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Microchip Technology 24LC16BT-I/OT
- Part No.:
- 24LC16BT-I/OT
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- SC-74A, SOT-753
- Datasheet:
-
24LC16BT-I/OT.pdf
- Description:
- IC EEPROM 16KBIT I2C SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:138,428
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Product details
Overview
24LC16BT-I/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, 5 ms max page write time, and industrial temperature range (–40°C to +85°C). It features hardware write-protection via the WP pin and supports up to 16-byte page writes in SOIC-8 packaging.
For engineers reviewing the 24LC16BT-I/OT datasheet, 24LC16BT-I/OT pinout, 24LC16BT-I/OT application, or 24LC16BT-I/OT equivalent, key selection considerations include VCC min (2.5V), I²C speed grade (400 kHz), page buffer size (16 bytes), write-protect functionality, and SOIC-8 package compatibility with legacy board layouts.
Technical Context
The 24LC16BT-I/OT implements a two-wire I²C slave interface with Schmitt-trigger inputs and slope-controlled outputs to suppress noise and eliminate ground bounce. Its internal architecture includes an 8-bit address pointer, 16-byte page latch buffer, and HV generator for EEPROM programming - all managed by dedicated memory control logic without external timing components.
It uses standard I²C protocol with 7-bit slave address format (1010xxxR/W), where the three block-select bits (B2–B0) define one of eight 256-word memory blocks. Write protection is implemented at the hardware level via the WP pin, disabling all write operations when tied to VCC while permitting full read access.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8), organized as eight 256-word blocks for flexible addressing |
| VCC Range | 2.5V to 5.5V - requires minimum 2.5V supply; not functional below this threshold |
| Max Clock Frequency | 400 kHz - supports standard-mode I²C; no 1 MHz capability unlike 24FC16 |
| Page Write Buffer | 16 bytes - enables burst writes within a single physical page boundary (0–15, 16–31, etc.) |
| Write Cycle Time | 5 ms maximum - self-timed erase/write; no external wait states required |
| Endurance & Retention | 1 million erase/write cycles and >200 years data retention - validated at 25°C, 5.5V |
| Operating Temp | –40°C to +85°C (Industrial grade) - qualified per I-temp specification, not extended or automotive |
Pinout & Package
24LC16BT-I/OT is supplied in an 8-lead SOIC (SN) package with 150-mil body width and standard 1.27 mm pitch. The exposed pad is absent - this is a plastic SOIC, not DFN/TDFN.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | A0 | No internal connection; may be left floating or tied to VSS/VCC without effect |
| 2 | A1 | No internal connection; unused pin with no electrical function |
| 3 | A2 | No internal connection; reserved for future family expansion but unconnected in this device |
| 4 | VSS | Ground reference for all internal circuitry and I/O pins |
| 5 | SDA | Bidirectional open-drain I²C data line requiring external pull-up resistor (2–10 kΩ) |
| 6 | SCL | Input-only I²C clock line synchronized to master-generated timing |
| 7 | WP | Hardware write-protect input - high = full array write-disabled, low = normal operation |
| 8 | VCC | Positive power supply (2.5–5.5V); powers EEPROM core, interface, and HV generator |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Ensures reliable signal recognition on SDA/SCL under noisy conditions (VHYS = 0.05×VCC) |
| Output slope control | Prevents ground bounce during switching, critical for stable I²C bus integrity |
| Hardware write-protection | Single-pin (WP) global lock for entire 2048-byte array - no firmware overhead needed |
| 16-byte page buffer | Reduces I²C transaction count by up to 16× versus byte-write mode, improving system throughput |
| Low-power operation | 1 μA max standby current (I-temp) enables use in battery-backed or energy-sensitive systems |
Applications
| Industrial Sensor Calibration | Consumer Remote Control Memory |
|---|---|
Use Scenario: Storing factory-trimmed sensor offset/gain coefficients and runtime calibration data in programmable logic controllers and RTUs. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed infrequently via I²C during power-up or maintenance mode. Use Value: Enables field-replaceable sensor modules without reprogramming host MCU firmware; retains settings across 10+ year deployments. | Use Scenario: Saving user preferences (volume, channel presets, backlight brightness) in IR remote controls with coin-cell battery power. IC Role / Device Role / Timing Role: Low-energy persistent memory accessed only on button press or power cycle, minimizing active time on I²C bus. Use Value: 1 μA standby current extends CR2032 battery life beyond 5 years; 16-byte page writes reduce wake-up duration and power consumption. |
| Medical Device Configuration | Automotive Body Control Module |
Use Scenario: Holding regulatory-compliant device identification, usage logs, and safety-critical parameter limits in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure, tamper-resistant storage with hardware write-lock enabled during normal operation. Use Value: WP pin tied to VCC prevents accidental overwrites during firmware updates or ESD events; >200-year data retention meets medical long-term archiving requirements. | Use Scenario: Storing seat/mirror position memory, door lock settings, and lighting profiles in vehicle BCMs. IC Role / Device Role / Timing Role: I²C slave memory interfaced directly to 8-bit microcontroller with minimal GPIO overhead. Use Value: SOIC-8 footprint ensures drop-in replacement in existing automotive PCBs; 400 kHz speed supports real-time profile recall without bus contention. |
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 | Lower VCC min (1.7V), same 400 kHz speed and SOIC-8 package; shares identical pinout and command set | Enables operation in 1.8V systems (e.g., Li-ion powered IoT nodes) where 24LC16BT-I/OT cannot function | Select when supply voltage may dip below 2.5V; verify system-level noise immunity as 24AA16 has identical Schmitt thresholds |
| 24LC16B-I/P | Same electrical specs and memory map, but in 8-lead PDIP package instead of SOIC-8 | Used in through-hole prototyping, legacy repair, or industrial control panels requiring socketed components | Choose for hand-soldering, breadboarding, or backward compatibility with PDIP-based designs - no PCB redesign needed |
Compared with 24AA16T-I/OT, the 24LC16BT-I/OT trades wider voltage range for guaranteed 2.5V+ operation and tighter industrial temp validation; compared with 24LC16B-I/P, it offers identical functionality in surface-mount form factor for automated assembly and space-constrained layouts.
Availability
24LC16BT-I/OT is available at Aetrix Electronics and suitable for industrial sensor calibration, consumer remote control memory, medical device configuration, and automotive body control module applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for 24LC16BT-I/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 devices, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 24LC16B series was designed specifically for cost-sensitive, low-power I²C-based systems requiring reliable nonvolatile storage in compact SOIC and TSSOP packages - targeting industrial, consumer, and medical end equipment.
FAQ
What is the minimum supply voltage required for reliable operation of the 24LC16BT-I/OT?
The 24LC16BT-I/OT requires a minimum VCC of 2.5V for guaranteed operation across its full industrial temperature range (–40°C to +85°C). Operation below 2.5V is not specified and may result in incomplete writes, read errors, or failure to acknowledge I²C commands. This distinguishes it from the 24AA16T-I/OT, which supports down to 1.7V.
Does the 24LC16BT-I/OT support 1 MHz I²C communication?
No, the 24LC16BT-I/OT does not support 1 MHz I²C. Its maximum clock frequency is 400 kHz under all valid operating conditions (2.5V ≤ VCC ≤ 5.5V). The 1 MHz capability is exclusive to the 24FC16 variant; attempting 1 MHz operation on the 24LC16BT-I/OT will cause communication failures and missed acknowledgments.
How does the WP pin function on the 24LC16BT-I/OT?
The WP (Write-Protect) pin on the 24LC16BT-I/OT provides hardware-level protection for the entire 2048-byte memory array. When WP is tied to VCC, all write operations (byte and page) are inhibited - reads remain fully functional. When WP is tied to VSS or left floating, normal read/write access is enabled. No software command is required to activate or deactivate this feature.
What is the page size and boundary behavior during write operations on the 24LC16BT-I/OT?
24LC16BT-I/OT has a fixed 16-byte page buffer and enforces strict physical page boundaries (e.g., addresses 0x00–0x0F, 0x10–0x1F). If a page write crosses a boundary - for example, starting at 0x0E and writing 16 bytes - the excess data wraps around to the start of the same page (0x00), overwriting prior bytes. Application firmware must ensure write addresses align to page boundaries to avoid unintended corruption.
Is the 24LC16BT-I/OT qualified for automotive applications?
No, the 24LC16BT-I/OT is rated for Industrial temperature range (–40°C to +85°C) and is not AEC-Q100 qualified. While the broader 24XX16 family includes AEC-Q100 qualified variants (e.g., certain 24LC16B grades), the specific 24LC16BT-I/OT part number is designated for industrial use only. For automotive body control or infotainment systems, consult Microchip's AEC-Q100-certified 24LC16B variants with appropriate suffixes.
24LC16BT-I/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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
24LC16BT-I/OT FAQ
1.How can I place an order for 24LC16BT-I/OT through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC16BT-I/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-I/OT reliable?
The price and inventory of 24LC16BT-I/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-I/OT is usually 5 days.
3.What payment methods are accepted for 24LC16BT-I/OT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC16BT-I/OT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC16BT-I/OT?
24LC16BT-I/OT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC16BT-I/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-I/OT?
For technical support, including 24LC16BT-I/OT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC16BT-I/OT requirements.
6.How does Aetrix verify that 24LC16BT-I/OT is sourced from the original manufacturer or authorized distributors?
All 24LC16BT-I/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-I/OT meets industry standards.
7.What is the process for return or replacement of 24LC16BT-I/OT?
All 24LC16BT-I/OT units undergo pre-shipment inspection (PSI). If there is an issue with 24LC16BT-I/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-I/OT part is unused and in its original packaging.
Return procedure for 24LC16BT-I/OT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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