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Microchip Technology 24LC16BT-E/OT
- Part No.:
- 24LC16BT-E/OT
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- SC-74A, SOT-753
- Datasheet:
-
24LC16BT-E/OT.pdf
- Description:
- IC EEPROM 16KBIT I2C SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:6,007
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Product details
Overview
24LC16BT-E/OT 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, 1 μA standby current (I-temp), and hardware write-protection via the WP pin. It supports industrial (–40°C to +85°C) and extended (–40°C to +125°C) temperature ranges and is packaged in an 8-lead SOT-23.
For engineers reviewing the 24LC16BT-E/OT datasheet, 24LC16BT-E/OT pinout, 24LC16BT-E/OT application, or 24LC16BT-E/OT equivalent, key selection criteria include VCC range compatibility (2.5–5.5V), I²C timing compliance at 400 kHz, page write buffer size (16 bytes), endurance (1 million cycles), and extended temperature support up to +125°C.
Technical Context
The 24LC16BT-E/OT functions as an I²C slave device with fixed 4-bit control code '1010' and 3-bit block-select addressing, enabling access to eight 256-word memory blocks. Its internal Address Pointer supports current-address, random, and sequential read modes, while Schmitt-trigger inputs and output slope control suppress bus noise and ground bounce.
Write operations include byte-write and page-write (up to 16 bytes per page), both self-timed with maximum 5 ms erase/write cycle. Acknowledge polling allows host systems to detect write completion without fixed delays, and hardware write-protection is enabled by tying WP to VCC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8), organized as eight 256-word blocks for flexible block-level addressing |
| VCC Range | 2.5V to 5.5V - ensures compatibility with 3.3V and 5V logic systems; excludes sub-2.5V operation unlike 24AA16/24FC16 |
| Max Clock Frequency | 400 kHz - defines maximum I²C bus speed; requires THIGH ≥ 600 ns and TLOW ≥ 1300 ns at VCC ≥ 2.5V |
| Page Write Buffer | 16 bytes - enables efficient burst writes within a single physical page boundary (0–15, 16–31, etc.) |
| Endurance | 1,000,000 erase/write cycles - supports long-term data logging and configuration storage in field-deployed equipment |
| Data Retention | 200 years - guarantees nonvolatile data integrity over product lifetime without refresh |
| Temperature Range | –40°C to +125°C (Extended grade) - qualified for under-hood automotive, industrial controls, and high-ambient environments |
Pinout & Package
24LC16BT-E/OT is housed in an 8-lead SOT-23 package (JEDEC MO-178AA), measuring 2.9 mm × 1.6 mm × 1.1 mm, with gull-wing leads and exposed thermal pad connected to VSS or left floating per design requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SCL | Serial Clock Input | Asynchronous master-generated clock synchronizing all I²C transfers; requires external pull-up; Schmitt-triggered for noise immunity |
| SDA | Bidirectional Data I/O | Open-drain interface requiring external pull-up (2 kΩ typical for 400 kHz); changes only during SCL low except for Start/Stop |
| WP | Hardware Write-Protect Input | Logic-high (VCC) disables all write operations across full address range (000–7FF); no effect on reads |
| VCC | Power Supply | 2.5V–5.5V supply input; powers internal EEPROM array, HV generator, and I/O circuitry |
| VSS | Ground Reference | System ground return path; also connects to exposed thermal pad in SOT-23 package |
Key Features
| Feature | Design Value |
|---|---|
| I²C Bus Compatibility | Fully compliant with Philips I²C specification - supports standard-mode (100 kHz), fast-mode (400 kHz), and multi-master arbitration |
| Noise Immunity | Schmitt-trigger inputs + 50 ns input filter suppression - prevents false Start/Stop detection on electrically noisy PCBs or long traces |
| Page Write Efficiency | 16-byte buffer reduces I²C transaction overhead - cuts write time vs. byte-wise writes by up to 94% for full-page updates |
| Low-Power Operation | 1 μA max standby current at I-temp - extends battery life in portable and energy-harvesting applications |
| Robust Reliability | ESD protection >4 kV HBM - withstands handling and system-level ESD events without latch-up or parametric shift |
Applications
| Industrial Sensor Calibration Storage | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain coefficients for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed at power-on reset via I²C; no timing-critical latency required. Use Value: Enables plug-and-play sensor replacement without manual recalibration; 200-year retention ensures calibration survives full equipment lifecycle. | Use Scenario: Holding seat position memory, mirror presets, and lighting profiles in 12V automotive BCMs. IC Role / Device Role / Timing Role: I²C slave storing user preferences; operates across –40°C to +125°C ambient with 2.5V minimum VCC margin. Use Value: Extended temperature rating eliminates derating concerns in engine-bay-adjacent modules; WP pin prevents accidental overwrites during firmware updates. |
| Medical Infusion Pump Settings | Smart Energy Meter Firmware Patch Storage |
Use Scenario: Securing drug library parameters, dose limits, and audit logs in Class II medical devices requiring traceability. IC Role / Device Role / Timing Role: Tamper-resistant configuration store with hardware write-protection (WP = VCC) during normal operation. Use Value: Prevents unauthorized runtime modification of safety-critical settings; 1M-cycle endurance supports daily log updates over 10+ years. | Use Scenario: Storing field-deployed firmware patches and cryptographic keys in utility-grade electricity meters. IC Role / Device Role / Timing Role: Secure boot-time configuration loader accessed via isolated I²C bus; must survive 15+ year outdoor deployment. Use Value: 200-year data retention and AEC-Q100 qualification ensure reliability in unattended, maintenance-free installations. |
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/OT | Wider VCC range (1.7–5.5V); lower 100 kHz max clock below 2.5V; same 16Kbit density and SOT-23 package | Supports battery-powered systems down to 1.7V; not rated for +125°C operation | Select when ultra-low-voltage operation is required and extended temperature is unnecessary |
| 24FC16T-E/OT | 1 MHz I²C clock support; same VCC range (1.7–5.5V); identical pinout and package | Enables faster configuration loading in high-throughput test systems; requires tighter AC timing margins | Select when bus speed >400 kHz is mandatory and system VCC stability supports 1 MHz timing |
Compared with 24AA16T-I/OT and 24FC16T-E/OT, the 24LC16BT-E/OT uniquely balances 400 kHz performance with extended temperature capability and 2.5V minimum VCC - making it optimal for automotive and industrial applications where voltage margin and thermal robustness outweigh raw speed or sub-2.5V operation.
Availability
24LC16BT-E/OT is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor calibration storage, medical infusion pump settings, and smart energy meter firmware patch storage requiring stable component supply across extended temperature and long-lifecycle deployments.
Supply support for 24LC16BT-E/OT 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, serving automotive, industrial, consumer, and communications markets with high-reliability silicon and development tools.
The 24LC16B family delivers cost-effective, low-power serial EEPROMs optimized for configuration storage and data logging in space-constrained, thermally demanding applications - especially where AEC-Q100 qualification and extended temperature operation are critical.
FAQ
What is the maximum I²C clock frequency supported by the 24LC16BT-E/OT?
The 24LC16BT-E/OT supports a maximum I²C clock frequency of 400 kHz when VCC is between 2.5V and 5.5V. This is specified in the Device Selection Table and confirmed in AC Characteristics (Table 1-2, Param. No. 1). It does not support 1 MHz operation like the 24FC16 variant, nor does it operate below 2.5V - distinguishing it from the 24AA16 series.
Does the 24LC16BT-E/OT require external pull-up resistors on SDA and SCL lines?
Yes, the 24LC16BT-E/OT requires external pull-up resistors on both SDA and SCL lines because its I/O pins are open-drain. The datasheet recommends 2 kΩ for 400 kHz operation. Pull-ups ensure proper logic high levels and meet rise-time specifications (TR ≤ 300 ns at VCC ≥ 2.5V), which is essential for reliable I²C communication in the 24LC16BT-E/OT.
How does the WP pin function on the 24LC16BT-E/OT?
On the 24LC16BT-E/OT, the WP (Write-Protect) pin is a logic-controlled enable/disable for all write operations. When tied to VCC, the entire memory array (addresses 000–7FF) is write-protected; reads remain fully functional. When tied to VSS (or left floating, though not recommended), normal read/write access is enabled. This hardware-level protection is active regardless of I²C command state.
What is the page write buffer size of the 24LC16BT-E/OT, and why does it matter?
The 24LC16BT-E/OT has a 16-byte page write buffer. This allows up to 16 bytes to be loaded into the on-chip latch and written to memory in a single self-timed cycle (≤5 ms), significantly improving throughput versus byte-wise writes. However, page writes must stay within physical page boundaries (e.g., addresses 0–15, 16–31); crossing boundaries causes wraparound - a constraint critical for correct firmware or configuration updates in the 24LC16BT-E/OT.
Is the 24LC16BT-E/OT qualified for automotive applications?
Yes, the 24LC16BT-E/OT is AEC-Q100 qualified and rated for the Extended temperature range (–40°C to +125°C), making it suitable for automotive applications including body control modules, infotainment subsystems, and ADAS-related configuration storage. Its 2.5V–5.5V VCC range aligns with 12V automotive electrical systems after regulation, and its 4 kV HBM ESD rating exceeds typical automotive requirements.
24LC16BT-E/OT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- 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 ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
24LC16BT-E/OT FAQ
1.How can I place an order for 24LC16BT-E/OT through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC16BT-E/OT 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-E/OT reliable?
The price and inventory of 24LC16BT-E/OT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC16BT-E/OT is usually 5 days.
3.What payment methods are accepted for 24LC16BT-E/OT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC16BT-E/OT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC16BT-E/OT?
24LC16BT-E/OT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC16BT-E/OT 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-E/OT?
For technical support, including 24LC16BT-E/OT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC16BT-E/OT requirements.
6.How does Aetrix verify that 24LC16BT-E/OT is sourced from the original manufacturer or authorized distributors?
All 24LC16BT-E/OT 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-E/OT meets industry standards.
7.What is the process for return or replacement of 24LC16BT-E/OT?
All 24LC16BT-E/OT units undergo pre-shipment inspection (PSI). If there is an issue with 24LC16BT-E/OT, 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-E/OT part is unused and in its original packaging.
Return procedure for 24LC16BT-E/OT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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