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AT24C128C Dataheets PDF



Part Number AT24C128C
Manufacturers ATMEL
Logo ATMEL
Description I2C Automotive Temperature Serial EEPROM
Datasheet AT24C128C DatasheetAT24C128C Datasheet (PDF)

AT24C128C I2C-Compatible (2-Wire) Serial EEPROM 128-Kbit (16,384 x 8) DATASHEET Features  Low-voltage and Standard-voltage Operation ̶ VCC = 1.7V to 5.5V  Internally Organized as 16,384 x 8  2-wire Serial Interface  Schmitt Trigger, Filtered Inputs for Noise Suppression  Bidirectional Data Transfer Protocol  400kHz (1.7V) and 1MHz (2.5V, 2.7V, 5.0V) Compatibility  Write Protect Pin for Hardware Protection  64-byte Page Write Mode ̶ Partial Page Writes Allowed  Self-timed Write Cycle (5m.

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AT24C128C I2C-Compatible (2-Wire) Serial EEPROM 128-Kbit (16,384 x 8) DATASHEET Features  Low-voltage and Standard-voltage Operation ̶ VCC = 1.7V to 5.5V  Internally Organized as 16,384 x 8  2-wire Serial Interface  Schmitt Trigger, Filtered Inputs for Noise Suppression  Bidirectional Data Transfer Protocol  400kHz (1.7V) and 1MHz (2.5V, 2.7V, 5.0V) Compatibility  Write Protect Pin for Hardware Protection  64-byte Page Write Mode ̶ Partial Page Writes Allowed  Self-timed Write Cycle (5ms Max)  High Reliability ̶ Endurance: 1,000,000 Write Cycles ̶ Data Retention: 40 Years  Lead-free/Halogen-free Devices Available  Green Package Options (Pb/Halide-free/RoHS Compliant) ̶ 8-lead JEDEC SOIC, 8-lead TSSOP, 8-pad UDFN, 8-pad XDFN, 8-ball VFBGA, and 4-ball WLCSP Packages  Die Sale Options: Wafer Form, Waffle Pack, and Bumped Wafers Description The Atmel® AT24C128C provides 131,072-bits of Serial Electrically Erasable and Programmable Read-Only Memory (EEPROM) organized as 16,384 words of 8 bits each. The device’s cascading feature allows up to eight devices to share a common 2-wire bus. The device is optimized for use in many industrial and commercial applications where low-power and low-voltage operation are essential. The devices are available in space-saving 8-lead JEDEC SOIC, 8-lead TSSOP, 8-pad UDFN, 8-pad XDFN, 8-ball VFBGA, and 4-ball WLCSP packages. In addition, this device operates from 1.7V to 5.5V. Atmel-8734D-SEEPROM-AT24C128C-Datasheet_082015 1. Pin Configurations and Pinouts Table 1-1. Pin A0 A1 A2 GND SDA SCL WP VCC Pin Configuration Function Address Input Address Input Address Input Ground Serial Data Serial Clock Input Write Protect Device Power Supply 8-lead SOIC A0 A1 A2 GND 18 27 36 45 Top View VCC WP SCL SDA A0 A1 A2 GND 8-lead TSSOP 18 27 36 45 Top View VCC WP SCL SDA 8-pad UDFN/XDFN 8-ball VFBGA A0 A1 A2 GND 18 27 36 45 Top View VCC WP SCL SDA A0 1 8 VCC A1 2 7 WP A2 3 6 SCL GND 4 5 SDA Top View 4-ball WLCSP VCC SCL SDA GND Top View 2. Absolute Maximum Ratings* Operating Temperature . . . . . . . . . . .-55°C to +125°C Storage Temperature . . . . . . . . . . . -65°C to + 150°C Voltage on any pin with respect to ground . . . . . . . . . . . . . . . -1.0 V +7.0V Maximum Operating Voltage . . . . . . . . . . . . . . . 6.25V DC Output Current . . . . . . . . . . . . . . . . . . . . . . .5.0mA *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 are not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. 2 AT24C128C [DATASHEET] Atmel-8734D-SEEPROM-AT24C128C-Datasheet_082015 3. Block Diagram Figure 3-1. Block Diagram VCC GND WP SCL SDA A2 A1 A0 Start Stop Logic LOAD Device Address Comparator Serial Control Logic COMP LOAD INC EN H.V. Pump/Timing Data Recovery R/W Data Word Addr/Counter EEPROM X DEC DIN DOUT Y DEC Serial MUX DOUT/ACK LOGIC 4. Pin Descriptions Serial Clock (SCL): The SCL input is used to positive-edge clock data into each EEPROM device and negativeedge clock data out of each device. 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. Device Addresses (A2, A1, A0): The A2, A1, and A0 pins are device address inputs that are hard wired (directly to GND or to VCC) for compatibility with other Atmel AT24C devices. When the pins are hard wired, as many as eight 128K devices may be addressed on a single bus system. (Device addressing is discussed in detail in Section 7. “Device Addressing” on page 9). A device is selected when a corresponding hardware and software match is true. If these pins are left floating, the A2, A1, and A0 pins will be internally pulled down to GND. However, due to capacitive coupling that may appear during customer applications, Atmel recommends always connecting the address pins to a known state. When using a pull-up resistor, Atmel recommends using 10k or less. 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 inhibited. 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. When using a pull-up resistor, Atmel recommends using 10k or less. Table 4-1. Write Protect WP Pin Status At VCC At GND Part of the Array Protected Full Array Normal Read/Write Operations AT24C128C [DATASHEET] Atmel-8734D-SEEPROM-AT24C128C-Datasheet_082015 3 5. Memory Organization AT24C128C, 128K Serial EEPROM: The 128K is int.


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