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Microchip Technology AT24C01C-STUM-T
- Part No.:
- AT24C01C-STUM-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
AT24C01C-STUM-T.pdf
- Description:
- IC EEPROM 1KBIT I2C 1MHZ SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:10,805
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Product details
Overview
AT24C01C-STUM-T from Microchip Technology is a 1-Kbit (128 × 8) I²C-compatible serial EEPROM in an 8-pad UDFN package, operating from 1.7V to 5.5V with industrial temperature range (−40°C to +85°C), 100/400 kHz I²C interface, and hardware write-protection via WP pin - used for nonvolatile parameter storage in microcontroller-based sensor nodes and power management subsystems.
For engineers reviewing the AT24C01C-STUM-T datasheet, AT24C01C-STUM-T pinout, AT24C01C-STUM-T application, or AT24C01C-STUM-T equivalent, key selection criteria include its 8-pin UDFN footprint, 5 ms max self-timed write cycle, 6 μA standby current, page-write capability, and I²C Fast Mode support up to 400 kHz at 1.7V.
Technical Context
The AT24C01C-STUM-T functions as an I²C slave device with fixed 7-bit address prefix 1010b and three programmable address bits (A2–A0), enabling up to eight devices on one bus. Its internal memory is organized as 16 pages of 8 bytes each, supporting both byte and 8-byte page writes.
It implements Schmitt-trigger inputs and noise-filtered I/O for robust operation in electrically noisy environments, and integrates a Power-on Reset (POR) circuit with 100 µs tPUP delay and 1.5 V VPOR threshold to prevent spurious writes during power-up sequences.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 1 Kbit (128 × 8), sufficient for storing calibration data, device IDs, or configuration registers in space-constrained embedded systems |
| Supply voltage | 1.7 V to 5.5 V - supports direct interfacing with 1.8 V, 3.3 V, and 5 V microcontrollers without level-shifting |
| I²C speed modes | Standard mode (100 kHz), Fast mode (400 kHz) - enables fast firmware updates or logging while maintaining compatibility with legacy controllers |
| Write endurance | 1,000,000 cycles - suitable for applications requiring frequent reconfiguration, such as adaptive power supply settings |
| Data retention | 100 years at 55°C - ensures long-term reliability in industrial control panels and metering equipment |
| Standby current | 6 µA maximum at 5.5 V - minimizes battery drain in always-on IoT edge sensors and portable medical devices |
| Write-protect function | Hardware-enabled via WP pin tied to VCC - prevents accidental overwrites during firmware upgrades or field servicing |
Pinout & Package
AT24C01C-STUM-T is housed in an 8-pad UDFN (Ultra Thin Dual Flat No-lead) package, 2.0 mm × 1.6 mm × 0.55 mm, with wettable flanks and RoHS-compliant lead-free finish. The exposed pad is internally connected to GND and must be soldered to PCB ground for thermal and EMI performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device address input | Hardwired to GND or VCC to configure one of eight possible I²C addresses; internally pulled down if floating |
| A1 | Device address input | Second bit of 3-bit hardware address; enables multi-device bus topology without external logic |
| A2 | Device address input | Most significant address bit; combined with A1/A0, selects unique slave address in shared I²C system |
| GND | Ground reference | System return path for VCC and I/O; must be low-impedance connection to minimize noise coupling into SDA/SCL |
| SDA | Serial data line | Open-drain bidirectional I²C data line requiring external pull-up resistor (≤10 kΩ); supports wire-OR with other slaves |
| SCL | Serial clock line | Input-only clock line; must be pulled high externally; rising edge latches input data, falling edge outputs data |
| WP | Write-protect control | Active-high protection: tied to VCC disables all writes; tied to GND enables full read/write access |
| VCC | Power supply | 1.7–5.5 V supply; must ramp monotonically at ≤0.1 V/µs; includes internal POR circuit with 100 µs tPUP delay |
Key Features
| Feature | Design Value |
|---|---|
| Page write mode | 8-byte burst writes reduce I²C transaction overhead by 8× vs. byte writes - critical for logging timestamped sensor data |
| Noise-immune interface | Schmitt-trigger inputs + filtered I/O suppress >100 ns spikes - eliminates false ACK/NACK in motor-drive or switching-power environments |
| Low-voltage operation | Full functionality down to 1.7 V enables direct use with single-cell Li-ion or energy-harvesting power sources |
| Hardware write protection | WP pin provides fail-safe, non-software-dependent lock against firmware corruption during brown-out or reset events |
| Green packaging | Lead-free, halide-free, RoHS-compliant UDFN meets IPC/JEDEC J-STD-020 moisture sensitivity level 1 (MSL1) |
Applications
| Industrial Sensor Calibration | Smart Meter Configuration Storage |
|---|---|
Use Scenario: Storing factory-calibrated gain/offset coefficients and temperature compensation tables in pressure or humidity sensors deployed in HVAC systems. IC Role / Device Role / Timing Role: Nonvolatile parameter store accessed during boot-up and runtime recalibration; retains values across power cycles and temperature excursions. Use Value: Eliminates need for external calibration EEPROM or MCU flash wear-leveling, reducing BOM count and firmware complexity. | Use Scenario: Holding tariff schedules, billing history, and communication module credentials in utility-grade electricity meters operating for 15+ years. IC Role / Device Role / Timing Role: Secure, long-life configuration memory with hardware write-lock enabled during firmware updates to prevent credential overwrite. Use Value: Meets ANSI C12.1 and IEC 62056 requirements for 100-year data retention and 1M-cycle endurance under intermittent write loads. |
| Embedded System Bootloader Settings | Medical Device Usage Logs |
Use Scenario: Saving bootloader jump vectors, secure boot keys, and recovery partition pointers in industrial PLCs where firmware integrity is safety-critical. IC Role / Device Role / Timing Role: Trusted configuration vault accessed only by authenticated bootloader; WP pin hardwired to VCC during production programming. Use Value: Prevents unauthorized modification of boot flow - satisfies IEC 61508 SIL2 functional safety requirements for memory protection. | Use Scenario: Recording patient session timestamps, sensor fault events, and calibration verification logs in portable ECG monitors powered by coin cells. IC Role / Device Role / Timing Role: Ultra-low-power nonvolatile logger synchronized to MCU sleep/wake cycles; 6 µA standby current extends battery life beyond 2 years. Use Value: Enables FDA 21 CFR Part 11-compliant audit trails without adding supercapacitors or backup batteries. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C01D-STUM-T | Same 1-Kbit capacity and UDFN-8 package, but uses updated process with enhanced ESD (>6 kV HBM) and tighter tWR spec (4.5 ms max) | Preferred for new designs targeting automotive AEC-Q200 stress testing or higher-reliability industrial deployments | Select AT24C01D-STUM-T when qualification to AEC-Q200 or extended ESD margin is required; otherwise AT24C01C-STUM-T remains fully compatible. |
| M24C01-RMN6TP | 1-Kbit I²C EEPROM in 8-lead SOIC package; supports same voltage range and I²C speeds, but lacks WP pin and uses different pinout (no A0–A2) | Suitable for cost-sensitive, single-device applications where board space allows SOIC and hardware write protection is unnecessary | Choose M24C01-RMN6TP only if SOIC footprint is acceptable and WP functionality is not needed; incompatible pinout prevents drop-in replacement. |
Compared with AT24C01C-STUM-T, AT24C01D-STUM-T offers improved robustness for harsh environments but identical software interface and timing, while M24C01-RMN6TP trades hardware flexibility (no address pins, no WP) for lower unit cost in fixed-configuration systems.
Availability
AT24C01C-STUM-T is available at Aetrix Electronics and suitable for industrial sensor calibration, smart meter configuration storage, and embedded system bootloader settings requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for AT24C01C-STUM-T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology Inc. is a leading provider of microcontroller, analog, FPGA, and memory solutions, headquartered in Chandler, Arizona, with global design, manufacturing, and sales operations.
The AT24Cxx series is part of Microchip's serial EEPROM product line, designed specifically for reliable, low-power, I²C-based nonvolatile data storage in space- and power-constrained embedded systems across industrial, medical, and consumer markets.
FAQ
What is the maximum I²C clock frequency supported by AT24C01C-STUM-T at 1.8 V supply?
The AT24C01C-STUM-T supports Fast Mode I²C up to 400 kHz at 1.7 V to 2.5 V supply, including 1.8 V. This is confirmed in the AC Characteristics table (DS20006111A, page 10), where tLOW and tHIGH timing parameters are specified for VCC = 1.7V–2.5V. No Fast Mode Plus (1 MHz) operation is permitted below 2.5 V.
Does AT24C01C-STUM-T require external pull-up resistors on SDA and SCL lines?
Yes, AT24C01C-STUM-T requires external pull-up resistors on both SDA and SCL lines because its SDA pin is open-drain and SCL is an input-only pin. The datasheet specifies maximum pull-up resistance of 10 kΩ and recommends values of 4 kΩ for 400 kHz operation. Failure to install pull-ups will prevent I²C communication.
Can AT24C01C-STUM-T retain data for 100 years at room temperature?
Yes - the AT24C01C-STUM-T guarantees 100 years of data retention at 55°C per JEDEC JESD22-A117. At 25°C (room temperature), extrapolated retention exceeds 200 years based on Arrhenius modeling in Microchip's qualification reports. This makes it suitable for infrastructure equipment with multi-decade service life.
Is the exposed pad on the AT24C01C-STUM-T UDFN package electrically connected?
Yes, the exposed pad on the AT24C01C-STUM-T's 8-pad UDFN package is internally connected to GND. Microchip's packaging documentation (DS20006111A, page 4) states it "can be connected to GND or left floating," but best practice is to solder it to a PCB GND plane for optimal thermal dissipation and EMI suppression.
How many AT24C01C-STUM-T devices can share the same I²C bus?
Up to eight AT24C01C-STUM-T devices can share one I²C bus using hardware address pins A2, A1, and A0. Each combination of A2:A1:A0 (000 to 111) yields a unique 7-bit slave address (1010xxx), allowing independent addressing without software arbitration or additional hardware.
AT24C01C-STUM-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 1Kbit
- Memory Organization:
- 128 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)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
AT24C01C-STUM-T FAQ
1.How can I place an order for AT24C01C-STUM-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C01C-STUM-T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AT24C01C-STUM-T reliable?
The price and inventory of AT24C01C-STUM-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C01C-STUM-T is usually 5 days.
3.What payment methods are accepted for AT24C01C-STUM-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C01C-STUM-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C01C-STUM-T?
AT24C01C-STUM-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C01C-STUM-T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AT24C01C-STUM-T?
For technical support, including AT24C01C-STUM-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C01C-STUM-T requirements.
6.How does Aetrix verify that AT24C01C-STUM-T is sourced from the original manufacturer or authorized distributors?
All AT24C01C-STUM-T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AT24C01C-STUM-T meets industry standards.
7.What is the process for return or replacement of AT24C01C-STUM-T?
All AT24C01C-STUM-T units undergo pre-shipment inspection (PSI). If there is an issue with AT24C01C-STUM-T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AT24C01C-STUM-T part is unused and in its original packaging.
Return procedure for AT24C01C-STUM-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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