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Microchip Technology AT24C01-10PI
- Part No.:
- AT24C01-10PI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT24C01-10PI.pdf
- Description:
- IC EEPROM 1KBIT I2C 400KHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,176
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Product details
Overview
AT24C01-10PI 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 100 kHz clock frequency at 2.7V. It features 4-byte page write mode, self-timed 10 ms max write cycle, and high reliability with 1 million write cycles and 100-year data retention - used in embedded system configuration storage, sensor calibration memory, and power-management parameter backup.
For engineers reviewing the AT24C01-10PI datasheet, AT24C01-10PI pinout, AT24C01-10PI application, or AT24C01-10PI equivalent, key selection considerations include industrial-grade temperature support, 2.7V minimum VCC compatibility, PDIP/SOIC/MSOP/TSSOP package options, and I²C bus timing compliance at 100 kHz under low-voltage conditions.
Technical Context
The AT24C01-10PI implements a standard I²C protocol with open-drain SDA and edge-triggered SCL pins, supporting START/STOP condition generation, 7-bit slave addressing, and ACK polling during write cycles. Its internal architecture uses a 128-word × 8-bit nonvolatile memory array with automatic address incrementing within 4-byte pages.
It operates across multiple voltage grades but the -10PI suffix specifically denotes the 2.7V–5.5V supply range and industrial temperature grade. The device enters standby mode after STOP condition receipt and disables all inputs during tWR (10 ms), requiring external polling to detect write completion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 × 8), enabling compact firmware parameter or calibration coefficient storage without external address latches. |
| Interface Protocol | I²C-compatible 2-wire serial interface with bidirectional SDA and unidirectional SCL - requires only two MCU GPIOs and pull-up resistors. |
| Max Clock Frequency | 100 kHz at VCC = 2.7V, limiting bus throughput but ensuring robust noise immunity in noisy industrial environments. |
| Write Cycle Time | 10 ms maximum self-timed internal write - blocks I²C communication until complete; necessitates ACK polling for synchronization. |
| Endurance & Retention | 1 million write cycles and 100 years data retention - suitable for infrequent but mission-critical configuration updates over product lifetime. |
| Operating Temperature | –40°C to +85°C industrial grade - validated for use in automotive body control modules, industrial PLC I/O modules, and outdoor metering hardware. |
| Supply Voltage Range | 2.7V to 5.5V - supports direct interfacing with 3.3V microcontrollers and legacy 5V systems without level-shifting. |
Pinout & Package
AT24C01-10PI is supplied in 8-pin PDIP (package code 8P3), with pin 1 designated by notch or dot marking. Pin functions are identical across SOIC (8S1), MSOP (8M), and TSSOP (8T) variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | NC | No-connect pins - electrically isolated; must remain unconnected per datasheet to avoid undefined behavior. |
| 5 | GND | Ground reference for VCC and signal levels; requires low-impedance connection to system ground plane. |
| 6 | TEST | Factory test input - tied to GND or VCC during production; must be externally connected to GND or left floating (not driven) in application. |
| 7 | SCL | Serial clock input - edge-triggered, accepts 100 kHz square wave; requires external pull-up resistor (typically 4.7 kΩ). |
| 8 | SDA | Open-drain bidirectional data line - shared across I²C bus; requires external pull-up and wire-OR capability with other devices. |
Key Features
| Feature | Design Value |
|---|---|
| 4-byte page write mode | Reduces I²C transaction overhead by allowing up to four sequential bytes per write command - cuts bus traffic by 75% vs. byte writes. |
| ACK polling support | Enables deterministic detection of write completion without fixed delays - improves system responsiveness and avoids unnecessary retries. |
| Industrial temperature rating | Validated operation from –40°C to +85°C - eliminates derating concerns in uncontrolled ambient deployments like factory-floor sensors. |
| ESD protection >3000V | Withstands HBM ESD events common during board handling and field service - reduces need for external TVS on I²C lines. |
| Low standby current (1.6 µA typical @2.7V) | Minimizes battery drain in always-on IoT edge nodes - enables multi-year operation on coin-cell power sources. |
Applications
| Industrial Sensor Calibration | Embedded System Configuration |
|---|---|
|
Use Scenario: Storing factory-trimmed offset/gain coefficients for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile parameter storage accessed during power-up initialization via I²C; no real-time timing constraints. Use Value: Enables field-replaceable sensor modules with unique calibration data retained across power cycles and firmware updates. |
Use Scenario: Holding user-configurable settings (e.g., display brightness, network timeout, alarm thresholds) in medical diagnostic handhelds. IC Role / Device Role / Timing Role: Low-speed I²C EEPROM for persistent settings storage; accessed only during UI navigation or boot sequence. Use Value: Preserves user preferences across battery removal and firmware upgrades without requiring cloud sync or external storage. |
| Power Management Backup | Automotive Body Control |
|
Use Scenario: Saving last-known state (e.g., relay positions, fault history, runtime counters) in uninterruptible power supplies during AC loss. IC Role / Device Role / Timing Role: Fail-safe configuration keeper triggered by brown-out detection circuitry; write occurs before shutdown. Use Value: Allows graceful recovery post-power restoration - avoids reinitialization delays and preserves operational continuity. |
Use Scenario: Storing seat/mirror position presets and door lock configuration in automotive body control units (BCUs). IC Role / Device Role / Timing Role: I²C-connected memory for user-profile persistence; accessed during ignition-on sequence. Use Value: Supports personalized vehicle settings across multiple drivers while meeting AEC-Q100 reliability requirements via industrial-grade qualification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95010-WMN6TP | 1 Kbit SPI interface, 5 MHz max clock, 2.5–5.5 V supply, same industrial temp range. | Requires SPI-capable MCU instead of I²C; higher speed but incompatible bus protocol. | Select when existing design uses SPI peripherals and board layout lacks I²C pull-ups or routing. |
| BR24G01FJ-WE2 | 1 Kbit I²C interface, 1.7–5.5 V supply, industrial temp, 400 kHz max clock at 2.7V+. | Supports faster 400 kHz I²C mode at 2.7V+, whereas AT24C01-10PI is limited to 100 kHz at that voltage. | Choose for new designs needing higher I²C throughput without changing bus topology or MCU driver stack. |
Compared with AT24C01-10PI, M95010-WMN6TP offers SPI flexibility but mandates protocol redesign, while BR24G01FJ-WE2 delivers faster I²C performance at low voltage - both retain 1 Kbit density and industrial temperature support but differ in interface timing and ecosystem integration.
Availability
AT24C01-10PI is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded system configuration, and power management backup applications requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for AT24C01-10PI 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 components, and memory solutions, with broad industrial and automotive qualification capabilities.
The AT24C01 series was designed as a cost-optimized, pin-compatible family of I²C EEPROMs targeting space-constrained embedded systems needing reliable, low-power nonvolatile storage for configuration and calibration data.
FAQ
What is the maximum I²C clock frequency supported by AT24C01-10PI?
The AT24C01-10PI supports up to 100 kHz I²C clock frequency when operating at VCC = 2.7V. This is specified in the AC Characteristics table under fSCL for the "2.7-, 2.5-, 1.8-volt" column. Higher frequencies (e.g., 400 kHz) apply only to 5.0V versions like AT24C01-10PC, not the -10PI variant.
Does AT24C01-10PI require external pull-up resistors on SDA and SCL lines?
Yes, AT24C01-10PI requires external pull-up resistors on both SDA and SCL lines because its SDA pin is open-drain and SCL is a CMOS input. Typical values range from 2.2 kΩ to 10 kΩ depending on bus capacitance and speed; 4.7 kΩ is commonly used for 100 kHz operation with moderate trace length.
Can AT24C01-10PI be used in automotive applications?
AT24C01-10PI is qualified for industrial temperature range (–40°C to +85°C) and meets reliability specs including 1 million write cycles and >3000V ESD protection. While not AEC-Q100 certified, it is widely deployed in non-safety-critical automotive body control modules where industrial-grade qualification suffices.
How many bytes can be written in a single page write operation for AT24C01-10PI?
AT24C01-10PI supports a 4-byte page write mode. After sending the starting address and first data byte, the device automatically increments the internal address pointer for up to three additional bytes - totaling four bytes per page write command before requiring a STOP condition.
What is the function of the TEST pin on AT24C01-10PI?
The TEST pin on AT24C01-10PI is reserved for factory testing and must be externally connected to GND or left unconnected (floating) in end applications. Driving this pin high or low during normal operation may cause undefined behavior or inhibit communication, per the official datasheet pin description.
AT24C01-10PI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT24C01-10PI FAQ
1.How can I place an order for AT24C01-10PI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C01-10PI 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 AT24C01-10PI reliable?
The price and inventory of AT24C01-10PI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C01-10PI is usually 5 days.
3.What payment methods are accepted for AT24C01-10PI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C01-10PI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C01-10PI?
AT24C01-10PI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C01-10PI 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 AT24C01-10PI?
For technical support, including AT24C01-10PI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C01-10PI requirements.
6.How does Aetrix verify that AT24C01-10PI is sourced from the original manufacturer or authorized distributors?
All AT24C01-10PI 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 AT24C01-10PI meets industry standards.
7.What is the process for return or replacement of AT24C01-10PI?
All AT24C01-10PI units undergo pre-shipment inspection (PSI). If there is an issue with AT24C01-10PI, 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 AT24C01-10PI part is unused and in its original packaging.
Return procedure for AT24C01-10PI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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