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Microchip Technology 24LC16BT-H/SN16KVAO
- Part No.:
- 24LC16BT-H/SN16KVAO
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
24LC16BT-H/SN16KVAO.pdf
- Description:
- IC EEPROM 16KBIT I2C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,282
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Product details
Overview
24LC16BT-H/SN16KVAO from Microchip Technology is an AEC-Q100 Grade 0 automotive-qualified 16-Kbit I²C serial EEPROM organized as eight 256 × 8-bit blocks, operating from 2.5V to 5.5V with 400 kHz clock support, 5 ms max page write time, and rated for -40°C to +150°C in SOIC-8 (SN) packaging. It delivers 1 µA standby current, hardware write-protection via WP pin, and >1 million erase/write cycles - deployed in engine control units and battery management systems requiring nonvolatile storage under thermal stress.
For engineers reviewing the 24LC16BT-H/SN16KVAO datasheet, 24LC16BT-H/SN16KVAO pinout, 24LC16BT-H/SN16KVAO application, or 24LC16BT-H/SN16KVAO equivalent, key selection considerations include its high-temp automotive qualification, I²C bus timing compliance at 400 kHz, page buffer size (16 bytes), WP pin behavior, and SOIC-8 footprint compatibility with industrial and automotive PCB layouts.
Technical Context
The 24LC16BT-H/SN16KVAO implements a two-wire I²C interface with Schmitt-trigger inputs and slope-controlled outputs to suppress noise and eliminate ground bounce. Its internal address pointer supports current-address, random, and sequential read modes, while block-select addressing (B2–B0) enables access to any of eight 256-word memory blocks using the fixed 1010 control code.
Write operations are self-timed: byte writes complete in ≤5 ms, and page writes (up to 16 bytes within a single 16-byte physical page boundary) also require ≤5 ms. Acknowledge polling is supported to detect write completion, and the WP pin provides hardware-level protection of the full 000h–7FFh address space when tied to VCC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8), organized as eight 256-word blocks - defines maximum data retention capacity and block-level addressing granularity. |
| VCC Range | 2.5V to 5.5V - enables direct interfacing with 3.3V and 5V microcontrollers without level shifting. |
| Max Clock Frequency | 400 kHz - determines maximum I²C bus throughput; compatible with standard and fast-mode I²C hosts. |
| Page Write Buffer | 16 bytes - allows burst writes within one physical page (00h–0Fh, 10h–1Fh, etc.), reducing transaction overhead vs. byte writes. |
| Write Cycle Time | ≤5 ms (byte or page) - sets minimum inter-write interval; impacts firmware timeout design and bus arbitration timing. |
| Endurance | 1,000,000 erase/write cycles - specifies guaranteed rewrite count before parametric failure; critical for logging or calibration storage. |
| Data Retention | >200 years at +150°C - ensures long-term validity of stored configuration or calibration data in under-hood applications. |
| Temperature Range | -40°C to +150°C (AEC-Q100 Grade 0) - validates operation in extreme automotive environments including powertrain and battery modules. |
Pinout & Package
24LC16BT-H/SN16KVAO is supplied in an 8-lead SOIC package (Microchip drawing C04-057-SN, body width 3.90 mm). Pin 1 is marked with a notch or dot; the package is RoHS-compliant and qualified per AEC-Q100.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | A0 | No internal connection - may be left floating or tied to VSS/VCC without affecting operation. |
| 2 | A1 | No internal connection - unused; no impact on device addressing or functionality. |
| 3 | A2 | No internal connection - not part of I²C client address; irrelevant for 24LC16B family addressing. |
| 4 | VSS | Ground reference - must be connected to system common ground; serves as return path for all I/O and supply currents. |
| 5 | SDA | Open-drain bidirectional data line - requires external pull-up resistor (2 kΩ typical for 400 kHz); carries addresses, commands, and data. |
| 6 | SCL | Input-only serial clock - synchronizes all data transfers; host-generated; edge-sensitive for Start/Stop detection. |
| 7 | WP | Hardware write-protect input - tied to VCC to disable all writes (read-only mode); tied to VSS for full read/write access. |
| 8 | VCC | Power supply - supplies core logic and EEPROM array; decoupling capacitor (0.1 µF) recommended near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Provides 0.05×VCC hysteresis on SDA/SCL - rejects noise spikes up to 50 ns, enabling reliable operation on electrically noisy automotive buses. |
| Output slope control | Limiting SDA fall/rise rates eliminates ground bounce during switching - prevents false Start/Stop generation and improves signal integrity. |
| 16-byte page write buffer | Reduces I²C transaction count by up to 16× vs. byte writes - lowers bus occupancy and host CPU overhead in firmware-driven updates. |
| Hardware write-protection | WP pin disables all write cycles when pulled high - prevents accidental overwrites of critical calibration or security data during power-up or reset. |
| AEC-Q100 Grade 0 qualification | Validated for 1000 hours at +150°C ambient - certifies suitability for engine control, transmission, and high-temp battery monitoring applications. |
| ESD protection | >4 kV HBM on all pins - enhances robustness against handling and system-level ESD events in manufacturing and field environments. |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
Use Scenario: Storing trim values, fault codes, and adaptive learning parameters that persist across ignition cycles and survive high under-hood temperatures. IC Role / Device Role / Timing Role: Nonvolatile configuration storage client on I²C bus, accessed asynchronously by MCU during boot and runtime. Use Value: Guarantees data integrity at +150°C with >200-year retention, eliminating need for external backup power or refresh circuitry. |
Use Scenario: Holding camera calibration offsets and sensor fusion coefficients in radar or vision processing modules exposed to thermal cycling. IC Role / Device Role / Timing Role: I²C-configurable parameter store synchronized to MCU's initialization sequence during cold start. Use Value: 16-byte page writes enable efficient bulk update of multi-parameter sets, reducing bus contention in time-critical ADAS boot paths. |
| Battery Management System (BMS) | Automotive Infotainment Head Unit |
Use Scenario: Recording cell voltage history, cycle count, and thermal derating thresholds in high-voltage traction battery packs. IC Role / Device Role / Timing Role: Fault-tolerant data logger interfaced to safety MCU via isolated I²C, supporting acknowledge polling during write cycles. Use Value: 1 M-cycle endurance supports daily logging over 27+ years; WP pin prevents corruption during brown-out conditions. |
Use Scenario: Storing user preferences, display brightness profiles, and audio equalization presets that survive vehicle power-down. IC Role / Device Role / Timing Role: Low-power I²C peripheral accessed infrequently during UI state changes or settings save events. Use Value: 1 µA standby current minimizes parasitic drain on always-on 12V rail; SOIC-8 footprint simplifies layout in space-constrained head unit PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar I²C EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C16C-SSHM-T | Same 16-Kbit capacity, 400 kHz I²C, SOIC-8, but rated only to +125°C (Industrial grade); no AEC-Q100 qualification. | Not suitable for under-hood or powertrain use; limited to cabin or chassis modules with lower thermal requirements. | Select only if AEC-Q100 Grade 0 is not required and cost sensitivity outweighs temperature margin. |
| BR24G16NUX-10 | 16-Kbit, I²C, SOIC-8, AEC-Q100 Grade 2 (−40°C to +105°C); includes built-in write-cycle endurance counter and enhanced ESD (6 kV). | Lacks +150°C capability; endurance counter adds diagnostic value but increases firmware complexity. | Prefer where extended diagnostics are needed and ambient temperature stays below +105°C. |
Compared with AT24C16C-SSHM-T and BR24G16NUX-10, the 24LC16BT-H/SN16KVAO uniquely satisfies Grade 0 thermal requirements while maintaining pin- and protocol-compatibility with legacy 24LC16B designs - making it the only drop-in solution for high-temp automotive EEPROM replacement.
Availability
24LC16BT-H/SN16KVAO is available at Aetrix Electronics and suitable for engine control units, battery management systems, advanced driver assistance systems, and infotainment head units requiring stable component supply across extended automotive lifecycles.
Supply support for 24LC16BT-H/SN16KVAO 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 Inc. is a U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and memory products, with global design, manufacturing, and support infrastructure.
The 24LC16B product line delivers automotive-grade serial EEPROMs optimized for reliability in harsh environments - designed specifically for nonvolatile storage in powertrain, chassis, and safety-critical automotive subsystems.
FAQ
What is the maximum I²C clock frequency supported by the 24LC16BT-H/SN16KVAO?
The 24LC16BT-H/SN16KVAO supports a maximum I²C clock frequency of 400 kHz, compliant with Fast-mode I²C specifications. This is validated across its full operating temperature range of −40°C to +150°C and supply voltage range of 2.5V to 5.5V. The device meets all AC timing parameters (e.g., THIGH ≥ 600 ns, TLOW ≥ 1300 ns) at this rate, ensuring interoperability with standard I²C hosts without additional timing margining.
Does the 24LC16BT-H/SN16KVAO require external pull-up resistors on SDA and SCL lines?
Yes, the 24LC16BT-H/SN16KVAO requires external pull-up resistors on both SDA and SCL lines because its I/O pins are open-drain. For 400 kHz operation, a 2 kΩ pull-up to VCC is recommended; for 100 kHz, 10 kΩ is typical. These values ensure rise times ≤300 ns while limiting current draw, as specified in the AC characteristics table of the DS20006054B datasheet.
How does the WP pin function on the 24LC16BT-H/SN16KVAO?
The WP (Write-Protect) pin on the 24LC16BT-H/SN16KVAO is a hardware-level enable/disable control for all write operations. When tied to VCC, the entire memory array (addresses 000h–7FFh) becomes read-only; reads remain fully functional. When tied to VSS (or left floating, though not recommended), full read/write access is enabled. This behavior is active regardless of I²C command state and provides fail-safe protection against unintended writes.
What is the physical page size and boundary alignment requirement for page writes on the 24LC16BT-H/SN16KVAO?
The 24LC16BT-H/SN16KVAO has a fixed 16-byte physical page size, with boundaries aligned to integer multiples of 16 (e.g., 00h–0Fh, 10h–1Fh, ..., 7F0h–7FFh). Page writes must not cross these boundaries: attempting to write across a boundary causes wraparound within the current page, overwriting earlier bytes. Firmware must validate starting address modulo 16 and limit transfer length to avoid unintended data loss.
Is the 24LC16BT-H/SN16KVAO pin-compatible with other members of the 24LC16B family?
Yes, the 24LC16BT-H/SN16KVAO uses the same SOIC-8 (SN) package and identical pinout as all 24LC16B variants in that package, including A0–A2 no-connect pins, VSS, SDA, SCL, WP, and VCC in pins 1–8 respectively. Its electrical and timing specifications are consistent with the base 24LC16B, and the "16KVAO" suffix denotes AEC-Q100 Grade 0 qualification - not a pinout or functional change.
24LC16BT-H/SN16KVAO Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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:
- 400 kHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 900 ns
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
24LC16BT-H/SN16KVAO FAQ
1.How can I place an order for 24LC16BT-H/SN16KVAO through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC16BT-H/SN16KVAO 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 24LC16BT-H/SN16KVAO reliable?
The price and inventory of 24LC16BT-H/SN16KVAO are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC16BT-H/SN16KVAO is usually 5 days.
3.What payment methods are accepted for 24LC16BT-H/SN16KVAO?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC16BT-H/SN16KVAO transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC16BT-H/SN16KVAO?
24LC16BT-H/SN16KVAO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC16BT-H/SN16KVAO 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 24LC16BT-H/SN16KVAO?
For technical support, including 24LC16BT-H/SN16KVAO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC16BT-H/SN16KVAO requirements.
6.How does Aetrix verify that 24LC16BT-H/SN16KVAO is sourced from the original manufacturer or authorized distributors?
All 24LC16BT-H/SN16KVAO 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 24LC16BT-H/SN16KVAO meets industry standards.
7.What is the process for return or replacement of 24LC16BT-H/SN16KVAO?
All 24LC16BT-H/SN16KVAO units undergo pre-shipment inspection (PSI). If there is an issue with 24LC16BT-H/SN16KVAO, 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 24LC16BT-H/SN16KVAO part is unused and in its original packaging.
Return procedure for 24LC16BT-H/SN16KVAO:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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