24AA512/24LC512/24FC512 512K I2C™ CMOS Serial EEPROM Description: VCC Range Max. Clock Frequency 24AA512 1.7-5.5V 400 kHz(1) I 24LC512 2.5-5.5V 400 kHz I, E 24FC512 1.7-5.5V 1 MHz(2) I Note 1: 2: Temp. Ranges 100 kHz for VCC < 2.5V 400 kHz for VCC < 2.5V Features: • Single Supply with Operation Down to 1.7V for 24AA512 and 24FC512 Devices, 2.5V for 24LC512 Devices • Low-Power CMOS Technology: - Active current 400 uA, typical - Standby current 100 nA, typical • 2-Wire Serial Interface, I2C™ Compatible • Cascadable for up to Eight Devices • 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 • 128-Byte Page Write Buffer • Hardware Write-Protect • ESD Protection >4000V • More than 1 Million Erase/Write Cycles • Data Retention > 200 years • Packages Include 8-lead PDIP, SOIJ and DFN • 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. 24AA512/24LC512/ 24FC512 (24XX512*) is a 64K x 8 (512 Kbit) Serial Electrically Erasable PROM, capable of operation across a broad voltage range (1.7V to 5.5V). It has been developed for advanced, low-power applications such as personal communications and data acquisition. This device also has a page write capability of up to 128 bytes of data. This device is capable of both random and sequential reads up to the 512K boundary. Functional address lines allow up to eight devices on the same bus, for up to 4 Mbit address space. This device is available in the standard 8-pin plastic DIP, SOIJ and DFN packages. Block Diagram A0 A1 A2 WP I/O Control Logic HV Generator Memory Control Logic EEPROM Array XDEC Page Latches SCL I/O YDEC SDA VCC Sense Amp. R/W Control VSS Package Type SOIJ PDIP A0 1 A1 2 A2 3 VSS 4 8 VCC A0 1 7 WP A1 2 6 SCL A2 3 5 SDA VSS 4 24XX512 Part Number 24XX512 Device Selection Table 8 VCC 7 WP 6 SCL 5 SDA DFN 1 A1 2 A2 3 VSS 4 8 VCC 24XX512 A0 7 WP 6 SCL 5 SDA * 24XX512 is used in this document as a generic part number for the 24AA512/24LC512/24FC512 devices. © 2008 Microchip Technology Inc. DS21754J-page 1 24AA512/24LC512/24FC512 1.0 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings (†) VCC .............................................................................................................................................................................6.5V All inputs and outputs w.r.t. VSS ......................................................................................................... -0.6V 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. D1 Sym. Characteristic Electrical Characteristics: Industrial (I): VCC = +1.7V to 5.5V Automotive (E): VCC = +2.5V to 5.5V Min. Max. Units — — — — A0, A1, A2, SCL, SDA and WP pins: — TA = -40°C to +85°C TA = -40°C to +125°C Conditions D2 VIH High-level input voltage 0.7 VCC — V — D3 VIL Low-level input voltage — 0.3 VCC 0.2 VCC V V VCC ≥ 2.5V VCC < 2.5V D4 VHYS Hysteresis of Schmitt Trigger inputs (SDA, SCL pins) 0.05 VCC — V VCC ≥ 2.5V (Note) D5 VOL Low-level output voltage — 0.40 V IOL = 3.0 ma @ VCC = 4.5V IOL = 2.1 ma @ VCC = 2.5V D6 ILI Input leakage current — ±1 μA VIN = VSS or VCC, WP = VSS VIN = VSS or VCC, WP = VCC D7 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 Read Operating current — 400 μA VCC = 5.5V, SCL = 400 kHz ICC Write — 5 mA VCC = 5.5V — 1 μA TA = -40°C to +85°C SCL = SDA = VCC = 5.5V A0, A1, A2, WP = VSS — 5 μA TA = -40°C to +125°C SCL = SDA = VCC = 5.5V A0, A1, A2, WP = VSS D10 Note: ICCS Standby current This parameter is periodically sampled and not 100% tested. DS21754J-page 2 © 2008 Microchip Technology Inc. 24AA512/24LC512/24FC512 TABLE 1-2: AC CHARACTERISTICS Electrical Characteristics: Industrial (I): VCC = +1.7V to 5.5V Automotive (E): VCC = +2.5V to 5.5V AC CHARACTERISTICS Param. No. Sym. Characteristic Min. Max. Units TA = -40°C to +85°C TA = -40°C to +125°C Conditions 1 FCLK Clock frequency — — — — 100 400 400 1000 kHz 1.7V ≤ VCC < 2.5V 2.5V ≤ VCC ≤ 5.5V 1.7V ≤ VCC < 2.5V 24FC512 2.5V ≤ VCC ≤ 5.5V 24FC512 2 THIGH Clock high time 4000 600 600 500 — — — — ns 1.7V ≤ VCC < 2.5V 2.5V ≤ VCC ≤ 5.5V 1.7V ≤ VCC < 2.5V 24FC512 2.5V ≤ VCC ≤ 5.5V 24FC512 3 TLOW Clock low time 4700 1300 1300 500 — — — — ns 1.7V ≤ VCC < 2.5V 2.5V ≤ VCC ≤ 5.5V 1.7V ≤ VCC < 2.5V 24FC512 2.5V ≤ VCC ≤ 5.5V 24FC512 4 TR SDA and SCL rise time (Note 1) — — — 1000 300 300 ns 1.7V ≤ VCC< 2.5V 2.5V ≤ VCC ≤ 5.5V 1.7V ≤ VCC ≤ 5.5V 24FC512 5 TF SDA and SCL fall time (Note 1) — — 300 100 ns All except, 24FC512 1.7V ≤ VCC ≤ 5.5V 24FC512 6 THD:STA Start condition hold time 4000 600 600 250 — — — — ns 1.7V ≤ VCC < 2.5V 2.5V ≤ VCC ≤ 5.5V 1.7V ≤ VCC < 2.5V 24FC512 2.5V ≤ VCC ≤ 5.5V 24FC512 7 TSU:STA 4700 600 600 250 — — — — ns 1.7V ≤ VCC < 2.5V 2.5V ≤ VCC ≤ 5.5V 1.7V ≤ VCC < 2.5V 24FC512 2.5V ≤ VCC ≤ 5.5V 24FC512 8 THD:DAT Data input hold time 0 — ns (Note 2) 9 TSU:DAT 250 100 100 — — — ns 1.7V ≤ VCC < 2.5V 2.5V ≤ VCC ≤ 5.5V 1.7V ≤ VCC ≤ 5.5V 24FC512 10 TSU:STO Stop condition setup time 4000 600 600 250 — — — — ns 1.7V ≤ VCC < 2.5V 2.5V ≤ VCC ≤ 5.5V 1.7V ≤ VCC < 2.5V 24FC512 2.5V ≤ VCC ≤ 5.5V 24FC512 11 TSU:WP WP setup time 4000 600 600 — — — ns 1.7V ≤ VCC < 2.5V 2.5V ≤ VCC ≤ 5.5V 1.7V ≤ VCC ≤ 5.5V 24FC512 12 THD:WP WP hold time 4700 1300 1300 — — — ns 1.7V ≤ VCC < 2.5V 2.5V ≤ VCC ≤ 5.5V 1.7V ≤ VCC ≤ 5.5V 24FC512 13 TAA Output valid from clock (Note 2) — — — — 3500 900 900 400 ns 1.7V ≤ VCC < 2.5V 2.5V ≤ VCC ≤ 5.5V 1.7V ≤ VCC < 2.5V 24FC512 2.5V ≤ VCC ≤ 5.5V 24FC512 14 TBUF Bus free time: Time the bus must be free before a new transmission can start 4700 1300 1300 500 — — — — ns 1.7V ≤ VCC < 2.5V 2.5V ≤ VCC ≤ 5.5V 1.7V ≤ VCC < 2.5V 24FC512 2.5V ≤ VCC ≤ 5.5V 24FC512 Note 1: 2: 3: 4: Start condition setup time Data input setup time 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. © 2008 Microchip Technology Inc. DS21754J-page 3 24AA512/24LC512/24FC512 AC CHARACTERISTICS (Continued) Param. No. Sym. Characteristic 16 TSP Input filter spike suppression (SDA and SCL pins) 17 TWC Write cycle time (byte or page) 18 — Endurance Note 1: 2: 3: 4: Electrical Characteristics: Industrial (I): VCC = +1.7V to 5.5V Automotive (E): VCC = +2.5V to 5.5V TA = -40°C to +85°C TA = -40°C to +125°C Min. Max. Units — 50 ns All except, 24FC512 (Notes 1 and 3) — — 5 ms 1,000,000 — cycles Conditions 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. DS21754J-page 4 © 2008 Microchip Technology Inc. 24AA512/24LC512/24FC512 FIGURE 1-1: BUS TIMING DATA 5 SCL SDA IN 7 3 4 D4 2 8 10 9 6 16 14 13 SDA OUT WP © 2008 Microchip Technology Inc. (protected) (unprotected) 11 12 DS21754J-page 5 24AA512/24LC512/24FC512 2.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 2-1. TABLE 2-1: 2.1 PIN FUNCTION TABLE Name PDIP SOIJ DFN A0 1 1 1 A1 2 2 2 User Configured Chip Select (NC) — — — Not Connected A2 3 3 3 User Configured Chip Select VSS 4 4 4 Ground SDA 5 5 5 Serial Data SCL 6 6 6 Serial Clock (NC) — — — Not Connected WP 7 7 7 Write-Protect Input VCC 8 8 8 +1.7V to 5.5V (24AA512) +2.5V to 5.5V (24LC512) +1.7V to 5.5V (24FC512) A0, A1 and A2 Chip Address Inputs The A0, A1 and A2 inputs are used by the 24XX512 for multiple device operations. The logic levels on these inputs are compared with the corresponding bits in the slave address. The chip is selected if the compare is true. Up to eight devices may be connected to the same bus by using different Chip Select bit combinations. These inputs must be connected to either VCC or VSS. In most applications, the chip address inputs A0, A1 and A2 are hard-wired to logic ‘0’ or logic ‘1’. For applications in which these pins are controlled by a microcontroller or other programmable logic device, the chip address pins must be driven to logic ‘0’ or logic ‘1’ before normal device operation can proceed. 2.2 Function User Configured Chip Select Serial Data (SDA) This is a bidirectional pin used to transfer addresses and data into and data out of the device. It is an opendrain terminal, therefore, the SDA bus requires a pullup resistor to VCC (typical 10 kΩ for 100 kHz, 2 kΩ for 400 kHz and 1 MHz). 2.3 Serial Clock (SCL) This input is used to synchronize the data transfer from and to the device. 2.4 Write-Protect (WP) This pin must be connected to either VSS or VCC. If tied to VSS, write operations are enabled. If tied to VCC, write operations are inhibited but read operations are not affected. 3.0 FUNCTIONAL DESCRIPTION The 24XX512 supports a bidirectional 2-wire bus and data transmission protocol. A device that sends data onto the bus is defined as a transmitter and a device receiving data as a receiver. The bus must 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 24XX512 works as a slave. Both master and slave can operate as a transmitter or receiver, but the master device determines which mode is activated. For normal data transfer, SDA is allowed to change only during SCL low. Changes during SCL high are reserved for indicating the Start and Stop conditions. DS21754J-page 6 © 2008 Microchip Technology Inc. 24AA512/24LC512/24FC512 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 Bus Not Busy (A) Both data and clock lines remain high. 4.2 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 4.5 Acknowledge Each receiving device, when addressed, is obliged to generate an Acknowledge signal after the reception of each byte. The master device must generate an extra clock pulse which is associated with this Acknowledge bit. See Figure 4-2 for acknowledge timing. Note: The 24XX512 does not generate any Acknowledge bits if an internal programming cycle is in progress. A device that acknowledges must 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 (24XX512) will leave the data line high to enable the master to generate the Stop condition. 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 end with a Stop condition. 4.4 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 bit of data per clock pulse. Each data transfer is initiated with a Start condition and terminated with a Stop condition. The number of the data bytes transferred between the Start and Stop conditions is determined by the master device. © 2008 Microchip Technology Inc. DS21754J-page 7 24AA512/24LC512/24FC512 FIGURE 4-1: (A) DATA TRANSFER SEQUENCE ON THE SERIAL BUS (B) (D) Start Condition Address or Acknowledge Valid (D) (C) (A) SCL SDA FIGURE 4-2: Data Allowed to Change Stop Condition ACKNOWLEDGE TIMING Acknowledge Bit 1 SCL SDA 2 3 4 5 6 7 Data from transmitter Transmitter must release the SDA line at this point allowing the Receiver to pull the SDA line low to acknowledge the previous eight bits of data. DS21754J-page 8 8 9 1 2 3 Data from transmitter Receiver must release the SDA line at this point so the Transmitter can continue sending data. © 2008 Microchip Technology Inc. 24AA512/24LC512/24FC512 5.0 DEVICE ADDRESSING FIGURE 5-1: 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 4-bit control code; for the 24XX512 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 and A0). The Chip Select bits allow the use of up to eight 24XX512 devices on the same bus and are used to select which device is accessed. The Chip Select bits in the control byte must correspond to the logic levels on the corresponding A2, A1 and A0 pins for the device to respond. These bits are in effect the three Most Significant bits of the word address. The last bit of the control byte defines the operation to be performed. When set to a one a read operation is selected and when set to a zero a write operation is selected. The next two bytes received define the address of the first data byte (Figure 5-2). Because all A15…A0 are used, there are no upper address bits that are “don’t care”. The upper address bits are transferred first, followed by the Less Significant bits. Following the Start condition, the 24XX512 monitors the SDA bus checking the device type identifier being transmitted. Upon receiving a ‘1010’ code and appropriate device select bits, the slave device outputs an Acknowledge signal on the SDA line. Depending on the state of the R/W bit, the 24XX512 will select a read or write operation. FIGURE 5-2: 0 1 Control Code Read/Write Bit Chip Select Bits Control Code S 1 1 0 A2 0 A1 A0 R/W ACK Slave Address Start Bit 5.1 Acknowledge Bit Contiguous Addressing Across Multiple Devices The Chip Select bits A2, A1 and A0 can be used to expand the contiguous address space for up to 4 Mbit by adding up to eight 24XX512 devices on the same bus. In this case, software can use A0 of the control byte as address bit A16; A1 as address bit A17; and A2 as address bit A18. It is not possible to sequentially read across device boundaries. ADDRESS SEQUENCE BIT ASSIGNMENTS Control Byte 1 CONTROL BYTE FORMAT 0 A 2 A 1 Address High Byte A 0 R/W A A A A A A 15 14 13 12 11 10 A 9 Address Low Byte A 8 A 7 • • • • • • A 0 Chip Select Bits © 2008 Microchip Technology Inc. DS21754J-page 9 24AA512/24LC512/24FC512 6.0 WRITE OPERATIONS 6.1 Byte Write Following the Start condition from the master, the control code (four bits), the Chip Select (three 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 after it has generated an Acknowledge bit during the ninth clock cycle. Therefore, the next byte transmitted by the master is the high-order byte of the word address and will be written into the Address Pointer of the 24XX512. The next byte is the Least Significant Address Byte. After receiving another Acknowledge signal from the 24XX512, the master device will transmit the data word to be written into the addressed memory location. The 24XX512 acknowledges again and the master generates a Stop condition. This initiates the internal write cycle and during this time, the 24XX512 will not generate Acknowledge signals (Figure 6-1). If an attempt is made to write to the array with the WP pin held high, the device will acknowledge the command, but no write cycle will occur, no data will be written and the device will immediately accept a new command. After a byte Write command, the internal address counter will point to the address location following the one that was just written. 6.2 6.3 Write Protection The WP pin allows the user to write-protect the entire array (0000-FFFF) when the pin is tied to VCC. If tied to VSS the write protection is disabled. The WP pin is sampled at the Stop bit for every Write command (Figure 1-1). Toggling the WP pin after the Stop bit will have no effect on the execution of the write cycle. Note: 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. Page Write The write control byte, word address and the first data byte are transmitted to the 24XX512 in the same way as in a byte write. But instead of generating a Stop condition, the master transmits up to 127 additional bytes, which are temporarily stored in the on-chip page buffer and will be written into memory after the master has transmitted a Stop condition. After receipt of each word, the seven lower Address Pointer bits are internally incremented by one. If the master should transmit more than 128 bytes 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). If an attempt is made to write to the array with the WP pin held high, the device will acknowledge the command, but no write cycle will occur, no data will be written and the device will immediately accept a new command. DS21754J-page 10 © 2008 Microchip Technology Inc. 24AA512/24LC512/24FC512 FIGURE 6-1: BYTE WRITE S T A R T Bus Activity Master Control Byte Address Low Byte S T O P Data AA S1 01 0A 2 10 0 SDA Line P A C K Bus Activity FIGURE 6-2: Address High Byte A C K A C K A C K PAGE WRITE Bus Activity Master S T A R T SDA Line AAA S101 02 1 00 Control Byte Bus Activity © 2008 Microchip Technology Inc. Address High Byte Address Low Byte Data Byte 0 S T O P Data Byte 127 P A C K A C K A C K A C K A C K DS21754J-page 11 24AA512/24LC512/24FC512 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 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, then no ACK will be returned. If no ACK is returned, then the Start bit and control byte must be re-sent. If the cycle is complete, then the device will return the ACK and the master can then proceed with the next Read or Write command. See Figure 7-1 for flow diagram. 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 DS21754J-page 12 © 2008 Microchip Technology Inc. 24AA512/24LC512/24FC512 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 24XX512 contains an address counter that maintains the address of the last word accessed, internally incremented by ‘1’. Therefore, if the previous read access was to address ‘n’ (n is any legal address), the next current address read operation would access data from address n + 1. Upon receipt of the control byte with R/W bit set to ‘1’, the 24XX512 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 24XX512 discontinues transmission (Figure 8-1). FIGURE 8-1: Sequential reads are initiated in the same way as a random read except that after the 24XX512 transmits the first data byte, the master issues an acknowledge as opposed to the Stop condition used in a random read. This acknowledge directs the 24XX512 to transmit the next sequentially addressed 8-bit word (Figure 8-3). Following the final byte transmitted to the master, the master will NOT generate an acknowledge, but will generate a Stop condition. To provide sequential reads, the 24XX512 contains an internal Address Pointer which is incremented by one at the completion of each operation. This Address Pointer allows the entire memory contents to be serially read during one operation. The internal Address Pointer will automatically roll over from address FFFF to address 0000 if the master acknowledges the byte received from the array address FFFF. CURRENT ADDRESS READ Bus Activity Master S T A R T SDA Line S 1 0 1 0 A AA 1 2 1 0 Control Byte Bus Activity 8.2 Sequential Read S T O P Data Byte P A C K N O A C K Random Read Random read operations allow the master to access any memory location in a random manner. To perform this type of read operation, first the word address must be set. This is done by sending the word address to the 24XX512 as part of a write operation (R/W bit set to ‘0’). After 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. Then, the master issues the control byte again but with the R/W bit set to a one. The 24XX512 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 which causes the 24XX512 to discontinue transmission (Figure 8-2). After a random Read command, the internal address counter will point to the address location following the one that was just read. © 2008 Microchip Technology Inc. DS21754J-page 13 24AA512/24LC512/24FC512 FIGURE 8-2: Bus Activity Master SDA Line RANDOM READ S T A R T Control Byte Address High Byte S T A R T Address Low Byte S1 01 0 AAA0 2 1 0 S T O P Data Byte S 1 0 1 0 A A A1 2 1 0 A C K Bus Activity Control Byte A C K A C K Data (n + 1) Data (n + 2) P N O A C K A C K x = “don’t care” bit FIGURE 8-3: Bus Activity Master SEQUENTIAL READ Control Byte Data (n) S T O P Data (n + x) P SDA Line Bus Activity DS21754J-page 14 A C K A C K A C K A C K N O A C K © 2008 Microchip Technology Inc. 24AA512/24LC512/24FC512 9.0 PACKAGING INFORMATION 9.1 Package Marking Information 8-Lead PDIP (300 mil) 24AA512 I/P e3 017 0510 XXXXXXXX T/XXXNNN YYWW 8-Lead SOIJ (5.28 mm) XXXXXXXX T/XXXXXX YYWWNNN 8-Lead DFN-S XXXXXXX T/XXXXX YYWW NNN Legend: XX...X Y YY WW NNN e3 * T Blank I E Note: Example: Example: 24LC512 I/SM e3 0510017 Example: 24LC512 I/MF e3 0510 017 Customer-specific information* 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 Pb-free JEDEC designator for Matte Tin (Sn) This package is Pb-free. The Pb-free JEDEC designator ( e3 ) can be found on the outer packaging for this package. Temperature Commercial Industrial Extended 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. *Standard device marking consists of Microchip part number, year code, week code, and traceability code. For device marking beyond this, certain price adders apply. Please check with your Microchip Sales Office. © 2008 Microchip Technology Inc. DS21754J-page 15 24AA512/24LC512/24FC512 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!'! &$& "! **& "&& ! * ,<1 DS21754J-page 16 © 2008 Microchip Technology Inc. 24AA512/24LC512/24FC512 ! ""#$%& !' 3 &' !&"&4#*!(!!& 4%& &#& &&255***' '54 D N E E1 1 2 e b α c φ A2 A β A1 6&! '! 9'&! 7"') %! L 99.. 7 7 7: ; < & : 8& 1, = ##44!! = < &# %%+ = : >#& . ? = <? ##4>#& . = -< : 9& - = -- 3 &9& 9 = ? 3 & I A = <A 9#4!! = 9#>#& ) -? = #%& D = = A #%&1 && ' E = = A - :@(@[email protected]&##(% '#:, +%&,&!& - '! !#.# &"#' #%! &"! ! #%! &"! !! &$#''!# * ,?1 © 2008 Microchip Technology Inc. DS21754J-page 17 24AA512/24LC512/24FC512 Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS21754J-page 18 © 2008 Microchip Technology Inc. 24AA512/24LC512/24FC512 ( #)*"(+,$( 3 &' !&"&4#*!(!!& 4%& &#& &&255***' '54 e D L b N N K E E2 EXPOSED PAD NOTE 1 1 2 2 NOTE 1 1 D2 BOTTOM VIEW TOP VIEW A A3 A1 NOTE 2 6&! '! 9'&! 7"') %! 99.. 7 7 7: ; < & : 8& < 1, < &# %% , &&4!! - .3 : 9& 1, : >#& . .$ !##9& - .$ !##>#& . - , &&>#& ) - < , &&9& 9 ? ?1, , &&& .$ !## B = !"#$%&"' ()"&'"!&) &#*&&&# 4' ' $ !#&)!&#! - 4!!*!"&# '! #& .0 1,2 1!'! &$& "! **& "&& ! .32 %'! ("!"*& "&& (% % '& " !! = * ,1 © 2008 Microchip Technology Inc. DS21754J-page 19 24AA512/24LC512/24FC512 3 &' !&"&4#*!(!!& 4%& &#& &&255***' '54 DS21754J-page 20 © 2008 Microchip Technology Inc. 24AA512/24LC512/24FC512 APPENDIX A: REVISION HISTORY Revision D Correction to Section 1.0, Electrical Characteristics. Revision E Correction to Section 1.0., Ambient Temperature Correction to Section 6.2, Page Write Revision F Add E3 (Pb-free) to marking examples. Updated Marking Legend and On-line Support. Revision G Revised Sections 2.1, 2.4 and 6.3. Revision H Revised Features section; Revised 1.8V voltage to 1.7V; Replaced Package Drawings; Revised Product ID System; Removed 14 Lead TSSOP. Revision J Revised Table 1-2, AC Characteristics; Updated Packaging. © 2008 Microchip Technology Inc. DS21754J-page 21 24AA512/24LC512/24FC512 NOTES: DS21754J-page 22 © 2008 Microchip Technology Inc. 24AA512/24LC512/24FC512 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. © 2008 Microchip Technology Inc. DS21754J-page 23 24AA512/24LC512/24FC512 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? Y N Device: 24AA512/24LC512/24FC512 Literature Number: DS21754J 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? DS21754J-page 24 © 2008 Microchip Technology Inc. 24AA512/24LC512/24FC512 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 Device Device: /XX Temperature Range 24AA512: 24AA512T: 24LC512: 24LC512T: 24FC512: 24FC512T: Temperature Range: I E Package: P SM MF = = Package 512 Kbit 1.8V I2C Serial EEPROM 512 Kbit 1.8V I2C Serial EEPROM (Tape and Reel) 512 Kbit 2.5V I2C Serial EEPROM 512 Kbit 2.5V I2C Serial EEPROM (Tape and Reel) 512 Kbit 1 MHz I2C Serial EEPROM 512 Kbit 1 MHz I2C Serial EEPROM (Tape and Reel) -40°C to +85°C -40°C to +125°C = Plastic DIP (300 mil body), 8-lead = Plastic SOIJ (5.28 mm body), 8-lead = Micro Lead Frame (6x5 mm body), 8-lead © 2008 Microchip Technology Inc. Examples: a) 24AA512-I/P: Industrial Temp., 1.7V, PDIP package. b) 24AA512T-I/SM: Tape and Reel, Industrial Temp., 1.7V, SOIJ package. c) 24AA512-I/MF: Industrial Temp., 1.7V, DFN package. d) 24LC512-E/P: Extended Temp., 2.5V, PDIP package. e) 24LC512-I/SM: Industrial Temp., 2.5V, SOIJ package. f) 24LC512T-I/SM: Tape and Reel, Industrial Temp., 2.5V, SOIJ package. g) 24LC512-I/MF: Industrial Temp., 2.5V, DFN package. h) 24FC512-I/P: Industrial Temp., 1.7V, High Speed, PDIP package. i) 24FC512-I/SM: Industrial Temp., 1.7V, High Speed, SOIJ package. j) 24FC512T-I/SM: Tape and Reel, Industrial Temp., 1.7V, High Speed, SOIJ package. DS21754J-page25 24AA512/24LC512/24FC512 NOTES: DS21754J-page26 © 2008 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, PRO MATE, rfPIC and SmartShunt 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, UNI/O, 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. © 2008, 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. © 2008 Microchip Technology Inc. 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