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Microchip Technology 24LC16B-E/SN16KVAO
- Part No.:
- 24LC16B-E/SN16KVAO
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
24LC16B-E/SN16KVAO.pdf
- Description:
- IC EEPROM 16KBIT I2C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,076
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Product details
Overview
24LC16B-E/SN16KVAO 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/extended temperature support (–40°C to +125°C). It delivers low-power operation (1 μA standby, 1 mA read), hardware write-protection via WP pin, and 1 million erase/write cycles for embedded configuration storage in sensor nodes and power management systems.
For engineers reviewing the 24LC16B-E/SN16KVAO datasheet, 24LC16B-E/SN16KVAO pinout, 24LC16B-E/SN16KVAO application, or 24LC16B-E/SN16KVAO equivalent, key selection considerations include VCC range compatibility (2.5–5.5V), SOIC-8 package footprint, I²C timing compliance at extended temperature, and hardware write-protect implementation using the WP pin.
Technical Context
The 24LC16B-E/SN16KVAO functions as an I²C slave device with fixed 7-bit slave address prefix '1010' and three block-select bits (B2–B0), enabling access to eight 256-byte memory blocks. Its internal Address Pointer supports current-address, random, and sequential read modes, while page write buffering allows up to 16 bytes per write cycle without intermediate Stop conditions.
It implements Schmitt-trigger inputs on SDA and SCL for noise immunity, output slope control to suppress ground bounce, and ACK polling to detect write-cycle completion. The WP pin provides hardware-level write inhibition when tied to VCC, protecting the full 000h–7FFh address space without software intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8-bit), organized as eight 256-word blocks for hierarchical addressing |
| VCC Operating Range | 2.5V to 5.5V - mandates minimum 2.5V supply; not compatible with sub-2.5V systems |
| Max Clock Frequency | 400 kHz - defines maximum I²C bus speed; no 1 MHz support unlike 24FC16 |
| Page Write Buffer | 16 bytes - enables efficient burst writes within a single physical page boundary (0–15, 16–31, etc.) |
| Write Cycle Time | 5 ms maximum - determines minimum interval between write commands; self-timed and non-interruptible |
| Endurance & Retention | 1,000,000 erase/write cycles and >200 years data retention - validated at 25°C/5.5V; derates at elevated temperature/voltage |
| Temperature Range | –40°C to +125°C (Extended grade) - qualified for under-hood automotive and industrial ambient environments |
Pinout & Package
24LC16B-E/SN16KVAO uses the 8-Lead Plastic Small Outline (SN) package - narrow body, 3.90 mm width, 1.27 mm pitch - with gull-wing leads and exposed pad not connected (per DFN/TDFN note, but SN has no exposed pad; pin 1 index marked).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSS | Ground reference | Must be connected to system GND; serves as return path for all I/O and internal circuitry |
| WP | Hardware write-protect input | Tie to VCC to disable all writes; tie to VSS to enable full read/write access; no pull-up/down required |
| SCL | Serial clock input | Master-generated clock synchronizing all I²C transfers; requires external pull-up resistor (2 kΩ typical for 400 kHz) |
| SDA | Bidirectional data line | Open-drain I/O requiring external pull-up; carries addresses, data, and ACK/NACK signals |
| VCC | Power supply | 2.5–5.5V DC input; bypass capacitor (0.1 μF ceramic) recommended near pin |
| A0, A1, A2 | No-connect pins | Internally unconnected; may be left floating, tied to VSS, or tied to VCC with no functional impact |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs on SDA/SCL | Enables reliable operation on noisy PCBs or long traces by rejecting sub-50 ns spikes and improving noise margin |
| Output slope control | Prevents ground bounce during fast transitions, eliminating false logic states in shared power domains |
| Page write buffer (16 bytes) | Reduces I²C transaction overhead by up to 15× vs. byte-write mode for contiguous data updates |
| Hardware write-protection (WP pin) | Provides tamper-resistant configuration lock without firmware involvement or security keys |
| ESD protection >4 kV | Meets IEC 61000-4-2 Level 2 requirements, reducing need for external TVS on I²C lines |
Applications
| Industrial Sensor Calibration Storage | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain coefficients for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding calibration constants accessed at power-on reset via I²C. Use Value: Enables field-replaceable sensors without recalibration; leverages 125°C rating for enclosure-mounted deployments. | Use Scenario: Retaining user preferences (seat position, mirror angle, lighting profiles) across ignition cycles in entry-level BCMs. IC Role / Device Role / Timing Role: Dedicated parameter storage slave on low-speed vehicle I²C bus, isolated from high-noise CAN domains. Use Value: WP pin prevents accidental overwrites during firmware updates; 1M endurance supports 10+ years of daily use. |
| Smart Energy Meter Firmware Patch Log | Medical Infusion Pump Safety Parameters |
Use Scenario: Recording firmware patch identifiers and validation hashes after secure OTA updates in ANSI C12.22-compliant meters. IC Role / Device Role / Timing Role: Tamper-evident audit trail storage with write-lock enforced during normal operation. Use Value: Hardware WP ensures log integrity; 200-year retention meets utility asset lifecycle requirements. | Use Scenario: Storing FDA-mandated safety limits (max flow rate, occlusion pressure thresholds) that must survive battery replacement and sterilization cycles. IC Role / Device Role / Timing Role: Fail-safe configuration vault accessed only during boot or service mode, isolated from main MCU flash. Use Value: Extended temperature rating validates operation post-ethylene oxide sterilization (up to 125°C exposure); RoHS compliance meets medical directives. |
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/SN | Wider VCC range (1.7–5.5V); lower 100 kHz max clock below 2.5V; rated only to +85°C | Preferred for battery-powered devices with brown-out risk; unsuitable for under-hood or high-ambient industrial use | Select when sub-2.5V operation or cost sensitivity outweighs extended temperature needs |
| 24LC16BT-I/SN | Identical electrical specs and pinout; differs only in tape-and-reel packaging (T suffix) and industrial-grade marking | No functional difference; used where OEM requires traceable reel-based procurement | Drop-in replacement if reel packaging and I-temp marking are required; same SOIC-8 footprint and timing |
Compared with 24AA16-I/SN, the 24LC16B-E/SN16KVAO trades sub-2.5V operation for guaranteed 125°C functionality and 400 kHz performance across its full voltage range; versus 24LC16BT-I/SN, it adds extended temperature qualification and distinct reel labeling (16KVAO), making it suitable for automotive and harsh-environment designs where thermal margin is critical.
Availability
24LC16B-E/SN16KVAO is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive body control modules, smart energy metering, and medical infusion pump safety parameter storage requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 24LC16B-E/SN16KVAO 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 24LC16B belongs to Microchip's legacy serial EEPROM product line, designed specifically for reliable, low-power, I²C-based nonvolatile storage in cost-sensitive industrial, automotive, and consumer applications where firmware or calibration data persistence is essential.
FAQ
What is the full package type and lead count for 24LC16B-E/SN16KVAO?
The 24LC16B-E/SN16KVAO uses an 8-Lead Plastic Small Outline (SN) package - narrow body, 3.90 mm width, 1.27 mm pitch - with gull-wing leads and no exposed pad. Pin 1 is marked with a notch or dot. This matches JEDEC MS-012 standard and is compatible with standard SOIC-8 footprints.
Does 24LC16B-E/SN16KVAO support 1 MHz I²C operation?
No, the 24LC16B-E/SN16KVAO supports a maximum clock frequency of 400 kHz across its full 2.5V–5.5V VCC range. Unlike the 24FC16 variant, it does not support 1 MHz operation. Attempting 1 MHz signaling will result in timing violations and unreliable communication.
How is hardware write-protection implemented on 24LC16B-E/SN16KVAO?
Hardware write-protection on the 24LC16B-E/SN16KVAO is controlled by the WP pin: tying WP to VCC disables all write operations (including byte and page writes) while allowing unrestricted reads; tying WP to VSS enables full read/write access. No external logic or firmware control is needed.
What is the meaning of "E" and "SN" in 24LC16B-E/SN16KVAO?
In 24LC16B-E/SN16KVAO, "E" denotes the Extended temperature grade (–40°C to +125°C), and "SN" specifies the 8-Lead SOIC-Narrow package. "16KVAO" is Microchip's internal reel and traceability code indicating packaging format and lot identification - not a functional variant.
Can A0, A1, and A2 pins be used to configure the I²C address of 24LC16B-E/SN16KVAO?
No - A0, A1, and A2 are no-connect pins on the 24LC16B-E/SN16KVAO and have no internal connection. The device uses a fixed 7-bit I²C slave address prefix '1010' followed by three hardwired block-select bits (B2–B0), limiting system-level addressing to one device per bus unless external multiplexing is used.
24LC16B-E/SN16KVAO Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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 ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
24LC16B-E/SN16KVAO FAQ
1.How can I place an order for 24LC16B-E/SN16KVAO through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC16B-E/SN16KVAO 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-E/SN16KVAO reliable?
The price and inventory of 24LC16B-E/SN16KVAO are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC16B-E/SN16KVAO is usually 5 days.
3.What payment methods are accepted for 24LC16B-E/SN16KVAO?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC16B-E/SN16KVAO transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC16B-E/SN16KVAO?
24LC16B-E/SN16KVAO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC16B-E/SN16KVAO 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-E/SN16KVAO?
For technical support, including 24LC16B-E/SN16KVAO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC16B-E/SN16KVAO requirements.
6.How does Aetrix verify that 24LC16B-E/SN16KVAO is sourced from the original manufacturer or authorized distributors?
All 24LC16B-E/SN16KVAO 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-E/SN16KVAO meets industry standards.
7.What is the process for return or replacement of 24LC16B-E/SN16KVAO?
All 24LC16B-E/SN16KVAO units undergo pre-shipment inspection (PSI). If there is an issue with 24LC16B-E/SN16KVAO, 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-E/SN16KVAO part is unused and in its original packaging.
Return procedure for 24LC16B-E/SN16KVAO:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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