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Microchip Technology 24LC16BHT-I/SN
- Part No.:
- 24LC16BHT-I/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
24LC16BHT-I/SN.pdf
- Description:
- IC EEPROM 16KBIT I2C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,113
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Product details
Overview
24LC16BHT-I/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 hardware write-protect for half-array (400h–7FFh). It supports industrial temperature range (−40°C to +85°C) in an 8-lead SOIC package and is used for configuration storage in embedded controllers, power management units, and sensor calibration data retention.
For engineers reviewing the 24LC16BHT-I/SN datasheet, 24LC16BHT-I/SN pinout, 24LC16BHT-I/SN application, or 24LC16BHT-I/SN equivalent, key selection criteria include VCC range compatibility (2.5V–5.5V), I²C timing compliance at 400 kHz, half-array write-protection behavior, SOIC-8 mechanical fit, and endurance (>1 million cycles) under industrial thermal stress.
Technical Context
The 24LC16BHT-I/SN 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 a 16-byte page write buffer, self-timed erase/write cycle, and address pointer logic supporting current-address, random, and sequential read modes.
Write protection is controlled solely by the WP pin: tied to VSS enables full memory access; tied to VCC locks addresses 400h–7FFh while permitting reads across the entire 16-Kbit array. The device uses no internal A0/A1/A2 connections - those pins are unconnected and may be left floating or tied to VSS/VCC without functional impact.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 bytes), organized as eight 256 × 8-bit blocks for modular addressing |
| VCC Range | 2.5V to 5.5V - ensures compatibility with 3.3V and 5V systems without level shifting |
| Max Clock Frequency | 400 kHz - defines maximum I²C bus speed for byte/page writes and reads |
| Page Write Time | 5 ms maximum - determines minimum delay between successive page write commands |
| Endurance | 1,000,000 erase/write cycles - guarantees long-term reliability in frequent-update applications |
| Data Retention | 200 years - ensures nonvolatile data integrity over extended product lifecycles |
| Temp Range | Industrial: −40°C to +85°C - validated operation across automotive and industrial ambient conditions |
Pinout & Package
Package: 8-Lead Plastic Small Outline (SOIC), narrow body (3.90 mm), JEDEC MS-012 variant SN. Pin 1 marked via notch or bevel; lead finish matte tin (Sn).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A0) | Not connected | No internal connection; may float or tie to VSS/VCC without effect on function or address |
| 2 (A1) | Not connected | No internal connection; no role in device addressing or control |
| 3 (A2) | Not connected | No internal connection; unused per datasheet Table 2-1 and Figure 2-1 |
| 4 (VSS) | Ground reference | System common return path; required for all I/O and internal logic operation |
| 5 (SDA) | Serial data I/O | Open-drain bidirectional line requiring external pull-up; carries addresses, data, and ACK/NACK |
| 6 (SCL) | Serial clock input | Master-generated clock synchronizing all I²C transfers; edge-sensitive timing critical for AC specs |
| 7 (WP) | Write-protect control | Logic-high disables writes to upper half (400h–7FFh); logic-low enables full memory access |
| 8 (VCC) | Power supply | Primary voltage source; must remain within 2.5V–5.5V during all operations including write cycles |
Key Features
| Feature | Design Value |
|---|---|
| Half-array hardware write-protect | Enables secure storage of immutable firmware parameters or calibration constants in upper 8 Kbit while allowing runtime updates to lower 8 Kbit |
| 16-byte page write buffer | Reduces I²C transaction overhead by up to 16× versus byte-write mode, improving system-level write throughput |
| Schmitt-trigger SCL/SDA inputs | Rejects bus noise spikes <50 ns, ensuring reliable Start/Stop detection and data sampling in electrically noisy environments |
| Self-timed write cycle | Eliminates need for external timeout logic; host can poll ACK to detect completion without fixed delays |
| ESD protection >4 kV | Meets IEC 61000-4-2 Level 2 requirements, reducing risk of field failure during handling or board insertion |
Applications
| Industrial Sensor Node | Smart Power Supply |
|---|---|
Use Scenario: Storing calibrated offset/gain coefficients and sensor ID in battery-powered environmental monitors. IC Role / Device Role / Timing Role: Nonvolatile configuration store accessed at boot and during field recalibration via I²C. Use Value: Enables field-upgradable calibration without firmware changes; WP pin secures factory-set values against accidental overwrite. | Use Scenario: Holding output voltage/current setpoints, fault log history, and soft-start profiles in programmable DC-DC modules. IC Role / Device Role / Timing Role: Persistent parameter storage interfaced to MCU over 400 kHz I²C during initialization and runtime adjustment. Use Value: Supports hot-plug reconfiguration and retains settings across AC power loss; 200-year retention ensures lifetime data integrity. |
| Embedded Controller Bootloader | Medical Diagnostic Device |
Use Scenario: Storing bootloader version, secure boot keys, and last-known-good firmware hash in microcontroller-based edge devices. IC Role / Device Role / Timing Role: Secure configuration vault accessed only during boot sequence; WP pin permanently enabled after provisioning. Use Value: Prevents unauthorized firmware rollback or tampering; 1M-cycle endurance withstands repeated field updates. | Use Scenario: Recording patient-specific calibration data, usage counters, and error logs in portable ultrasound or ECG units. IC Role / Device Role / Timing Role: Reliable nonvolatile memory for safety-critical parameters, accessed during power-on self-test and diagnostics. Use Value: Industrial temp rating ensures operation inside sealed enclosures; RoHS compliance meets medical regulatory requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA16HT-I/SN | Wider VCC range (1.7V–5.5V); same 400 kHz max clock; identical SOIC-8 package and pinout | Supports 1.8V systems where 24LC16BHT-I/SN cannot operate; otherwise functionally interchangeable | Select when designing for dual-voltage platforms or low-power sleep modes below 2.5V |
| AT24C16C-SSHM-T | Same 16-Kbit size, SOIC-8 package, and I²C interface; rated for 1 MHz clock (vs. 400 kHz); different WP behavior (full-array protect only) | Lacks half-array write-protect granularity; requires software-managed protection if partial locking is needed | Choose for higher-speed buses or when full-memory lock suffices; verify timing margins at 1 MHz |
Compared with 24LC16BHT-I/SN, the 24AA16HT-I/SN extends low-voltage operation to 1.7V but retains identical timing and protection features, while the AT24C16C-SSHM-T offers faster clocking but sacrifices flexible half-array write protection - making it less suitable for mixed-read/write configuration storage.
Availability
24LC16BHT-I/SN is available at Aetrix Electronics and suitable for industrial sensor nodes, smart power supplies, and embedded controller bootloaders requiring stable component supply, long-term data retention, and industrial temperature resilience.
Supply support for 24LC16BHT-I/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 leading provider of microcontrollers, analog components, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 24LC16BHT-I/SN belongs to Microchip's 24XX16H family of I²C EEPROMs, designed specifically for robust, low-power configuration storage in industrial, automotive, and medical systems where data integrity and long-term reliability are critical.
FAQ
What is the supply voltage range supported by the 24LC16BHT-I/SN?
The 24LC16BHT-I/SN operates from 2.5V to 5.5V DC. It is not rated for voltages below 2.5V - unlike the 24AA16H variant which supports down to 1.7V. This makes the 24LC16BHT-I/SN suitable for standard 3.3V and 5V logic systems but incompatible with sub-2.5V ultra-low-power designs. All electrical characteristics in the datasheet DS20002118B are specified within this 2.5V–5.5V window.
Does the 24LC16BHT-I/SN require external pull-up resistors on SDA and SCL lines?
Yes, the 24LC16BHT-I/SN requires external pull-up resistors on both SDA and SCL lines because its I²C interface uses open-drain outputs. Typical values are 2 kΩ for 400 kHz operation and 10 kΩ for 100 kHz. The exact value depends on bus capacitance and desired rise time; Microchip recommends verifying TR/TF timing (≤300 ns at 5V) using the selected resistor and layout parasitics.
How does the write-protect (WP) pin function on the 24LC16BHT-I/SN?
On the 24LC16BHT-I/SN, the WP pin provides hardware-level write protection: when tied to VCC, writes to memory addresses 400h–7FFh (upper 8 Kbit) are inhibited while reads remain fully functional; when tied to VSS, full memory access is enabled. Unlike some EEPROMs, WP does not affect the lower 8 Kbit (000h–3FFh), enabling mixed-use configurations where calibration data is locked and operational logs remain writable.
What is the maximum write cycle time for a full page on the 24LC16BHT-I/SN?
The maximum write cycle time for a full 16-byte page on the 24LC16BHT-I/SN is 5 ms, as specified in Table 1-2 (TWC parameter). This self-timed duration begins after the master issues a Stop condition and ends when the device resumes acknowledging I²C commands. Host firmware must either wait 5 ms or use ACK polling to detect completion - no external timing circuitry is required.
Is the 24LC16BHT-I/SN pin-compatible with other 8-lead SOIC EEPROMs like the AT24C16?
The 24LC16BHT-I/SN is mechanically pin-compatible with standard 8-lead SOIC EEPROMs (e.g., AT24C16C-SSHM-T) due to identical MS-012/SN footprint and pin assignments (VSS, SDA, SCL, WP, VCC). However, functional compatibility requires verification of VCC range, clock speed, WP behavior, and I²C timing margins - especially since AT24C16C supports 1 MHz but lacks half-array protection, and 24LC16BHT-I/SN does not support 1.7V operation.
24LC16BHT-I/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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
24LC16BHT-I/SN FAQ
1.How can I place an order for 24LC16BHT-I/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC16BHT-I/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 24LC16BHT-I/SN reliable?
The price and inventory of 24LC16BHT-I/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC16BHT-I/SN is usually 5 days.
3.What payment methods are accepted for 24LC16BHT-I/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC16BHT-I/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC16BHT-I/SN?
24LC16BHT-I/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC16BHT-I/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 24LC16BHT-I/SN?
For technical support, including 24LC16BHT-I/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC16BHT-I/SN requirements.
6.How does Aetrix verify that 24LC16BHT-I/SN is sourced from the original manufacturer or authorized distributors?
All 24LC16BHT-I/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 24LC16BHT-I/SN meets industry standards.
7.What is the process for return or replacement of 24LC16BHT-I/SN?
All 24LC16BHT-I/SN units undergo pre-shipment inspection (PSI). If there is an issue with 24LC16BHT-I/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 24LC16BHT-I/SN part is unused and in its original packaging.
Return procedure for 24LC16BHT-I/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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