Datasheet

ManualsBrandsMicrochip ManualsEEPROMEEPROM 32KB 900ns SOIC

 2002-2012 Microchip Technology Inc. DS21713M-page 1

24AA32A/24LC32A

Device Selection Table

Features:

• Single Supply with Operation down to 1.7V for

24AA32A Devices, 2.5V for 24LC32A Devices

• Low-Power CMOS Technology:

- Active current 1 mA, typical

- Standby current 1 A, typical

• 2-Wire Serial Interface, I

C™ Compatible

• Schmitt Trigger Inputs for Noise Suppression

• Output Slope Control to Eliminate Ground Bounce

• 100 kHz and 400 kHz Clock Compatibility

• Page Write Time 5 ms max.

• Self-Timed Erase/Write Cycle

• 32-Byte Page Write Buffer

• Hardware Write-Protect

• ESD Protection > 4,000V

• More than 1 Million Erase/Write Cycles

• Data Retention > 200 Years

• Factory Programming Available

• Packages Include 8-lead PDIP, SOIC, SOIJ,

TSSOP, X-Rotated TSSOP, MSOP, DFN, TDFN,

5-lead SOT-23 and Chip Scale

• Pb-Free and RoHS Compliant

• Temperature Ranges:

- Industrial (I): -40°C to +85°C

- Automotive (E): -40°C to +125°C

Description:

The Microchip Technology Inc. 24AA32A/24LC32A

(24XX32A*) is a 32 Kbit Electrically Erasable PROM.

The device is organized as a single block of 4K x 8-bit

memory with a 2-wire serial interface. Low-voltage

design permits operation down to 1.7V, with standby

and active currents of only 1 A and 1 mA,

respectively. It has been developed for advanced, low-

power applications such as personal communications

or data acquisition. The 24XX32A also has a page write

capability for up to 32 bytes of data. Functional address

lines allow up to eight devices on the same bus, for up

to 256 Kbits address space. The 24XX32A is available

in the standard 8-pin PDIP, surface mount SOIC, SOIJ,

TSSOP, DFN, TDFN and MSOP packages. The

24XX32A is also available in the 5-lead SOT-23 and

Chip Scale packages.

Block Diagram

Package Types

Part

Number

VCC

Range

Max. Clock

Frequency

Temp.

Ranges

24AA32A 1.7-5.5 400 kHz

(1)

24LC32A 2.5-5.5 400 kHz I, E

Note 1: 100 kHz for VCC <2.5V.

HV Generator

EEPROM

Array

Page Latches

YDEC

XDEC

Sense Amp.

R/W Control

I/O

Control

Logic

I/O

Memory

Control

Logic

SCL

SDA

Vcc

SCL

SDA

PDIP/MSOP/SOIC/SOIJ/TSSOP

DFN/TDFN

SCL

SDA

SOT-23

SCL

SDA

CS (Chip Scale)

(1)

SDA

SCL

(Top Down View,

Balls Not Visible)

Note 1: Available in I-temp, “AA” only.

X-Rotated TSSOP

SCL

SDA

(X/ST)

32K I

™

Serial EEPROM

*24XX32A is used in this document as a generic part number for the 24AA32A/24LC32A devices.

Summary of content (44 pages)

PAGE 1
24AA32A/24LC32A 32K I2C™ Serial EEPROM Device Selection Table Description: Part Number VCC Range Max. Clock Frequency Temp. Ranges 24AA32A 1.7-5.5 400 kHz(1) I 2.5-5.5 400 kHz I, E 24LC32A Note 1: The Microchip Technology Inc. 24AA32A/24LC32A (24XX32A*) is a 32 Kbit Electrically Erasable PROM. The device is organized as a single block of 4K x 8-bit memory with a 2-wire serial interface. Low-voltage design permits operation down to 1.
PAGE 2
4AA32A/24LC32A 1.0 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings (†) VCC .............................................................................................................................................................................6.5V All inputs and outputs w.r.t. VSS ......................................................................................................... -0.3V to VCC +1.0V Storage temperature .........................................................................
PAGE 3
24AA32A/24LC32A TABLE 1-2: AC CHARACTERISTICS Industrial (I): Automotive (E): AC CHARACTERISTICS Param. Symbol No. Characteristic TA = -40°C to +85°C, VCC = +1.7V to +5.5V TA = -40°C to +125°C, VCC = +2.5V to +5.5V Min. Max. Units Conditions 1 FCLK Clock Frequency — — 400 100 kHz 2.5V  VCC  5.5V 1.7V  VCC  2.5V (24AA32A) 2 THIGH Clock High Time 600 4000 — — ns 2.5V  VCC  5.5V 1.7V  VCC  2.5V (24AA32A) 3 TLOW Clock Low Time 1300 4700 — — ns 2.5V  VCC  5.5V 1.
PAGE 4
24AA32A/24LC32A FIGURE 1-1: BUS TIMING DATA 5 SCL SDA IN 7 3 4 D4 2 8 10 9 6 16 14 13 SDA OUT (protected) (unprotected) WP FIGURE 1-2: 12 11 BUS TIMING START/STOP D4 SCL 6 7 10 SDA Start DS21713M-page 4 Stop  2002-2012 Microchip Technology Inc.
PAGE 5
24AA32A/24LC32A 2.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 2-1.
PAGE 6
24AA32A/24LC32A 3.0 FUNCTIONAL DESCRIPTION The 24XX32A supports a bidirectional, 2-wire bus and data transmission protocol. A device that sends data onto the bus is defined as transmitter, while a device receiving data is defined as a receiver. The bus has to be controlled by a master device which generates the Serial Clock (SCL), controls the bus access and generates the Start and Stop conditions, while the 24XX32A works as slave.
PAGE 7
24AA32A/24LC32A 5.0 DEVICE ADDRESSING A control byte is the first byte received following the Start condition from the master device (Figure 5-1). The control byte consists of a four-bit control code. For the 24XX32A, this is set as ‘1010’ binary for read and write operations. The next three bits of the control byte are the Chip Select bits (A2, A1, A0). The Chip Select bits allow the use of up to eight 24XX32A devices on the same bus and are used to select which device is accessed.
PAGE 8
24AA32A/24LC32A 6.0 WRITE OPERATIONS 6.1 Byte Write Following the Start condition from the master, the control code (4 bits), the Chip Select (3 bits), and the R/W bit (which is a logic low) are clocked onto the bus by the master transmitter. This indicates to the addressed slave receiver that the address high byte will follow once it has generated an Acknowledge bit during the ninth clock cycle.
PAGE 9
24AA32A/24LC32A FIGURE 6-1: BYTE WRITE Bus Activity Master S T A R T Control Byte Address High Byte AA S 1 0 1 0A 210 0 SDA Line S T O P Data xxx x P A C K A C K A C K A C K Bus Activity Address Low Byte x = “don’t care” bit FIGURE 6-2: PAGE WRITE Bus Activity Master S T A R T SDA Line AA S10 1 0A 2100 Control Byte Bus Activity Address High Byte Address Low Byte Data Byte 0 S T O P P Data Byte 31 xxxx A C K A C K A C K A C K A C K x = “don’t care” bit  2002-2012 Microch
PAGE 10
24AA32A/24LC32A 7.0 ACKNOWLEDGE POLLING Since the device will not acknowledge during a write cycle, this can be used to determine when the cycle is complete (this feature can be used to maximize bus throughput). Once the Stop condition for a Write command has been issued from the master, the device initiates the internally-timed write cycle. ACK polling can then be initiated immediately. This involves the master sending a Start condition followed by the control byte for a Write command (R/W = 0).
PAGE 11
24AA32A/24LC32A 8.0 READ OPERATION 8.3 Read operations are initiated in the same way as write operations, with the exception that the R/W bit of the control byte is set to ‘1’. There are three basic types of read operations: current address read, random read and sequential read. 8.1 Current Address Read The 24XX32A contains an address counter that maintains the address of the last word accessed, internally incremented by ‘1’.
PAGE 12
24AA32A/24LC32A FIGURE 8-2: Bus Activity Master RANDOM READ S T A R T Control Byte Address High Byte AA xxxx S1010A 2100 A C Bus Activity K x = “don’t care” bit S T A R T Address Low Byte SDA Line FIGURE 8-3: Bus Activity Master A C K A C K Control Byte S 1 0 1 0 A A A1 210 S T O P Data Byte P N O A C K A C K SEQUENTIAL READ Control Byte Data n Data n + 1 Data n + 2 Data n + x S T O P P SDA Line Bus Activity DS21713M-page 12 A C K A C K A C K A C K N O A C K  2002-2012 Microch
PAGE 13
24AA32A/24LC32A 9.0 PACKAGING INFORMATION 9.1 Package Marking Information 8-Lead PDIP (300 mil) XXXXXXXX T/XXXNNN YYWW 8-Lead SOIC (3.90 mm) XXXXXXXT XXXXYYWW NNN 8-Lead SOIC (5.28 mm) XXXXXXXX T/XXXXXX YYWWNNN Example: 24LC32A I/P e3 13F 0527 Example: 24LC32AI SN e3 0527 13F Example: 24LC32A I/SM e3 052713F 8-Lead TSSOP Example: XXXX 4LA TYWW I527 NNN 13F 8-Lead 2x3 DFN XXX YWW NN 8-Lead MSOP XXXXXT YWWNNN  2002-2012 Microchip Technology Inc.
PAGE 14
24AA32A/24LC32A Example: 8-Lead 2x3 TDFN A64 527 I3 XXX YWW NN Example: 5-Lead SOT-23 XXNN M6NN 5-Lead Chip Scale Example: 67 XW 1st Line Marking Codes Part Number TSSOP TSSOP X-Rotated MSOP I Temp. E Temp. I Temp. E Temp. I Temp. E Temp. 4AA 4AAX 4A32AT 261 — A61 — B6NN — 4LA 4LAX 4L32AT 264 265 A64 A65 M6NN N6NN 24AA32A 24LC32A Note: DFN TDFN SOT-23 T = Temperature grade (I, E). DS21713M-page 14  2002-2012 Microchip Technology Inc.
PAGE 15
24AA32A/24LC32A Legend: XX...X T Y YY WW NNN e3 Part number or part number code Temperature (I, E) Year code (last digit of calendar year) Year code (last 2 digits of calendar year) Week code (week of January 1 is week ‘01’) Alphanumeric traceability code (2 characters for small packages) Pb-free JEDEC designator for Matte Tin (Sn) Note: For very small packages with no room for the Pb-free JEDEC designator e3 , the marking will only appear on the outer carton or reel label.
PAGE 16
24AA32A/24LC32A 3 & ' !& " & 4 # * !( ! ! & 4 % & & # & && 255*** ' '5 4 N NOTE 1 E1 1 3 2 D E A2 A L A1 c e eB b1 b 6 &! ' ! 9 ' &! 7"') % ! 7,8. 7 7 & ; < & & 7: 1 , = = - 1 ! & & = = .
PAGE 17
24AA32A/24LC32A Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging  2002-2012 Microchip Technology Inc.
PAGE 18
24AA32A/24LC32A Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS21713M-page 18  2002-2012 Microchip Technology Inc.
PAGE 19
24AA32A/24LC32A ! "" #$ %& ! ' 3 & ' !& " & 4 # * !( ! ! & 4 % & & # & && 255*** ' '5 4  2002-2012 Microchip Technology Inc.
PAGE 20
24AA32A/24LC32A Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS21713M-page 20  2002-2012 Microchip Technology Inc.
PAGE 21
24AA32A/24LC32A Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging  2002-2012 Microchip Technology Inc.
PAGE 22
24AA32A/24LC32A Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS21713M-page 22  2002-2012 Microchip Technology Inc.
PAGE 23
24AA32A/24LC32A () )" * ! ( +%+ ( ! 3 & ' !& " & 4 # * !( ! ! & 4 % & & # & && 255*** ' '5 4 D N E E1 NOTE 1 1 2 b e c A φ A2 A1 L L1 6 &! ' ! 9 ' &! 7"') % ! 99 . . 7 7 7: ; < & : 8 & = = < = # # 4 4 !! & # %% ? 1 , : > #& . # # 4 > #& .
PAGE 24
AA32A/24LC32A Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS21713M-page 24  2002-2012 Microchip Technology Inc.
PAGE 25
24AA32A/24LC32A , $ * - .' /0 0 %& , 3 & ' !& " & 4 # * !( ! ! & 4 % & & # & && 255*** ' '5 4 e D b N N L K E2 E EXPOSED PAD NOTE 1 NOTE 1 2 1 2 1 D2 BOTTOM VIEW TOP VIEW A A3 A1 NOTE 2 6 &! ' ! 9 ' &! 7"') % ! 99 . .
PAGE 26
24AA32A/24LC32A Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS21713M-page 26  2002-2012 Microchip Technology Inc.
PAGE 27
24AA32A/24LC32A Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging  2002-2012 Microchip Technology Inc.
PAGE 28
24AA32A/24LC32A Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS21713M-page 28  2002-2012 Microchip Technology Inc.
PAGE 29
24AA32A/24LC32A , $ * - . /0 0 %12 ( , 3 & ' !& " & 4 # * !( ! ! & 4 % & & # & && 255*** ' '5 4  2002-2012 Microchip Technology Inc.
PAGE 30
24AA32A/24LC32A Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS21713M-page 30  2002-2012 Microchip Technology Inc.
PAGE 31
24AA32A/24LC32A Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging  2002-2012 Microchip Technology Inc.
PAGE 32
24AA32A/24LC32A Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS21713M-page 32  2002-2012 Microchip Technology Inc.
PAGE 33
24AA32A/24LC32A 2 ! (" " !( !( / 3 & ' !& " & 4 # * !( ! ! & 4 % & & # & && 255*** ' '5 4 b N E E1 3 2 1 e e1 D A2 A c φ A1 L L1 6 &! ' ! 9 ' &! 7"') % ! 99 . . 7 7: ; 7 9 # & 1 , :"&! # 9 # & : 8 & = < = - = : > #& . = - # # 4 > #& .
PAGE 34
24AA32A/24LC32A Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS21713M-page 34  2002-2012 Microchip Technology Inc.
PAGE 35
24AA32A/24LC32A Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging  2002-2012 Microchip Technology Inc.
PAGE 36
24AA32A/24LC32A Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging Please contact your local Microchip representative for specific details. DS21713M-page 36  2002-2012 Microchip Technology Inc.
PAGE 37
24AA32A/24LC32A Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging  2002-2012 Microchip Technology Inc.
PAGE 38
24AA32A/24LC32A APPENDIX A: REVISION HISTORY Revision D (12/2003) Corrections to Section 1.0, Electrical Characteristics. Revision E (03/2005) Added DFN package. Revision F (08/2005) Revised Sections 4.3, 7.2 and 7.4. Revision G (07/2006) Replaced 2x3 DFN (MC) Package Revision H (02/2007) Changed 1.8V to 1.7V; Revised Features Section; Replaced Package Drawings; Deleted Rotated TSSOP; Revised Product ID Section.
PAGE 39
24AA32A/24LC32A THE MICROCHIP WEB SITE CUSTOMER SUPPORT Microchip provides online support via our WWW site at www.microchip.com. This web site is used as a means to make files and information easily available to customers.
PAGE 40
24AA32A/24LC32A READER RESPONSE It is our intention to provide you with the best documentation possible to ensure successful use of your Microchip product. If you wish to provide your comments on organization, clarity, subject matter, and ways in which our documentation can better serve you, please FAX your comments to the Technical Publications Manager at (480) 792-4150. Please list the following information, and use this outline to provide us with your comments about this document.
PAGE 41
24AA32A/24LC32A PRODUCT IDENTIFICATION SYSTEM To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office. PART NO. X /XX Temperature Package Range Device 24AA32A: 1.7V, 32 Kbit I2C Serial EEPROM 24AA32AT: 1.7V, 32 Kbit I2C Serial EEPROM (Tape and Reel) 24AA32AX: 1.7V, 32 Kbit I2C Serial EEPROM in  alternate pinout (ST only) 24AA32AXT 1.7V, 32 Kbit I2C Serial EEPROM in  alternate pinout (ST only) 24LC32A: 2.5V, 32 Kbit I2C Serial EEPROM 24LC32AT: 2.
PAGE 42
24AA32A/24LC32A NOTES: DS21713M-page 42  2002-2012 Microchip Technology Inc.
PAGE 43
Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet. • Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions. • There are dishonest and possibly illegal methods used to breach the code protection feature.
PAGE 44
Worldwide Sales and Service AMERICAS ASIA/PACIFIC ASIA/PACIFIC EUROPE Corporate Office 2355 West Chandler Blvd. Chandler, AZ 85224-6199 Tel: 480-792-7200 Fax: 480-792-7277 Technical Support: http://www.microchip.com/ support Web Address: www.microchip.