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Microchip Technology AT24C16A-10PU-2.7
- Part No.:
- AT24C16A-10PU-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT24C16A-10PU-2.7.pdf
- Description:
- IC EEPROM 16KBIT I2C 400KHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,619
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Product details
Overview
AT24C16A-10PU-2.7 from Microchip Technology is a 16-Kbit (2048 × 8) two-wire serial EEPROM with 2.7V to 5.5V supply operation, 400 kHz I²C interface speed at 2.7V+, 16-byte page write capability, and hardware write protection via the WP pin. It is used for nonvolatile parameter storage in industrial controllers, power supply monitors, and embedded system configuration memory.
For engineers reviewing the AT24C16A-10PU-2.7 datasheet, AT24C16A-10PU-2.7 pinout, AT24C16A-10PU-2.7 application, or AT24C16A-10PU-2.7 equivalent, key selection factors include its 11-bit addressing depth, 128-page × 16-byte internal organization, Schmitt-triggered noise-immune inputs, self-timed 5 ms max write cycle, and JEDEC SOIC-8 package compatibility with legacy board layouts.
Technical Context
The AT24C16A-10PU-2.7 implements a standard I²C-compatible two-wire interface with open-drain SDA and edge-triggered SCL, supporting both byte and 16-byte page writes. Its address pins A0–A2 are NC (no-connect), limiting bus topology to one device per I²C segment and simplifying address decoding logic.
Internally organized as 128 pages of 16 bytes each, it uses an 11-bit data word address and supports current-address, random-address, and sequential read modes. Write protection is implemented via a dedicated WP pin that disables all write operations when pulled high to VCC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8 bits), enabling storage of up to 2 KB of calibration data, firmware flags, or device configuration. |
| Supply Voltage Range | 2.7V to 5.5V - compatible with 3.3V and 5V logic systems without level shifting. |
| I²C Clock Frequency | 400 kHz at VCC ≥ 2.7V - supports faster parameter updates than 100 kHz legacy EEPROMs. |
| Page Write Size | 16 bytes per page - reduces I²C transaction count by 2× vs. 8-byte page devices for bulk writes. |
| Write Cycle Time | 5 ms maximum - defines minimum inter-write interval; critical for real-time logging timing budgets. |
| Data Retention | 100 years - ensures long-term reliability in unattended equipment like utility meters or remote sensors. |
| Endurance | 1 million write cycles - supports frequent recalibration or event logging in industrial HMI applications. |
Pinout & Package
AT24C16A-10PU-2.7 is supplied in an 8-lead JEDEC SOIC (8S1) package, 0.150" wide body, RoHS-compliant and green-marked ("U"). Pin 1 is marked with a notch or dot; leads are gull-wing shaped for standard reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | No-connect (NC); internally tied off - eliminates external pull-up/down resistors and simplifies PCB layout. |
| A1 | Device Address Input | No-connect (NC); enables single-device-per-bus operation without address conflicts. |
| A2 | Device Address Input | No-connect (NC); removes need for address strapping and reduces BOM count. |
| GND | Ground Reference | Primary return path for VCC and I/O; must be low-impedance to support noise immunity of Schmitt-trigger inputs. |
| VCC | Power Supply | 2.7V–5.5V input; powers internal charge pump for EEPROM write operations and logic circuitry. |
| WP | Write Protect Control | Hardware-enforced write disable when high; prevents accidental overwrites during power transients or firmware faults. |
| SCL | Serial Clock Input | Positive-edge clock for data sampling; requires external pull-up; tolerant of slow rise/fall times per I²C spec. |
| SDA | Serial Data I/O | Open-drain bidirectional line; shared across multiple I²C devices; requires external pull-up resistor. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger, filtered inputs | Rejects >100 ns noise spikes on SCL/SDA - eliminates false clocking in electrically noisy motor-control or power-conversion environments. |
| 16-byte page write mode | Reduces required I²C START/STOP sequences by 50% vs. 8-byte pages - lowers CPU overhead and bus occupancy in microcontroller-based systems. |
| Self-timed write cycle | Automatically manages internal programming voltage and timing - relieves host MCU of write-cycle polling or fixed delays. |
| Hardware write protection (WP) | Prevents corruption during brown-out, reset, or software crash - critical for safety-critical configuration storage in medical or industrial gear. |
| 100-year data retention | Guarantees parameter integrity over full product lifecycle - eliminates field recalibration needs in sealed or inaccessible deployments. |
Applications
| Industrial PLC Configuration Storage | Smart Power Supply Calibration Memory |
|---|---|
Use Scenario: Storing user-defined I/O mapping, PID tuning parameters, and alarm thresholds in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register bank accessed via I²C during boot and runtime parameter updates. Use Value: Enables field-reprogrammable behavior without firmware update; 16-byte page writes accelerate batch parameter loading. |
Use Scenario: Holding factory-trimmed voltage/current reference offsets and thermal compensation coefficients in digitally controlled AC-DC supplies. IC Role / Device Role / Timing Role: Calibration data repository with WP pin hardwired to VCC after initial programming to prevent drift-induced corruption. Use Value: Maintains ±0.5% output accuracy over 10+ years without recalibration; 1M endurance supports periodic auto-calibration cycles. |
| Medical Device Usage Log | Embedded Gateway Network Settings |
Use Scenario: Recording cumulative operating hours, fault events, and maintenance intervals in portable diagnostic equipment. IC Role / Device Role / Timing Role: Event-logged data sink using sequential writes; powered from backup coin cell during main power loss. Use Value: Survives >100,000 power cycles; 2.7V min operation ensures reliable logging even under weak battery conditions. |
Use Scenario: Storing Wi-Fi SSID/password, MQTT broker addresses, and TLS certificate fingerprints in IoT edge gateways. IC Role / Device Role / Timing Role: Secure boot-time credential loader; WP pin controlled by secure MCU GPIO to lock settings post-provisioning. Use Value: Prevents unauthorized network reconfiguration; 400 kHz I²C speed enables fast credential load during cold boot (<100 ms). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C16B-SSHM-T | Successor part with enhanced ESD rating (4 kV HBM), same 16Kbit density, SOIC-8, and 2.5V–5.5V range; A0–A2 remain NC. | Preferred for new designs requiring higher robustness in harsh ESD environments (e.g., factory floor HMIs). | Select AT24C16B-SSHM-T when designing for production release after Q3 2023; AT24C16A-10PU-2.7 remains valid for legacy repair or cost-sensitive volume builds. |
| BR24G16FJ-WE2 | Rohm 16Kbit I²C EEPROM in SOP-8; 1.7V–5.5V range, 1 MHz max clock, 16-byte page, but uses different write-protection scheme (software-controlled WP bit). | Suitable where higher-speed I²C or extended low-voltage operation down to 1.7V is needed, but requires firmware modification for WP control. | Choose BR24G16FJ-WE2 only if migrating to 1 MHz I²C or sub-2.7V operation; AT24C16A-10PU-2.7 offers simpler hardware WP and broader design documentation support. |
Compared with AT24C16B-SSHM-T, AT24C16A-10PU-2.7 lacks enhanced ESD protection but offers identical pinout and timing for drop-in replacement in existing boards; versus BR24G16FJ-WE2, it provides deterministic hardware write protection without firmware dependency but limits clock speed to 400 kHz.
Availability
AT24C16A-10PU-2.7 is available at Aetrix Electronics and suitable for industrial PLCs, smart power supplies, medical usage loggers, and embedded gateways requiring stable component supply across multi-year production cycles.
Supply support for AT24C16A-10PU-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 is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and nonvolatile memory solutions for industrial, automotive, and communications markets.
The AT24C16A-10PU-2.7 belongs to Microchip's AT24Cxx family of I²C-compatible serial EEPROMs, designed specifically for reliable, low-power, and space-constrained nonvolatile data storage in embedded systems.
FAQ
What is the maximum I²C clock frequency supported by AT24C16A-10PU-2.7?
The AT24C16A-10PU-2.7 supports up to 400 kHz I²C clock frequency when operated at VCC ≥ 2.7V. At lower voltages (e.g., 1.8V), the maximum clock rate drops to 100 kHz - but AT24C16A-10PU-2.7 is rated for 2.7V–5.5V operation, so 400 kHz is its guaranteed maximum. This allows faster parameter updates than legacy 100 kHz EEPROMs without compromising signal integrity.
Does AT24C16A-10PU-2.7 require external pull-up resistors on SDA and SCL lines?
Yes, AT24C16A-10PU-2.7 requires external pull-up resistors on both SDA and SCL lines because its I/O structure uses open-drain outputs. Typical values range from 1.8 kΩ (for 400 kHz, 3.3V) to 4.7 kΩ (for 100 kHz, 5V). The AT24C16A-10PU-2.7 datasheet specifies input leakage ≤3.0 µA, ensuring reliable logic-level establishment with standard resistor values.
How is write protection implemented on AT24C16A-10PU-2.7?
AT24C16A-10PU-2.7 implements hardware write protection via the WP (Write Protect) pin: when WP is driven high to VCC, all write operations - including byte, page, and erase - are disabled. When WP is grounded, normal read/write functionality resumes. This behavior is fully hardware-based and requires no firmware intervention, making AT24C16A-10PU-2.7 ideal for fail-safe configuration storage.
What package type is used for AT24C16A-10PU-2.7?
AT24C16A-10PU-2.7 uses an 8-lead JEDEC SOIC (8S1) package, 0.150" wide body, with gull-wing leads and RoHS-compliant "green" finish ("U" suffix). Its footprint matches industry-standard SOIC-8 land patterns, enabling direct replacement of legacy EEPROMs and compatibility with automated SMT assembly processes.
Can multiple AT24C16A-10PU-2.7 devices share the same I²C bus?
No - AT24C16A-10PU-2.7 has no functional device address pins (A0–A2 are NC), so only one AT24C16A-10PU-2.7 can reside on a given I²C bus segment. To expand capacity, use devices with addressable variants (e.g., AT24C08A with A2 pin) or implement I²C multiplexing. This limitation simplifies address decoding but constrains topology flexibility compared to addressable EEPROM families.
AT24C16A-10PU-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:
- 16Kbit
- Memory Organization:
- 2K x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 400 kHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 4.5 µs
- Voltage - Supply:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT24C16A-10PU-2.7 FAQ
1.How can I place an order for AT24C16A-10PU-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C16A-10PU-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 AT24C16A-10PU-2.7 reliable?
The price and inventory of AT24C16A-10PU-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 AT24C16A-10PU-2.7 is usually 5 days.
3.What payment methods are accepted for AT24C16A-10PU-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C16A-10PU-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C16A-10PU-2.7?
AT24C16A-10PU-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C16A-10PU-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 AT24C16A-10PU-2.7?
For technical support, including AT24C16A-10PU-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C16A-10PU-2.7 requirements.
6.How does Aetrix verify that AT24C16A-10PU-2.7 is sourced from the original manufacturer or authorized distributors?
All AT24C16A-10PU-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 AT24C16A-10PU-2.7 meets industry standards.
7.What is the process for return or replacement of AT24C16A-10PU-2.7?
All AT24C16A-10PU-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C16A-10PU-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 AT24C16A-10PU-2.7 part is unused and in its original packaging.
Return procedure for AT24C16A-10PU-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT24C16A-10PU-2.7 Tags
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