AT24C01C, AT24C02C, AT24C04C, AT24C08C 2-wire Automotive Temperature Serial EEPROMs 1K (128 x 8), 2K (256 x 8), 4K (512 x 8), 8K (1,024 x 8) DATASHEET Features Medium-voltage and Standard-voltage Operation ̶ 2.5 (VCC = 2.5V to 5.5V) Automotive Temperature Range -40C to +125C Internally Organized 128 x 8 (1K), 256 x 8 (2K), 512 x 8 (4K), or 1,024 x 8 (8K) 2-wire Serial Interface Schmitt Trigger, Filtered Inputs for Noise Suppression Bidirectional Data Transfer Protocol 400kHz (2.5V) Compatibility Write Protect Pin for Hardware Data Protection 8-byte Page (1K, 2K) or 16-byte Page (4K, 8K) Write Modes Partial Page Writes are allowed Self-timed Write Cycle (5ms Max) High Reliability ̶ ̶ Endurance: 1,000,000 Write Cycles Data Retention: 100 Years 8-lead JEDEC SOIC and 8-lead TSSOP packages Description The Atmel® AT24C01C/02C/04C/08C provides 1,024/2,048/4,096/8,192 bits of Serial Electrically Erasable and Programmable Read-Only Memory (EEPROM) organized as 128/256/512/1,024 words of eight bits each. The device is optimized for use in many automotive applications where low-power and low-voltage operation are essential. AT24C01C/02C/04C/08C is available in space-saving 8-lead JEDEC SOIC and 8-lead TSSOP packages and is accessed via a 2-wire serial interface. In addition, the entire family is available in 2.5V (2.5V to 5.5V) versions. Atmel-8819B-SEEPROM-AT24C01C-02C-04C-08C-Auto-Datasheet_072014 1. Pin Configurations and Pinouts Table 1-1. Pin Name 2. Pin Configurations Function A0 Address Input (1K and 2K) A1 Address Input (1K, 2K, and 4K) A2 Address Input (1K, 2K, 4K, and 8K) GND Ground SDA Serial Data SCL Serial Clock Input WP Write Protect VCC Device Power Supply 8-lead TSSOP (Top View) (Top View) A0 1 8 VCC A1 2 7 WP A0 A1 A2 GND A2 3 6 SCL GND 4 5 SDA Note: Drawings are not to scale. 1 2 3 4 8 7 6 5 VCC WP SCL SDA Absolute Maximum Ratings* Operating Temperature . . . . . . . . . . .-55C to +125C Storage Temperature . . . . . . . . . . . . .-65C to +150C Voltage on Any Pin With Respect to Ground . . . . . . . . . . .-1.00V to +7.00V Maximum Operating Voltage . . . . . . . . . . . . . . . 6.25V DC Output Current . . . . . . . . . . . . . . . . . . . . . . .5.0mA 2 8-lead SOIC AT24C01C/02C/04C/08C Automotive [DATASHEET] Atmel-8819B-SEEPROM-AT24C01C-02C-04C-08C-Auto-Datasheet_072014 *Notice: Stresses beyond 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 these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Block Diagram VCC GND WP Start Stop Logic SCL SDA Serial Control Logic LOAD Device Address Comparator A2 A1 A0 R/W EN H.V. Pump/Timing COMP Data Recovery LOAD Data Word ADDR/Counter Y DEC INC X DEC 3. EEPROM Serial MUX DOUT/ACK Logic DIN DOUT AT24C01C/02C/04C/08C Automotive [DATASHEET] Atmel-8819B-SEEPROM-AT24C01C-02C-04C-08C-Auto-Datasheet_072014 3 4. Pin Description Serial Clock (SCL): The SCL input is used to positive edge clock data into each EEPROM device and negative edge clock data out of each device. Serial Data (SDA): The SDA pin is bi-directional for serial data transfer. This pin is open-drain driven and may be wire-ORed with any number of other open-drain or open-collector devices. Device/Page Addresses (A2, A1, A0): The A2, A1, and A0 pins are device address inputs that are hard wired for the AT24C01C/02C/04C/08C. As many as eight 1K/2K devices may be addressed on a single bus system (device addressing is discussed in detail in Section 6. “Device Operation”). The AT24C04C uses the A2 and A1 inputs for hardwire addressing and a total of four 4K devices may be addressed on a single bus system. The A0 pin is a no connect. The AT24C08C only uses the A2 input for hardwire addressing and a total of two 8K devices may be addressed on a single bus system. The A0 and A1 pins are no connect. Write Protect (WP): AT24C01C/02C/04C/08C has a Write Protect pin that provides hardware data protection. The Write Protect pin allows normal read/write operations when connected to ground (GND). When the Write Protect pin is connected to VCC, the write protection feature is enabled and operates as shown in the following table. Figure 4-1. 4 Write Protect WP Pin Status Part of the Array Protected At VCC Full Array At GND Normal Read/Write Operations AT24C01C/02C/04C/08C Automotive [DATASHEET] Atmel-8819B-SEEPROM-AT24C01C-02C-04C-08C-Auto-Datasheet_072014 5. Memory Organization AT24C01C, 1K Serial EEPROM: Internally organized with 16 pages of 8 bytes each, the 1K requires a 7-bit data word address for random word addressing. AT24C02C, 2K Serial EEPROM: Internally organized with 32 pages of 8 bytes each, the 2K requires an 8-bit data word address for random word addressing. AT24C04C, 4K Serial EEPROM: Internally organized with 32 pages of 16 bytes each, the 4K requires a 9-bit data word address for random word addressing. AT24C08C, 8K Serial EEPROM: Internally organized with 64 pages of 16 bytes each, the 8K requires a 10-bit data word address for random word addressing. Table 5-1. Pin Capacitance(1) Applicable over recommended operating range from TA = 25C, f = 400KHz, VCC = 2.5V. Symbol Test Condition CI/O CIN Note: 1. Table 5-2. Max Units Conditions Input/Output Capacitance (SDA) 8 pF VI/O = 0V Input Capacitance (A0, A1, A2, SCL) 6 pF VIN = 0V This parameter is characterized and is not 100% tested. DC Characteristics Applicable over recommended operating range from: TA = 40C to +125C, VCC = 2.5V to 5.5V (unless otherwise noted). Symbol Parameter Max Units VCC1 Supply Voltage 5.5 V ICC Supply Current VCC = 5.0V Read at 100kHz 0.4 1.0 mA ICC Supply Current VCC = 5.0V Write at 100kHz 2.0 3.0 mA ISB1 Standby Current VCC = 2.5V VIN = VCC or VSS 1.6 4.0 μA ISB2 Standby Current VCC = 5.0V VIN = VCC or VSS 4.0 6.0 μA ILI Input Leakage Current VIN = VCC or VSS 0.10 3.0 μA ILO Output Leakage Current VOUT = VCC or VSS 0.05 3.0 μA VIL Input Low Level(1) 0.6 VCC x 0.3 V VIH Input High Level(1) VCC x 0.7 VCC + 0.5 V VOL Output Low Level VCC = 2.5V 0.4 V Note: 1. Test Condition Min Typ 2.5 IOL = 3.0mA VIL min and VIH max are reference only and are not tested. AT24C01C/02C/04C/08C Automotive [DATASHEET] Atmel-8819B-SEEPROM-AT24C01C-02C-04C-08C-Auto-Datasheet_072014 5 Table 5-3. AC Characteristics Applicable over recommended operating range from TA = 40C to 125C, VCC = 2.5V to 5.5V, CL = 1 TTL Gate and 100pF (unless otherwise noted). Symbol Parameter fSCL Clock Frequency, SCL tLOW Clock Pulse Width Low 1200 ns tHIGH Clock Pulse Width High 600 ns tI Noise Suppression Time(1) tAA Clock Low to Data Out Valid 100 tBUF Time the bus must be free before a new transmission can start(2) 1200 ns tHD.STA Start Hold Time 600 ns tSU.STA Start Set-up Time 600 ns tHD.DAT Data In Hold Time 0 ns tSU.DAT Data In Set-up Time 100 ns (2) Max Units 400 kHz 50 ns 900 ns tR Inputs Rise Time tF Inputs Fall Time(2) tSU.STO Stop Set-up Time 600 ns tDH Data Out Hold Time 50 ns tWR Write Cycle Time Endurance(2) 5.0V, 25C, Page Mode Notes: 6 Min 1. 2. This parameter is characterized and is not 100% tested (TA = 25C). This parameter is characterized only. AT24C01C/02C/04C/08C Automotive [DATASHEET] Atmel-8819B-SEEPROM-AT24C01C-02C-04C-08C-Auto-Datasheet_072014 300 ns 300 ns 5 1,000,000 ms Write Cycles 6. Device Operation Clock and Data Transitions: The SDA pin is normally pulled high with an external device. Data on the SDA pin may change only during SCL low time periods. Data changes during SCL high periods will indicate a Start or Stop condition as defined below. Figure 6-1. Data Validity SDA SCL Data Stable Data Stable Data Change Start Condition: A high-to-low transition of SDA with SCL high is a Start condition which must precede any other command. Stop Condition: A low-to-high transition of SDA with SCL high is a Stop condition. After a read sequence, the Stop command will place the EEPROM in a standby power mode. Figure 6-2. Start and Stop Condition SDA SCL Start Stop AT24C01C/02C/04C/08C Automotive [DATASHEET] Atmel-8819B-SEEPROM-AT24C01C-02C-04C-08C-Auto-Datasheet_072014 7 Acknowledge: All addresses and data words are serially transmitted to and from the EEPROM in 8-bit words. The EEPROM sends a zero to acknowledge that it has received each word. When the EEPROM is reading data out, the host will transmit an ACK after each data word to indicate that the next word can be transmitted.This happens during the ninth clock cycle. Figure 6-3. Output Acknowledge 1 SCL 8 9 DATA IN DATA OUT Start Acknowledge Standby Mode: AT24C01C/02C/04C/08C features a low-power standby mode which is enabled: Upon power-up. After the receipt of the Stop condition and the completion of any internal operations. 2-wire Software Reset: After an interruption in protocol, power loss, or system reset, any 2-wire part can be protocol reset by following these steps: 1. Create a Start condition. 2. 3. Clock nine cycles. Create another Start condition followed by Stop condition as shown in the following figures. The device is ready for the next communication after the above steps have been completed. Figure 6-4. Software Reset Dummy Clock Cycles 1 SCL 2 3 Start Condition SDA 8 AT24C01C/02C/04C/08C Automotive [DATASHEET] Atmel-8819B-SEEPROM-AT24C01C-02C-04C-08C-Auto-Datasheet_072014 8 9 Start Condition Stop Condition Figure 6-5. Bus Timing SCL: Serial Clock, SDA: Serial Data I/O tHIGH tF tR tLOW SCL tSU.STA tLOW tHD.STA tHD.DAT tSU.DAT tSU.STO SDA IN tAA tDH tBUF SDA OUT Figure 6-6. Write Cycle Timing SCL: Serial Clock, SDA: Serial Data I/O SCL SDA 8th Bit ACK WORDn twr Stop Condition Note: 1. (1) Start Condition The write cycle time tWR is the time from a valid Stop condition of a write sequence to the end of the internal clear/write cycle. AT24C01C/02C/04C/08C Automotive [DATASHEET] Atmel-8819B-SEEPROM-AT24C01C-02C-04C-08C-Auto-Datasheet_072014 9 7. Device Addressing The 1K/2K/4K/8K EEPROM devices require an 8-bit device address word following a Start condition to enable the device for a read or write operation. The device address word consists of a mandatory '1010' sequence for the first four Most Significant Bits (MSB). This is common to all the Serial EEPROM devices. For the 1K/2K EEPROM, the next three bits are the A2, A1, and A0 device address bits. These three bits must compare to their corresponding hardwired input A2, A1, and A0 pins. The 4K EEPROM only uses the A2 and A1 device address bits with the A0 bit being a memory address bit (P0). The two device address bits must compare to their corresponding hardwired input A2 and A1 pins. The A0 pin is not connected. The 8K EEPROM only uses the A2 device address bit with the next two bits (P1, P0) being for memory page addressing. The A2 bit must compare to its corresponding hardwired input pin. The A1 and A0 pins are not connected. The eighth bit of the device address is the read/write operation select bit. A read operation is initiated if this bit is high and a write operation is initiated if this bit is low. After a valid comparison of the device address, the EEPROM will output a zero. If the comparison is invalid, the device will return to a standby state. Figure 7-1. 1K/2K Device Address 1 0 1 0 A2 A1 A0 MSB 10 R/W LSB 4K 1 0 1 0 A2 A1 P0 R/W 8K 1 0 1 0 A2 P1 P0 R/W AT24C01C/02C/04C/08C Automotive [DATASHEET] Atmel-8819B-SEEPROM-AT24C01C-02C-04C-08C-Auto-Datasheet_072014 8. Write Operations Byte Write: A write operation requires an 8-bit data word address following the device address word and acknowledgment. Upon receipt of this address, the EEPROM will again respond with a zero and then clock in the first 8-bit data word. Following receipt of the 8-bit data word, the EEPROM will output a zero and the addressing device, such as a microcontroller, must terminate the write sequence with a Stop condition. At this time, the EEPROM enters an internally timed write cycle (tWR) to the nonvolatile memory. All inputs are disabled during this write cycle, and the EEPROM will not respond until the write is complete. Figure 8-1. Byte Write S T A R T W R I T E Device Address Word Address S T O P Data SDA Line M S B L R A S / C BW K M S B L A SC BK A C K * = Don’t care bit for 1K Page Write: The 1K/2K EEPROM are capable of an 8-byte Page Write. The 4K/8K EEPROM devices are capable of 16-byte Page Writes. A Page Write is initiated the same as a Byte Write, but the microcontroller does not send a Stop condition after the first data word is clocked in. Instead, after the EEPROM acknowledges receipt of the first data word, the microcontroller can transmit up to seven (1K/2K) or fifteen (4K/ 8K) more data words. The EEPROM will respond with a zero after each data word received. The microcontroller must terminate the Page Write sequence with a Stop condition. The data word address lower three (1K/2K) or four (4K/8K) bits are internally incremented following the receipt of each data word. The higher data word address bits are not incremented, retaining the memory page row location. When the word address, internally generated, reaches the page boundary, the next byte sent will be written to the beginning address on the same page. In order words, if more than eight (1K/2K) or sixteen (4K/8K) data words are transmitted to the EEPROM, the data word address will “roll over” and the data previously sent to the device at the beginning of the page write sequence will be altered. Figure 8-2. Page Write S T A R T Device Address W R I T E S T O P Data (n + 1) Data (n) Word Address (n) S T O P Data (n + x) SDA Line M S B L R A S / C BW K M S B A C K A C K A C K A C K * = Don’t care bit for 1K Acknowledge Polling: Once the internally timed write cycle has started and the EEPROM inputs are disabled, Acknowledge Polling can be initiated. This involves sending a start condition followed by the device address word. The read/write bit state is representative of the operation desired. Only if the internal write cycle has completed will the EEPROM respond with a zero, allowing the read or write sequence to continue. AT24C01C/02C/04C/08C Automotive [DATASHEET] Atmel-8819B-SEEPROM-AT24C01C-02C-04C-08C-Auto-Datasheet_072014 11 9. Read Operations Read operations are initiated the same way as write operations with the exception that the read/write select bit in the device address word is set to one. There are three read operations: Current Address Read Random Address Read Sequential Read Current Address Read: The internal data word address counter maintains the last address accessed during the last read or write operation, incremented by one. This address stays valid between operations as long as the chip power is maintained. The address roll-over during read is from the last byte of the last memory page to the first byte of the first page. The address roll-over during write is from the last byte of the current page to the first byte of the same page. Once the device address with the read/write select bit set to one is clocked in and acknowledged by the EEPROM, the current address data word is serially clocked out. To end the command, the microcontroller does not respond with a zero but does generate a Stop condition in the subsequent clock cycle. Figure 9-1. Current Address Read S T A R T R E A D Device Address S T O P Data SDA Line M S B N O L R A S / C B WK A C K Random Read: A Random Read requires a dummy byte write sequence to load in the data word address. Once the device address word and data word address are clocked in and acknowledged by the EEPROM, the microcontroller must generate another Start condition. The microcontroller now initiates a Current Address Read by sending a device address with the read/write select bit high. The EEPROM acknowledges the device address and serially clocks out the data word. To end the command, the microcontroller does not respond with a zero but does generate a Stop condition in the subsequent clock cycle. Figure 9-2. Random Read S T A R T Device Address W R I T E S T A R T Word Address (n) Device Address R E A D S T O P Data (n) SDA Line M S B R A / C W K A C K Dummy Write * = Don’t care bit for 1K 12 AT24C01C/02C/04C/08C Automotive [DATASHEET] Atmel-8819B-SEEPROM-AT24C01C-02C-04C-08C-Auto-Datasheet_072014 M S B A C K N O A C K Sequential Read: Sequential Reads are initiated by either a Current Address Read or a Random Address Read. After the microcontroller receives a data word, it responds with an acknowledge. As long as the EEPROM receives an acknowledge, it will continue to increment the data word address and serially clock out sequential data words. When the memory address limit is reached, the data word address will “roll over” and the Sequential Read will continue. To end the command, the microcontroller does not respond with a zero but does generate a Stop condition in the subsequent clock cycle. Figure 9-3. Sequential Read Device Address R E A D Data (n) Data (n + 1) Data (n + 2) S T O P Data (n + x) SDA Line R A / C WK 10. A C K A C K A C K N O A C K Power Recommendation The device internal POR (Power-On Reset) threshold is just below the minimum operating voltage of the device. Power shall rise monotonically from 0.0Vdc to full VCC in less than 1ms. Hold at full VCC for at least 100μs before the first operation. Power shall drop from full VCC to 0.0Vdc in less than 1ms. Power dropping to a non-zero level and then slowly going to zero is not recommended. Power shall remain off (0.0Vdc) for 0.5s minimum. Please consult Atmel if your power conditions do not meet the above recommendations. AT24C01C/02C/04C/08C Automotive [DATASHEET] Atmel-8819B-SEEPROM-AT24C01C-02C-04C-08C-Auto-Datasheet_072014 13 11. Product Markings AT24C01C, AT24C02C, AT24C04C and AT24C08C: Package Marking Information 8-lead TSSOP 8-lead SOIC ATMLPYWW ###D @ AAAAAAAA Note 1: ATPYWW ###D @ AAAAAAA designates pin 1 Note 2: Package drawings are not to scale Catalog Number Truncation AT24C01C Truncation Code ###: 01C AT24C02C Truncation Code ###: 02C AT24C04C Truncation Code ###: 04C AT24C08C Truncation Code ###: 08C Date Codes Y = Year 2: 2012 3: 2013 4: 2014 5: 2015 Voltages 6: 2016 7: 2017 8: 2018 9: 2019 WW = Work Week of Assembly 02: Week 2 04: Week 4 ... 52:Week 52 Country of Assembly Lot Number @ = Country of Assembly AAA...A = Atmel Wafer Lot Number % = Minimum Voltage D: 2.5V min Grade/Lead Finish Material P: Automotive/NiPdAu Atmel Truncation AT: Atmel ATM: Atmel ATML: Atmel 11/13/12 TITLE Package Mark Contact: [email protected] 14 24C01-02-04-08CAM, AT24C01C, AT24C02C, AT24C04C, and AT24C08C Automotive Package Marking Information AT24C01C/02C/04C/08C Automotive [DATASHEET] Atmel-8819B-SEEPROM-AT24C01C-02C-04C-08C-Auto-Datasheet_072014 DRAWING NO. REV. 24C01-02-04-08CAM B 12. Ordering Code Information Atmel Ordering Code AT24C01C-SSPD-T(1) AT24C01C-XPD-T(1) AT24C02C-SSPD-T(1) AT24C02C-XPD-T (1) AT24C04C-SSPD-T(1) AT24C04C-XPD-T (1) AT24C08C-SSPD-T(1) AT24C08C-XPD-T(1) Note: 1. Lead Finish NiPdAu (Lead-free/Halogen-free) NiPdAu (Lead-free/Halogen-free) NiPdAu (Lead-free/Halogen-free) NiPdAu (Lead-free/Halogen-free) Package Voltage Operation Range 2.5V to 5.5V Automotive Temperature (40C to 125C) 2.5V to 5.5V Automotive Temperature (40C to 125C) 2.5V to 5.5V Automotive Temperature (40C to 125C) 2.5V to 5.5V Automotive Temperature (40C to 125C) 8S1 8X 8S1 8X 8S1 8X 8S1 8X T = Tape and Reel SOIC 4,000 per reel. TSSOP 5,000 per reel. Package Type 8S1 8-lead, 0.150” wide, Plastic Gull Wing Small Outline (JEDEC SOIC) 8X 8-lead, 4.4mm body, Plastic Thin Shrink Small Outline Package (TSSOP) AT24C01C/02C/04C/08C Automotive [DATASHEET] Atmel-8819B-SEEPROM-AT24C01C-02C-04C-08C-Auto-Datasheet_072014 15 13. Packaging Information 13.1 8S1 — 8-lead JEDEC SOIC C 1 E E1 L N Ø TOP VIEW END VIEW e b COMMON DIMENSIONS (Unit of Measure = mm) A A1 D SIDE VIEW Notes: This drawing is for general information only. Refer to JEDEC Drawing MS-012, Variation AA for proper dimensions, tolerances, datums, etc. SYMBOL MIN A 1.35 NOM MAX – 1.75 A1 0.10 – 0.25 b 0.31 – 0.51 C 0.17 – 0.25 D 4.80 – 5.05 E1 3.81 – 3.99 E 5.79 – 6.20 e NOTE 1.27 BSC L 0.40 – 1.27 Ø 0° – 8° 6/22/11 Package Drawing Contact: [email protected] 16 TITLE 8S1, 8-lead (0.150” Wide Body), Plastic Gull Wing Small Outline (JEDEC SOIC) AT24C01C/02C/04C/08C Automotive [DATASHEET] Atmel-8819B-SEEPROM-AT24C01C-02C-04C-08C-Auto-Datasheet_072014 GPC SWB DRAWING NO. REV. 8S1 G 13.2 8X — 8-lead TSSOP C 1 Pin 1 indicator this corner E1 E L1 N L Top View End View A b A1 e COMMON DIMENSIONS (Unit of Measure = mm) A2 D SYMBOL Side View Notes: 1. This drawing is for general information only. Refer to JEDEC Drawing MO-153, Variation AA, for proper dimensions, tolerances, datums, etc. 2. Dimension D does not include mold Flash, protrusions or gate burrs. Mold Flash, protrusions and gate burrs shall not exceed 0.15mm (0.006in) per side. 3. Dimension E1 does not include inter-lead Flash or protrusions. Inter-lead Flash and protrusions shall not exceed 0.25mm (0.010in) per side. 4. Dimension b does not include Dambar protrusion. Allowable Dambar protrusion shall be 0.08mm total in excess of the b dimension at maximum material condition. Dambar cannot be located on the lower radius of the foot. Minimum space between protrusion and adjacent lead is 0.07mm. 5. Dimension D and E1 to be determined at Datum Plane H. MIN NOM MAX A - - 1.20 A1 0.05 - 0.15 A2 0.80 1.00 1.05 D 2.90 3.00 3.10 2, 5 4.40 4.50 3, 5 0.25 0.30 4 E 6.40 BSC E1 4.30 b 0.19 e L 0.65 BSC 0.45 L1 C NOTE 0.60 0.75 1.00 REF 0.09 - 0.20 2/27/14 TITLE Package Drawing Contact: [email protected] GPC 8X, 8-lead 4.4mm Body, Plastic Thin Shrink Small Outline Package (TSSOP) TNR DRAWING NO. 8X AT24C01C/02C/04C/08C Automotive [DATASHEET] Atmel-8819B-SEEPROM-AT24C01C-02C-04C-08C-Auto-Datasheet_072014 REV. E 17 14. 18 Revision History Doc. Rev. Date 8819B 07/2014 8819A 12/2012 Comments Increase tAA maximum from 90ns to 900ns. Update the 8X package drawing, footers, and the disclaimer page. Initial document release. AT24C01C/02C/04C/08C Automotive [DATASHEET] Atmel-8819B-SEEPROM-AT24C01C-02C-04C-08C-Auto-Datasheet_072014 XXXXXX Atmel Corporation 1600 Technology Drive, San Jose, CA 95110 USA T: (+1)(408) 441.0311 F: (+1)(408) 436.4200 | www.atmel.com © 2014 Atmel Corporation. / Rev.: Atmel-8819B-SEEPROM-AT24C01C-02C-04C-08C-Auto-Datasheet_072014. Atmel®, Atmel logo and combinations thereof, Enabling Unlimited Possibilities®, and others are registered trademarks or trademarks of Atmel Corporation in U.S. and other countries. Other terms and product names may be trademarks of others. DISCLAIMER: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products. 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