24AA02/24LC02B 2K I2C™ Serial EEPROM Device Selection Table Part Number VCC Range Max. Clock Frequency 24AA02 1.7-5.5 400 kHz(1) 24LC02B 2.5-5.5 400 kHz Note 1: Description: Temp. Ranges I I, E 100 kHz for VCC <2.5V. Features: • Single Supply with Operation down to 1.7V for 24AA02 Devices, 2.5V for 24LC02B Devices • Low-Power CMOS Technology: - Read current 1 mA, max. - Standby current 1 μA, max. (I-temp) • 2-Wire Serial Interface, I2C™ 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 • 8-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, TSSOP, DFN, TDFN, MSOP, 5-lead SOT-23 and SC-70 • Pb-free and RoHS Compliant • Temperature Ranges: - Industrial (I): -40°C to +85°C - Automotive (E): -40°C to +125°C The Microchip Technology Inc. 24AA02/24LC02B (24XX02*) is a 2 Kbit Electrically Erasable PROM. The device is organized as one block of 256 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 μA and 1 mA, respectively. The 24XX02 also has a page write capability for up to 8 bytes of data. The 24XX02 is available in the standard 8-pin PDIP, surface mount SOIC, TSSOP, 2x3 DFN, 2x3 TDFN and MSOP packages and is also available in the 5-lead SOT-23 and SC-70 packages. Package Types SOIC, TSSOP PDIP, MSOP A0 1 8 VCC A0 1 8 VCC A1 2 7 WP A1 2 7 WP A2 3 6 SCL A2 3 6 SCL VSS 4 5 SDA VSS 4 5 SDA SOT-23/SC-70 SCL 1 5 DFN/TDFN WP A0 1 A1 2 Vss 2 SDA 3 Note: A2 3 VSS 4 4 8 VCC 7 WP 6 SCL 5 SDA Vcc Pins A0, A1 and A2 are not used by the 24XX02. (No internal connections). Block Diagram HV Generator WP I/O Control Logic Memory Control Logic XDEC EEPROM Array Page Latches I/O SCL YDEC SDA VCC VSS © 2009 Microchip Technology Inc. Sense Amp. R/W Control DS21709J-page 1 24AA02/24LC02B 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 ...............................................................................................................................-65°C to +150°C Ambient temperature with power applied ................................................................................................-40°C to +125°C ESD protection on all pins ......................................................................................................................................................≥ 4 kV † NOTICE: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability. TABLE 1-1: DC CHARACTERISTICS DC CHARACTERISTICS Param. No. Sym. Characteristic Industrial (I): Automotive (E): 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. Typ. Max. Units Conditions D1 VIH WP, SCL and SDA pins — — — — — D2 — High-level input voltage 0.7 VCC — — V — D3 VIL Low-level input voltage D4 VHYS Hysteresis of Schmitt Trigger inputs D5 VOL D6 ILI D7 — — 0.3 VCC V — 0.05 VCC — — V (Note) Low-level output voltage — — 0.40 V IOL = 3.0 mA, VCC = 2.5V Input leakage current — — ±1 μA VIN = VSS or VCC ILO Output leakage current — — ±1 μA VOUT = VSS or VCC D8 CIN, COUT Pin capacitance (all inputs/outputs) — — 10 pF VCC = 5.0V (Note) TA = 25°C, FCLK = 1 MHz D9 ICC write Operating current — 0.1 3 mA VCC = 5.5V, SCL = 400 kHz D10 ICC read D11 ICCS Note: Standby current — 0.05 1 mA — — — 0.01 — 1 5 μΑ μΑ Industrial Automotive SDA = SCL = VCC WP = VSS This parameter is periodically sampled and not 100% tested. DS21709J-page 2 © 2009 Microchip Technology Inc. 24AA02/24LC02B TABLE 1-2: AC CHARACTERISTICS AC CHARACTERISTICS Param. No. Sym. Characteristic Industrial (I): Automotive (E): 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. Typ. Max. Units Conditions 1 FCLK Clock frequency — — — — 400 100 kHz 2.5V ≤ VCC ≤ 5.5V 1.7V ≤ VCC < 2.5V (24AA02) 2 THIGH Clock high time 600 4000 — — — — ns 2.5V ≤ VCC ≤ 5.5V 1.7V ≤ VCC < 2.5V (24AA02) 3 TLOW Clock low time 1300 4700 — — — — ns 2.5V ≤ VCC ≤ 5.5V 1.7V ≤ VCC < 2.5V (24AA02) 4 TR SDA and SCL rise time (Note 1) — — — — 300 1000 ns 2.5V ≤ VCC ≤ 5.5V (Note 1) 1.7V ≤ VCC < 2.5V (24AA02) (Note 1) 5 TF SDA and SCL fall time — — — 300 ns (Note 1) 6 THD:STA Start condition hold time 600 4000 — — — — ns 2.5V ≤ VCC ≤ 5.5V 1.7V ≤ VCC < 2.5V (24AA02) 7 TSU:STA Start condition setup time 600 4700 — — — — ns 2.5V ≤ VCC ≤ 5.5V 1.7V ≤ VCC < 2.5V (24AA02) 8 THD:DAT Data input hold time 0 — — — ns (Note 2) 9 TSU:DAT Data input setup time 100 250 — — — — ns 2.5V ≤ VCC ≤ 5.5V 1.7V ≤ VCC < 2.5V (24AA02) 10 TSU:STO Stop condition setup time 600 4000 — — — — ns 2.5V ≤ VCC ≤ 5.5V 1.7V ≤ VCC < 2.5V (24AA02) 11 TAA Output valid from clock (Note 2) — — — — 900 3500 ns 2.5V ≤ VCC ≤ 5.5V 1.7V ≤ VCC < 2.5V (24AA02) 12 TBUF Bus free time: Time the bus must be free before a new transmission can start 1300 4700 — — — — ns 2.5V ≤ VCC ≤ 5.5V 1.7V ≤ VCC < 2.5V (24AA02) 13 TOF Output fall time from VIH minimum to VIL maximum 20+0.1CB — — — 250 250 ns 2.5V ≤ VCC ≤ 5.5V 1.7V ≤ VCC < 2.5V (24AA02) 14 TSP Input filter spike suppression (SDA and SCL pins) — — 50 ns (Notes 1 and 3) 15 TWC Write cycle time (byte or page) — — 5 ms — 16 — Endurance 1M — — Note 1: 2: 3: 4: cycles 25°C, (Note 4) Not 100% tested. CB = total capacitance of one bus line in pF. As a transmitter, the device must provide an internal minimum delay time to bridge the undefined region (minimum 300 ns) of the falling edge of SCL to avoid unintended generation of Start or Stop conditions. The combined TSP and VHYS specifications are due to new Schmitt Trigger inputs which provide improved noise spike suppression. This eliminates the need for a TI specification for standard operation. This parameter is not tested but ensured by characterization. For endurance estimates in a specific application, please consult the Total Endurance™ Model which can be obtained from Microchip’s web site at www.microchip.com. © 2009 Microchip Technology Inc. DS21709J-page 3 24AA02/24LC02B 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 D4 SCL 6 7 10 SDA Start DS21709J-page 4 Stop © 2009 Microchip Technology Inc. 24AA02/24LC02B 2.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 2-1. TABLE 2-1: PIN FUNCTION TABLE Name PDIP SOIC TSSOP DFN TDFN MSOP SOT23 SC-70 Description A0 1 1 1 1 1 1 — — Not Connected A1 2 2 2 2 2 2 — — Not Connected A2 3 3 3 3 3 3 — — Not Connected VSS 4 4 4 4 4 4 2 2 Ground SDA 5 5 5 5 5 5 3 3 Serial Address/Data I/O SCL 6 6 6 6 6 6 1 1 Serial Clock WP 7 7 7 7 7 7 5 5 Write-Protect Input VCC 8 8 8 8 8 8 4 4 +1.7V to 5.5V Power Supply 2.1 Serial Address/Data Input/Output (SDA) SDA is a bidirectional pin used to transfer addresses and data into and out of the device. Since it is an opendrain terminal, the SDA bus requires a pull-up resistor to VCC (typical 10 kΩ for 100 kHz, 2 kΩ for 400 kHz). For normal data transfer, SDA is allowed to change only during SCL low. Changes during SCL high are reserved for indicating Start and Stop conditions. 2.2 Serial Clock (SCL) 2.3 Write-Protect (WP) The WP pin must be connected to either VSS or VCC. If tied to VSS, normal memory operation is enabled (read/write the entire memory 00-FF). If tied to VCC, write operations are inhibited. The entire memory will be write-protected. Read operations are not affected. 2.4 A0, A1, A2 These A0, A1 and A2 pins are not used by the 24XX02. They may be left floating or tied to either VSS or VCC. The SCL input is used to synchronize the data transfer to and from the device. © 2009 Microchip Technology Inc. DS21709J-page 5 24AA02/24LC02B 3.0 FUNCTIONAL DESCRIPTION The 24XX02 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 24XX02 works as slave. Both master and slave can operate as transmitter or receiver, but the master device determines which mode is activated. 4.0 BUS CHARACTERISTICS The following bus protocol has been defined: • Data transfer may be initiated only when the bus is not busy. • During data transfer, the data line must remain stable whenever the clock line is high. Changes in the data line while the clock line is high will be interpreted as a Start or Stop condition. Accordingly, the following bus conditions have been defined (Figure 4-1). 4.1 Start Data Transfer (B) A high-to-low transition of the SDA line while the clock (SCL) is high determines a Start condition. All commands must be preceded by a Start condition. 4.3 Stop Data Transfer (C) A low-to-high transition of the SDA line while the clock (SCL) is high determines a Stop condition. All operations must be ended with a Stop condition. FIGURE 4-1: (A) Data Valid (D) The state of the data line represents valid data when, after a Start condition, the data line is stable for the duration of the high period of the clock signal. The data on the line must be changed during the low period of the clock signal. There is one clock pulse per bit of data. Each data transfer is initiated with a Start condition and terminated with a Stop condition. The number of data bytes transferred between Start and Stop conditions is determined by the master device and is, theoretically, unlimited (although only the last sixteen will be stored when doing a write operation). When an overwrite does occur, it will replace data in a first-in first-out (FIFO) fashion. 4.5 Acknowledge Each receiving device, when addressed, is obliged to generate an acknowledge after the reception of each byte. The master device must generate an extra clock pulse which is associated with this Acknowledge bit. Note: Bus Not Busy (A) Both data and clock lines remain high. 4.2 4.4 The 24XX02 does not generate any Acknowledge bits if an internal programming cycle is in progress. The device that acknowledges has to pull down the SDA line during the acknowledge clock pulse in such a way that the SDA line is stable-low during the high period of the acknowledge related clock pulse. Of course, setup and hold times must be taken into account. During reads, a master must signal an end of data to the slave by not generating an Acknowledge bit on the last byte that has been clocked out of the slave. In this case, the slave (24XX02) will leave the data line high to enable the master to generate the Stop condition. DATA TRANSFER SEQUENCE ON THE SERIAL BUS (B) (D) Start Condition Address or Acknowledge Valid (D) (C) (A) SCL SDA DS21709J-page 6 Data Allowed to Change Stop Condition © 2009 Microchip Technology Inc. 24AA02/24LC02B 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 four-bit control code. For the 24XX02, this is set as ‘1010’ binary for read and write operations. The next three bits of the control byte are “don’t cares” for the 24XX02. The last bit of the control byte defines the operation to be performed. When set to ‘1’, a read operation is selected. When set to ‘0’, a write operation is selected. Following the Start condition, the 24XX02 monitors the SDA bus, checking the device type identifier being transmitted and, upon a ‘1010’ code, the slave device outputs an Acknowledge signal on the SDA line. Depending on the state of the R/W bit, the 24XX02 will select a read or write operation. Operation Control Code Block Select R/W Read 1010 Block Address 1 Write 1010 Block Address 0 FIGURE 5-2: CONTROL BYTE ALLOCATION Read/Write Bit Block Select Bits Control Code S 1 0 1 0 x x x R/W ACK Slave Address Acknowledge Bit Start Bit x = “don’t care” ADDRESS SEQUENCE BIT ASSIGNMENTS Control Byte 1 0 1 0 Control Code x x Address Low Byte x R/W A 7 • • • • • • A 0 Block Select bits x = “don’t care” © 2009 Microchip Technology Inc. DS21709J-page 7 24AA02/24LC02B 6.0 WRITE OPERATION 6.1 Byte Write bits of the word address remain constant. If the master should transmit more than 8 words 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). Following the Start condition from the master, the device code (4 bits), the block address (3 bits, “don’t cares”) and the R/W bit which is a logic-low, is placed onto the bus by the master transmitter. This indicates to the addressed slave receiver that a byte with a word address will follow once it has generated an Acknowledge bit during the ninth clock cycle. Therefore, the next byte transmitted by the master is the word address and will be written into the Address Pointer of the 24XX02. After receiving another Acknowledge signal from the 24XX02, the master device will transmit the data word to be written into the addressed memory location. The 24XX02 acknowledges again and the master generates a Stop condition. This initiates the internal write cycle and, during this time, the 24XX02 will not generate Acknowledge signals (Figure 6-1). 6.2 Note: Page Write The write-control byte, word address and the first data byte are transmitted to the 24XX02 in the same way as in a byte write. However, instead of generating a Stop condition, the master transmits up to 8 data bytes to the 24XX02, which are temporarily stored in the on-chip page buffer and will be written into memory once the master has transmitted a Stop condition. Upon receipt of each word, the four lower-order Address Pointer bits are internally incremented by ‘1’. The higher-order 7 FIGURE 6-1: S T A R T SDA Line S Control Byte 1 0 1 0 x Bus Activity x x S T A R T SDA Line S 10 10 xx x0 DS21709J-page 8 S T O P Data 0 P A C K A C K A C K PAGE WRITE Bus Activity Master x = don’t care The WP pin allows the user to write-protect the entire array (00-FF) when the pin is tied to VCC. If tied to VSS, the write protection is disabled. Word Address Block Select Bits x = “don’t care” Bus Activity Write Protection BYTE WRITE Bus Activity Master FIGURE 6-2: 6.3 Page write operations are limited to writing bytes within a single physical page regardless of the number of bytes actually being written. Physical page boundaries start at addresses that are integer multiples of the page buffer size (or ‘page size’) and end at addresses that are integer multiples of [page size – 1]. If a page write command attempts to write across a physical page boundary, the result is that the data wraps around to the beginning of the current page (overwriting data previously stored there), instead of being written to the next page, as might be expected. It is therefore necessary for the application software to prevent page write operations that would attempt to cross a page boundary. Control Byte Block Select Bits Word Address (n) Data (n) S T O P Data (n + 7) Data (n + 1) P A C K A C K A C K A C K A C K © 2009 Microchip Technology Inc. 24AA02/24LC02B 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). If the device is still busy with the write cycle, no ACK will be returned. If the cycle is complete, the device will return the ACK and the master can then proceed with the next read or write command. See Figure 7-1 for a flow diagram of this operation. FIGURE 7-1: ACKNOWLEDGE POLLING FLOW Send Write Command Send Stop Condition to Initiate Write Cycle Send Start Send Control Byte with R/W = 0 Did Device Acknowledge (ACK = 0)? No Yes Next Operation © 2009 Microchip Technology Inc. DS21709J-page 9 24AA02/24LC02B 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. Sequential reads are initiated in the same way as a random read, except that once the 24XX02 transmits the first data byte, the master issues an acknowledge as opposed to a Stop condition in a random read. This directs the 24XX02 to transmit the next sequentiallyaddressed 8-bit word (Figure 8-3). 8.1 To provide sequential reads, the 24XX02 contains an internal Address Pointer that is incremented by one upon completion of each operation. This Address Pointer allows the entire memory contents to be serially read during one operation. Current Address Read The 24XX02 contains an address counter that maintains the address of the last word accessed, internally incremented by ‘1’. Therefore, if the previous access (either a read or write operation) was to address n, the next current address read operation would access data from address n + 1. Upon receipt of the slave address with R/W bit set to ‘1’, the 24XX02 issues an acknowledge and transmits the 8-bit data word. The master will not acknowledge the transfer, but does generate a Stop condition, and the 24XX02 discontinues transmission (Figure 8-1). 8.2 8.4 Noise Protection The 24XX02 employs a VCC threshold detector circuit which disables the internal erase/write logic if the VCC is below 1.5V at nominal conditions. The SCL and SDA inputs have Schmitt Trigger and filter circuits which suppress noise spikes to assure proper device operation, even on a noisy bus. Random Read Random read operations allow the master to access any memory location in a random manner. To perform this type of read operation, the word address must first be set. This is accomplished by sending the word address to the 24XX02 as part of a write operation. Once the word address is sent, the master generates a Start condition following the acknowledge. This terminates the write operation, but not before the internal Address Pointer is set. The master then issues the control byte again, but with the R/W bit set to a ‘1’. The 24XX02 will then issue an acknowledge and transmit the 8-bit data word. The master will not acknowledge the transfer, but does generate a Stop condition, and the 24XX02 will discontinue transmission (Figure 8-2). FIGURE 8-1: CURRENT ADDRESS READ Bus Activity Master S T A R T SDA Line S 1 Bus Activity x = “don’t care” DS21709J-page 10 Control Byte 0 1 0 x x S T O P Data (n) x Block Select Bits 1 P A C K N o A C K © 2009 Microchip Technology Inc. 24AA02/24LC02B FIGURE 8-2: RANDOM READ Bus Activity Master S T A R T S T A R T Word Address (n) Control Byte S 10 10x xx0 SDA Line Block Select Bits Bus Activity Control Byte S 1010x xx1 A C K A C K Block Select Bits P A C K Bus Activity Master SDA Line Bus Activity N o A C K x = “don’t care” FIGURE 8-3: S T O P Data (n) SEQUENTIAL READ Control Byte Data (n) Data (n + 1) Data (n + 2) S T O P Data (n + x) P 1 A C K A C K A C K A C K N o A C K © 2009 Microchip Technology Inc. DS21709J-page 11 24AA02/24LC02B 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 TSSOP Example: 24LC02BI SN e3 0527 13F Example: 4L02 TYWW I527 NNN 13F XXXXXT YWWNNN 5-Lead SOT-23 DS21709J-page 12 24LC02B I/P e3 13F 0527 XXXX 8-Lead MSOP XXNN Example: Example: 4L2BI 52713F Example: M23F © 2009 Microchip Technology Inc. 24AA02/24LC02B Example: 5-Lead SC-70 XXNN B43F 8-Lead 2x3 DFN Example: XXX YWW NN 224 527 13 8-Lead 2x3 TDFN Example: XXX YWW NN A24 527 13 1st Line Marking Codes Part Number SOT-23 TSSOP DFN TDFN SC-70 MSOP I Temp. E Temp. I Temp. E Temp. I Temp. E Temp. I Temp. E Temp. 24AA02 4A02 4A02T B2NN — 221 — A21 — B5NN — 24LC02B 4L02 4L2BT M2NN N2NN 224 225 A24 A25 B4NN B6NN Note: T = Temperature grade (I, E) NN = Alphanumeric traceability code Legend: XX...X T Y YY WW NNN e3 Note: 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. In the event the full Microchip part number cannot be marked on one line, it will be carried over to the next line, thus limiting the number of available characters for customer-specific information. Please visit www.microchip.com/Pbfree for the latest information on Pb-free conversion. *Standard OTP marking consists of Microchip part number, year code, week code, and traceability code. © 2009 Microchip Technology Inc. DS21709J-page 13 24AA02/24LC02B 3 &' !&"&4#*!(!!& 4%& &#& &&255***' '54 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: ; < & & & = = ##44!! - 1!& & = = "#& "#>#& . - - ##4>#& . < : 9& -< -? & & 9 - 9#4!! < ) ? ) < 1 = = 69#>#& 9 *9#>#& : *+ 1, - !"#$%&"' ()"&'"!&) &#*&&&# +%&,&!& - '! !#.# &"#' #%! &"! ! #%! &"! !! &$#/!# '! #& .0 1,21!'! &$& "! **& "&& ! * ,<1 DS21709J-page 14 © 2009 Microchip Technology Inc. 24AA02/24LC02B ! ""#$%& !' 3 &' !&"&4#*!(!!& 4%& &#& &&255***' '54 D e N E E1 NOTE 1 1 2 3 α h b h A2 A c φ L A1 L1 6&! '! 9'&! 7"') %! β 99.. 7 7 7: ; < & : 8& = 1, = ##44!! = = &# %%+ = : >#& . ##4>#& . -1, : 9& 1, ?1, ,'%@ & A = 3 &9& 9 = 3 && 9 .3 3 & I B = <B 9#4!! = 9#>#& ) - = #%& D B = B #%&1 && ' E B = B !"#$%&"' ()"&'"!&) &#*&&&# +%&,&!& - '! !#.# &"#' #%! &"! ! #%! &"! !! &$#''!# '! #& .0 1,2 1!'! &$& "! **& "&& ! .32 %'! ("!"*& "&& (% % '& " !! * ,1 © 2009 Microchip Technology Inc. DS21709J-page 15 24AA02/24LC02B ! ""#$%& !' 3 &' !&"&4#*!(!!& 4%& &#& &&255***' '54 DS21709J-page 16 © 2009 Microchip Technology Inc. 24AA02/24LC02B () )"* ! (+%+( ! 3 &' !&"&4#*!(!!& 4%& &#& &&255***' '54 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& = ?1, = ##44!! < &# %% = : >#& . ##4>#& . - ?1, ##49& - - 3 &9& 9 ? 3 && 9 .3 3 & I B = <B 9#4!! = 9#>#& ) = - !"#$%&"' ()"&'"!&) &#*&&&# '! !#.# &"#' #%! &"! ! #%! &"! !! &$#''!# - '! #& .0 1,2 1!'! &$& "! **& "&& ! .32 %'! ("!"*& "&& (% % '& " !! * ,<?1 © 2009 Microchip Technology Inc. DS21709J-page 17 24AA02/24LC02B ," ! *-, , ! 3 &' !&"&4#*!(!!& 4%& &#& &&255***' '54 D N E E1 NOTE 1 1 2 e b A2 A c φ L L1 A1 6&! '! 9'&! 7"') %! 99.. 7 7 7: ; < & : 8& = ?1, = ##44!! < &# %% = : >#& . ##4>#& . -1, : 9& -1, 3 &9& 9 3 && 9 1, ? < .3 3 & B = <B 9#4!! < = - 9#>#& ) = !"#$%&"' ()"&'"!&) &#*&&&# '! !#.# &"#' #%! &"! ! #%! &"! !! &$#''!# - '! #& .0 1,2 1!'! &$& "! **& "&& ! .32 %'! ("!"*& "&& (% % '& " !! * ,1 DS21709J-page 18 © 2009 Microchip Technology Inc. 24AA02/24LC02B . ! (""!( !(/ 3 &' !&"&4#*!(!!& 4%& &#& &&255***' '54 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& = ##44!! < = - &# %% = : >#& . = - ##4>#& . - = < : 9& = - 1, 3 &9& 9 = ? 3 && 9 - = < 3 & B = -B 9#4!! < = ? 9#>#& ) = '! !#.# &"#' #%! &"! ! #%! &"! !! &$#''!# '! #& .0 1,2 1!'! &$& "! **& "&& ! * ,1 © 2009 Microchip Technology Inc. DS21709J-page 19 24AA02/24LC02B . ! (""( '0 3 &' !&"&4#*!(!!& 4%& &#& &&255***' '54 D b 3 1 2 E1 E 4 e A e 5 A2 c A1 L 6&! '! 9'&! 7"') %! 99.. 7 7 7: ; & : 8& < ?1, = ##44!! < = &# %% = : >#& . < ##4>#& . - : 9& < 3 &9& 9 ? 9#4!! < = ? 9#>#& ) = '! !#.# &"#' #%! &"! ! #%! &"! !! &$#''!# '! #& .0 1,2 1!'! &$& "! **& "&& ! * ,?1 DS21709J-page 20 © 2009 Microchip Technology Inc. 24AA02/24LC02B 3 &' !&"&4#*!(!!& 4%& &#& &&255***' '54 © 2009 Microchip Technology Inc. DS21709J-page 21 24AA02/24LC02B 1 $*-,'/22%&1 3 &' !&"&4#*!(!!& 4%& &#& &&255***' '54 D e b N N L K E2 E EXPOSED PAD NOTE 1 2 1 NOTE 1 1 2 D2 BOTTOM VIEW TOP VIEW A A3 A1 NOTE 2 6&! '! 9'&! 7"') %! 99.. 7 7 7: ; < & : 8& < &# %% , &&4!! - .3 : 9& 1, : >#& . .$ !##9& - = .$ !##>#& . = ) - , &&9& 9 - , &&& .$ !## C = = , &&>#& 1, -1, !"#$%&"' ()"&'"!&) &#*&&&# 4' ' $ !#&)!&#! - 4!!*!"&# '! #& .0 1,2 1!'! &$& "! **& "&& ! .32 %'! ("!"*& "&& (% % '& " !! * ,-, DS21709J-page 22 © 2009 Microchip Technology Inc. 24AA02/24LC02B 1 $*-,'/22%&1 3 &' !&"&4#*!(!!& 4%& &#& &&255***' '54 © 2009 Microchip Technology Inc. DS21709J-page 23 24AA02/24LC02B 1 $*-,/22%0.(1 3 &' !&"&4#*!(!!& 4%& &#& &&255***' '54 DS21709J-page 24 © 2009 Microchip Technology Inc. 24AA02/24LC02B 1 $*-,/22%0.(1 3 &' !&"&4#*!(!!& 4%& &#& &&255***' '54 © 2009 Microchip Technology Inc. DS21709J-page 25 24AA02/24LC02B APPENDIX A: REVISION HISTORY Revision C Corrections to Section 1.0, Electrical Characteristics. Revision D Added DFN package. Revision E Revised Figure 3-2 Control Byte Allocation; Figure 4-1 Byte Write; Figure 4-2 Page Write; Section 6.0 Write Protection; Figure 7-1 Current Address Read; Figure 72 Random Read; Figure 7-3 Sequential Read. Revision F (01/2007) Revised Features section; Changed 1.8V to 1.7V in Tables and text; Revised Ambient Temperature, Section 1.0; Replaced Package Drawings; Revised Product ID section. Revision G (03/2007) Replaced Package Drawings (Rev. AM). Revision H (08/2008) Added SC-70 Package; Updated Package Drawings. Revision J (02/2009) Added TDFN Package; Updated Package Drawings. DS21709J-page 26 © 2009 Microchip Technology Inc. 24AA02/24LC02B 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. Accessible by using your favorite Internet browser, the web site contains the following information: Users of Microchip products can receive assistance through several channels: • Product Support – Data sheets and errata, application notes and sample programs, design resources, user’s guides and hardware support documents, latest software releases and archived software • General Technical Support – Frequently Asked Questions (FAQ), technical support requests, online discussion groups, Microchip consultant program member listing • Business of Microchip – Product selector and ordering guides, latest Microchip press releases, listing of seminars and events, listings of Microchip sales offices, distributors and factory representatives • • • • • Distributor or Representative Local Sales Office Field Application Engineer (FAE) Technical Support Development Systems Information Line Customers should contact their distributor, representative or field application engineer (FAE) for support. Local sales offices are also available to help customers. A listing of sales offices and locations is included in the back of this document. Technical support is available through the web site at: http://support.microchip.com CUSTOMER CHANGE NOTIFICATION SERVICE Microchip’s customer notification service helps keep customers current on Microchip products. Subscribers will receive e-mail notification whenever there are changes, updates, revisions or errata related to a specified product family or development tool of interest. To register, access the Microchip web site at www.microchip.com, click on Customer Change Notification and follow the registration instructions. © 2009 Microchip Technology Inc. DS21709J-page 27 24AA02/24LC02B 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. To: Technical Publications Manager RE: Reader Response Total Pages Sent ________ From: Name Company Address City / State / ZIP / Country Telephone: (_______) _________ - _________ FAX: (______) _________ - _________ Application (optional): Would you like a reply? Device: 24AA02/24LC02B Y N Literature Number: DS21709J Questions: 1. What are the best features of this document? 2. How does this document meet your hardware and software development needs? 3. Do you find the organization of this document easy to follow? If not, why? 4. What additions to the document do you think would enhance the structure and subject? 5. What deletions from the document could be made without affecting the overall usefulness? 6. Is there any incorrect or misleading information (what and where)? 7. How would you improve this document? DS21709J-page 28 © 2009 Microchip Technology Inc. 24AA02/24LC02B 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 X /XX Temperature Package Range Examples: a) b) Device: = 1.7V, 2 Kbit I2C Serial EEPROM = 1.7V, 2 Kbit I2C Serial EEPROM (Tape and Reel) 24LC02B: = 2.5V, 2 Kbit I2C Serial EEPROM 24LC02BT: = 2.5V, 2 Kbit I2C Serial EEPROM (Tape and Reel) 24AA02: 24AA02T: Temperature I Range: E Package: = -40°C to +85°C = -40°C to +125°C MC = P = SN = ST = MS = OT = LT = MNY(1)= c) d) e) f) 24AA02-I/P: Industrial Temperature, 1.7V, PDIP package 24AA02-I/SN: Industrial Temperature, 1.7V, SOIC package 24AA02T-I/OT: Industrial Temperature, 1.7V, SOT-23 package, tape and reel 24LC02B-I/P: Industrial Temperature, 2.5V, PDIP package 24LC02B-E/SN: Extended Temperature, 2.5V, SOIC package 24LC02BT-I/LT: Industrial Temperature, 2.5V, SC-70 package, tape and reel 2x3 DFN, 8-lead Plastic DIP (300 mil body), 8-lead Plastic SOIC (3.90 mm body), 8-lead Plastic TSSOP (4.4 mm), 8-lead Plastic Micro Small Outline (MSOP), 8-lead SOT-23, 5-lead (Tape and Reel only) SC-70, 5-lead (Tape and Reel only) TDFN, (2x3x0.75 mm body), 8-lead Note 1: "Y" indicates a Nickel Palladium Gold (NiPdAu) finish. © 2009 Microchip Technology Inc. DS21709J-page29 24AA02/24LC02B NOTES: DS21709J-page 30 © 2009 Microchip Technology Inc. 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. All of these methods, to our knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data Sheets. Most likely, the person doing so is engaged in theft of intellectual property. • Microchip is willing to work with the customer who is concerned about the integrity of their code. • Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as “unbreakable.” Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act. Information contained in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in life support and/or safety applications is entirely at the buyer’s risk, and the buyer agrees to defend, indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights. Trademarks The Microchip name and logo, the Microchip logo, Accuron, dsPIC, KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro, PICSTART, rfPIC, SmartShunt and UNI/O are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. FilterLab, Linear Active Thermistor, MXDEV, MXLAB, SEEVAL, SmartSensor and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A. Analog-for-the-Digital Age, Application Maestro, CodeGuard, dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN, ECONOMONITOR, FanSense, In-Circuit Serial Programming, ICSP, ICEPIC, Mindi, MiWi, MPASM, MPLAB Certified logo, MPLIB, MPLINK, mTouch, PICkit, PICDEM, PICDEM.net, PICtail, PIC32 logo, PowerCal, PowerInfo, PowerMate, PowerTool, REAL ICE, rfLAB, Select Mode, Total Endurance, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. © 2009, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. Microchip received ISO/TS-16949:2002 certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona; Gresham, Oregon and design centers in California and India. The Company’s quality system processes and procedures are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping devices, Serial EEPROMs, microperipherals, nonvolatile memory and analog products. In addition, Microchip’s quality system for the design and manufacture of development systems is ISO 9001:2000 certified. © 2009 Microchip Technology Inc. DS21709J-page 31 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://support.microchip.com Web Address: www.microchip.com Asia Pacific Office Suites 3707-14, 37th Floor Tower 6, The Gateway Harbour City, Kowloon Hong Kong Tel: 852-2401-1200 Fax: 852-2401-3431 India - Bangalore Tel: 91-80-3090-4444 Fax: 91-80-3090-4080 India - New Delhi Tel: 91-11-4160-8631 Fax: 91-11-4160-8632 Austria - Wels Tel: 43-7242-2244-39 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 India - Pune Tel: 91-20-2566-1512 Fax: 91-20-2566-1513 France - Paris Tel: 33-1-69-53-63-20 Fax: 33-1-69-30-90-79 Japan - Yokohama Tel: 81-45-471- 6166 Fax: 81-45-471-6122 Germany - Munich Tel: 49-89-627-144-0 Fax: 49-89-627-144-44 Atlanta Duluth, GA Tel: 678-957-9614 Fax: 678-957-1455 Boston Westborough, MA Tel: 774-760-0087 Fax: 774-760-0088 Chicago Itasca, IL Tel: 630-285-0071 Fax: 630-285-0075 Cleveland Independence, OH Tel: 216-447-0464 Fax: 216-447-0643 Dallas Addison, TX Tel: 972-818-7423 Fax: 972-818-2924 Detroit Farmington Hills, MI Tel: 248-538-2250 Fax: 248-538-2260 Kokomo Kokomo, IN Tel: 765-864-8360 Fax: 765-864-8387 Los Angeles Mission Viejo, CA Tel: 949-462-9523 Fax: 949-462-9608 Santa Clara Santa Clara, CA Tel: 408-961-6444 Fax: 408-961-6445 Toronto Mississauga, Ontario, Canada Tel: 905-673-0699 Fax: 905-673-6509 Australia - Sydney Tel: 61-2-9868-6733 Fax: 61-2-9868-6755 China - Beijing Tel: 86-10-8528-2100 Fax: 86-10-8528-2104 China - Chengdu Tel: 86-28-8665-5511 Fax: 86-28-8665-7889 Korea - Daegu Tel: 82-53-744-4301 Fax: 82-53-744-4302 China - Hong Kong SAR Tel: 852-2401-1200 Fax: 852-2401-3431 Korea - Seoul Tel: 82-2-554-7200 Fax: 82-2-558-5932 or 82-2-558-5934 China - Nanjing Tel: 86-25-8473-2460 Fax: 86-25-8473-2470 Malaysia - Kuala Lumpur Tel: 60-3-6201-9857 Fax: 60-3-6201-9859 China - Qingdao Tel: 86-532-8502-7355 Fax: 86-532-8502-7205 Malaysia - Penang Tel: 60-4-227-8870 Fax: 60-4-227-4068 China - Shanghai Tel: 86-21-5407-5533 Fax: 86-21-5407-5066 Philippines - Manila Tel: 63-2-634-9065 Fax: 63-2-634-9069 China - Shenyang Tel: 86-24-2334-2829 Fax: 86-24-2334-2393 Singapore Tel: 65-6334-8870 Fax: 65-6334-8850 China - Shenzhen Tel: 86-755-8203-2660 Fax: 86-755-8203-1760 Taiwan - Hsin Chu Tel: 886-3-572-9526 Fax: 886-3-572-6459 China - Wuhan Tel: 86-27-5980-5300 Fax: 86-27-5980-5118 Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 China - Xiamen Tel: 86-592-2388138 Fax: 86-592-2388130 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 China - Xian Tel: 86-29-8833-7252 Fax: 86-29-8833-7256 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 Italy - Milan Tel: 39-0331-742611 Fax: 39-0331-466781 Netherlands - Drunen Tel: 31-416-690399 Fax: 31-416-690340 Spain - Madrid Tel: 34-91-708-08-90 Fax: 34-91-708-08-91 UK - Wokingham Tel: 44-118-921-5869 Fax: 44-118-921-5820 China - Zhuhai Tel: 86-756-3210040 Fax: 86-756-3210049 02/04/09 DS21709J-page 32 © 2009 Microchip Technology Inc.