Datasheet

ManualsBrandsMicrochip ManualsEEPROMEEPROM SOT-23-6

 2013 Microchip Technology Inc. DS20005202A-page 1

24AA02UID/24AA025UID

Device Selection Table

Features:

• Preprogrammed 32-Bit Serial Number:

- Unique across all UID-family EEPROMs

- Scalable to 48-bit, 64-bit, 128-bit, 256-bit,

and other lengths

• Single Supply with Operation Down to 1.7V

• Low-Power CMOS Technology:

- Read current 1 mA, max.

- Standby current 1 A, max.

• 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 3 ms, typical

• Self-Timed Erase/Write Cycle

• Page Write Buffer:

- 8-byte page (24AA02UID)

- 16-byte page (24AA025UID)

• ESD Protection >4,000V

• More than 1 Million Erase/Write Cycles

• Data Retention >200 Years

• Factory Programming Available

• Available Packages:

- 8-lead PDIP, 8-lead SOIC, and 5-lead

SOT-23 (24AA02UID)

- 8-lead PDIP, 8-lead SOIC, and 6-lead

SOT-23 (24AA025UID)

• RoHS Compliant

• Temperature Ranges:

- Industrial (I): -40°C to +85°C

Description:

The Microchip Technology Inc. 24AA02UID/

24AA025UID (24AA02XUID*) is a 2 Kbit Electrically

Erasable PROM with a preprogrammed, 32-bit

unique ID. The device is organized as two blocks of

128 x 8-bit memory with a 2-wire serial interface.

Low-voltage design permits operation down to 1.7V,

with maximum standby and active currents of only

1 A and 1 mA, respectively. The 24AA02XUID also

has a page write capability for up to eight bytes of

data (16 bytes on the 24AA025UID). The

24AA02XUID is available in the standard 8-pin PDIP,

8-pin SOIC, 5-lead SOT-23, and 6-lead SOT-23

packages.

Package Types (24AA02UID)

Package Types (24AA025UID)

Part Number

VCC

Range

Max. Clock

Frequency

Temp.

Ranges

Cascadable Page Size

Unique ID

Length

24AA02UID 1.7-5.5V 400 kHz

(1)

INo8-Byte32-Bit

24AA025UID 1.7-5.5V 400 kHz

(1)

I Yes 16-Byte 32-Bit

Note 1: 100 kHz for VCC <2.5V

PDIP/SOIC

SCL

SDA

SOT-23

SCL

Vss

SDA

Vcc

PDIP/SOIC

SCL

SDA

SOT-23

SCL

SDA

2K I

C™ Serial EEPROMs with Unique 32-bit Serial Number

*24AA02XUID is used in this document as a generic

part number for the 24AA02UID/24AA025UID devices.

Summary of content (30 pages)

PAGE 1
24AA02UID/24AA025UID 2K I2C™ Serial EEPROMs with Unique 32-bit Serial Number Device Selection Table Part Number 24AA02UID 24AA025UID Note 1: VCC Range Max. Clock Frequency Temp. Ranges Cascadable Page Size Unique ID Length 1.7-5.5V 400 kHz(1) I No 8-Byte 32-Bit 1.7-5.5V (1) I Yes 16-Byte 32-Bit 400 kHz 100 kHz for VCC <2.
PAGE 2
4AA02UID/24AA025UID Block Diagram A0(1) A1(1) A2(1) I/O Control Logic HV Generator Memory Control Logic XDEC EEPROM Array SDA SCL VCC VSS Write-Protect Circuitry YDEC Sense Amp. R/W Control Note 1: Pins A0, A1 and A2 are not available on the 24AA02UID. DS20005202A-page 2  2013 Microchip Technology Inc.
PAGE 3
24AA02UID/24AA025UID 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 4
24AA02UID/24AA025UID TABLE 1-2: AC CHARACTERISTICS AC CHARACTERISTICS Param. No. Sym. Characteristic TA = -40°C to +85°C, VCC = +1.7V to +5.5V Industrial (I): Min. Typ. Max. Units Conditions 1 FCLK Clock frequency — — — — 400 100 kHz 2.5V  VCC  5.5V 1.7V  VCC  2.5V 2 THIGH Clock high time 600 4000 — — — — ns 2.5V  VCC  5.5V 1.7V  VCC  2.5V 3 TLOW Clock low time 1300 4700 — — — — ns 2.5V  VCC  5.5V 1.7V  VCC  2.
PAGE 5
24AA02UID/24AA025UID FIGURE 1-1: BUS TIMING DATA 5 4 2 3 SCL 7 SDA IN 8 10 9 6 14 12 11 SDA OUT FIGURE 1-2: BUS TIMING START/STOP D3 SCL 6 7 10 SDA Start  2013 Microchip Technology Inc.
PAGE 6
24AA02UID/24AA025UID 2.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 2-1. TABLE 2-1: Name PDIP SOIC 5-Pin SOT-23 6-Pin SOT-23 A0 1 1 — 5 Chip Address Input(1) A1 2 2 — 4 Chip Address Input(1) A2 3 3 — — Chip Address Input(1) VSS 4 4 2 2 Ground Description SDA 5 5 3 3 Serial Address/Data I/O SCL 6 6 1 1 Serial Clock NC 7 7 5 — Not Connected VCC 8 8 4 6 +1.7V to 5.5V Power Supply Note 1: 2.
PAGE 7
24AA02UID/24AA025UID 3.0 FUNCTIONAL DESCRIPTION The 24AA02XUID 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 24AA02XUID works as slave.
PAGE 8
24AA02UID/24AA025UID 5.0 DEVICE ADDRESSING FIGURE 5-1: A control byte is the first byte received following the Start condition from the master device. The control byte consists of a 4-bit control code. For the 24AA02XUID, this is set as ‘1010’ binary for read and write operations. For the 24AA02UID the next three bits of the control byte are “don’t cares”. For the 24AA025UID, the next three bits of the control byte are the Chip Select bits (A2, A1, A0).
PAGE 9
24AA02UID/24AA025UID 6.0 WRITE OPERATION 6.1 Byte Write constant. If the master should transmit more than eight words (16 for the 24AA025UID) prior to generating the Stop condition, the address counter will roll over and the previously received data will be overwritten. As with the byte write operation, once the Stop condition is received an internal write cycle will begin (Figure 6-2).
PAGE 10
24AA02UID/24AA025UID 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 and 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
24AA02UID/24AA025UID 8.0 READ OPERATION 8.3 Sequential Read Read operations are initiated in the same way as write operations, with the exception that the R/W bit of the slave address is set to ‘1’. There are three basic types of read operations: current address read, random read and sequential read.
PAGE 12
24AA02UID/24AA025UID FIGURE 8-2: RANDOM READ Bus Activity Master S T A R T Control Byte S T A R T Word Address (n) * * * Chip Select Bits Bus Activity Note: FIGURE 8-3: Bus Activity Master SDA Line Bus Activity DS20005202A-page 12 S T O P Data (n) * ** S 1 0 1 0 A2A1A0 0 SDA Line Control Byte S 1 0 1 0 A2A1A0 1 A C K A C K Chip Select Bits P A C K N o A C K * Bits A0, A1 and A2 are “don’t cares” for the 24AA02UID.
PAGE 13
24AA02UID/24AA025UID 9.0 PREPROGRAMMED UNIQUE 32-BIT SERIAL NUMBER 9.2 For applications that require serial numbers larger than 32 bits, additional data bytes can be used to pad the provided serial number to meet the required length. Any data byte values can be used for padding as the 32-bit serial number ensures the extended serial number remains unique. The 24AA02XUID is programmed at the factory with a unique 32-bit serial number stored in the upper half of the array and permanently write-protected.
PAGE 14
24AA02UID/24AA025UID 10.0 PACKAGING INFORMATION 10.1 Package Marking Information 8-Lead PDIP (300 mil) Example: XXXXXXXX TXXXXNNN YYWW 24AA02ID I/P e3 1L7 1327 8-Lead SOIC (3.90 mm) Example: 24A2UIDI SN e3 1327 1L7 XXXXXXXT XXXXYYWW NNN 5-Lead SOT-23 Example: XXXXY WWNNN AAAF3 271L7 6-Lead SOT-23 Example: XXXXY WWNNN AAAE3 271L7 1st Line Marking Code Part Number SOT-23 SOIC PDIP I Temp. I Temp. I Temp.
PAGE 15
24AA02UID/24AA025UID Legend: XX...X T Y YY WW NNN e3 Note: Note: 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) 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
24AA02UID/24AA025UID Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS20005202A-page 16  2013 Microchip Technology Inc.
PAGE 17
24AA02UID/24AA025UID Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging  2013 Microchip Technology Inc.
PAGE 18
24AA02UID/24AA025UID & ! " #$% ! " # $ % & "' " " ( $ ) % *++&&& ! !+ $ DS20005202A-page 18  2013 Microchip Technology Inc.
PAGE 19
24AA02UID/24AA025UID ' & ( ( " ( ) % ! " # $ % & "' " " ( $ ) % *++&&& ! !+ $ b N E E1 3 2 1 e e1 D A2 A c φ A1 L L1 ? " ! " @ ! " A#!H ) ( " @@ 6 6 A AE G A ; @ % ( ; < = E# " % @ % ( 3 E> J K K 3 1 3 K 3; E> L % 6 K 1 % % ( $ L % 63 3 1 K 3
PAGE 20
24AA02UID/24AA025UID Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS20005202A-page 20  2013 Microchip Technology Inc.
PAGE 21
24AA02UID/24AA025UID * & ( ( " ( ) % ! " # $ % & "' " " ( $ ) % *++&&& ! !+ $ b 4 N E E1 PIN 1 ID BY LASER MARK 1 2 3 e e1 D A A2 c φ L A1 L1 ? " ! " @ ! " A#!H ) ( " @@ 6 6 A A AE ( ; < = E# " % @ % ( 3 3 < = E> J G N K K 3 1 3 K 3; E> L % 6 K 1 % %
PAGE 22
24AA02UID/24AA025UID Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS20005202A-page 22  2013 Microchip Technology Inc.
PAGE 23
24AA02UID/24AA025UID APPENDIX A: REVISION HISTORY Revision A (05/13) Initial release.  2013 Microchip Technology Inc.
PAGE 24
AA02UID/24AA025UID NOTES: DS20005202A-page 24  2013 Microchip Technology Inc.
PAGE 25
24AA02UID/24AA025UID 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 26
24AA02UID/24AA025UID 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 27
24AA02UID/24AA025UID 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. Device Device: X /XX Temperature Package Range 24AA02UID = 24AA02UIDT = 24AA025UID = 24AA025UIDT = 1.7V, 2 Kbit I2C™ Serial EEPROM with 32-bit Serial Number 1.7V, 2 Kbit I2C Serial EEPROM with 32-bit Serial Number (Tape and Reel) 1.7V, 2 Kbit I2C Serial EEPROM with 32-bit Serial Number and Address Pins 1.
PAGE 28
24AA02UID/24AA025UID NOTES: DS20005202A-page 28  2013 Microchip Technology Inc.
PAGE 29
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 30
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