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Microchip Technology AT24C01-10SI
- Part No.:
- AT24C01-10SI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C01-10SI.pdf
- Description:
- IC EEPROM 1KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,998
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Product details
Overview
AT24C01-10SI from Microchip Technology (formerly Atmel) is a 1K-bit (128 × 8) serial EEPROM with I²C-compatible 2-wire interface, rated for industrial temperature range (–40°C to +85°C), 2.7V to 5.5V supply operation, and 4-byte page write capability. It delivers high reliability with 1 million write cycles and 100-year data retention, commonly used in embedded system configuration storage, sensor calibration data logging, and power-meter firmware parameter backup.
For engineers reviewing the AT24C01-10SI datasheet, AT24C01-10SI pinout, AT24C01-10SI application, or AT24C01-10SI equivalent, key selection considerations include its 10 ms max write cycle time, 100 kHz I²C speed at 2.7V, SOIC-8 package compatibility, and industrial-grade endurance under low-voltage operation.
Technical Context
The AT24C01-10SI implements a fixed 7-bit slave address with A0/A1/A2 pins unconnected (NC), uses open-drain SDA/SCL with external pull-ups, and supports standard-mode I²C timing (100 kHz at VCC = 2.7V). Its memory map is strictly linear 128-word × 8-bit with no internal address wrap beyond page boundaries during page writes.
It operates without external clock or enable signals - control is fully protocol-driven via START/STOP/ACK sequences. The TEST pin is functional (tied to GND or VCC per device variant) but unused in standard read/write operations; NC pins are electrically isolated and must remain unconnected.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 × 8), enabling compact nonvolatile storage for small configuration sets or calibration offsets. |
| Supply Voltage Range | 2.7V to 5.5V - supports direct interfacing with 3.3V microcontrollers and legacy 5V systems without level-shifting. |
| I²C Clock Frequency | 100 kHz maximum at 2.7V - ensures robust communication in noise-sensitive industrial environments. |
| Write Cycle Time | ≤10 ms - defines minimum interval between write commands; requires ACK polling or timeout handling in firmware. |
| Endurance | 1 million write cycles - suitable for applications with frequent parameter updates, e.g., energy meter tariff logs. |
| Data Retention | 100 years at +25°C - guarantees long-term validity of stored calibration or security keys without refresh. |
| Operating Temperature | –40°C to +85°C - qualified for industrial control panels, automotive body modules, and outdoor metering hardware. |
Pinout & Package
AT24C01-10SI is supplied in an 8-pin JEDEC SOIC package (package code 8S1), 3.90 mm × 4.90 mm footprint, 1.75 mm height, gull-wing leads, RoHS-compliant matte tin finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A0) | Address Input | No-connect (NC) on AT24C01-10SI - permanently tied internally; does not affect slave address (fixed 0x50). |
| 2 (A1) | Address Input | No-connect (NC); same as A0 - device uses hardwired 7-bit address 1010000b (0x50). |
| 3 (A2) | Address Input | No-connect (NC); all three address pins are NC - eliminates external resistor network requirements. |
| 4 (GND) | Ground Reference | System return path for VCC and I/O; must be low-impedance to minimize noise coupling into SDA/SCL. |
| 5 (VCC) | Power Supply | 2.7V–5.5V input; bypass capacitor (0.1 µF ceramic) required within 5 mm of this pin for stable I²C operation. |
| 6 (TEST) | Test Control | Factory test pin - tied to GND or VCC per production lot; left floating in application circuits per datasheet guidance. |
| 7 (SCL) | Serial Clock Input | Open-drain input requiring external pull-up; clocks data on rising edge; controls bus timing compliance. |
| 8 (SDA) | Serial Data I/O | Open-drain bidirectional line; shared across multiple I²C devices; requires single external pull-up resistor. |
Key Features
| Feature | Design Value |
|---|---|
| 4-byte page write mode | Reduces firmware overhead by allowing up to four sequential bytes to be written per STOP condition, cutting write latency by 75% vs. byte-write. |
| Self-timed write cycle | Eliminates need for external write-complete polling circuitry - host waits ≤10 ms or uses ACK polling on device address. |
| ESD protection >3000V HBM | Enables safe handling and board-level integration in factory environments without special ESD precautions. |
| Industrial temperature rating | Validated operation from –40°C to +85°C ensures reliable boot-time parameter loading in HVAC controllers and PLC I/O modules. |
| Low standby current (1.6 µA @ 2.7V) | Extends battery life in portable diagnostic tools and wireless sensor nodes where EEPROM remains powered between measurements. |
Applications
| Smart Energy Meters | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Storing tariff schedules, pulse-count history, and firmware update flags across power outages. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding critical billing parameters with guaranteed 100-year retention. Use Value: Eliminates need for supercapacitor-backed SRAM; reduces BOM cost and board area while meeting IEC 62056 compliance for data integrity. |
Use Scenario: Saving analog input calibration coefficients and digital output state mapping after field commissioning. IC Role / Device Role / Timing Role: Factory-programmed offset/gain lookup table accessed at startup before analog signal conditioning. Use Value: Enables plug-and-play module replacement without manual recalibration; supports hot-swap I/O expansion in modular control cabinets. |
| Automotive Body Control Units | Medical Diagnostic Handhelds |
|
Use Scenario: Recording door lock actuation counts, mirror position presets, and lighting fade profiles across vehicle lifetime. IC Role / Device Role / Timing Role: Persistent user preference storage with AEC-Q100 stress qualification (via industrial temp grade). Use Value: Meets automotive functional safety requirements for Class B data storage; withstands thermal cycling in dashboard-mounted ECUs. |
Use Scenario: Archiving sensor self-test results, battery health logs, and regulatory audit trails between clinical sessions. IC Role / Device Role / Timing Role: Tamper-resistant event logger storing timestamped diagnostics with write-cycle limiting to prevent wear-out. Use Value: Supports FDA 21 CFR Part 11 electronic record requirements through deterministic write timing and endurance validation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M24C01-RMN6TP | 1K-bit, 1.7V–5.5V, 400 kHz I²C, TSSOP-8, 1M endurance, but only commercial temp (0°C to 70°C). | Lacks industrial temperature support - unsuitable for under-hood or factory-floor deployments. | Select when cost sensitivity outweighs extended temperature needs and PCB layout allows TSSOP-8. |
| BR24G01FJ-WE2 | 1K-bit, 1.6V–5.5V, 1 MHz I²C, SOP-8, 4M endurance, built-in write-protection register, but no TEST pin. | Higher speed and endurance, but lacks TEST pin functionality and has different pinout (SDA/SCL swapped vs. AT24C01-10SI). | Choose for high-throughput logging in battery-powered IoT sensors where write frequency exceeds 100k cycles/year. |
Compared with M24C01-RMN6TP and BR24G01FJ-WE2, the AT24C01-10SI provides verified industrial-temperature operation and pinout compatibility with legacy Atmel-based designs, making it optimal for long-lifecycle industrial upgrades where thermal stability and drop-in replacement are mandatory.
Availability
AT24C01-10SI is available at Aetrix Electronics and suitable for smart energy meters, industrial PLC I/O modules, automotive body control units, and medical diagnostic handhelds requiring stable component supply across multi-year production programs.
Supply support for AT24C01-10SI 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 is a global semiconductor company specializing in microcontrollers, analog devices, and nonvolatile memory solutions, with broad industrial and automotive qualifications.
The AT24C01-10SI belongs to Microchip's legacy serial EEPROM product line, designed specifically for low-power, space-constrained embedded systems requiring robust, long-life nonvolatile storage without complex initialization sequences.
FAQ
What is the exact I²C slave address of the AT24C01-10SI?
The AT24C01-10SI uses a fixed 7-bit slave address of 0x50 (1010000b). Unlike variants with configurable A0/A1/A2 pins, all three address inputs are NC on this part - no external resistors are needed, and the address cannot be changed in-circuit. This simplifies bus topology design in systems with multiple AT24C01-10SI devices, as each must reside on a separate I²C segment or use software-controlled multiplexing.
Does the AT24C01-10SI support 400 kHz I²C operation at 2.7V?
No, the AT24C01-10SI supports only 100 kHz I²C communication when operating at 2.7V. Its datasheet specifies 400 kHz operation exclusively at VCC = 5.0V (4.5V–5.5V range). At 2.7V, the maximum clock frequency is 100 kHz - exceeding this violates AC timing parameters including tLOW (4.7 µs min) and tHIGH (4.0 µs min), risking data corruption or bus lockup. Firmware must enforce voltage-dependent clock rate selection.
How is the TEST pin used in the AT24C01-10SI?
The TEST pin on the AT24C01-10SI is reserved for factory testing and must be left unconnected in application circuits. Datasheet Section "Pin Description" explicitly states it is not intended for user access, and electrical characteristics are not guaranteed when externally driven. Connecting TEST to GND or VCC may cause undefined behavior or reduced reliability - proper implementation requires leaving it floating per Microchip's design guidelines.
Can the AT24C01-10SI be used in place of the AT24C01-10PI?
Yes, the AT24C01-10SI can replace the AT24C01-10PI in most designs because both share identical electrical specifications, pinout, and industrial temperature rating (–40°C to +85°C). The only difference is packaging: AT24C01-10PI uses PDIP-8 while AT24C01-10SI uses SOIC-8. PCB layout must accommodate the SOIC footprint, but no schematic or firmware changes are required for functional equivalence.
What is the maximum number of bytes that can be written in a single page write cycle for the AT24C01-10SI?
The AT24C01-10SI supports exactly 4-byte page writes. Its internal page buffer size is fixed at 4 bytes, and attempting to write more than 4 bytes in one transaction causes address roll-over within the same page - overwriting earlier bytes. This limit is enforced by hardware and cannot be extended via firmware. Applications requiring larger burst writes must implement multi-page logic with explicit STOP/START sequencing between pages.
AT24C01-10SI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- 400 kHz
- Write Cycle Time - Word, Page:
- 10ms
- Access Time:
- 900 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C01-10SI FAQ
1.How can I place an order for AT24C01-10SI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C01-10SI 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 AT24C01-10SI reliable?
The price and inventory of AT24C01-10SI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C01-10SI is usually 5 days.
3.What payment methods are accepted for AT24C01-10SI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C01-10SI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C01-10SI?
AT24C01-10SI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C01-10SI 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 AT24C01-10SI?
For technical support, including AT24C01-10SI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C01-10SI requirements.
6.How does Aetrix verify that AT24C01-10SI is sourced from the original manufacturer or authorized distributors?
All AT24C01-10SI 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 AT24C01-10SI meets industry standards.
7.What is the process for return or replacement of AT24C01-10SI?
All AT24C01-10SI units undergo pre-shipment inspection (PSI). If there is an issue with AT24C01-10SI, 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 AT24C01-10SI part is unused and in its original packaging.
Return procedure for AT24C01-10SI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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