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AT24CS128W-10SI-2.7 Datasheet(PDF) 4 Page - ATMEL Corporation |
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AT24CS128W-10SI-2.7 Datasheet(HTML) 4 Page - ATMEL Corporation |
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4 / 12 page  AT24CS128/256 4 Notes: 1. This parameter is characterized and is not 100% tested. 2. AC measurement conditions: R L (connects to VCC): 1.3KΩ (2.7V, 5V), 10KΩ (1.8V) Input pulse voltages: 0.3V CC to 0.7VCC Input rise and fall times: ≤50ns Input and output timing reference voltages: 0.5V CC Device Operation CLOCK and DATA TRANSITIONS: The SDA pin is nor- mally pulled high with an external device. Data on the SDA pin may change only during SCL low time periods (refer to Data Validity timing diagram). Data changes during SCL high periods will indicate a start or stop condition as defined below. START CONDITION: A high-to-low transition of SDA with SCL high is a start condition which must precede any other command (refer to Start and Stop Definition timing dia- gram). 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 (refer to Start and Stop Definition timing diagram). ACKNOWLEDGE: All addresses and data words are seri- ally transmitted to and from the 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 AT24CS128/256 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. MEMORY RESET: After an interruption in protocol, power loss or system reset, any 2-wire part can be reset by follow- ing these steps: (a) Clock up to 9 cycles, (b) look for SDA high in each cycle while SCL is high and then (c) create a start condition as SDA is high. AC Characteristics Applicable over recommended operating range from T A = -40°C to +85°C, VCC = +1.8V to +5.5V, CL = 100 pF (unless oth- erwise noted). Test conditions are listed in Note 2. Symbol Parameter 1.8-volt 2.7-volt 5.0-volt Units MinMax MinMax MinMax f SCL Clock Frequency, SCL 400 1000 1000 kHz t LOW Clock Pulse Width Low 1.3 0.6 0.6 µs t HIGH Clock Pulse Width High 1.0 0.4 0.4 µs t AA Clock Low to Data Out Valid 0.1 0.9 0.05 0.55 0.05 0.55 µs t BUF Time the bus must be free before a new transmission can start(1) 1.2 0.5 0.5 µs t HD.STA Start Hold Time 0.6 0.25 0.25 µs t SU.STA Start Set-up Time 0.6 0.25 0.25 µs t HD.DAT Data In Hold Time 0 0 0 µs t SU.DAT Data In Set-up Time 100 100 100 ns t R Inputs Rise Time(1) 0.3 0.3 0.3 µs t F Inputs Fall Time(1) 300 100 100 ns t SU.STO Stop Set-up Time 0.6 0.25 0.25 µs t DH Data Out Hold Time 50 50 50 ns t WR Write Cycle Time 20 10 10 ms Endurance(1) 5.0V, 25°C, Page Mode 100K 100K 100K Write Cycles |
Similar Part No. - AT24CS128W-10SI-2.7 |
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Similar Description - AT24CS128W-10SI-2.7 |
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