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Microchip Technology AT24C01A-10SC-1.8
- Part No.:
- AT24C01A-10SC-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C01A-10SC-1.8.pdf
- Description:
- IC EEPROM 1KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,020
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Product details
Overview
AT24C01A-10SC-1.8 from Microchip Technology (formerly Atmel) is a 1K-bit (128 × 8) I²C-compatible serial EEPROM optimized for ultra-low-voltage embedded systems. It operates from 1.8V 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 commonly used in battery-powered IoT sensors for storing calibration data and device configuration.
For engineers reviewing the AT24C01A-10SC-1.8 datasheet, AT24C01A-10SC-1.8 pinout, AT24C01A-10SC-1.8 application, or AT24C01A-10SC-1.8 equivalent, key selection criteria include 1.8V minimum supply compatibility, 8-byte page write capability, SOIC-8 package footprint, and industrial-grade temperature range (-40°C to +85°C) confirmed for this specific ordering code.
Technical Context
The AT24C01A-10SC-1.8 implements a two-wire I²C interface with Schmitt-triggered, noise-filtered SDA and SCL inputs. Its internal memory is organized as 16 pages of 8 bytes each, requiring a 7-bit word address for random access. The device uses open-drain bidirectional SDA with external pull-up and positive-edge clocking on SCL.
Write protection is enforced by the WP pin: tied to VCC, it locks the full 1K array; tied to GND, full read/write access is enabled. Addressing uses A0–A2 pins - all hardwired for AT24C01A - enabling up to eight devices on one I²C bus. Standby current is specified at 3 µA max at 1.8V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 words × 8 bits), sufficient for firmware version stamps or small parameter sets |
| Supply Voltage Range | 1.8V to 5.5V - enables direct interfacing with 1.8V logic and mixed-voltage systems without level shifters |
| I²C Clock Frequency | 100 kHz maximum at 1.8V - ensures reliable timing margin in low-power microcontroller designs |
| Page Write Size | 8-byte page - minimizes write latency per transaction while conserving I²C bandwidth |
| Write Endurance | 1 million cycles - supports frequent recalibration or logging in field-deployed equipment |
| Data Retention | 100 years at +25°C - guarantees long-term storage integrity for unattended devices |
| Standby Current | 3 µA max at 1.8V - critical for multi-year battery life in coin-cell-powered nodes |
Pinout & Package
AT24C01A-10SC-1.8 is housed in an 8-lead JEDEC-standard SOIC package (package code 8S1), measuring 3.99 mm × 4.98 mm × 1.73 mm, with gull-wing leads and 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | Hardwired address bit; for AT24C01A, used in 3-bit device addressing to support up to 8 devices on one I²C bus |
| A1 | Device Address Input | Hardwired address bit; contributes to unique 7-bit I²C slave address (1010 A2 A1 A0) |
| A2 | Device Address Input | Hardwired address bit; completes 3-bit hardware address; all three pins are active for AT24C01A/02 |
| GND | Ground Reference | Return path for VCC and I/O; must be low-impedance to maintain noise immunity during write cycles |
| VCC | Power Supply | 1.8V–5.5V input; decoupling capacitor (0.1 µF) required within 10 mm for stable 100 kHz operation |
| WP | Write Protect Control | Active-high hardware lock: VCC = full-array protection; GND = normal read/write access |
| SCL | Serial Clock Input | Positive-edge triggered I²C clock; requires external pull-up; max 100 kHz at 1.8V |
| SDA | Serial Data I/O | Open-drain bidirectional line; requires external pull-up; supports wire-OR with other I²C devices |
Key Features
| Feature | Design Value |
|---|---|
| 1.8V Operation | Guaranteed functionality down to 1.8V supply - eliminates need for voltage translators in 1.8V SoC interfaces |
| Schmitt-Trigger Inputs | Enhanced noise immunity on SDA/SCL - prevents spurious writes in electrically noisy industrial environments |
| Hardware Write Protection | WP pin enables system-level data integrity - prevents accidental overwrites during power transitions or firmware updates |
| 8-Byte Page Writes | Reduces I²C transaction overhead - allows burst programming of configuration blocks without repeated start/stop sequences |
| 100-Year Data Retention | Ensures nonvolatile storage longevity - suitable for medical, utility metering, and infrastructure applications with >10-year service life |
Applications
| Smart Energy Metering | Industrial Sensor Node |
|---|---|
Use Scenario: Storing tariff tables, meter calibration coefficients, and tamper-event logs in utility-grade electricity meters. IC Role / Device Role / Timing Role: Nonvolatile configuration storage with guaranteed data integrity across 10+ year deployments and frequent power cycling. Use Value: 1.8V operation enables direct connection to low-power metrology SoCs; WP pin prevents corruption during brown-out conditions. |
Use Scenario: Recording sensor offset/gain values and factory calibration data in wireless vibration or temperature transmitters. IC Role / Device Role / Timing Role: Persistent parameter storage accessible via I²C during boot or maintenance mode. Use Value: 3 µA standby current extends battery life beyond 5 years; 1M endurance supports field recalibration every 3 months. |
| Medical Wearable Device | Automotive Body Control Module |
Use Scenario: Saving patient-specific therapy settings and usage history in portable ECG monitors or insulin pumps. IC Role / Device Role / Timing Role: Secure, low-voltage configuration memory compliant with IEC 62304 safety requirements. Use Value: 100-year retention meets long-term traceability mandates; SOIC-8 footprint simplifies PCB layout in space-constrained assemblies. |
Use Scenario: Storing seat position presets, mirror angles, and lighting profiles in automotive interior control units. IC Role / Device Role / Timing Role: Robust EEPROM for user preference storage across vehicle lifecycle and temperature extremes. Use Value: Industrial temperature rating (-40°C to +85°C) ensures reliability in under-dash environments; 8-byte page writes accelerate profile loading. |
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 max (at ≥2.5V), SOIC-8, 1M endurance, but no 100 kHz guarantee at 1.8V | Higher speed at 2.5V+, but less margin for 1.8V-only systems | Select if system operates ≥2.5V and requires faster writes; verify 1.8V timing compliance separately |
| BR24G01NUX-10 | 1K-bit, 1.6V–5.5V, 1 MHz max (with Fast-mode Plus), TSSOP-8, 4M endurance, but WP pin not implemented | Lacks hardware write protection; higher endurance but different package and no WP function | Choose when extended write cycles or TSSOP footprint are prioritized over hardware lock capability |
Compared with AT24C01A-10SC-1.8, M24C01-RMN6TP offers higher speed above 2.5V but weaker 1.8V timing assurance, while BR24G01NUX-10 provides superior endurance and lower voltage floor but omits the WP pin - making AT24C01A-10SC-1.8 the only option here with guaranteed 100 kHz operation *and* hardware write protection at 1.8V.
Availability
AT24C01A-10SC-1.8 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, and medical wearable devices requiring stable component supply across long production lifecycles.
Supply support for AT24C01A-10SC-1.8 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 product continuity, quality control, and long-term supply commitment for the AT24C series EEPROMs.
The AT24C01A belongs to Microchip's serial EEPROM product line, designed specifically for reliable, low-voltage, I²C-based nonvolatile storage in resource-constrained embedded systems.
FAQ
What is the maximum I²C clock frequency supported by AT24C01A-10SC-1.8?
The AT24C01A-10SC-1.8 supports up to 100 kHz I²C clock frequency when operating at 1.8V, as specified in its AC characteristics table. This limit ensures timing margin for reliable communication with low-power microcontrollers. At higher supply voltages (e.g., 2.5V+), the device can support 400 kHz, but the -1.8 suffix confirms its qualification and guaranteed performance at the 1.8V minimum.
Does AT24C01A-10SC-1.8 include hardware write protection?
Yes, AT24C01A-10SC-1.8 includes a dedicated Write Protect (WP) pin. When WP is pulled high to VCC, the entire 1K memory array is locked against writes; when grounded, full read/write access is enabled. This hardware-level protection prevents accidental or malicious overwrites during power-up, reset, or firmware updates - a critical feature for certified medical and industrial applications.
What package type is used for AT24C01A-10SC-1.8?
AT24C01A-10SC-1.8 uses an 8-lead JEDEC-standard SOIC package (package code 8S1), with 1.27 mm lead pitch, gull-wing leads, and dimensions of 3.99 mm × 4.98 mm. This surface-mount package is widely supported in automated assembly and offers better thermal and mechanical reliability than PDIP for industrial PCBs.
What is the memory organization of AT24C01A-10SC-1.8?
AT24C01A-10SC-1.8 is internally organized as 128 words of 8 bits each (1024 bits total), arranged in 16 pages of 8 bytes. This structure enables efficient 8-byte page writes and requires only a 7-bit word address for random access - reducing I²C address overhead and simplifying firmware implementation in memory-constrained MCUs.
Is AT24C01A-10SC-1.8 rated for industrial temperature operation?
Yes, AT24C01A-10SC-1.8 is qualified for industrial temperature range (-40°C to +85°C), as indicated by the "I" suffix in its full ordering matrix (e.g., AT24C01A-10SI-1.8). The "SC" denotes SOIC packaging, and the "-1.8" specifies 1.8V–5.5V operation - confirming its suitability for harsh-environment applications like factory automation and outdoor metering.
AT24C01A-10SC-1.8 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:
- 5ms
- Access Time:
- 900 ns
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C01A-10SC-1.8 FAQ
1.How can I place an order for AT24C01A-10SC-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C01A-10SC-1.8 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-10SC-1.8 reliable?
The price and inventory of AT24C01A-10SC-1.8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C01A-10SC-1.8 is usually 5 days.
3.What payment methods are accepted for AT24C01A-10SC-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C01A-10SC-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C01A-10SC-1.8?
AT24C01A-10SC-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C01A-10SC-1.8 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-10SC-1.8?
For technical support, including AT24C01A-10SC-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C01A-10SC-1.8 requirements.
6.How does Aetrix verify that AT24C01A-10SC-1.8 is sourced from the original manufacturer or authorized distributors?
All AT24C01A-10SC-1.8 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-10SC-1.8 meets industry standards.
7.What is the process for return or replacement of AT24C01A-10SC-1.8?
All AT24C01A-10SC-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C01A-10SC-1.8, 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-10SC-1.8 part is unused and in its original packaging.
Return procedure for AT24C01A-10SC-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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