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Microchip Technology 24FC16HT-E/SN
- Part No.:
- 24FC16HT-E/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
24FC16HT-E/SN.pdf
- Description:
- IC EEPROM 16KBIT I2C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,498
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Product details
Overview
24FC16HT-E/SN from Microchip Technology Inc. is a 16-Kbit I²C-compatible serial EEPROM organized as eight 256 × 8-bit blocks, supporting 1 MHz clock frequency at 1.7–5.5 V supply, with hardware write-protect for half-array (400h–7FFh), and qualified for extended temperature operation (–40°C to +125°C) in 8-lead SOIC (SN) package. It enables nonvolatile data storage in space-constrained industrial control modules.
For engineers reviewing the 24FC16HT-E/SN datasheet, 24FC16HT-E/SN pinout, 24FC16HT-E/SN application, or 24FC16HT-E/SN equivalent, key selection criteria include its 1 MHz I²C speed at low voltage, half-array write-protection logic, extended-temp reliability, and SOIC-8 footprint compatibility with legacy 24AA/24LC designs.
Technical Context
The 24FC16HT-E/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 an 16-byte page write buffer, self-timed erase/write cycle, and address pointer that auto-increments during sequential reads.
It supports three read modes (current address, random, sequential) and two write modes (byte and page), with acknowledge polling used to detect write completion. The WP pin enables hardware-level protection of the upper 8 Kbits (addresses 400h–7FFh) when tied to VCC, while allowing full read access regardless of WP state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8), organized as eight 256-word blocks - enables modular firmware/data partitioning |
| I²C Clock Frequency | Up to 1 MHz at 1.7–5.5 V - supports high-throughput configuration updates in real-time systems |
| Write Cycle Time | ≤5 ms per byte or page - ensures rapid parameter persistence without blocking host CPU |
| Endurance | 1,000,000 erase/write cycles - suitable for logging applications with frequent writes |
| Data Retention | >200 years at +25°C - guarantees long-term integrity of calibration or security keys |
| Supply Voltage Range | 1.7 V to 5.5 V - interoperable with 1.8 V, 3.3 V, and 5 V microcontrollers without level shifting |
| Temperature Range | –40°C to +125°C (Extended grade) - validated for under-hood automotive and industrial edge nodes |
Pinout & Package
8-Lead SOIC (SN) package: 3.90 mm body width, 1.27 mm pitch, gull-wing leads, JEDEC MS-012AC compliant. RoHS-compliant matte tin finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSS | Ground reference | Return path for all internal circuitry; must be low-impedance connection to system GND plane |
| WP | Hardware write-protect input | Logic-high disables writes to upper 8 Kbits (400h–7FFh); no effect on reads or lower half |
| SCL | Serial clock input | Master-generated clock synchronizing all I²C transfers; requires external pull-up resistor |
| SDA | Serial data I/O | Open-drain bidirectional bus line; requires external pull-up; supports multi-master arbitration |
| VCC | Power supply | 1.7–5.5 V operation; decoupling capacitor (0.1 μF) required within 5 mm of pin |
| A0, A1, A2 | No-connect (NC) | Internally unconnected; may be left floating or tied to VSS/VCC without functional impact |
Key Features
| Feature | Design Value |
|---|---|
| 1 MHz I²C interface | Enables faster configuration loading vs. 400 kHz parts - reduces boot time in embedded systems |
| Half-array hardware write-protect | Prevents accidental overwrite of critical firmware parameters while permitting runtime update of user data |
| 16-byte page write buffer | Reduces I²C transaction count by up to 16× vs. byte writes - lowers bus overhead and power consumption |
| 1.7 V minimum operating voltage | Supports direct interfacing with ultra-low-power MCUs (e.g., PIC16LF, MSP430FR) without voltage boosters |
| ESD protection >4 kV | Enhances robustness in handling-sensitive manufacturing and field-replaceable modules |
Applications
| Industrial Sensor Calibration | Automotive Body Control Module |
|---|---|
Use Scenario: Storing factory-calibrated sensor offsets and gain coefficients in temperature/humidity transmitters. IC Role / Device Role / Timing Role: Nonvolatile configuration storage with guaranteed 200-year retention and 1M-cycle endurance. Use Value: Eliminates need for recalibration during product lifetime; supports field firmware updates without losing calibration data. | Use Scenario: Holding seat position memory, mirror presets, and lighting profiles in vehicle door modules. IC Role / Device Role / Timing Role: I²C slave EEPROM storing user preferences with extended-temp operation (–40°C to +125°C). Use Value: Enables reliable recall of settings after battery disconnect; WP pin protects factory defaults from overwriting. |
| Medical Diagnostic Device | Smart Energy Meter |
Use Scenario: Recording device usage logs, error history, and calibration timestamps in portable ECG monitors. IC Role / Device Role / Timing Role: Low-voltage (1.7 V) serial EEPROM supporting battery-powered operation and secure audit trails. Use Value: Maintains regulatory-compliant traceability data across 10+ years of field use without refresh. | Use Scenario: Storing tariff tables, metering constants, and tamper-event timestamps in DIN-rail electricity meters. IC Role / Device Role / Timing Role: AEC-Q100-qualified EEPROM with hardware write-protect for revenue-critical parameters. Use Value: Prevents unauthorized modification of billing parameters while enabling utility-side firmware upgrades. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA16HT-E/SN | Max I²C speed = 400 kHz; 1.7–5.5 V supply; same pinout and memory map | Limited to lower-speed I²C buses; suitable where timing margin is constrained | Select when system clock budget is tight or legacy controller lacks 1 MHz support |
| 24LC16BHT-E/SN | Min VCC = 2.5 V; max I²C speed = 400 kHz; identical package and pinout | Not usable in 1.8 V systems; lacks low-voltage flexibility of 24FC16HT-E/SN | Choose only if existing design already uses 2.5–5.5 V rails and does not require sub-2.5 V operation |
Compared with 24AA16HT-E/SN and 24LC16BHT-E/SN, the 24FC16HT-E/SN uniquely delivers 1 MHz I²C performance down to 1.7 V, making it the only option among the three for high-speed, ultra-low-voltage embedded logging and configuration storage.
Availability
24FC16HT-E/SN is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive body control modules, medical diagnostic devices, and smart energy meters requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 24FC16HT-E/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 24FC16HT-E/SN belongs to Microchip's 24XX16H family of I²C EEPROMs, designed specifically for reliable, low-power nonvolatile data storage in automotive, industrial, and medical applications demanding extended temperature operation and hardware write protection.
FAQ
What is the maximum I²C clock frequency supported by the 24FC16HT-E/SN?
The 24FC16HT-E/SN supports up to 1 MHz I²C clock frequency across its full 1.7 V to 5.5 V supply range. This is higher than the 400 kHz limit of the 24AA16HT-E/SN and 24LC16BHT-E/SN variants. At VCC < 2.5 V, the 24AA16HT-E/SN drops to 100 kHz, but the 24FC16HT-E/SN maintains 1 MHz operation - a key differentiator for high-speed embedded systems.
Does the 24FC16HT-E/SN require external pull-up resistors on SDA and SCL lines?
Yes, the 24FC16HT-E/SN requires external pull-up resistors on both SDA and SCL lines because these pins are open-drain. Recommended values are 2 kΩ for 1 MHz operation, 10 kΩ for 100 kHz. The exact value depends on bus capacitance and rise-time requirements per I²C specification; improper sizing can cause communication failures or excessive power draw.
How does the write-protect (WP) pin function on the 24FC16HT-E/SN?
When the WP pin of the 24FC16HT-E/SN is tied to VCC, write operations to memory addresses 400h–7FFh (upper 8 Kbits) are inhibited; reads remain fully functional. When WP is tied to VSS, full read/write access is enabled. This hardware-level protection prevents accidental firmware corruption while allowing runtime updates to user-configurable data stored in the lower half.
Is the 24FC16HT-E/SN compatible with standard I²C protocol implementations?
Yes, the 24FC16HT-E/SN is fully compliant with the standard two-wire I²C bus protocol, including Start/Stop conditions, 7-bit slave addressing (1010xxxR/W), acknowledge polling, and sequential/random read modes. It supports standard I²C timing parameters and requires no special controller extensions - interoperable with any I²C master (e.g., STM32, PIC, ESP32) using standard drivers.
What is the endurance and data retention specification for the 24FC16HT-E/SN?
The 24FC16HT-E/SN guarantees 1,000,000 erase/write cycles and data retention exceeding 200 years at +25°C. These specifications are validated per Microchip's characterization process and apply across the full extended temperature range (–40°C to +125°C). Endurance remains robust even in page-write mode, making it suitable for high-frequency logging applications.
24FC16HT-E/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:
- 1 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 450 ns
- Voltage - Supply:
- 1.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
24FC16HT-E/SN FAQ
1.How can I place an order for 24FC16HT-E/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 24FC16HT-E/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 24FC16HT-E/SN reliable?
The price and inventory of 24FC16HT-E/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24FC16HT-E/SN is usually 5 days.
3.What payment methods are accepted for 24FC16HT-E/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24FC16HT-E/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24FC16HT-E/SN?
24FC16HT-E/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24FC16HT-E/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 24FC16HT-E/SN?
For technical support, including 24FC16HT-E/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24FC16HT-E/SN requirements.
6.How does Aetrix verify that 24FC16HT-E/SN is sourced from the original manufacturer or authorized distributors?
All 24FC16HT-E/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 24FC16HT-E/SN meets industry standards.
7.What is the process for return or replacement of 24FC16HT-E/SN?
All 24FC16HT-E/SN units undergo pre-shipment inspection (PSI). If there is an issue with 24FC16HT-E/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 24FC16HT-E/SN part is unused and in its original packaging.
Return procedure for 24FC16HT-E/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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