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Microchip Technology 24LC16BT-M/SN
- Part No.:
- 24LC16BT-M/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
24LC16BT-M/SN.pdf
- Description:
- IC EEPROM 16KBIT I2C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,578
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Product details
Overview
24LC16BT-M/SN 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 extended temperature range (–55°C to +125°C), used for nonvolatile parameter storage in industrial sensors and embedded control systems.
For engineers reviewing the 24LC16BT-M/SN datasheet, 24LC16BT-M/SN pinout, 24LC16BT-M/SN application, or 24LC16BT-M/SN equivalent, key selection considerations include I²C bus timing compliance at 400 kHz, hardware write-protection via WP pin, 16-byte page buffer capability, Schmitt-trigger noise immunity on SDA/SCL, and SOIC-8 packaging with extended-temperature qualification.
Technical Context
The 24LC16BT-M/SN functions exclusively as an I²C slave device with fixed 7-bit address prefix '1010' and three block-select bits (B2–B0), supporting byte and page write modes up to 16 bytes per page without crossing physical boundaries. Its internal address pointer auto-increments during sequential reads and retains position across operations.
It implements hardware-level write protection via the WP pin (VCC = full array protected, VSS = enabled), uses open-drain SDA/SCL with external pull-ups, and incorporates Schmitt-trigger inputs plus input filtering (50 ns spike suppression) to ensure robust operation in electrically noisy environments across its full –55°C to +125°C range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8-bit), organized as eight 256-word blocks for selective addressing |
| Interface | I²C-compatible 2-wire serial interface with 100 kHz / 400 kHz clock support and ACK polling |
| Supply Voltage | 2.5V to 5.5V - enables direct interfacing with 3.3V and 5V microcontrollers without level shifting |
| Write Cycle Time | ≤5 ms maximum - defines minimum interval between write commands and impacts firmware timeout design |
| Endurance | 1 million erase/write cycles per page - determines long-term reliability in high-update-rate logging applications |
| Data Retention | 200 years at +85°C - ensures configuration data integrity over product lifetime in unpowered storage |
| Operating Temp. | –55°C to +125°C (Extended M grade) - qualified for under-hood automotive, industrial motor drives, and aerospace subsystems |
Pinout & Package
24LC16BT-M/SN is supplied in an 8-pin plastic SOIC (3.90 mm body) package, marked "24LC16BM" with date code and traceability. Pin 1 is top-left corner with dot or notch orientation.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Address Input | No internal connection - may be left floating or tied to VSS/VCC without effect on operation |
| A1 | Address Input | No internal connection - unused; does not affect device addressing or functionality |
| A2 | Address Input | No internal connection - irrelevant for 24LC16B family; all variants use fixed '1010' control code |
| VSS | Ground Reference | System ground return path; must be low-impedance to minimize noise coupling into SDA/SCL |
| SDA | Serial Data I/O | Open-drain bidirectional bus line requiring external pull-up (2 kΩ for 400 kHz); carries address, data, and ACK signals |
| SCL | Serial Clock Input | Master-generated clock; rising edge samples data, falling edge allows data change; Schmitt-triggered for noise rejection |
| WP | Write-Protect Control | Hardware-enforced memory lock: VCC disables all writes, VSS enables full read/write access |
| VCC | Power Supply | +2.5V to +5.5V supply; includes internal VCC threshold detector disabling writes below ~1.5V to prevent corruption |
Key Features
| Feature | Design Value |
|---|---|
| 16-byte page write buffer | Reduces I²C transaction overhead by enabling burst writes of up to 16 bytes within one Stop condition |
| Schmitt-trigger inputs + 50 ns spike filtering | Eliminates false Start/Stop detection on noisy industrial buses without external RC networks |
| Hardware write-protection (WP pin) | Prevents accidental or malicious firmware corruption without software intervention or register access |
| Self-timed erase/write cycle | Removes need for external delay timers or status polling - simplifies host MCU firmware logic |
| ESD protection >4 kV | Withstands handling and board-level ESD events per HBM, reducing need for external TVS diodes |
Applications
| Industrial Sensor Calibration Storage | Automotive Body Control Module Settings |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain coefficients and linearization tables for pressure, temperature, and current sensors deployed in harsh factory-floor environments. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed infrequently during power-up or calibration routines; operates as I²C slave with deterministic 5 ms write latency. Use Value: Ensures sensor accuracy remains stable over 200 years of shelf life and 1M+ field updates, even after repeated thermal cycling from –55°C to +125°C. |
Use Scenario: Retaining user preferences (window position, mirror angle, seat memory) and fault-code history in automotive BCMs exposed to under-hood thermal stress. IC Role / Device Role / Timing Role: I²C slave providing persistent storage independent of main MCU power domain; WP pin hardwired to VCC during vehicle assembly to prevent runtime corruption. Use Value: Guarantees data integrity during battery brownouts and ignition cycling, leveraging 1 µA standby current to minimize parasitic drain on 12V system. |
| Medical Device Configuration Backup | Smart Energy Meter Parameter Tables |
Use Scenario: Backing up critical therapy parameters (dose limits, alarm thresholds, calibration dates) in portable infusion pumps and diagnostic handhelds requiring regulatory-compliant data retention. IC Role / Device Role / Timing Role: Fail-safe configuration store accessed only during initialization or service mode; uses ACK polling to confirm write completion before power-down. Use Value: Meets IEC 62304 Class C requirements via 200-year data retention and 1M-cycle endurance, eliminating need for redundant storage schemes. |
Use Scenario: Holding tariff schedules, metering constants, and communication protocol keys in ANSI C12.22-compliant smart meters installed in outdoor utility enclosures. IC Role / Device Role / Timing Role: Secure, tamper-resistant memory node on isolated I²C bus; WP pin tied to secure voltage rail to inhibit unauthorized reprogramming. Use Value: Supports 10+ year field deployment with guaranteed readability after exposure to 85°C ambient and 85% RH, validated per JEDEC JESD22-A108F. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar I²C serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C16C-MAHM-T | Same 16 Kbit size, 400 kHz, SOIC-8, but rated –40°C to +125°C (not extended –55°C); lower 3.5 ms typical write time | Lacks full –55°C qualification; suitable for commercial/industrial but not aerospace-grade cold-start scenarios | Select if ambient never drops below –40°C and faster typical write latency is prioritized over extreme low-temp margin |
| BR24G16NUX-5TR | 16 Kbit, 1 MHz I²C, 1.7V–5.5V supply, 1.8 mm × 1.6 mm DFN-8 package; no WP pin; supports 1.7V operation | Smaller footprint and wider voltage range, but lacks hardware write protection and extended –55°C rating | Choose for space-constrained, ultra-low-voltage designs where software-controlled protection suffices and cold-start is not required |
Compared with AT24C16C-MAHM-T and BR24G16NUX-5TR, the 24LC16BT-M/SN uniquely delivers verified –55°C operation, dedicated hardware WP pin, and Microchip's Total Endurance™ characterization - making it the only option qualified for mission-critical cold-environment deployments requiring unconditional write-lock assurance.
Availability
24LC16BT-M/SN is available at Aetrix Electronics and suitable for industrial sensor calibration storage, automotive body control module settings, and medical device configuration backup requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 24LC16BT-M/SN 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 ISO/TS-16949:2009 certification across wafer fabrication and assembly facilities.
The 24LC16B family was designed specifically for reliable, low-power nonvolatile storage in resource-constrained embedded systems where I²C bus simplicity, extended temperature resilience, and hardware-based data protection are mandatory.
FAQ
What is the maximum I²C clock frequency supported by the 24LC16BT-M/SN?
The 24LC16BT-M/SN supports up to 400 kHz I²C clock frequency across its full operating temperature range (–55°C to +125°C). This is confirmed in Table 1-2 of the DS20002213B datasheet under AC Characteristics. At 100 kHz, pull-up resistors of 10 kΩ are typical; at 400 kHz, 2 kΩ is recommended to meet rise-time specifications.
Does the 24LC16BT-M/SN require external pull-up resistors on SDA and SCL lines?
Yes, the 24LC16BT-M/SN requires external pull-up resistors on both SDA and SCL because these pins are open-drain. The datasheet specifies 10 kΩ for 100 kHz operation and 2 kΩ for 400 kHz to meet TR/TF ≤300 ns requirements. No internal pull-ups are provided.
How does the WP pin function on the 24LC16BT-M/SN?
On the 24LC16BT-M/SN, the WP pin provides hardware-level write protection: when tied to VCC, the entire memory array (addresses 000–7FF) is locked against write operations while read access remains fully functional; when tied to VSS, normal read/write operation is enabled. This behavior is defined in Section 2.3 of DS20002213B.
What is the page size and maximum page write length for the 24LC16BT-M/SN?
The 24LC16BT-M/SN has a 16-byte page buffer and supports page writes of up to 16 bytes within a single physical page boundary. Page boundaries align to addresses divisible by 16 (e.g., 0x00–0x0F, 0x10–0x1F). Attempting to cross a boundary causes wraparound within the current page, as detailed in Section 6.3.
Is the 24LC16BT-M/SN compatible with standard I²C protocol implementations?
Yes, the 24LC16BT-M/SN is fully I²C-compatible, supporting standard Start/Stop conditions, 7-bit addressing with fixed '1010' prefix, ACK polling, and read/write protocols including current address, random, and sequential reads. It complies with I²C specification timing parameters including THD:STA ≥600 ns and TBUF ≥1300 ns.
24LC16BT-M/SN 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:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
24LC16BT-M/SN FAQ
1.How can I place an order for 24LC16BT-M/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC16BT-M/SN 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-M/SN reliable?
The price and inventory of 24LC16BT-M/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC16BT-M/SN is usually 5 days.
3.What payment methods are accepted for 24LC16BT-M/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC16BT-M/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC16BT-M/SN?
24LC16BT-M/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC16BT-M/SN 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-M/SN?
For technical support, including 24LC16BT-M/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC16BT-M/SN requirements.
6.How does Aetrix verify that 24LC16BT-M/SN is sourced from the original manufacturer or authorized distributors?
All 24LC16BT-M/SN 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-M/SN meets industry standards.
7.What is the process for return or replacement of 24LC16BT-M/SN?
All 24LC16BT-M/SN units undergo pre-shipment inspection (PSI). If there is an issue with 24LC16BT-M/SN, 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-M/SN part is unused and in its original packaging.
Return procedure for 24LC16BT-M/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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