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Microchip Technology AT24C16C-XPD-T
- Part No.:
- AT24C16C-XPD-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AT24C16C-XPD-T.pdf
- Description:
- IC EEPROM 16KBIT I2C 8TSSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
AT24C16C-XPD-T from Microchip Technology (formerly Atmel) is an automotive-grade 16-Kbit I²C serial EEPROM organized as 2,048 × 8 bits, operating from 1.7V to 5.5V across Grade 3 temperature range (–40°C to +85°C), featuring hardware write protection via WP pin and 16-byte page write capability. It is used for nonvolatile parameter storage in automotive body control modules, infotainment system calibration data, and ECU configuration retention.
For engineers reviewing the AT24C16C-XPD-T datasheet, AT24C16C-XPD-T pinout, AT24C16C-XPD-T application, or AT24C16C-XPD-T equivalent, key selection considerations include its AEC-Q100 Grade 3 qualification, 400 kHz I²C interface compliance, 1,000,000 write endurance, 100-year data retention, and TSSOP-8 package compatibility with space-constrained automotive PCB layouts.
Technical Context
The AT24C16C-XPD-T implements a two-wire I²C-compatible interface with Schmitt-triggered, noise-filtered SDA and SCL inputs. Its internal architecture includes an 11-bit word address counter, 128-page memory organization (16 bytes/page), and a self-timed write cycle with 5 ms maximum duration.
It supports byte and page write modes, current/random/sequential read operations, and acknowledge polling during write cycles. The WP pin enables full-array hardware write protection when tied to VCC, while floating WP is internally pulled down if board coupling capacitance remains below 3 pF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2,048 × 8 bits), enabling storage of firmware flags, sensor offsets, or user preferences in compact automotive subsystems |
| Interface | I²C-compatible 2-wire serial bus, supporting standard-mode (100 kHz) and fast-mode (400 kHz) operation for integration with microcontrollers without additional protocol logic |
| Supply Voltage | 1.7V to 5.5V - compatible with 3.3V and 5V automotive domains and tolerant of battery voltage transients |
| Temperature Range | –40°C to +85°C (AEC-Q100 Grade 3), validated for cabin-mounted modules including HVAC controls and instrument clusters |
| Endurance & Retention | 1,000,000 write cycles and 100 years data retention - suitable for infrequent but mission-critical configuration updates over vehicle lifetime |
| Write Protection | Hardware-enabled via dedicated WP pin - prevents accidental overwrites during power-up/down or software faults without firmware intervention |
| Package | 8-lead TSSOP (8X), 4.4 mm body width, 0.65 mm pitch - surface-mount compatible with automated assembly and thermal performance suited for under-dash environments |
Pinout & Package
AT24C16C-XPD-T is supplied in an 8-lead TSSOP (JEDEC MO-153, variation AA) package with 0.65 mm lead pitch and 4.4 mm body width. Pin 1 is marked by a beveled corner on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No Connect | Unused die bond pad; must remain unconnected per design - no routing or pull-up/pull-down required |
| 2 (NC) | No Connect | Unused die bond pad; electrically isolated - no impact on functionality or layout |
| 3 (NC) | No Connect | Unused die bond pad; not bonded - leaves adjacent pins free for signal integrity optimization |
| 4 (GND) | Ground Reference | Primary return path for internal circuitry and I²C bus termination - requires low-impedance connection to system ground plane |
| 5 (VCC) | Power Supply | Single-supply input for core and interface logic - accepts 1.7V–5.5V; decoupling capacitor (100 nF) recommended within 5 mm |
| 6 (WP) | Write Protect Control | Active-high hardware lock - ties to VCC to disable all writes; ties to GND for normal operation; floating defaults to GND if board coupling < 3 pF |
| 7 (SCL) | Serial Clock Input | Master-generated clock for synchronous data transfer - Schmitt-triggered with noise filtering; requires external pull-up resistor (typically 2.2–10 kΩ) |
| 8 (SDA) | Serial Data I/O | Open-drain bidirectional bus line - shared across multiple I²C devices; requires same external pull-up as SCL |
Key Features
| Feature | Design Value |
|---|---|
| Automotive Qualification | AEC-Q100 Grade 3 qualified - verified for reliability in automotive cabin environments with extended thermal cycling and humidity exposure |
| Page Write Mode | 16-byte atomic page writes - reduces I²C transaction overhead and improves update efficiency for grouped parameters like sensor calibration sets |
| Noise Immunity | Schmitt-triggered, filtered SDA/SCL inputs - suppresses EMI-induced glitches common in vehicle electrical systems without external RC filters |
| Low-Power Standby | Max 6.0 µA standby current at 5.0V - minimizes quiescent draw in always-on modules such as telematics gateways |
| Addressing Simplicity | No device address pins (A0–A2 are NC) - eliminates external jumpers or resistors; limits bus to one AT24C16C-XPD-T per segment but simplifies layout |
Applications
| Body Control Module (BCM) | Instrument Cluster |
|---|---|
Use Scenario: Storing door lock configuration, window position memory, and lighting timeout settings across ignition cycles. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding user-customized behavior parameters accessible via I²C during MCU boot and runtime. Use Value: Enables persistent personalization without backup battery; leverages 100-year retention to outlive vehicle service life. | Use Scenario: Retaining odometer value, service interval counters, and warning lamp history after power loss. IC Role / Device Role / Timing Role: Tamper-resistant storage element interfaced to cluster MCU, updated only during validated maintenance events. Use Value: Meets regulatory requirements for mileage integrity using hardware write protection (WP pin) to prevent unauthorized modification. |
| Infotainment System | Seat Control Unit |
Use Scenario: Saving audio equalizer presets, Bluetooth pairing IDs, and display brightness profiles between sessions. IC Role / Device Role / Timing Role: Parameter EEPROM accessed during UI initialization and user setting changes via I²C at 400 kHz for responsive UX. Use Value: Supports rapid recall of user preferences with 5 ms max write time per page - avoids perceptible UI lag during save operations. | Use Scenario: Recording seat position memory, heating level preferences, and massage program selections for driver profiles. IC Role / Device Role / Timing Role: Dedicated nonvolatile memory co-located with seat MCU, updated during seat adjustment events. Use Value: Achieves >1M write cycles to accommodate frequent daily adjustments while maintaining data integrity over 15+ years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STMicroelectronics M24C16-RMN6TP | Same 16-Kbit I²C EEPROM, AEC-Q100 Grade 3, TSSOP-8, 1.7–5.5V, but rated for 400 kHz max with 10 µA max ISB at 5V | Higher standby current may impact ultra-low-power always-on nodes; identical pinout and addressing | Select when sourcing from ST-authorized channels or requiring dual-sourcing with identical footprint |
| Rohm BR24G16FJ-3GE2 | 16-Kbit I²C EEPROM, AEC-Q100 Grade 3, TSSOP-8, 1.7–5.5V, but features built-in write-cycle endurance counter and 1.8V min operation | Includes diagnostic register for wear-leveling monitoring; slightly lower VCC min enables tighter integration with 1.8V logic domains | Choose for predictive maintenance capability or designs already using Rohm's BR24G family ecosystem |
Compared with M24C16-RMN6TP and BR24G16FJ-3GE2, AT24C16C-XPD-T offers the lowest standby current (4.0–6.0 µA at 5V) and proven field reliability in Tier-1 BCM deployments, making it optimal for cost-sensitive, high-volume automotive modules where power and longevity are prioritized over diagnostics.
Availability
AT24C16C-XPD-T is available at Aetrix Electronics and suitable for automotive body control modules, instrument clusters, and infotainment systems requiring stable component supply across multi-year production programs.
Supply support for AT24C16C-XPD-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 acquired Atmel in 2016 and maintains its automotive EEPROM portfolio with full documentation, qualification, and long-term supply commitment.
The AT24C16C product line delivers AEC-Q100-qualified serial EEPROMs optimized for automotive subsystems requiring robust nonvolatile storage in thermally demanding, electrically noisy environments.
FAQ
What is the operating voltage range for AT24C16C-XPD-T?
The AT24C16C-XPD-T operates from 1.7V to 5.5V, supporting both 3.3V and 5V automotive domains. This wide range accommodates battery voltage fluctuations and ensures reliable operation during cold-crank (down to ~6V) and load-dump (up to ~16V) conditions when paired with appropriate regulators. The device is specified for Grade 3 (–40°C to +85°C) across this full voltage span.
Does AT24C16C-XPD-T support page write operations?
Yes, AT24C16C-XPD-T supports 16-byte page write mode, allowing up to 16 sequential bytes to be written in a single I²C transaction. This reduces bus overhead compared to byte writes and accelerates bulk configuration updates. Page boundaries are fixed at 16-byte intervals, and rollover occurs within the same page if more than 16 bytes are sent.
How is hardware write protection implemented on AT24C16C-XPD-T?
AT24C16C-XPD-T uses a dedicated WP (Write Protect) pin: when tied to VCC, the entire 16-Kbit array is locked against writes; when tied to GND, normal read/write operations proceed. If left floating, the pin is internally pulled down (to GND) provided board coupling capacitance remains below 3 pF - otherwise, external grounding is required for guaranteed protection.
What package type does AT24C16C-XPD-T use?
AT24C16C-XPD-T uses an 8-lead TSSOP package (JEDEC MO-153, variation AA), designated as "8X" in Microchip's ordering code. It measures 4.4 mm × 3.0 mm with 0.65 mm lead pitch, offering compact footprint and thermal performance suitable for automotive PCBs with reflow-compatible NiPdAu lead finish.
Is AT24C16C-XPD-T qualified for automotive applications?
Yes, AT24C16C-XPD-T is AEC-Q100 qualified to Grade 3 (–40°C to +85°C) and manufactured under IATF 16949. It undergoes stress testing for temperature cycling, humidity bias, and ESD robustness per automotive standards, making it suitable for cabin-mounted electronic control units including body controllers and infotainment head units.
AT24C16C-XPD-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 1 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 550 ns
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
AT24C16C-XPD-T FAQ
1.How can I place an order for AT24C16C-XPD-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C16C-XPD-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 AT24C16C-XPD-T reliable?
The price and inventory of AT24C16C-XPD-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C16C-XPD-T is usually 5 days.
3.What payment methods are accepted for AT24C16C-XPD-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C16C-XPD-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C16C-XPD-T?
AT24C16C-XPD-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C16C-XPD-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 AT24C16C-XPD-T?
For technical support, including AT24C16C-XPD-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C16C-XPD-T requirements.
6.How does Aetrix verify that AT24C16C-XPD-T is sourced from the original manufacturer or authorized distributors?
All AT24C16C-XPD-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 AT24C16C-XPD-T meets industry standards.
7.What is the process for return or replacement of AT24C16C-XPD-T?
All AT24C16C-XPD-T units undergo pre-shipment inspection (PSI). If there is an issue with AT24C16C-XPD-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 AT24C16C-XPD-T part is unused and in its original packaging.
Return procedure for AT24C16C-XPD-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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