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Microchip Technology AT24C01-10PI-2.5
- Part No.:
- AT24C01-10PI-2.5
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT24C01-10PI-2.5.pdf
- Description:
- IC EEPROM 1KBIT I2C 400KHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,804
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Product details
Overview
AT24C01-10PI-2.5 from Microchip Technology (formerly Atmel) is a 1K-bit (128 × 8) serial EEPROM with I²C-compatible 2-wire interface, optimized for low-voltage industrial applications requiring reliable nonvolatile storage at VCC = 2.5V–5.5V. It supports 100 kHz clock frequency, 4-byte page write, self-timed 10 ms max write cycle, and delivers 1 million write cycles with 100-year data retention.
For engineers reviewing the AT24C01-10PI-2.5 datasheet, AT24C01-10PI-2.5 pinout, AT24C01-10PI-2.5 application, or AT24C01-10PI-2.5 equivalent, key selection factors include industrial temperature range (−40°C to +85°C), 2.5V minimum supply compatibility, PDIP/SOIC/MSOP/TSSOP package options, and I²C bus timing compliance under low-voltage operation.
Technical Context
The AT24C01-10PI-2.5 implements a fixed 7-bit slave address with A0–A2 pins for device addressing on shared I²C buses, using open-drain SDA and input-only SCL pins with defined rise/fall time constraints. Its memory map is linear 128-word space with automatic address rollover during sequential reads or page writes.
Write operations require ACK polling for completion detection; byte and 4-byte page write modes are supported, with all inputs disabled during the internal 10 ms tWR cycle. Standby current is specified at 4 µA max (VCC = 2.5V), enabling ultra-low-power retention in battery-backed systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 × 8), sufficient for calibration data, configuration registers, or small firmware patches in resource-constrained systems. |
| Supply Voltage Range | 2.5V to 5.5V - enables direct interfacing with 2.5V logic domains without level shifting in industrial controllers. |
| I²C Clock Frequency | 100 kHz maximum - ensures robust noise immunity and timing margin in electrically noisy factory environments. |
| Write Cycle Time | 10 ms max - defines minimum interval between successive writes; requires software delay or ACK polling before next command. |
| Endurance | 1 million write cycles - supports frequent parameter updates in programmable logic controllers or sensor auto-calibration routines. |
| Data Retention | 100 years at +25°C - guarantees long-term integrity of stored device IDs, security keys, or manufacturing traceability data. |
| Operating Temperature | −40°C to +85°C - qualified for deployment in industrial automation, motor drives, and outdoor metering equipment. |
Pinout & Package
AT24C01-10PI-2.5 is supplied in 8-pin PDIP (8P3) package per ordering code suffix "PI", with lead finish Pb-free and RoHS-compliant construction. Pin 1 is index-marked; pins 1–4 and 5–8 are arranged in dual-in-line configuration with 0.300" body width and 0.100" lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 4) | Ground Reference | System common return path; must be low-impedance connection to minimize noise coupling into SDA/SCL lines. |
| VCC (Pin 8) | Power Supply | Accepts 2.5V–5.5V; decoupling capacitor (0.1 µF ceramic) required within 1 cm for stable I²C communication. |
| SDA (Pin 5) | Serial Data I/O | Open-drain bidirectional bus line; requires external pull-up resistor (typically 2.2–10 kΩ) to VCC. |
| SCL (Pin 6) | Serial Clock Input | Input-only clock line; driven by master only; rise/fall times constrained to meet tR/tF specs for 100 kHz operation. |
| TEST (Pin 7) | Test Input | Must be tied to GND or VCC; no functional role in normal operation; left unconnected risks undefined behavior. |
| A0–A2 (Pins 1–3) | Device Address Inputs | Hardwired address bits; enable up to eight AT24C01-10PI-2.5 devices on same I²C bus without address conflict. |
| NC (Pins 1–3, alternate) | No Connect | Unused pins in this variant; must remain floating - no routing or soldering required. |
Key Features
| Feature | Design Value |
|---|---|
| 2.5V–5.5V Operation | Eliminates need for voltage translators when interfacing with 2.5V microcontrollers or FPGAs in industrial I/O modules. |
| Industrial Temperature Range | Ensures reliable read/write functionality across thermal cycling in DIN-rail mounted PLCs and power inverters. |
| 4-Byte Page Write Mode | Reduces I²C transaction overhead by 75% vs. four separate byte writes - critical for minimizing bus occupancy in real-time systems. |
| 100-Year Data Retention | Meets long-lifecycle requirements for medical device calibration storage and utility meter firmware version tracking. |
| ESD Protection >3000V | Withstands handling and field surges without latch-up or parametric shift - reduces field failure rates in assembly-line environments. |
Applications
| Industrial Sensor Node | Programmable Logic Controller (PLC) |
|---|---|
|
Use Scenario: Storing calibrated offset/gain coefficients and sensor ID in wireless temperature/humidity nodes deployed in HVAC ducts. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed during power-up via I²C; no timing-critical interaction during runtime. Use Value: Enables field-replaceable sensors with unique calibration profiles retained across 10+ years of operation without battery backup. |
Use Scenario: Holding user-defined I/O mapping tables and alarm thresholds in modular PLC backplanes operating at 2.5V logic levels. IC Role / Device Role / Timing Role: I²C slave EEPROM storing persistent configuration; accessed during boot or reconfiguration events. Use Value: Supports hot-swap module identification and parameter persistence without requiring external FRAM or battery-backed SRAM. |
| Smart Energy Meter | Motor Drive Control Board |
|
Use Scenario: Recording tariff schedules, meter firmware version, and tamper-event logs in ANSI C12.22-compliant electricity meters. IC Role / Device Role / Timing Role: Secure, low-power nonvolatile memory for regulatory-mandated data retention; written infrequently but read on demand. Use Value: Meets 100-year data retention requirement for billing history while consuming <4 µA in standby - extends battery life in AMI endpoints. |
Use Scenario: Storing motor-specific commutation angles and thermal derating curves in variable-frequency drives with isolated 2.5V control logic. IC Role / Device Role / Timing Role: Configuration memory mapped to microcontroller's I²C peripheral; updated only during commissioning or firmware upgrade. Use Value: Allows drive interoperability across multiple motor models without hardware changes - parameters loaded at startup to optimize torque response. |
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, 1.7–5.5V supply, 400 kHz max clock, SOIC-8 package only; no PDIP option. | Higher speed but lacks −40°C to +85°C industrial qualification; rated only for commercial temp (0°C to 70°C). | Select when 400 kHz bus speed is required and ambient temperature stays within 0°C–70°C. |
| BR24G01NUX-5TR | 1K-bit, 1.6–5.5V supply, 1 MHz max clock, TSSOP-8 only; built-in write protection register. | Includes software-controlled WP bit; no TEST pin; different pinout (SCL/SDA swapped vs. AT24C01-10PI-2.5). | Select when enhanced write protection and higher-speed I²C are prioritized over pin compatibility and industrial temp range. |
Compared with M24C01-RMN6TP and BR24G01NUX-5TR, the AT24C01-10PI-2.5 uniquely combines industrial temperature rating, PDIP availability, 2.5V minimum operation, and TEST pin support - making it optimal for legacy industrial designs requiring drop-in replacement and mechanical compatibility with through-hole assembly.
Availability
AT24C01-10PI-2.5 is available at Aetrix Electronics and suitable for industrial sensor nodes, programmable logic controllers, smart energy meters, and motor drive control boards requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for AT24C01-10PI-2.5 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 a focus on reliability and long-term product support.
The AT24C01 series was designed for cost-sensitive, low-power embedded systems needing simple, standards-compliant I²C EEPROM storage - particularly in industrial, automotive, and consumer applications where endurance and data retention are critical.
FAQ
What is the maximum I²C clock frequency supported by AT24C01-10PI-2.5?
The AT24C01-10PI-2.5 supports a maximum I²C clock frequency of 100 kHz when operating at VCC = 2.5V–5.5V. This is explicitly specified in the AC Characteristics table for 2.5V, 2.7V, and 1.8V versions. While 5V-only variants support 400 kHz, the -2.5 suffix denotes the low-voltage variant locked to 100 kHz for guaranteed timing margin and noise immunity.
Does AT24C01-10PI-2.5 require external pull-up resistors on SDA and SCL lines?
Yes, AT24C01-10PI-2.5 requires external pull-up resistors on both SDA and SCL lines because its SDA pin is open-drain and SCL is input-only. Typical values range from 2.2 kΩ to 10 kΩ depending on bus capacitance and VCC; the device itself does not integrate pull-ups, and omission will prevent I²C communication.
What is the function of the TEST pin on AT24C01-10PI-2.5?
The TEST pin on AT24C01-10PI-2.5 must be externally tied to either GND or VCC - it has no active function during normal operation. Leaving it floating may cause undefined behavior or increased current consumption. The pin exists for factory test access and is not used in application circuits.
Can AT24C01-10PI-2.5 be used in automotive applications?
AT24C01-10PI-2.5 is rated for industrial temperature (−40°C to +85°C) but is not AEC-Q100 qualified. While it may function in some under-hood or cabin applications, Microchip offers automotive-grade variants (e.g., AT24C01C-SSHM-T) with full qualification. For production automotive use, AT24C01-10PI-2.5 is not recommended.
How many devices can share the same I²C bus with AT24C01-10PI-2.5?
Up to eight AT24C01-10PI-2.5 devices can share one I²C bus using the A0, A1, and A2 address pins, which provide three hardware-selectable bits for unique 7-bit slave addresses. Each device must have a distinct combination of A0–A2 connections (GND/VCC) to avoid address collisions.
AT24C01-10PI-2.5 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:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT24C01-10PI-2.5 FAQ
1.How can I place an order for AT24C01-10PI-2.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C01-10PI-2.5 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-2.5 reliable?
The price and inventory of AT24C01-10PI-2.5 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-2.5 is usually 5 days.
3.What payment methods are accepted for AT24C01-10PI-2.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C01-10PI-2.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C01-10PI-2.5?
AT24C01-10PI-2.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C01-10PI-2.5 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-2.5?
For technical support, including AT24C01-10PI-2.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C01-10PI-2.5 requirements.
6.How does Aetrix verify that AT24C01-10PI-2.5 is sourced from the original manufacturer or authorized distributors?
All AT24C01-10PI-2.5 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-2.5 meets industry standards.
7.What is the process for return or replacement of AT24C01-10PI-2.5?
All AT24C01-10PI-2.5 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C01-10PI-2.5, 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-2.5 part is unused and in its original packaging.
Return procedure for AT24C01-10PI-2.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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