at24c128b ATMEL Corporation, at24c128b Datasheet

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... Die Sales: Wafer Form, Tape and Reel and Bumped Wafers 2. Description The AT24C128B provides 131,072 bits of serial electrically erasable and programma- ble read-only memory (EEPROM) organized as 16,384 words of 8 bits each. The device’s cascadable feature allows up to eight devices to share a common two-wire bus ...

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... Storage Temperature .........................................−65°C to +150°C Voltage on Any Pin with Respect to Ground ........................................ −1.0V to +7.0V Maximum Operating Voltage .......................................... 6.25V DC Output Current........................................................ 5.0 mA Figure 3-1. VCC GND WP SCL SDA AT24C128B 2 *NOTICE: Block Diagram START STOP LOGIC LOAD COMP DEVICE ADDRESS COMPARATOR R/W DATA WORD ADDR/COUNTER D IN ...

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... WRITE PROTECT (WP): The write protect input, when connected to GND, allows normal write operations. When WP is connected directly to Vcc, all write operations to the memory are inhib- ited. If the pin is left floating, the WP pin will be internally pulled down to GND. However, due to capacitive coupling that may appear during customer applications, Atmel recommends always connecting the WP pins to a known state ...

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... Memory Organization AT24C128B, 128K SERIAL EEPROM: The 128K is internally organized as 256 pages of 64 bytes each. Random word addressing requires a 14-bit data word address. (1) Table 5-1. Pin Capacitance Applicable over recommended operating range from T Symbol Test Condition C Input/Output Capacitance (SDA) I/O C Input Capacitance ( ...

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Table 5-3. AC Characteristics (Industrial Temperature) Applicable over recommended operating range from T erwise noted). Test conditions are listed in Note 2. Symbol Parameter f Clock Frequency, SCL SCL t Clock Pulse Width Low LOW t Clock Pulse Width High ...

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... EEPROM in 8-bit words. The EEPROM sends a “0” during the ninth clock cycle to acknowledge that it has received each word. STANDBY MODE: The AT24C128B features a low-power standby mode that is enabled upon power-up and after the receipt of the stop bit and the completion of any internal operations. ...

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The device is ready for next communication after above steps have been completed. Figure 6-3. Software Reset Start bit SCL 1 SDA Figure 6-4. Bus Timing ...

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... Upon a compare of the device address, the EEPROM will output a “0” compare is not made, the device will return to a standby state. DATA SECURITY: The AT24C128B has a hardware data protection scheme that allows the user to write protect the whole memory when the WP pin ...

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... The data word address lower six 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 fol- lowing byte is placed at the beginning of the same page. If more than 64 data words are transmitted to the EEPROM, the data word address will “ ...

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... 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. The AT24C128B 10 Current Address Read Figure 9-2) ...

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Figure 9-3. 5296A–SEEPR–1/08 Figure Sequential Read 9-3). 11 ...

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... AT24C128B Ordering Information Ordering Code AT24C128B-PU (Bulk Form Only) (1) AT24C128BN-SH-B (NiPdAu Lead Finish) (2) AT24C128BN-SH-T (NiPdAu Lead Finish) (1) AT24C128B-TH-B (NiPdAu Lead Finish) (2) AT24C128B-TH-T (NiPdAu Lead Finish) (2) AT24C128BY6-YH-T (NiPdAu Lead Finish) (2) AT24C128BD3-DH-T (NiPdAu Lead Finish) (2) AT24C128BU2-UU-T (3) AT24C128B-W-11 Notes: 1. “-B” denotes bulk. 2. “-T” denotes and tape and reel. SOIC = 4K. TSSOP, dBGA2, and Mini MAP = 5k. SAP = 3K. ...

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Part marking scheme 11.1 8-PDIP TOP MARK Seal Year |---|---|---|---|---|---|---|---| |---|---|---|---|---|---|---|---| |---|---|---|---|---|---|---|---| * Lot Number |---|---|---|---|---|---|---|---| | Pin 1 Indicator (Dot) 11.2 8-SOIC TOP MARK |---|---|---|---|---|---|---|---| ...

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... D B |---|---|---| H 1 |---|---|---| |---|---|---| * | Pin 1 Indicator (Dot) AT24C128B SEAL YEAR 6: 2006 7: 2007 W 8: 2008 9: 2009 C00 = Country or Origin A AAA = Atmel Lot Number Y = YEAR OF ASSEMBLY XX = ATMEL LOT NUMBER TO COORESPOND WITH NSEB TRACE CODE LOG BOOK. (e. AA, AB, AC,...AX, AY, AZ SEAL YEAR ...

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TOP MARK |---|---|---| |---|---|---| |---|---|---| * | Pin 1 Indicator (Dot) 11.6 dBGA2 TOP MARK LINE 1-------> LINE 2-------> COUNTRY OF ORIGIN Y = ONE DIGIT YEAR CODE 4: 2004 ...

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... E and eA measured with the leads constrained to be perpendicular to datum. 5. Pointed or rounded lead tips are preferred to ease insertion and b3 maximum dimensions do not include Dambar protrusions. Dambar protrusions shall not exceed 0.010 (0.25 mm). 2325 Orchard Parkway San Jose, CA 95131 R AT24C128B ...

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JEDEC SOIC TOP VIEW e e SIDE VIEW Note: These drawings are for general information only. Refer to JEDEC Drawing MS-012, Variation AA for proper dimensions, tolerances, datums, etc. 1150 E. Cheyenne Mtn. Blvd. Colorado Springs, CO 80906 ...

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... Dimension b does not include Dambar protrusion. Allowable Dambar protrusion shall be 0.08 mm 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 0.07 mm. 5. Dimension D and determined at Datum Plane H. 2325 Orchard Parkway San Jose, CA 95131 R AT24C128B TITLE 8A2, 8-lead, 4 ...

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MAP D Notes: 1. This drawing is for general information only. Refer to JEDEC Drawing MO-229, for proper dimensions, tolerances, datums, etc. 2. Dimension b applies to metallized terminal and is measured between 0.15 mm and 0.30 mm ...

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... ULA PIN # TOP VIEW 1150 E. Cheyenne Mtn. Blvd. Colorado Springs, CO 80906 R AT24C128B SIDE VIEW SYMBOL TITLE 8D3, 8-lead (1.80 x 2.20 mm Body) Ultra Leadframe Land Grid Array (ULA PIN # BOTTOM VIEW ...

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... Revision History Doc. Rev. 5296A 5296A–SEEPR–1/08 Date Comments AT24C128B product with date code 2008 work week 14 (814) or later supports 5Vcc operation 1/2008 Initial document release 21 ...

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... Atmel products are not suitable for, and shall not be used in, automotive applications. Atmel’s products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life. ©2008 Atmel Corporation. All rights reserved. Atmel of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others. International Atmel Asia ...