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Microchip Technology 24LC16B-I/MC
- Part No.:
- 24LC16B-I/MC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-VFDFN Exposed Pad
- Datasheet:
-
24LC16B-I/MC.pdf
- Description:
- IC EEPROM 16KBIT I2C 400KHZ 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,643
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Product details
Overview
24LC16B-I/MC 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 widely used in embedded system configuration storage, sensor calibration data retention, and firmware parameter backup.
For engineers reviewing the 24LC16B-I/MC datasheet, 24LC16B-I/MC pinout, 24LC16B-I/MC application, or 24LC16B-I/MC equivalent, key selection criteria include VCC range compatibility (2.5–5.5V), I²C timing compliance (400 kHz max), page write buffer size (16 bytes), endurance (1 million cycles), and package-specific pin mapping for SOIC-8 (MC).
Technical Context
The 24LC16B-I/MC 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 auto-increments during sequential reads and page writes, supporting current address, random, and sequential read modes.
It implements Schmitt-trigger inputs and output slope control to suppress noise and eliminate ground bounce on shared I²C buses. Write operations are self-timed with a maximum 5 ms erase/write cycle, and acknowledge polling is supported to determine write completion without fixed delay timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8), organized as eight 256-word blocks - enables modular configuration storage with block-level addressing. |
| VCC Range | 2.5V to 5.5V - compatible with standard 3.3V and 5V logic systems; excludes sub-2.5V operation unlike 24AA16/24FC16. |
| Max Clock Frequency | 400 kHz - supports high-speed I²C communication; no 1 MHz capability (reserved for 24FC16). |
| Page Write Buffer | 16 bytes - allows efficient burst writes within a single physical page boundary (0–15, 16–31, etc.), reducing bus overhead. |
| Endurance | 1,000,000 erase/write cycles - ensures long-term reliability in frequently updated parameter storage applications. |
| Data Retention | Greater than 200 years - guarantees nonvolatile data integrity across product lifecycles without refresh. |
| Standby Current | ≤1 μA (I-temp.) - minimizes power draw in battery-backed or energy-sensitive systems during idle states. |
Pinout & Package
The 24LC16B-I/MC is supplied in an 8-lead SOIC (Small Outline Integrated Circuit) package, designated by suffix "MC". Pin 1 is located at the top-left corner with a beveled edge or notch marking; the exposed pad is not present in SOIC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSS (Pin 4) | Ground reference | Common return path for all internal circuitry; must be connected to system GND for stable operation. |
| SDA (Pin 5) | Serial Data I/O | Open-drain bidirectional bus line requiring external pull-up (2–10 kΩ); carries addresses, commands, and data. |
| SCL (Pin 6) | Serial Clock input | Master-generated clock synchronizing all I²C transfers; rising/falling edges define data sampling and setup/hold windows. |
| WP (Pin 7) | Write-Protect control | Logic-high disables all write operations (000h–7FFh); tied low for full read/write access - enables field-safe firmware updates. |
| VCC (Pin 8) | Power supply | Primary voltage source (2.5–5.5V); decoupling capacitor (0.1 μF) recommended near pin for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Provides ≥50 mV hysteresis (0.05×VCC) on SDA/SCL - rejects bus noise up to 50 ns spikes without false triggering. |
| Output slope control | Controls SDA fall time to ≤250 ns (CB ≤ 400 pF) - prevents ground bounce and EMI in dense PCB layouts. |
| Hardware write-protection | Dedicated WP pin ties directly to VCC/GND - eliminates software vulnerability; protects calibration data during power-up glitches. |
| I²C bus compatibility | Fully compliant with standard (100 kHz), fast-mode (400 kHz), and repeated-start protocols - interoperable with MCU peripherals from STM32, PIC, and ARM Cortex-M families. |
| ESD protection | Exceeds 4,000 V HBM - withstands handling and board-level electrostatic discharge without latch-up or parametric shift. |
Applications
| Industrial Sensor Node | Medical Device Calibration |
|---|---|
Use Scenario: Remote temperature/humidity sensor node stores factory calibration coefficients and runtime offset corrections between wake cycles. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding 16-byte per-sensor trim values; accessed via I²C during initialization. Use Value: Enables field-deployable accuracy without reprogramming; 200-year retention ensures calibration validity over device lifetime. | Use Scenario: Portable blood glucose meter retains user-specific calibration curves and usage history across battery replacements. IC Role / Device Role / Timing Role: Secure parameter store with WP pin hardwired to GND during manufacturing and VCC during field use - prevents accidental overwrite. Use Value: Meets IEC 62304 safety requirements for data integrity; 1M-cycle endurance supports daily recalibration over 10+ years. |
| Smart Energy Meter | Automotive Body Control Module |
Use Scenario: Electricity meter logs tamper events, tariff schedules, and metering constants in harsh environments (–40°C to +85°C). IC Role / Device Role / Timing Role: Industrial-grade EEPROM interfacing with metrology SoC via 400 kHz I²C; operates reliably at full VCC range (2.5–5.5V). Use Value: AEC-Q100 qualified variant available; extended temperature support ensures compliance with ANSI C12.1 and EN 50470 standards. | Use Scenario: BCM stores seat/mirror position presets, door lock configurations, and lighting profiles across vehicle ignition cycles. IC Role / Device Role / Timing Role: Slave device on vehicle's body domain I²C bus; WP pin controlled by microcontroller to lock settings after user confirmation. Use Value: 16-byte page writes reduce bus contention during multi-parameter saves; low 1 μA standby current extends battery life in sleep mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA16-I/MC | Wider VCC range (1.7–5.5V); supports 100 kHz below 2.5V; same 16Kbit density and SOIC-8 package. | Preferred for 1.8V/2.5V systems (e.g., ultra-low-power IoT nodes); lacks 400 kHz performance at low voltage. | Select when operating below 2.5V is required; verify timing margins at target VCC. |
| AT24C16C-SSHM-T | Same 16Kbit, SOIC-8, 2.5–5.5V, 400 kHz; higher endurance (4M cycles); different write-protection scheme (software-configurable). | Used where extended rewrite cycles are critical (e.g., logging buffers); requires firmware changes for WP control logic. | Choose for enhanced longevity in high-write-frequency applications; validate I²C ACK polling behavior. |
Compared with 24LC16B-I/MC, the 24AA16-I/MC extends low-voltage operation but sacrifices high-speed I²C capability below 2.5V, while the AT24C16C-SSHM-T offers quadrupled endurance and flexible write protection at the cost of vendor-specific command set integration.
Availability
24LC16B-I/MC is available at Aetrix Electronics and suitable for industrial sensor nodes, medical device calibration storage, and automotive body control modules requiring stable component supply, long-term data retention, and I²C bus compatibility.
Supply support for 24LC16B-I/MC 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 belongs to Microchip's legacy serial EEPROM product line, designed specifically for reliable, low-power, I²C-based nonvolatile data storage in space-constrained embedded systems across industrial, medical, and automotive markets.
FAQ
What is the maximum I²C clock frequency supported by the 24LC16B-I/MC?
The 24LC16B-I/MC supports a maximum I²C clock frequency of 400 kHz when VCC is between 2.5V and 5.5V. It does not support 1 MHz operation - that capability is exclusive to the 24FC16 family. At VCC < 2.5V, the device is not rated for operation; therefore, 400 kHz is its absolute maximum validated speed for the 24LC16B-I/MC.
Does the 24LC16B-I/MC require external pull-up resistors on SDA and SCL lines?
Yes, the 24LC16B-I/MC requires external pull-up resistors on both SDA and SCL lines because its I/O pins are open-drain. For 400 kHz operation, a 2 kΩ pull-up to VCC is recommended; for 100 kHz, 10 kΩ is typical. The exact value depends on bus capacitance and rise-time requirements specified in the I²C standard.
How does the WP pin function on the 24LC16B-I/MC?
On the 24LC16B-I/MC, the WP (Write-Protect) pin is a logic-level input: when tied to VCC, the entire memory array (addresses 000h–7FFh) is write-inhibited while reads remain enabled; when tied to VSS (GND), full read/write access is granted. No internal pull-up/down is provided - the pin must be externally biased.
Can the 24LC16B-I/MC be used in automotive applications?
Yes - the 24LC16B-I/MC is AEC-Q100 qualified for automotive applications and offered in extended temperature grade (–40°C to +125°C) variants. While the "I" suffix denotes industrial grade (–40°C to +85°C), the underlying silicon and qualification testing support deployment in body electronics, infotainment, and ADAS subsystems meeting automotive reliability requirements.
What is the page write capability of the 24LC16B-I/MC?
The 24LC16B-I/MC features a 16-byte page write buffer, allowing up to 16 bytes to be written in a single I²C transaction - provided all addresses fall within the same physical page (e.g., 0x00–0x0F, 0x10–0x1F). Crossing a 16-byte boundary causes wraparound within the page, not continuation to the next page; software must enforce alignment.
24LC16B-I/MC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-VFDFN Exposed Pad
- Packaging:
- Tube
- 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-DFN (2x3)
24LC16B-I/MC FAQ
1.How can I place an order for 24LC16B-I/MC through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC16B-I/MC 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 24LC16B-I/MC reliable?
The price and inventory of 24LC16B-I/MC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC16B-I/MC is usually 5 days.
3.What payment methods are accepted for 24LC16B-I/MC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC16B-I/MC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC16B-I/MC?
24LC16B-I/MC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC16B-I/MC 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 24LC16B-I/MC?
For technical support, including 24LC16B-I/MC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC16B-I/MC requirements.
6.How does Aetrix verify that 24LC16B-I/MC is sourced from the original manufacturer or authorized distributors?
All 24LC16B-I/MC 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 24LC16B-I/MC meets industry standards.
7.What is the process for return or replacement of 24LC16B-I/MC?
All 24LC16B-I/MC units undergo pre-shipment inspection (PSI). If there is an issue with 24LC16B-I/MC, 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 24LC16B-I/MC part is unused and in its original packaging.
Return procedure for 24LC16B-I/MC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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