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Microchip Technology 24LC16BT-I/MC
- Part No.:
- 24LC16BT-I/MC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-VFDFN Exposed Pad
- Datasheet:
-
24LC16BT-I/MC.pdf
- Description:
- IC EEPROM 16KBIT I2C 400KHZ 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,459
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Product details
Overview
24LC16BT-I/MC from Microchip Technology Inc. is a 16-Kbit I²C-compatible serial EEPROM organized as eight 256 × 8-bit blocks, operating from 2.5V to 5.5V with 400 kHz max clock frequency, 5 ms max page write time, and industrial temperature range (–40°C to +85°C). It features hardware write-protection via the WP pin, Schmitt-trigger inputs for noise immunity, and 16-byte page write buffer - used in embedded system configuration storage, sensor calibration data retention, and firmware parameter backup.
For engineers reviewing the 24LC16BT-I/MC datasheet, 24LC16BT-I/MC pinout, 24LC16BT-I/MC application, or 24LC16BT-I/MC equivalent, key selection criteria include VCC min (2.5V), I²C speed grade (400 kHz), industrial temp rating, SOIC-8 package compatibility, and hardware write-protect functionality.
Technical Context
The 24LC16BT-I/MC functions as an I²C slave device with fixed 4-bit control code '1010' and 3-bit block-select addressing, supporting up to eight 256-word memory blocks. Its internal Address Pointer auto-increments during sequential reads and page writes, enabling efficient multi-byte transfers without repeated address commands.
It implements on-chip HV generation for EEPROM programming, self-timed erase/write cycles, and ACK polling for write-cycle completion detection. The SDA and SCL pins integrate Schmitt triggers and input filters (50 ns spike suppression), with output slope control to minimize ground bounce during switching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8), organized as eight 256-word blocks - enables segmented access and selective block protection. |
| VCC Range | 2.5V to 5.5V - compatible with 3.3V and 5V logic systems; not operable below 2.5V unlike 24AA16/24FC16 variants. |
| Max Clock Frequency | 400 kHz - supports standard-mode I²C; no 1 MHz capability (reserved for 24FC16). |
| Page Write Buffer | 16 bytes - allows burst writes within a single physical page (0–15, 16–31, etc.), improving write throughput vs. byte-by-byte. |
| Write Cycle Time | 5 ms maximum - defines worst-case latency before next command can be issued; mitigated via ACK polling. |
| Data Retention | Greater than 200 years - ensures long-term reliability for infrequently updated configuration data. |
| Endurance | 1 million erase/write cycles - supports frequent recalibration or logging in industrial monitoring applications. |
Pinout & Package
24LC16BT-I/MC is supplied in an 8-lead SOIC (SN) package per Microchip drawing C04-057-SN, with standard 150-mil body width and 1.27 mm pitch. Pin 1 is marked by a beveled corner or notch; exposed pad is absent (unlike DFN/TDFN variants).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSS (Pin 4) | Ground reference | Return path for all internal circuitry; must be connected to system GND with low-impedance trace. |
| WP (Pin 7) | Hardware write-protect input | Tie to VCC to disable all writes (read-only mode); tie to VSS to enable full read/write access. |
| SCL (Pin 6) | Serial clock input | Master-generated clock synchronizing all I²C transactions; requires external pull-up resistor (typically 2–10 kΩ). |
| SDA (Pin 5) | Bidirectional data line | Open-drain I/O for address/data transfer; requires same pull-up as SCL; changes only during SCL low except for START/STOP. |
| VCC (Pin 8) | Power supply | 2.5V–5.5V supply; bypass with 0.1 μF ceramic capacitor near pin to suppress noise and support transient current during write cycles. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Input hysteresis ≥0.05×VCC eliminates false triggering from bus noise or slow-rising signals. |
| Output slope control | Controlled SDA/SCL edge rates reduce ground bounce and EMI in high-density PCB layouts. |
| 16-byte page write buffer | Reduces I²C transaction overhead by up to 16× vs. byte writes - critical for fast parameter updates. |
| Hardware write-protection | Single-pin (WP) global lock prevents accidental firmware corruption or calibration overwrite during power-up/down. |
| 1 μA max standby current (I-temp) | Enables ultra-low-power operation in battery-backed systems such as smart meters or portable sensors. |
Applications
| Industrial Sensor Calibration Storage | Embedded System Configuration Memory |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain coefficients for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile parameter store accessed at boot via I²C; retains values across power cycles without backup battery. Use Value: Eliminates need for external calibration trimmers or battery-backed SRAM; reduces BOM cost and board space. | Use Scenario: Holding user-configurable settings (network IP, display brightness, alarm thresholds) in medical infusion pumps. IC Role / Device Role / Timing Role: I²C slave providing persistent storage for runtime-modifiable parameters; accessed during initialization and runtime updates. Use Value: Enables field-upgradable configurations without firmware reflash; supports regulatory-compliant audit trails via write-protection. |
| Automotive Body Control Module NVM | Firmware Bootloader Parameter Table |
Use Scenario: Saving seat/mirror position presets and lighting profiles in automotive door modules compliant with AEC-Q100 Grade 2. IC Role / Device Role / Timing Role: Industrial-temp-rated EEPROM interfacing with MCU over 400 kHz I²C; WP pin tied to MCU GPIO for dynamic protection. Use Value: Meets automotive reliability requirements (1M cycles, >200 yr retention) while supporting secure, authenticated write sequences. | Use Scenario: Storing bootloader version, secure boot keys, and partition checksums in industrial gateways with dual-firmware fallback. IC Role / Device Role / Timing Role: Read-once-at-boot, write-rarely NVM holding immutable boot metadata; accessed early in reset sequence before main application starts. Use Value: Prevents bootloader corruption via hardware WP; 5 ms write time enables fast key updates during secure provisioning. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA16T-I/MC | Lower VCC min (1.7V), same 400 kHz speed, identical SOIC-8 package and pinout. | Supports 1.7V–5.5V systems (e.g., coin-cell powered devices); not suitable where 2.5V minimum is enforced by upstream regulator. | Select when wider voltage range is required; verify system VCC stability below 2.5V. |
| 24LC16B-I/P | Same electrical specs and functionality, but in 8-lead PDIP package instead of SOIC-8. | Used in through-hole prototyping, legacy board repairs, or sockets requiring DIP footprint. | Select for hand-soldering, breadboarding, or backward compatibility with existing PDIP-based designs. |
Compared with 24AA16T-I/MC, the 24LC16BT-I/MC trades voltage flexibility for guaranteed 2.5V+ operation - simplifying power design in 3.3V/5V systems. Versus 24LC16B-I/P, it offers identical performance in a surface-mount SOIC-8 package, reducing PCB area and enabling automated assembly.
Availability
24LC16BT-I/MC is available at Aetrix Electronics and suitable for industrial sensor calibration storage, embedded system configuration memory, and automotive body control module NVM requiring stable component supply, long-lifecycle assurance, and RoHS-compliant sourcing.
Supply support for 24LC16BT-I/MC 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 leading provider of microcontrollers, analog components, and memory solutions, headquartered in Chandler, Arizona, with global manufacturing and support infrastructure.
The 24LC16B family is designed for reliable, low-power nonvolatile data storage in resource-constrained embedded systems - emphasizing robust I²C interface operation, extended endurance, and industrial-grade temperature resilience.
FAQ
What is the minimum supply voltage required for reliable operation of the 24LC16BT-I/MC?
The 24LC16BT-I/MC requires a minimum VCC of 2.5V for guaranteed operation across its full industrial temperature range (–40°C to +85°C). Unlike the 24AA16 variant, it is not specified for operation below 2.5V - attempting to power it at 1.8V or lower may result in undefined behavior or failed write cycles. Always maintain VCC within 2.5V–5.5V per the datasheet DC characteristics table.
Does the 24LC16BT-I/MC support 1 MHz I²C communication?
No, the 24LC16BT-I/MC does not support 1 MHz I²C operation. Its maximum clock frequency is 400 kHz under all valid VCC and temperature conditions. The 1 MHz capability is exclusive to the 24FC16 variant. Using 24LC16BT-I/MC on a 1 MHz bus will cause timing violations, missed ACKs, and unreliable data transfer.
How does the WP pin function on the 24LC16BT-I/MC, and what happens when it is left floating?
On the 24LC16BT-I/MC, the WP pin is a dedicated hardware write-protect input: tying it to VCC disables all write operations (memory becomes read-only), while tying it to VSS enables full read/write access. The datasheet explicitly states that A0–A2 pins are unconnected, but WP must not be left floating - doing so risks indeterminate protection state and potential unintended writes. Always tie WP to a defined logic level via MCU GPIO or hardwired VSS/VCC.
What is the physical page size of the 24LC16BT-I/MC, and why does it matter for page writes?
The 24LC16BT-I/MC has a physical page size of 16 bytes, aligned to addresses 0x00–0x0F, 0x10–0x1F, etc. During a page write, if the starting address plus byte count crosses a 16-byte boundary (e.g., writing 16 bytes starting at 0x0F), data wraps around to the start of the same page instead of advancing to the next - overwriting earlier bytes. This requires firmware to validate write boundaries before issuing page commands to avoid silent corruption.
Can the 24LC16BT-I/MC be used in automotive applications, and what qualifications does it hold?
Yes, the 24LC16BT-I/MC is qualified to AEC-Q100 Grade 2 (–40°C to +105°C ambient), and its industrial temperature grade (–40°C to +85°C) meets requirements for many automotive body electronics applications, including door modules and lighting controls. While not rated for engine bay (Grade 1), it is widely deployed in cabin and chassis systems where its 1 million endurance cycles and >200-year data retention ensure long-term reliability without battery backup.
24LC16BT-I/MC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (2x3)
24LC16BT-I/MC FAQ
1.How can I place an order for 24LC16BT-I/MC through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC16BT-I/MC 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-I/MC reliable?
The price and inventory of 24LC16BT-I/MC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC16BT-I/MC is usually 5 days.
3.What payment methods are accepted for 24LC16BT-I/MC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC16BT-I/MC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC16BT-I/MC?
24LC16BT-I/MC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC16BT-I/MC 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-I/MC?
For technical support, including 24LC16BT-I/MC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC16BT-I/MC requirements.
6.How does Aetrix verify that 24LC16BT-I/MC is sourced from the original manufacturer or authorized distributors?
All 24LC16BT-I/MC 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-I/MC meets industry standards.
7.What is the process for return or replacement of 24LC16BT-I/MC?
All 24LC16BT-I/MC units undergo pre-shipment inspection (PSI). If there is an issue with 24LC16BT-I/MC, 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-I/MC part is unused and in its original packaging.
Return procedure for 24LC16BT-I/MC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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