Write Cycle (5ms max)

• High Reliability

– Endurance: 1 Million Write Cycles

– Data Retention: 100 Years

• Lead-free/Halogen-free Devices

• 8-lead JEDEC SOIC, 8-lead TSSOP, 8-lead UDFN, 8-lead XDFN, 5-lead SOT23

and 8-ball VFBGA

• Die Sales: Wafer Form, Waffle Pack and Bumped Wafers

Description

The Atmel® AT24C32D/64D provides 32,768-/65,536-bits of serial electrically eras-

able and programmable read only memory (EEPROM) organized as 4096/8192 words

of 8-bits each. The device’s cascadable feature allows up to eight devices to share a

common 2-wire bus. The device is optimized for use in many industrial and commer-

cial applications where low power and low voltage operation are essential. The

AT24C32D/64D is available in space saving 8-lead JEDEC SOIC, 8-lead TSSOP, 8-

lead UDFN, 8-lead XDFN, 5-lead SOT23 and 8-ball VFBGA and is accessed via a 2-

wire serial interface. In addition, the entire family operates from 1.7V to 5.5V.

VCC

WP

SCL

SDA

A0

A1

A2

GND

4

3

2

1

5

6

7

8

8-lead UDFN

Bottom View

A0

A1

A2

GND

1

2

3

4

8

7

6

5

8-lead SOIC

VCC

WP

SCL

SDA

SCL

GND

SDA

1

2

3

5

4

5-lead SOT23

WP

VCC

8-lead TSSOP

1

2

3

4

8

7

6

5

A0

A1

A2

GND

VCC

WP

SCL

SDA

VCC

WP

SCL

SDA

A0

A1

A2

GND

1

2

3

4

8

7

6

5

8-ball VFBGA

Bottom View

VCC

WP

SCL

SDA

A0

A1

A2

GND

4

3

2

1

5

6

7

8

8-lead XDFN

Bottom View

2-Wire Serial

Electrically

Erasable and

Programmable

Read-only

Memory

32K (4096 x 8)

64K (8192 x 8)

Atmel AT24C32D

Atmel AT24C64D

8717B–SEEPR–6/10

2-Wire, 32K

Serial E2PROM

Note:

For use of 5-lead SOT23,

the software A2, A1, and A0

bits in the device address

word must be set to zero to

properly communicate

Table 0-1.

Pin Configurations

Pin Name

Function

A0 - A2

Address Inputs

SDA

Serial Data

SCL

Serial Clock Input

WP

Write Protect

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