Application Scenarios:
Store sensor calibration data, communication protocol parameters (e.g., Wi-Fi module SSID/password), device unique identifiers (UUID), etc.
Example: Smart home devices (e.g., smart sockets, thermostats) write default configurations to AT24C16C during manufacturing, ensuring data retention after power loss.
Advantages:
Compact SOT23-8 package fits small IoT modules, saving PCB space.
Wide voltage range (1.7V–5.5V) is compatible with batteries (e.g., coin cells) or system power supplies (3.3V/5V).
Application Scenarios:
Collaborate with RTC chips to store time calibration parameters, alarm event logs, etc.
Example: In industrial controllers, AT24C16C backs up time data lost due to dead RTC batteries.
Advantages:
Low standby current (6 µA) extends battery life, suitable for long-term backup power scenarios.
Application Scenarios:
Record equipment operating status (e.g., fault codes, uptime, temperature threshold exceedance logs) for post-failure diagnosis.
Example: PLC (Programmable Logic Controllers) use I²C to write real-time data to AT24C16C, meeting anti-interference requirements in industrial environments.
Advantages:
Industrial temperature range (-40°C–+85°C) adapts to harsh working conditions.
High endurance (1,000,000 write cycles) handles frequent data updates.
Application Scenarios:
Store network addresses (e.g., Modbus slave addresses), communication baud rates, etc., in distributed control systems.
Example: Lock configuration parameters via the AT24C16C hardware write-protect pin (WP) to prevent accidental modification during operation.
Advantages:
I²C interface supports multi-device mounting (with address configuration pins in some packages), simplifying bus management.
Application Scenarios:
Store user motion data (e.g., step counts, heart rate history), firmware version numbers, Bluetooth pairing information, etc.
Example: True wireless earbuds (TWS) write pairing status to AT24C16C before shutdown, ensuring fast reconnection on startup.
Advantages:
Ultra-compact SOT23-8 package suits miniaturized PCB designs for wearables.
1 MHz fast communication mode (FM+) enables real-time data synchronization with low latency.
Application Scenarios:
Store vehicle sensor calibration data (e.g., TPMS initial pressure values), seat position memory parameters, etc.
Example: Power window controllers use AT24C16C to record user-preset window positions.
Advantages:
High ESD protection (>4000V) withstands electrostatic interference in automotive environments.
100-year data retention meets long-term reliability requirements for vehicle equipment.
Application Scenarios:
Store diagnostic trouble codes (DTCs), mileage data, etc., for quick access during 售后维修 (after-sales maintenance).
Example: OBD adapters cache data locally in AT24C16C to avoid frequent bus access and improve performance.
Advantages:
Wide temperature range adapts to extreme in-vehicle conditions (e.g., summer heat or winter cold).
Application Scenarios:
Store patient physiological data (e.g., blood glucose history, blood pressure user profiles), device calibration coefficients, etc.
Example: Handheld ECG monitors use AT24C16C to record waveform feature values from each measurement for physician review.
Advantages:
Low power consumption extends battery life (e.g., 6 µA standby current), ideal for battery-powered portable devices.
Lead-free, RoHS-compliant packaging meets environmental standards for medical equipment.
| Type | Description |
|---|---|
| Category | Integrated Circuits (ICs) Memory Memory |
| Mfr | Microchip Technology |
| Packaging | Tube |
| Part Status | Active |
| DigiKey Programmable | Verified |
| Memory Type | Non-Volatile |
| Memory Format | EEPROM |
| Technology | EEPROM |
| Memory Size | 16Kbit |
| Memory Organization | 2K x 8 |
| Memory Interface | I2C |
| Clock Frequency | 1 MHz |
| Write Cycle Time - Word, Page | 5ms |
| Access Time | 550 ns |
| Voltage - Supply | 1.7V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Supplier Device Package | 8-SOIC |
| Base Product Number | AT24C16C |
| Pin Number | Pin Name | Function Description | Electrical Characteristics |
|---|---|---|---|
| 1 | NC | Not Connected (NC), left floating or reserved for design needs (typically unused). | Has no impact on the circuit when floating; no pull-up/down required. |
| 2 | GND | Ground pin, provides the power reference potential. | Connect to system ground (0V) to ensure a stable power supply loop. |
| 3 | Vcc | Power input pin, supports a wide voltage range. | - Voltage range: 1.7V–5.5V (Standard Mode/Fast Mode) - ≥2.5V required for 1 MHz mode. |
| 4 | — | No such pin (SOT23-8 package has only 8 pins; pin 4 is empty in some packages). | — |
| 5 | SCL | I²C Clock Line (input signal for synchronizing data transmission). | - Supports 100 kHz (Standard Mode), 400 kHz (Fast Mode), 1 MHz (FM+) - Requires an external pull-up resistor (typically 4.7kΩ). |
| 6 | SDA | I²C Data Line (bidirectional data transmission). | - Open-drain output, requires an external pull-up resistor (typically 4.7kΩ) - Supports bidirectional communication; data remains stable when SCL is high. |
| 7 | WP | Write Protect pin, controls write access to the entire array. | - High level (Vcc): Write disabled (hardware protection) - Low level (GND): Write enabled - Floating state is undefined; must be explicitly connected. |
| 8 | NC | Not Connected pin, same function as pin 1, typically left floating. | — |
| Part Number | Manufacturer | Package | Description |
|---|---|---|---|
| AT24C16C-PUM | Microchip Technology | 8-DIP (0.300, 7.62mm) | EEPROM, SERIAL, 16K (2KX8), 8PDIP |
| AT24C16C-SSHM-T | Microchip Technology | 8-SOIC (0.154, 3.90mm Width) | EEPROM Serial-2Wire 16K-bit 2k x 8 1.8V/2.5V/3.3V/5V 8-Pin SOIC T/R |
| AT24C16C-XHM-T | Microchip Technology | 8-TSSOP (0.173, 4.40mm Width) | IC EEPROM 16KBIT 1MHZ 8TSSOP |
| AT24C16C-MAHM-T | Microchip Technology | 8-UFDFN Exposed Pad | EEPROM Serial-2Wire 16K-bit 2k x 8 1.8V/2.5V/3.3V/5V 8-Pin UDFN EP T/R |
| AT24C16C-STUM-T | Microchip Technology | SOT-23-5 Thin, TSOT-23-5 | EEPROM Serial-2Wire 16K-bit 2K x 8 1.8V/2.5V/3.3V/5V 5-Pin SOT-23 T/R |
| AT24C16C-XHM-B | Microchip Technology | 8-TSSOP (0.173, 4.40mm Width) | EEPROM, SERIAL, 16K (2KX8), 8TSSOP |
| AT24C16C-SSPD-T | Microchip Technology | 8-SOIC (0.154, 3.90mm Width) | EEPROM Serial-2Wire 16K-bit 2K x 8 3.3V/5V Automotive 8-Pin SOIC T/R |
| AT24C16C-MAHM-E | Microchip Technology | 8-UFDFN Exposed Pad | IC EEPROM 16K I2C 1MHZ 8UDFN |
| AT24C16C-XPD-T | Microchip Technology | 8-TSSOP (0.173, 4.40mm Width) | EEPROM Serial-2Wire 16K-bit 2K x 8 3.3V/5V Automotive 8-Pin TSSOP T/R |
| Pictures |  |
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| Parts | AT24C16C-SSHM-B +BOM | AT24C16C-SS9M-T +BOM |
| Pbfree Code | Yes | |
| Rohs Code | Yes | Yes |
| Part Life Cycle Code | Transferred | Active |
| Ihs Manufacturer | ATMEL CORP | MICROCHIP TECHNOLOGY INC |
| Part Package Code | SOIC | |
| Package Description | 0.150 INCH, GREEN, PLASTIC, MS-012AA, SOIC-8 | |
| Pin Count | 8 | |
| Reach Compliance Code | compliant | unknown |
| ECCN Code | EAR99 | EAR99 |
| HTS Code | 8542.32.00.51 | 8542.32.00.51 |
| Clock Frequency-Max (fCLK) | 1 MHz | 0.4 MHz |
| Data Retention Time-Min | 100 | |
| Endurance | 1000000 Write/Erase Cycles | |
| I2C Control Byte | 1010MMMR | |
| JESD-30 Code | R-PDSO-G8 | R-PDSO-G8 |
| JESD-609 Code | e4 | e4 |
| Length | 4.925 mm | 4.9 mm |
| Memory Density | 16384 bit | 16384 bit |
| Memory IC Type | EEPROM | EEPROM |
| Memory Width | 8 | 8 |
| Moisture Sensitivity Level | 1 | |
| Number of Functions | 1 | 1 |
| Number of Terminals | 8 | 8 |
| Number of Words | 2048 words | 2048 words |
| Number of Words Code | 2000 | 2000 |
| Operating Mode | SYNCHRONOUS | SYNCHRONOUS |
| Operating Temperature-Max | 85 °C | 85 °C |
| Operating Temperature-Min | -40 °C | -40 °C |
| Organization | 2KX8 | 2KX8 |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY |
| Package Code | SOP | SOP |
| Package Equivalence Code | SOP8,.25 | |
| Package Shape | RECTANGULAR | RECTANGULAR |
| Package Style | SMALL OUTLINE | SMALL OUTLINE |
| Parallel/Serial | SERIAL | SERIAL |
| Peak Reflow Temperature (Cel) | 260 | |
| Qualification Status | Not Qualified | |
| Seated Height-Max | 1.75 mm | 1.75 mm |
| Serial Bus Type | I2C | I2C |
| Standby Current-Max | 0.000001 A | |
| Supply Current-Max | 0.003 mA | |
| Supply Voltage-Max (Vsup) | 5.5 V | 5.5 V |
| Supply Voltage-Min (Vsup) | 1.7 V | 1.7 V |
| Supply Voltage-Nom (Vsup) | 2.5 V | 2.5 V |
| Surface Mount | YES | YES |
| Technology | CMOS | CMOS |
| Temperature Grade | INDUSTRIAL | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING | GULL WING |
| Terminal Pitch | 1.27 mm | 1.27 mm |
| Terminal Position | DUAL | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 | |
| Width | 3.9 mm | 3.9 mm |
| Write Cycle Time-Max (tWC) | 5 ms | 5 ms |
| Write Protection | HARDWARE | |
| Base Number Matches | 2 | 1 |
| Factory Lead Time | 7 Weeks | |
| Date Of Intro | 2019-01-09 | |
| Screening Level | AEC-Q100; TS 16949 |
