at24c128sc ATMEL Corporation, at24c128sc Datasheet
at24c128sc
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at24c128sc Summary of contents
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... Data Retention: 40 Years – ESD Protection: > 4000V Description The AT24C128SC/256SC provides 131,072/262,144 bits of serial electrically erasable and programmable read only memory (EEPROM) organized as 16,384/32,768 words of 8 bits each. The devices are optimized for use in smart card applications where low- power and low-voltage operation may be essential ...
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... SERIAL DATA (SDA): The SDA pin is bidirectional 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. AT24C128SC/256SC, 128K/256K SERIAL EEPROM: The 128K/256K is internally organized as 256/512 pages of 64-bytes each. Random word addressing requires a 14/15-bit data word address. ...
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... Input High Level IH V Output Low Level OL Note: 1. Applicable over recommended operating range from min and V max are reference only and are not tested 1661B–SEEPR–04/04 AT24C128SC/AT24C256SC = 1.0 MHz Test Condition V = 5.0V Read at 400 kHz 5.0V Write at 400 kHz ...
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... Applicable over recommended operating range from T wise noted). Test conditions are listed in Note 3. 2. This parameter is characterized and is not 100% tested measurement conditions: R (connects 1.3 k (2.7V, 5V Input pulse voltages: 0.3V Input rise and fall times: Input and output timing reference voltages: 0.5V AT24C128SC/AT24C256SC 4 2.7-volt Min 1.3 0.6 0.05 (2) 1.3 0.6 0.6 0 100 0 ...
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... EEPROM in 8-bit words. The EEPROM sends a zero during the ninth clock cycle to acknowledge that it has received each word. STANDBY MODE: The AT24C128SC/256SC features a low power standby mode which is enabled: a) upon power-up and b) after the receipt of the STOP bit and the completion of any internal operations. ...
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... Timing Diagrams Bus Timing Write Cycle Timing Data Validity AT24C128SC/AT24C256SC 6 Figure 3. Bus Timing Note: SCL: Serial Clock; SDA: Serial Data I/O Figure 4. Write Cycle Timing Note: 1. The write cycle time t is the time from a valid stop condition of a write sequence to WR the end of the internal clear/write cycle. ...
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... Start and Stop Definition Output Acknowledge 1661B–SEEPR–04/04 Figure 6. Start and Stop Definition SDA SCL START Figure 7. Output Acknowledge SCL DATA IN DATA OUT START AT24C128SC/AT24C256SC ACKNOWLEDGE STOP 7 ...
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... Device Addressing Write Operations AT24C128SC/AT24C256SC 8 The 128K/256K EEPROM requires an 8-bit device address word following a start condi- tion to enable the chip for a read or write operation (refer to Figure 8). The device address word consists of a mandatory one, zero sequence for the first four most signifi- cant bits as shown ...
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... 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 AT24C128SC/AT24C256SC ...
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... Notes DON’T CARE bit 2. † = DON’T CARE bit for the 128K Figure 13. Sequential Read AT24C128SC/AT24C256SC 10 address and serially clocks out the data word. The microcontroller does not respond with a zero but does generate a following stop condition (refer to Figure 12). ...
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... AT24C128SC Ordering Information Ordering Code AT24C128SC-09AT M2 – A Module AT24C128SC-09BT M2 – B Module AT24C128SC-10WI 7 mil Wafer AT24C256SC Ordering Information Ordering Code AT24C256SC-09AT M2 – A Module AT24C256SC-09BT M2 – B Module AT24C256SC-10WI 7 mil Wafer (1) Description Package Type M2 – A Module M2 ISO 7816 Smart Card Module M2 – B Module M2 ISO 7816 Smart Card Module with Atmel Logo Note: Formal drawings may be obtained from an Atmel sales office ...
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... The module dimensions listed refer to the dimensions of the exposed metal contact area. The actual dimensions of the module after excise or punching from the carrier tape are generally 0.4 mm greater in both directions (i.e., a punched M2 module will yield 13.0 x 11.8 mm). AT24C128SC/AT24C256SC 12 Ordering Code: 09BT-00 Module Size: M2 Dimension*: 12 ...
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... Fax: (81) 3-3523-7581 Disclaimer: Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company’s standard warranty which is detailed in Atmel’s Terms and Conditions located on the Company’s web site. The Company assumes no responsibil ity for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time wit h out notice, and does not make any commitment to update the information contained herein ...