AT24C64D-XHM データシートの表示（PDF） - Atmel Corporation

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AT24C64D-XHM

2-Wire Serial Electrically Erasable and Programmable Read-only Memory

Atmel Corporation 

Features

• Low-voltage and Standard-voltage Operation

– VCC = 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.

Table 0-1. Pin Configurations

Pin Name

A0 - A2

SDA

SCL

WP

Function

Address Inputs

Serial Data

Serial Clock Input

Write Protect

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

8-lead SOIC

A0 1

A1 2

A2 3

GND 4

8

VCC

7 WP

6 SCL

5 SDA

8-lead UDFN

VCC 8

WP 7

SCL 6

SDA 5

1 A0

2 A1

3 A2

4 GND

Bottom View

5-lead SOT23

SCL 1

5 WP

GND 2

SDA 3

4

VCC

8-lead TSSOP

A0 1

A1 2

A2 3

GND 4

8 VCC

7 WP

6 SCL

5 SDA

8-lead XDFN

VCC 8

WP 7

SCL 6

SDA 5

1 A0

2 A1

3 A2

4 GND

Bottom View

8-ball VFBGA

VCC 8

WP 7

SCL 6

SDA 5

1 A0

2 A1

3 A2

4 GND

Bottom View

2-Wire Serial

Electrically

Erasable and

Programmable

Read-only

Memory

32K (4096 x 8)

64K (8192 x 8)

Atmel AT24C32D

Atmel AT24C64D

2-Wire, 32K

Serial E2PROM

8717B–SEEPR–6/10

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