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Microchip Technology 24LC16BT-I/ST
- Part No.:
- 24LC16BT-I/ST
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
24LC16BT-I/ST.pdf
- Description:
- IC EEPROM 16KBIT I2C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,481
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Product details
Overview
24LC16BT-I/ST from Microchip Technology Inc. is a 16-Kbit I²C-compatible serial EEPROM organized as eight 256 × 8-bit memory blocks. It operates from 2.5V to 5.5V, supports up to 400 kHz clock frequency, features hardware write-protection via the WP pin, and delivers ≤1 μA standby current at industrial temperature (−40°C to +85°C). It is commonly used for configuration storage in embedded controllers and sensor calibration data retention.
For engineers reviewing the 24LC16BT-I/ST datasheet, 24LC16BT-I/ST pinout, 24LC16BT-I/ST application, or 24LC16BT-I/ST equivalent, key selection criteria include VCC range compatibility (2.5–5.5 V), I²C timing compliance at 400 kHz, SOIC-8 package footprint, WP-enabled hardware write protection, and guaranteed 1 million erase/write cycles with >200-year data retention.
Technical Context
The 24LC16BT-I/ST functions as an I²C slave device with fixed 4-bit control code '1010' and 3-bit block-select addressing, enabling access to eight independent 256-byte memory blocks. Its internal Address Pointer auto-increments during sequential reads and page writes, supporting current-address, random, and sequential read modes.
It implements Schmitt-trigger inputs and input filtering (≤50 ns spike suppression) for robust noise immunity on shared buses, and uses slope-controlled outputs to minimize ground bounce. Write operations are self-timed with a maximum 5 ms cycle time, and acknowledge polling is supported to detect write completion without fixed delays.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 bytes), organized as eight 256 × 8-bit blocks - enables modular configuration storage per subsystem. |
| VCC Range | 2.5V to 5.5V - compatible with 3.3V and 5V logic systems without level shifting. |
| Max Clock Frequency | 400 kHz - supports high-speed I²C communication while maintaining timing margin at full VCC range. |
| Page Write Buffer | 16-byte - allows efficient burst writes within a single physical page boundary (0–15, 16–31, etc.). |
| Write Endurance | 1,000,000 cycles - ensures long-term reliability in firmware update or logging applications. |
| Data Retention | >200 years - guarantees nonvolatile data integrity across product lifetime without refresh. |
| Standby Current | ≤1 μA (I-temp.) - minimizes power draw in battery-backed or energy-sensitive designs. |
Pinout & Package
24LC16BT-I/ST is supplied in an 8-lead SOIC (SN) package, 3.90 mm body width, with gull-wing leads and standard JEDEC MS-012AC outline. Pin 1 is marked by a beveled corner or notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSS | Ground reference | Primary return path for all internal circuitry; must be low-impedance connection to system GND plane. |
| WP | Hardware write-protect input | Logic-high (VCC) disables all write operations; tied low (VSS) enables full read/write access - no software overhead required. |
| SCL | I²C serial clock input | Asynchronous master-synchronized clock; requires external pull-up; defines timing for address/data transfer. |
| SDA | I²C bidirectional data line | Open-drain interface requiring external pull-up (2 kΩ typical for 400 kHz); carries slave address, word address, and data. |
| VCC | Power supply | Single-supply input supporting 2.5–5.5 V; decoupling capacitor (0.1 μF ceramic) required near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Input hysteresis ≥0.05×VCC - rejects bus noise up to 50 ns spikes without external filtering. |
| Output slope control | Controlled SDA/SCL rise/fall times - eliminates ground bounce in dense PCB layouts with shared return paths. |
| Page write capability | 16-byte buffer with automatic address increment - reduces I²C transaction count by up to 16× vs. byte-write mode. |
| Hardware write protection | Dedicated WP pin tied to VCC - prevents accidental overwrites during power transients or firmware faults. |
| I²C speed grades | 100 kHz (low-VCC) and 400 kHz (full VCC) support - maintains interoperability across legacy and modern controllers. |
Applications
| Industrial Sensor Calibration | Embedded Controller Configuration |
|---|---|
Use Scenario: Storing factory-trimmed offset/gain coefficients for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile parameter store accessed during power-up initialization via I²C; WP pin held low only during calibration, then tied high for runtime protection. Use Value: Eliminates need for external trimming components and enables field recalibration without hardware modification. | Use Scenario: Holding boot-time configuration flags (e.g., UART baud rate, GPIO defaults, network MAC address) in HVAC controller mainboards. IC Role / Device Role / Timing Role: I²C slave providing persistent settings to MCU during reset sequence; accessed at 400 kHz for sub-10ms initialization. Use Value: Reduces BOM count by replacing one-time-programmable fuses and enables remote firmware updates to configuration data. |
| Medical Device Settings Storage | Smart Meter Firmware Patch Log |
Use Scenario: Recording user-adjusted therapy parameters (e.g., pressure thresholds, alarm limits) in portable respiratory devices. IC Role / Device Role / Timing Role: Secure, low-power EEPROM interfaced to safety-certified MCU; WP pin monitored by watchdog circuit to prevent unauthorized writes. Use Value: Meets IEC 62304 Class C data integrity requirements with verified 1M-cycle endurance and >200-year retention. | Use Scenario: Logging patch version IDs and application checksums after OTA firmware updates in utility smart meters. IC Role / Device Role / Timing Role: High-reliability data logger using page writes to record 16-byte metadata per update; accessed only during meter idle periods. Use Value: Enables deterministic rollback and audit trail without consuming MCU flash resources or risking flash wear-out. |
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/ST | Wider VCC range (1.7–5.5 V); same 400 kHz max clock; identical SOIC-8 package and pinout. | Supports 1.7V operation - suitable for ultra-low-power or coin-cell-powered systems where 24LC16BT-I/ST cannot operate. | Select 24AA16T-I/ST only if sub-2.5V supply operation is required; otherwise, 24LC16BT-I/ST offers tighter VCC specification and consistent timing behavior above 2.5V. |
| AT24C16C-SSHM-T | Same 16-Kbit capacity, SOIC-8 package, and I²C interface; rated for 1 MHz clock (vs. 400 kHz), but requires ≥1.7V VCC. | Higher speed may improve throughput in high-bandwidth systems, but timing margins differ - not drop-in for 24LC16BT-I/ST designs relying on 400 kHz AC specs. | Choose AT24C16C-SSHM-T only when 1 MHz I²C is actively utilized and layout supports faster edge rates; verify THD:STA/TSU:STA compliance under actual VCC conditions. |
Compared with 24AA16T-I/ST and AT24C16C-SSHM-T, the 24LC16BT-I/ST provides optimized timing stability and lower standby current specifically within the 2.5–5.5 V range, making it preferred for industrial 3.3V/5V systems where voltage headroom is sufficient and deterministic 400 kHz operation is prioritized over extended voltage or speed flexibility.
Availability
24LC16BT-I/ST is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded controller configuration, and medical device settings storage requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for 24LC16BT-I/ST 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 infrastructure.
The 24LC16B family was designed for cost-sensitive, space-constrained embedded systems requiring reliable, low-power nonvolatile storage with industry-standard I²C interface and hardware write protection - targeting industrial, medical, and consumer applications.
FAQ
What is the operating voltage range for the 24LC16BT-I/ST?
The 24LC16BT-I/ST operates from 2.5V to 5.5V. This range excludes sub-2.5V operation - unlike the 24AA16 variant - ensuring stable timing and write performance across common 3.3V and 5V logic domains. Operation below 2.5V is not specified and may result in unreliable communication or failed writes.
Does the 24LC16BT-I/ST support 1 MHz I²C communication?
No, the 24LC16BT-I/ST is rated for a maximum clock frequency of 400 kHz across its full 2.5–5.5 V VCC range. While some units may function at higher speeds under specific conditions, 1 MHz operation is not guaranteed or characterized - use the 24FC16 variant if 1 MHz I²C is required.
How does the WP pin function on the 24LC16BT-I/ST?
The WP (Write-Protect) pin on the 24LC16BT-I/ST is a dedicated hardware enable: when tied to VCC, all write operations (byte and page) are inhibited while reads remain fully functional; when tied to VSS, full read/write access is granted. No software command or I²C transaction is needed to activate protection.
What is the memory organization of the 24LC16BT-I/ST?
The 24LC16BT-I/ST contains 16 Kbits (2048 bytes) of EEPROM, organized into eight independent 256 × 8-bit blocks. Block selection is performed via bits B2–B0 in the I²C control byte, allowing targeted access without affecting other blocks - useful for partitioned configuration or multi-subsystem storage.
Can the 24LC16BT-I/ST be used in automotive applications?
The 24LC16BT-I/ST is qualified for Industrial temperature range (−40°C to +85°C) and is RoHS compliant, but it is not AEC-Q100 qualified. For automotive applications requiring AEC-Q100 Grade 2 or 3 qualification, Microchip's 24LC16B-IP/SN or automotive-grade variants must be selected instead of the 24LC16BT-I/ST.
24LC16BT-I/ST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- 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-TSSOP
24LC16BT-I/ST FAQ
1.How can I place an order for 24LC16BT-I/ST through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC16BT-I/ST 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/ST reliable?
The price and inventory of 24LC16BT-I/ST 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/ST is usually 5 days.
3.What payment methods are accepted for 24LC16BT-I/ST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC16BT-I/ST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC16BT-I/ST?
24LC16BT-I/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC16BT-I/ST 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/ST?
For technical support, including 24LC16BT-I/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC16BT-I/ST requirements.
6.How does Aetrix verify that 24LC16BT-I/ST is sourced from the original manufacturer or authorized distributors?
All 24LC16BT-I/ST 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/ST meets industry standards.
7.What is the process for return or replacement of 24LC16BT-I/ST?
All 24LC16BT-I/ST units undergo pre-shipment inspection (PSI). If there is an issue with 24LC16BT-I/ST, 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/ST part is unused and in its original packaging.
Return procedure for 24LC16BT-I/ST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24LC16BT-I/ST Tags
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