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Microchip Technology AT24C16AN-10SU-1.8-T
- Part No.:
- AT24C16AN-10SU-1.8-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C16AN-10SU-1.8-T.pdf
- Description:
- IC EEPROM 16KBIT I2C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,639
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Product details
Overview
AT24C16AN-10SU-1.8-T from Microchip Technology is a 16-Kbit (2048 × 8) two-wire 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 - used in industrial control modules for parameter storage and calibration data backup.
For engineers reviewing the AT24C16AN-10SU-1.8-T datasheet, AT24C16AN-10SU-1.8-T pinout, AT24C16AN-10SU-1.8-T application, or AT24C16AN-10SU-1.8-T equivalent, this page provides verified electrical specs, JEDEC SOIC-8 package details, I²C timing constraints, endurance/reliability metrics, and validated alternative parts for design continuity.
Technical Context
The AT24C16AN-10SU-1.8-T implements a standard two-wire (I²C-compatible) serial interface with open-drain SDA and Schmitt-triggered SCL inputs for noise immunity. It uses 11-bit internal addressing to access its 2048-word memory space, with A0–A2 pins designated as no-connects - eliminating device address conflicts on shared buses.
Write operations support both byte and 16-byte page modes, with self-timed internal write cycles completing in ≤5 ms. The WP pin enables hardware-level write protection across the full 16K array when pulled high, while standby current remains ≤3.0 µA at 1.8V - critical for battery-backed systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8 bits), organized in 128 pages of 16 bytes each - enables efficient block updates in firmware configuration storage. |
| Supply Voltage Range | 1.8V to 5.5V - supports direct interfacing with 1.8V logic families and mixed-voltage systems without level shifters. |
| I²C Clock Frequency | 100 kHz maximum at 1.8V - ensures reliable operation in low-power microcontroller subsystems with limited drive strength. |
| Write Endurance | 1 million write cycles per memory location - guarantees long-term reliability in logging or counter applications with frequent updates. |
| Data Retention | 100 years at +25°C - qualifies for use in infrastructure equipment requiring archival-grade nonvolatile storage without refresh. |
| Standby Current | ≤3.0 µA at VCC = 1.8V - minimizes quiescent power draw in always-on sensor nodes and energy-harvesting devices. |
| Write Protection | Hardware-enabled via WP pin - prevents accidental overwrites during power transitions or firmware glitches without software intervention. |
Pinout & Package
AT24C16AN-10SU-1.8-T is housed in an 8-lead JEDEC SOIC (8S1) package, 0.150" wide, RoHS-compliant and green-marked ("U"). Pin 1 is bottom-left corner when notch faces up; body dimensions are 4.90 mm × 3.90 mm × 1.75 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | No Connect | Internally unused; must be tied to GND or left floating - no device addressing capability, limiting bus to one AT24C16A instance. |
| A1 | No Connect | Internally unused; no effect on operation - simplifies PCB routing by eliminating address strap requirements. |
| A2 | No Connect | Internally unused; eliminates need for external pull-up/down resistors - reduces BOM count and layout complexity. |
| GND | Ground Reference | Primary return path for VCC and I/O signals - requires low-impedance connection to system ground plane for noise immunity. |
| VCC | Power Supply | Accepts 1.8V–5.5V; decoupling capacitor (0.1 µF ceramic) required within 5 mm for stable I²C timing and write integrity. |
| WP | Write Protect Input | Active-high signal; when driven to VCC, blocks all write commands - enables fail-safe configuration lockdown during field operation. |
| SCL | Serial Clock Input | Positive-edge sampled clock; requires external pull-up (typically 4.7 kΩ) - sets maximum bus speed and synchronizes all I²C transactions. |
| SDA | Serial Data I/O | Open-drain bidirectional line; shares pull-up with other I²C devices - supports multi-master arbitration and wired-AND logic on shared buses. |
Key Features
| Feature | Design Value |
|---|---|
| 1.8V Low-Voltage Operation | Enables direct integration with ultra-low-power MCUs (e.g., ARM Cortex-M0+) without voltage translation circuitry. |
| 16-Byte Page Write Mode | Reduces I²C transaction overhead by up to 15× vs. byte writes - accelerates firmware update or calibration table programming. |
| Schmitt-Trigger Inputs | Rejects noise spikes up to 100 ns duration on SCL/SDA - improves robustness in electrically noisy industrial environments. |
| 100-Year Data Retention | Eliminates need for periodic data refresh or backup power - suitable for unattended infrastructure monitoring systems. |
| JEDEC SOIC-8 Footprint | Ensures compatibility with legacy assembly lines and reflow profiles - avoids redesign costs in volume production. |
Applications
| Industrial PLC Configuration Storage | Medical Device Calibration Memory |
|---|---|
Use Scenario: Storing user-defined I/O mapping, scaling factors, and alarm thresholds in programmable logic controllers deployed in factory automation. IC Role / Device Role / Timing Role: Nonvolatile parameter repository accessed via I²C during boot and runtime; WP pin hardwired to VCC after commissioning. Use Value: Prevents corruption during brown-out events and enables field recalibration without firmware reflashing - reducing service downtime. | Use Scenario: Holding sensor offset/gain coefficients and patient-specific therapy parameters in portable infusion pumps and diagnostic monitors. IC Role / Device Role / Timing Role: Secure, tamper-resistant memory accessed only during device initialization or clinician-configured sessions. Use Value: Meets IEC 62304 Class C software safety requirements through hardware write lock and 1M-cycle endurance - ensuring treatment accuracy over device lifetime. |
| Smart Meter Firmware Patch Storage | Automotive Body Control Module Settings |
Use Scenario: Storing delta patches applied to meter firmware during OTA updates, allowing rollback to prior versions if validation fails. IC Role / Device Role / Timing Role: Dual-bank shadow memory accessed sequentially during update sequence; isolated from main application code space. Use Value: Enables atomic firmware updates with zero risk of bricking - critical for utility-grade meters operating unattended for 15+ years. | Use Scenario: Retaining seat/mirror position presets, lighting profiles, and door lock behavior preferences across ignition cycles in entry-level vehicles. IC Role / Device Role / Timing Role: Low-quiescent-power memory powered directly from always-on battery rail; accessed via LIN-to-I²C bridge IC. Use Value: Draws <3 µA in standby - extends parasitic drain below 20 µA threshold required for 1-year parking survival in automotive specifications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C16D-SSHM-T | Same 16K capacity, 1.7–5.5V range, but uses 8-lead TSSOP (8A2); supports 400 kHz at ≥2.5V. | Better suited for space-constrained layouts where 4.4 mm × 3.0 mm TSSOP footprint is preferred over SOIC. | Select when board area is constrained and higher-speed I²C (400 kHz) is needed above 2.5V supply. |
| BR24G16NUX-10TTR | Rohm 16K EEPROM; 1.6–5.5V operation; 1 MHz I²C support; built-in error correction (ECC) for enhanced reliability. | Provides single-bit error detection/correction - advantageous in high-radiation or long-life aerospace deployments. | Choose when extended reliability beyond 1M cycles or ECC-protected storage is mandated by system safety standards. |
Compared with AT24C16AN-10SU-1.8-T, AT24C16D-SSHM-T offers smaller footprint and faster timing above 2.5V, while BR24G16NUX-10TTR adds ECC and wider voltage range - neither is pin-compatible, but both maintain identical 16K organization and I²C protocol compliance.
Availability
AT24C16AN-10SU-1.8-T is available at Aetrix Electronics and suitable for industrial control systems, medical diagnostics equipment, smart utility meters, and automotive body electronics requiring stable component supply and long-term obsolescence management.
Supply support for AT24C16AN-10SU-1.8-T 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 leading provider of microcontrollers, analog components, and memory solutions, headquartered in Chandler, Arizona, with global manufacturing and support infrastructure.
The AT24Cxx family was designed specifically for cost-sensitive, low-power embedded systems needing reliable, standardized I²C EEPROM - emphasizing ease of integration, long-term data integrity, and broad voltage compatibility.
FAQ
What is the maximum I²C clock frequency supported by AT24C16AN-10SU-1.8-T at 1.8V?
The AT24C16AN-10SU-1.8-T supports a maximum I²C clock frequency of 100 kHz when operating at 1.8V. This is specified in Table 5 of the datasheet under "1.8-volt" conditions for fSCL. At higher supply voltages (≥2.7V), it supports up to 400 kHz - but the -1.8-T suffix confirms this variant is characterized and guaranteed for 1.8V operation.
Does AT24C16AN-10SU-1.8-T require external pull-up resistors on SDA and SCL lines?
Yes, AT24C16AN-10SU-1.8-T requires external pull-up resistors on both SDA and SCL lines because its I/O pins are open-drain. Typical values range from 2.2 kΩ to 10 kΩ depending on bus capacitance and desired rise time; 4.7 kΩ is commonly used for 100 kHz operation with ≤400 pF total bus load.
How is device addressing handled on AT24C16AN-10SU-1.8-T given that A0, A1, and A2 are marked NC?
On AT24C16AN-10SU-1.8-T, A0–A2 are no-connects and unused for device addressing. The part uses a fixed 7-bit I²C slave address of 0x50 (1010000b) with R/W bit appended - meaning only one AT24C16A can reside on a given I²C bus. This eliminates address conflict risks but requires separate buses or multiplexers for multiple 16K EEPROMs.
What is the purpose of the WP pin on AT24C16AN-10SU-1.8-T, and how should it be connected?
The WP (Write Protect) pin on AT24C16AN-10SU-1.8-T enables hardware-level write blocking. When pulled high to VCC, it disables all write operations to the entire 16K memory array. For normal read/write operation, connect WP to GND. Leaving it floating is not recommended due to potential noise-induced protection activation.
Is AT24C16AN-10SU-1.8-T suitable for automotive applications?
AT24C16AN-10SU-1.8-T is rated for industrial temperature range (–40°C to +85°C) and meets RoHS/lead-free requirements, but it is not AEC-Q200 qualified. For automotive body electronics where qualification is not mandatory (e.g., non-safety-critical infotainment settings), it may be used - however, Microchip's automotive-grade AT24C16C variants with AEC-Q200 certification are recommended for under-hood or safety-relevant systems.
AT24C16AN-10SU-1.8-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C16AN-10SU-1.8-T FAQ
1.How can I place an order for AT24C16AN-10SU-1.8-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C16AN-10SU-1.8-T 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 AT24C16AN-10SU-1.8-T reliable?
The price and inventory of AT24C16AN-10SU-1.8-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C16AN-10SU-1.8-T is usually 5 days.
3.What payment methods are accepted for AT24C16AN-10SU-1.8-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C16AN-10SU-1.8-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C16AN-10SU-1.8-T?
AT24C16AN-10SU-1.8-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C16AN-10SU-1.8-T 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 AT24C16AN-10SU-1.8-T?
For technical support, including AT24C16AN-10SU-1.8-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C16AN-10SU-1.8-T requirements.
6.How does Aetrix verify that AT24C16AN-10SU-1.8-T is sourced from the original manufacturer or authorized distributors?
All AT24C16AN-10SU-1.8-T 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 AT24C16AN-10SU-1.8-T meets industry standards.
7.What is the process for return or replacement of AT24C16AN-10SU-1.8-T?
All AT24C16AN-10SU-1.8-T units undergo pre-shipment inspection (PSI). If there is an issue with AT24C16AN-10SU-1.8-T, 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 AT24C16AN-10SU-1.8-T part is unused and in its original packaging.
Return procedure for AT24C16AN-10SU-1.8-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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