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Microchip Technology AT24C01A-10PC-2.7
- Part No.:
- AT24C01A-10PC-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT24C01A-10PC-2.7.pdf
- Description:
- IC EEPROM 1KBIT I2C 400KHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,282
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Product details
Overview
AT24C01A-10PC-2.7 from Microchip Technology (formerly Atmel) is a 1K-bit (128 × 8) two-wire serial EEPROM optimized for low-voltage embedded systems. It operates from 2.7V to 5.5V, supports 100 kHz I²C bus speed, features hardware write protection via WP pin, and delivers 1 million write cycles with 100-year data retention. It is used in set-top boxes for configuration storage, smart meters for tariff/log data backup, and industrial PLCs for parameter persistence.
For engineers reviewing the AT24C01A-10PC-2.7 datasheet, AT24C01A-10PC-2.7 pinout, AT24C01A-10PC-2.7 application, or AT24C01A-10PC-2.7 equivalent, key selection factors include its 2.7V–5.5V supply range, 8-byte page write capability, SOIC-8 package compatibility, and I²C timing compliance at 100 kHz under low-voltage conditions.
Technical Context
The AT24C01A-10PC-2.7 implements a standard two-wire (I²C-compatible) interface with open-drain SDA and Schmitt-triggered SCL inputs for noise immunity. Its internal memory is organized as 16 pages of 8 bytes each, requiring a 7-bit word address for random access.
Device addressing uses A0–A2 pins (hard-wired), enabling up to eight AT24C01A devices on one bus. Write protection is controlled by the WP pin: tied to GND for full read/write access, or to VCC to lock the entire 1K array against writes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 × 8), sufficient for small firmware config tables or calibration constants |
| Supply Voltage Range | 2.7V to 5.5V - enables direct interfacing with 3.3V microcontrollers without level shifters |
| I²C Clock Frequency | 100 kHz max - compliant with standard-mode I²C timing at 2.7V operation |
| Write Cycle Time | 10 ms max - defines minimum interval between successive byte/page writes |
| Endurance | 1 million write cycles - supports frequent logging or counter updates over product lifetime |
| Data Retention | 100 years at +25°C - ensures long-term reliability in unpowered storage applications |
| Standby Current | 4 µA max at 2.7V - minimizes battery drain in always-on or energy-harvesting systems |
Pinout & Package
AT24C01A-10PC-2.7 is supplied in an 8-pin PDIP (Plastic Dual Inline Package), 0.300" wide, with JEDEC-standard pinout and through-hole mounting compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | Hard-wired LSB of 3-bit device address; enables multi-device I²C bus configuration |
| A1 | Device Address Input | Mid-bit of device address; allows up to eight AT24C01A units on same I²C bus |
| A2 | Device Address Input | MSB of device address; determines unique slave address (0x50–0x57) |
| GND | Ground Reference | Return path for VCC and signal logic; must be low-impedance for noise immunity |
| VCC | Power Supply | Primary power input; accepts 2.7V–5.5V; decoupling capacitor required near pin |
| WP | Write Protect Control | Active-high hardware lock: VCC = full-array protection, GND = normal R/W operation |
| SCL | Serial Clock Input | Master-generated clock; Schmitt-triggered for robust edge detection in noisy environments |
| SDA | Serial Data I/O | Open-drain bidirectional line; requires external pull-up resistor (typically 2.2–10 kΩ) |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation | Functional down to 2.7V supply - eliminates need for voltage regulators in 3.3V systems |
| Hardware write protection | WP pin disables all write operations when pulled high - prevents accidental firmware corruption |
| Page write mode | 8-byte burst writes reduce I²C transaction overhead vs. single-byte writes |
| Noise-immune inputs | Schmitt-triggered SCL and filtered inputs suppress EMI-induced glitches in industrial settings |
| High endurance & retention | 1M write cycles and 100-year data hold meet industrial-grade field-reliability requirements |
Applications
| Smart Energy Meters | Industrial PLC Configuration |
|---|---|
Use Scenario: Storing tariff schedules, metering logs, and tamper-event timestamps across power outages. IC Role / Device Role / Timing Role: Nonvolatile configuration and event-history storage with guaranteed data integrity during brownouts. Use Value: 100-year retention and 1M write cycles ensure decade-long field deployment without data loss or wear-out. |
Use Scenario: Saving user-defined I/O mapping, PID tuning parameters, and alarm thresholds in programmable logic controllers. IC Role / Device Role / Timing Role: Persistent parameter storage accessible via microcontroller's I²C peripheral during boot or runtime reconfiguration. Use Value: Hardware WP pin prevents unintended parameter overwrite during firmware updates or debug sessions. |
| Consumer Set-Top Boxes | Medical Diagnostic Sensors |
Use Scenario: Retaining channel lineup, parental control settings, and last-viewed state after AC power removal. IC Role / Device Role / Timing Role: Low-power serial EEPROM interfaced directly to SoC's I²C controller for fast, deterministic config reads. Use Value: 4 µA standby current at 2.7V extends battery backup life in uninterruptible power scenarios. |
Use Scenario: Storing calibrated sensor offsets, patient-specific thresholds, and usage history in portable diagnostic tools. IC Role / Device Role / Timing Role: Secure, nonvolatile memory for safety-critical calibration data with hardware write-lock enforcement. Use Value: WP pin tied to system security controller ensures calibration data cannot be altered outside authorized service mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C02A-10PC-2.7 | 2K-bit capacity (256 × 8), identical 2.7V–5.5V range, same SOIC/PDIP packages and pinout | Supports larger configuration sets; requires no PCB change but may need firmware address-space adjustment | Select when future firmware expansion or additional parameter storage is anticipated |
| M24C01-RMN6TP | 1K-bit, 1.8V–5.5V supply, 400 kHz max I²C speed, TSSOP-8 package, different pin 1 marking | Broadens voltage headroom and increases bus speed; TSSOP requires layout adaptation vs. PDIP | Choose for space-constrained designs needing higher-speed I²C or 1.8V compatibility |
Compared with AT24C01A-10PC-2.7, AT24C02A-10PC-2.7 offers double memory without altering voltage or footprint, while M24C01-RMN6TP trades PDIP compatibility for wider voltage range and faster I²C - both require validation of WP behavior and timing margins in target systems.
Availability
AT24C01A-10PC-2.7 is available at Aetrix Electronics and suitable for smart metering, industrial automation, consumer electronics, and medical diagnostics requiring stable component supply across extended production lifecycles.
Supply support for AT24C01A-10PC-2.7 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 acquired Atmel in 2016 and maintains full technical and manufacturing continuity for the AT24C series EEPROMs.
The AT24C01A belongs to Microchip's serial EEPROM product line, designed specifically for reliable, low-power, I²C-based nonvolatile storage in cost-sensitive embedded systems.
FAQ
What is the maximum I²C clock frequency supported by AT24C01A-10PC-2.7?
The AT24C01A-10PC-2.7 supports up to 100 kHz I²C clock frequency when operating within its 2.7V–5.5V supply range. This is specified in the AC Characteristics table under fSCL for 2.7V operation. Higher speeds (e.g., 400 kHz) require ≥4.5V supply and are not valid for this -2.7 variant. The 100 kHz limit ensures timing margin compliance with tLOW, tHIGH, and tSU.STA under low-voltage conditions.
Does AT24C01A-10PC-2.7 support partial page writes?
Yes, AT24C01A-10PC-2.7 supports partial page writes: up to 8 bytes can be written in a single page-write transaction, starting at any byte address within a page boundary. The internal address counter auto-increments per byte, wrapping within the 8-byte page if exceeded. This reduces I²C overhead compared to individual byte writes and is confirmed in the "Page Write" section of the datasheet.
How does the Write Protect (WP) pin function on AT24C01A-10PC-2.7?
On AT24C01A-10PC-2.7, the WP pin provides hardware-level write inhibition. When WP is tied to VCC, the entire 1K-bit memory array is locked against all write operations (byte, page, or erase). When WP is grounded, full read/write access is enabled. This behavior is electrically enforced and does not depend on firmware or I²C commands - it is a physical gate on the write path.
What package type is used for AT24C01A-10PC-2.7?
AT24C01A-10PC-2.7 uses an 8-pin PDIP (Plastic Dual Inline Package), 0.300" wide, designated as package code 8P3 per Atmel's ordering information. This through-hole package is compatible with wave soldering and manual prototyping, and matches JEDEC MS-001BA mechanical standards.
Is AT24C01A-10PC-2.7 rated for industrial temperature range?
No, AT24C01A-10PC-2.7 is specified for commercial temperature range (0°C to +70°C), as indicated by the "C" suffix in the ordering code. For industrial operation (-40°C to +85°C), the correct part is AT24C01A-10PI-2.7. Using AT24C01A-10PC-2.7 outside 0°C–70°C may result in timing violations or data corruption.
AT24C01A-10PC-2.7 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:
- 5ms
- Access Time:
- 900 ns
- Voltage - Supply:
- 2.7V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT24C01A-10PC-2.7 FAQ
1.How can I place an order for AT24C01A-10PC-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C01A-10PC-2.7 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 AT24C01A-10PC-2.7 reliable?
The price and inventory of AT24C01A-10PC-2.7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C01A-10PC-2.7 is usually 5 days.
3.What payment methods are accepted for AT24C01A-10PC-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C01A-10PC-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C01A-10PC-2.7?
AT24C01A-10PC-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C01A-10PC-2.7 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 AT24C01A-10PC-2.7?
For technical support, including AT24C01A-10PC-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C01A-10PC-2.7 requirements.
6.How does Aetrix verify that AT24C01A-10PC-2.7 is sourced from the original manufacturer or authorized distributors?
All AT24C01A-10PC-2.7 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 AT24C01A-10PC-2.7 meets industry standards.
7.What is the process for return or replacement of AT24C01A-10PC-2.7?
All AT24C01A-10PC-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C01A-10PC-2.7, 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 AT24C01A-10PC-2.7 part is unused and in its original packaging.
Return procedure for AT24C01A-10PC-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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