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Microchip Technology AT24C16N-10SI-1.8
- Part No.:
- AT24C16N-10SI-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C16N-10SI-1.8.pdf
- Description:
- IC EEPROM 16KBIT I2C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,246
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Product details
Overview
AT24C16N-10SI-1.8 from Microchip Technology (formerly Atmel) is a 16-Kbit (2048 × 8) I²C-compatible serial EEPROM optimized for low-voltage embedded systems. It operates from 1.8V to 5.5V, supports 100 kHz I²C communication at 1.8V, features hardware write protection via the WP pin, and delivers 1 million write cycles with 100-year data retention. It is used in industrial control modules for parameter storage and calibration data backup.
For engineers reviewing the AT24C16N-10SI-1.8 datasheet, AT24C16N-10SI-1.8 pinout, AT24C16N-10SI-1.8 application, or AT24C16N-10SI-1.8 equivalent, key selection criteria include 1.8V minimum supply compatibility, 16-byte page write capability, SOIC-8 package footprint, and WP-enabled hardware-level data integrity in power-constrained environments.
Technical Context
The AT24C16N-10SI-1.8 implements a standard two-wire I²C interface with open-drain SDA and Schmitt-triggered SCL inputs for noise immunity. Its internal memory is organized as 128 pages of 16 bytes each, requiring an 11-bit word address for random access.
It uses no device address pins (A0–A2 are NC), limiting bus topology to one AT24C16 per I²C segment. Write protection is controlled solely by the WP pin state-logic high disables all writes to the full 16K array, while logic low enables normal read/write operations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8 bits), sufficient for storing firmware configuration tables or sensor calibration coefficients in compact microcontroller systems. |
| Supply Voltage Range | 1.8V to 5.5V - enables direct interfacing with 1.8V logic families and battery-powered devices without level-shifting. |
| I²C Clock Frequency | 100 kHz at 1.8V - ensures reliable timing margin under low-voltage operation, critical for stable communication in energy-harvesting or coin-cell applications. |
| Page Write Size | 16-byte page - reduces write transaction overhead compared to byte-write mode, improving efficiency when updating multi-byte parameters like PID settings. |
| Write Endurance | 1 million write cycles - supports frequent field updates (e.g., metering logs or event counters) over extended product lifetimes. |
| Data Retention | 100 years at +25°C - guarantees long-term nonvolatile storage of critical system identifiers or cryptographic keys without refresh. |
| Operating Temperature | -40°C to +85°C - qualified for industrial-grade deployment in programmable logic controllers and motor drives. |
Pinout & Package
AT24C16N-10SI-1.8 is supplied in an 8-lead JEDEC SOIC (8S1) package measuring 5.0 mm × 4.0 mm × 1.5 mm, compatible with standard surface-mount reflow processes and legacy PCB footprints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0, A1, A2 | No Connect (NC) | Not used for device addressing - eliminates external pull-up/down resistors and simplifies layout on single-device I²C buses. |
| SDA | Serial Data I/O | Open-drain bidirectional line - requires external pull-up resistor; supports wire-OR with other I²C peripherals on shared bus. |
| SCL | Serial Clock Input | Schmitt-triggered input - rejects high-frequency noise and ensures robust clock edge detection across voltage and temperature ranges. |
| WP | Write Protect Control | Hardware-enforced write lock - tied to VCC to prevent accidental or malicious firmware corruption during power-up or brown-out events. |
| GND | Ground Reference | Signal and power return path - must be low-impedance and decoupled near VCC pin to maintain I²C signal integrity. |
| VCC | Power Supply | Primary supply input - accepts 1.8–5.5V; bypass capacitor (0.1 µF ceramic) required between VCC and GND for noise suppression. |
Key Features
| Feature | Design Value |
|---|---|
| 1.8V Operation Support | Enables integration into ultra-low-power systems (e.g., IoT sensors) without voltage translation circuitry. |
| 16-Byte Page Write | Reduces I²C transaction count by up to 16× versus byte-write mode, lowering CPU overhead and bus occupancy time. |
| Hardware Write Protection | Prevents unintended writes during power transitions or software faults - critical for safety-critical configuration storage. |
| Schmitt-Trigger Inputs | Improves noise immunity on SCL/SDA lines in electrically noisy industrial environments (e.g., near motor drivers). |
| 100-Year Data Retention | Eliminates need for periodic data refresh or backup power sources in maintenance-free deployments. |
Applications
| Industrial PLC Configuration Storage | Smart Meter Calibration Data Backup |
|---|---|
Use Scenario: Storing user-defined I/O mapping, scaling factors, and alarm thresholds in programmable logic controllers operating in factory-floor environments. IC Role / Device Role / Timing Role: Nonvolatile configuration register - retains settings across power cycles and supports infrequent updates via host MCU I²C commands. Use Value: Enables field reconfiguration without firmware reload; 1.8V operation allows direct connection to 3.3V or 1.8V PLC mainboards. | Use Scenario: Preserving metrology calibration constants and tamper-event logs in utility smart meters deployed for >10 years. IC Role / Device Role / Timing Role: Secure parameter vault - WP pin hardwired to VCC during production to prevent runtime corruption of certified calibration data. Use Value: Meets ANSI C12.20 and IEC 62056 requirements for data integrity; 1M endurance supports daily log writes for >27 years. |
| Medical Device Settings Retention | Automotive Body Control Module NVM |
Use Scenario: Saving user-adjusted therapy parameters (e.g., infusion rate limits, alarm volumes) in portable medical pumps with battery backup. IC Role / Device Role / Timing Role: Low-power persistent memory - draws ≤3.0 µA standby current at 1.8V to extend battery life between charges. Use Value: Eliminates need for supercapacitor-based backup; 100-year retention ensures lifetime data validity without service intervention. | Use Scenario: Storing seat position presets, mirror angles, and lighting profiles in automotive body control units (BCUs). IC Role / Device Role / Timing Role: Automotive-grade NVM - qualified to -40°C to +85°C and supports 100 kHz I²C even during cold cranking (low-battery conditions). Use Value: Enables seamless personalization across vehicle platforms using standardized SOIC-8 footprint; WP pin prevents ECU reset-induced overwrites. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C16A-10SI-1.8 | Successor with enhanced reliability testing and updated process; identical pinout, timing, and electrical specs. | Recommended for new designs per manufacturer notice; same industrial temp range and SOIC-8 package. | Select when long-term supply assurance and latest qualification data are required. |
| M24C16-RMN6TP | STMicroelectronics 16-Kbit EEPROM; supports 400 kHz at 1.8V (vs. 100 kHz for AT24C16N), same SOIC-8 package. | Better speed for high-throughput logging; different WP behavior (active-low vs. active-high on AT24C16N). | Choose for faster write throughput where WP logic can be adapted in firmware. |
Compared with AT24C16N-10SI-1.8, AT24C16A-10SI-1.8 offers identical functionality with improved manufacturing traceability, while M24C16-RMN6TP provides higher I²C speed but requires validation of write-protect signal polarity in system design.
Availability
AT24C16N-10SI-1.8 is available at Aetrix Electronics and suitable for industrial control, smart metering, medical device, and automotive body electronics requiring stable component supply and long-lifecycle support.
Supply support for AT24C16N-10SI-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 is a global semiconductor company specializing in microcontrollers, analog devices, and memory solutions, with a focus on embedded control and connectivity.
The AT24Cxx family was designed for cost-sensitive, space-constrained applications needing reliable, low-voltage serial EEPROM - especially in industrial automation, metering, and consumer electronics where board area and power budget are tightly constrained.
FAQ
What is the maximum I²C clock frequency supported by AT24C16N-10SI-1.8 at 1.8V?
The AT24C16N-10SI-1.8 supports a maximum I²C clock frequency of 100 kHz when operating at 1.8V. This is specified in the AC Characteristics table of the official datasheet (0180R–SEEPR–4/04). At higher supply voltages (2.5V, 2.7V, or 5V), it supports up to 400 kHz - but for AT24C16N-10SI-1.8 specifically, the -1.8 suffix denotes optimization for 1.8V operation, and 100 kHz is its guaranteed maximum at that voltage.
Does AT24C16N-10SI-1.8 require external pull-up resistors on SDA and SCL lines?
Yes, AT24C16N-10SI-1.8 requires external pull-up resistors on both SDA and SCL lines because its I²C interface uses open-drain outputs. The datasheet specifies typical values of 4.7 kΩ for standard-mode (100 kHz) operation. These resistors ensure proper logic high levels and meet rise-time requirements defined in the I²C specification - a critical requirement for reliable communication in any system using AT24C16N-10SI-1.8.
What is the function of the WP pin on AT24C16N-10SI-1.8, and how should it be connected?
The WP (Write Protect) pin on AT24C16N-10SI-1.8 enables hardware-level write inhibition. When WP is tied to VCC, the entire 16K memory array is write-protected; when grounded, normal read/write operations are permitted. For most applications, WP is hardwired to VCC or controlled by a system supervisor IC. This behavior is explicitly documented for AT24C16N-10SI-1.8 in the "WP Pin" section of the datasheet, ensuring data integrity during unexpected resets or firmware errors.
Is AT24C16N-10SI-1.8 pin-compatible with AT24C16A-10SI-1.8?
Yes, AT24C16N-10SI-1.8 is pin-compatible with AT24C16A-10SI-1.8 - both use the same 8-lead JEDEC SOIC (8S1) package with identical pin assignments (A0–A2 = NC, SDA, SCL, WP, GND, VCC). The AT24C16A is the designated replacement per Microchip's notice, maintaining full electrical and functional equivalence. No PCB changes are required when migrating from AT24C16N-10SI-1.8 to AT24C16A-10SI-1.8.
What memory organization does AT24C16N-10SI-1.8 use, and how does it affect addressing?
AT24C16N-10SI-1.8 is internally organized as 2048 words × 8 bits (16 Kbit), structured in 128 pages of 16 bytes each. This requires an 11-bit data word address for random access. Because A0–A2 are No Connect, device addressing relies solely on the fixed 7-bit I²C address (1010xxx), allowing only one AT24C16N-10SI-1.8 per bus segment - a key constraint confirmed in the "Device Addressing" section of the datasheet.
AT24C16N-10SI-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:
- 16Kbit
- Memory Organization:
- 2K 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C16N-10SI-1.8 FAQ
1.How can I place an order for AT24C16N-10SI-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C16N-10SI-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 AT24C16N-10SI-1.8 reliable?
The price and inventory of AT24C16N-10SI-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 AT24C16N-10SI-1.8 is usually 5 days.
3.What payment methods are accepted for AT24C16N-10SI-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C16N-10SI-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C16N-10SI-1.8?
AT24C16N-10SI-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C16N-10SI-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 AT24C16N-10SI-1.8?
For technical support, including AT24C16N-10SI-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C16N-10SI-1.8 requirements.
6.How does Aetrix verify that AT24C16N-10SI-1.8 is sourced from the original manufacturer or authorized distributors?
All AT24C16N-10SI-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 AT24C16N-10SI-1.8 meets industry standards.
7.What is the process for return or replacement of AT24C16N-10SI-1.8?
All AT24C16N-10SI-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C16N-10SI-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 AT24C16N-10SI-1.8 part is unused and in its original packaging.
Return procedure for AT24C16N-10SI-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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