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Microchip Technology AT24C01A-10SC
- Part No.:
- AT24C01A-10SC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C01A-10SC.pdf
- Description:
- IC EEPROM 1KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,242
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Product details
Overview
AT24C01A-10SC from Microchip Technology (formerly Atmel) is a 1K-bit (128 × 8) two-wire serial EEPROM with 2.7V to 5.5V supply operation, 100 kHz I²C interface speed, 8-byte page write capability, and hardware write protection via the WP pin. It is used for nonvolatile parameter storage in embedded microcontroller systems requiring low-power, space-constrained, and industrial-grade data retention.
For engineers reviewing the AT24C01A-10SC datasheet, AT24C01A-10SC pinout, AT24C01A-10SC application, or AT24C01A-10SC equivalent, key selection criteria include its 2.7–5.5 V operating range, 10 ms max write cycle time, 1 million endurance cycles, 100-year data retention, and compatibility with standard I²C bus timing at 100 kHz under low-voltage conditions.
Technical Context
The AT24C01A-10SC implements a standard I²C-compatible two-wire serial interface with open-drain SDA and Schmitt-triggered SCL inputs for noise immunity. It uses hard-wired A0–A2 address pins to support up to eight devices on a shared bus, with device addressing confirmed for 1K/2K variants per datasheet Figure 1 and Table.
Internally organized as 16 pages of 8 bytes each, it supports byte-write and 8-byte page-write modes with automatic address incrementing within the current page. Write protection is enforced by the WP pin: tied to VCC, it locks the full 1K array; tied to GND, normal read/write operations proceed.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 × 8), sufficient for calibration constants, configuration flags, or small firmware state logs |
| Supply Voltage Range | 2.7V to 5.5V - enables direct interfacing with 3.3V and 5V microcontrollers without level shifting |
| I²C Clock Frequency | 100 kHz maximum - ensures reliable timing margins in noisy industrial environments |
| Write Cycle Time | 10 ms maximum - defines minimum interval between successive writes; impacts real-time logging latency |
| Endurance | 1 million write cycles - supports frequent updates over product lifetime (e.g., metering or sensor calibration) |
| Data Retention | 100 years at +25°C - guarantees long-term validity of stored settings without refresh |
| Standby Current | 1.6 µA max at 2.7V - minimizes battery drain in always-on portable or IoT edge nodes |
Pinout & Package
AT24C01A-10SC is supplied in an 8-lead JEDEC SOIC package (package code 8S1), measuring 3.99 mm × 4.98 mm × 1.75 mm, with gull-wing leads and 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | Hard-wired LSB of 3-bit device address; enables up to eight AT24C01A-10SC units on one I²C bus |
| A1 | Device Address Input | Mid-bit of device address; must match external pull-up/pull-down to select unique slave address |
| A2 | Device Address Input | MSB of device address; determines position in 0x50–0x57 I²C address range |
| GND | Ground Reference | Return path for all internal circuitry and I/O; requires low-impedance connection to system ground plane |
| VCC | Power Supply | Primary power input; must be decoupled with ≥0.1 µF ceramic capacitor near pin |
| WP | Write Protect Control | Active-high hardware lock: logic high disables all write operations to entire memory array |
| SCL | Serial Clock Input | Master-generated clock signal; Schmitt-triggered for robust noise rejection in electrically harsh environments |
| SDA | Serial Data I/O | Open-drain bidirectional bus line; requires external pull-up resistor (typically 2.2–10 kΩ) |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation | Functional down to 2.7V VCC - eliminates need for voltage regulators in 3.3V systems |
| Schmitt-trigger inputs | Enhanced noise immunity on SCL and SDA - reduces spurious start/stop detection in EMI-prone applications |
| Hardware write protection | WP pin enables irreversible lock of memory contents during field deployment or firmware update |
| Page write mode | 8-byte burst writes reduce I²C transaction overhead by 87% vs. individual byte writes |
| High-reliability EEPROM | 1M write cycles and 100-year retention validated per JEDEC JESD22-A117 - suitable for mission-critical storage |
Applications
| Industrial Sensor Calibration | Consumer Appliance Settings |
|---|---|
Use Scenario: Storing factory-trimmed offset/gain coefficients and temperature compensation tables for analog sensor front-ends. IC Role / Device Role / Timing Role: Nonvolatile configuration store accessed once at power-up; no real-time timing constraints. Use Value: Enables plug-and-play sensor replacement without host MCU reprogramming; retains calibration across power loss. | Use Scenario: Preserving user-selected preferences (e.g., cooking mode, temperature, timer) in smart ovens and washing machines. IC Role / Device Role / Timing Role: Low-frequency parameter storage updated only on UI interaction; operates in standby >99.9% of time. Use Value: Delivers persistent settings with <1.6 µA quiescent current - extends battery backup life beyond 10 years. |
| Medical Device Configuration | Automotive Body Control Module |
Use Scenario: Holding regulatory-compliant operational limits, usage counters, and audit logs in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure, tamper-resistant storage; WP pin wired to system security controller for runtime lock. Use Value: Meets IEC 62304 data integrity requirements via hardware write disable and 100-year retention. | Use Scenario: Saving seat/mirror position memory, lighting profiles, and door lock status in 12V automotive subsystems. IC Role / Device Role / Timing Role: Interface directly to 3.3V CAN/LIN microcontroller; withstands load-dump transients via internal clamp diodes. Use Value: Eliminates external level shifters and reduces BOM count while supporting -40°C to +85°C extended temperature grade. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C02-10SC-2.7 | 2K-bit capacity (256 × 8); identical 2.7–5.5V range, 100 kHz speed, SOIC-8 package | Supports larger configuration sets; requires updated address mapping in firmware | Select when future firmware expansion or dual-parameter banks are anticipated |
| M24C01-RMN6TP | 1K-bit, 1.7–5.5V supply, 400 kHz max I²C speed, same SOIC-8 footprint | Higher speed and wider voltage range; not qualified for automotive temp grades | Prefer for cost-sensitive consumer designs needing faster writes but no industrial temp requirement |
Compared with AT24C01A-10SC, AT24C02-10SC-2.7 doubles memory depth with identical pinout and voltage profile, while M24C01-RMN6TP offers higher-speed operation and broader VCC range but lacks extended temperature validation - making AT24C01A-10SC optimal for industrial reliability-critical use cases.
Availability
AT24C01A-10SC is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device configuration, automotive body control modules, and consumer appliance settings requiring stable component supply across production lifecycles.
Supply support for AT24C01A-10SC 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 qualification coverage.
The AT24C01A-10SC belongs to Microchip's legacy AT24Cxx serial EEPROM family, designed specifically for robust, low-power, I²C-based parameter storage in space- and energy-constrained embedded systems.
FAQ
What is the maximum I²C clock frequency supported by the AT24C01A-10SC?
The AT24C01A-10SC supports up to 100 kHz I²C clock frequency when operated within its 2.7V to 5.5V supply range. This is specified in the AC Characteristics table under fSCL for the "2.7-, 2.5-, 1.8-volt" column. Higher speeds (e.g., 400 kHz) apply only to 5.0V-only variants like AT24C01A-10PC, not the -2.7 suffix variant.
Does the AT24C01A-10SC require external pull-up resistors on SDA and SCL lines?
Yes, the AT24C01A-10SC requires external pull-up resistors on both SDA and SCL lines because its SDA pin is open-drain and SCL is Schmitt-triggered 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 ≤400 pF total bus capacitance.
How does the Write Protect (WP) pin function on the AT24C01A-10SC?
On the AT24C01A-10SC, the WP pin provides hardware-level write protection: when pulled high to VCC, it disables all write operations to the full 1K memory array; when grounded, normal read and write functions operate. This behavior is confirmed in the Pin Description and WP Pin Status table, and applies regardless of I²C command sequence.
What package type is used for the AT24C01A-10SC?
The AT24C01A-10SC uses an 8-lead JEDEC SOIC package (package code 8S1), with 1.27 mm lead pitch, 3.99 mm × 4.98 mm body dimensions, and gull-wing surface-mount leads. This matches the "8S1" designation in the Ordering Information table and is distinct from PDIP (8P3) and TSSOP (8T) variants.
Is the AT24C01A-10SC rated for industrial temperature operation?
No, the AT24C01A-10SC is rated for commercial temperature range (0°C to +70°C), as indicated by the "Commercial" entry in the Ordering Information table for the -10SC and -10SC-2.7 variants. For industrial operation (-40°C to +85°C), the correct part is AT24C01A-10SI-2.7 (SOIC) or AT24C01A-10PI-2.7 (PDIP).
AT24C01A-10SC 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:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C01A-10SC FAQ
1.How can I place an order for AT24C01A-10SC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C01A-10SC 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 reliable?
The price and inventory of AT24C01A-10SC 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 is usually 5 days.
3.What payment methods are accepted for AT24C01A-10SC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C01A-10SC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C01A-10SC?
AT24C01A-10SC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C01A-10SC 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?
For technical support, including AT24C01A-10SC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C01A-10SC requirements.
6.How does Aetrix verify that AT24C01A-10SC is sourced from the original manufacturer or authorized distributors?
All AT24C01A-10SC 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 meets industry standards.
7.What is the process for return or replacement of AT24C01A-10SC?
All AT24C01A-10SC units undergo pre-shipment inspection (PSI). If there is an issue with AT24C01A-10SC, 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 part is unused and in its original packaging.
Return procedure for AT24C01A-10SC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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