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Microchip Technology 24LC16BT/ST
- Part No.:
- 24LC16BT/ST
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
24LC16BT/ST.pdf
- Description:
- IC EEPROM 16KBIT I2C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,799
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Product details
Overview
24LC16BT/ST 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 temperature range (–40°C to +85°C). It features hardware write-protection via the WP pin and supports up to 16-byte page writes in SOIC-8 packaging.
For engineers reviewing the 24LC16BT/ST datasheet, 24LC16BT/ST pinout, 24LC16BT/ST application, or 24LC16BT/ST equivalent, this device serves as a low-power, noise-immune nonvolatile memory for embedded configuration storage, sensor calibration data retention, and firmware parameter backup in space-constrained industrial control and automotive subsystems.
Technical Context
The 24LC16BT/ST implements a two-wire I²C slave interface with Schmitt-trigger inputs and slope-controlled outputs to suppress ground bounce and bus noise. Its internal architecture includes an 8-bit address pointer, 16-byte page latch buffer, and high-voltage generator for EEPROM programming - all managed by on-chip control logic that enforces self-timed erase/write cycles without external timing components.
It uses a fixed 4-bit device code (1010b) plus 3-bit block-select bits (B2–B0) to form a 7-bit slave address, enabling single-device addressing per I²C bus segment. Write protection is implemented at the hardware level: tying WP to VCC disables all write operations while preserving full read functionality across the entire 000h–7FFh address space.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 bytes), organized as eight 256-word blocks - enables modular data partitioning for multi-function systems. |
| Interface | I²C-compatible two-wire serial interface - reduces PCB routing complexity and pin count versus parallel EEPROMs. |
| VCC Range | 2.5V to 5.5V - compatible with standard 3.3V and 5V logic domains without level-shifting circuitry. |
| Max Clock Frequency | 400 kHz - supports fast configuration loading while maintaining robustness on noisy industrial buses. |
| Page Write Buffer | 16-byte page buffer - improves write throughput by reducing I²C transaction overhead per byte stored. |
| Write Cycle Time | 5 ms maximum (byte or page) - defines worst-case latency before next bus operation can commence. |
| Endurance | 1 million erase/write cycles - ensures long-term reliability for frequently updated calibration or logging applications. |
| Data Retention | 200 years - guarantees nonvolatile data integrity over product lifetime without refresh. |
Pinout & Package
24LC16BT/ST is supplied in an 8-lead SOIC (SN) package with 3.90 mm body width, JEDEC MS-012AC compliant footprint, and matte tin (Sn) lead finish. Pin 1 is marked with a beveled corner or dot; exposed pad is not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSS | Ground reference | Return path for all internal circuits; must be connected to system GND with low-impedance trace. |
| WP | Hardware write-protect input | Logic-high (VCC) disables all write operations; logic-low (VSS) enables full read/write access. |
| SCL | Serial clock input | Asynchronous master-generated clock synchronizing all I²C transactions; requires external pull-up resistor. |
| SDA | Serial data bidirectional I/O | Open-drain bus line shared among multiple devices; requires external pull-up resistor (2 kΩ typical for 400 kHz). |
| VCC | Power supply | Primary power rail; decoupling capacitor (0.1 μF ceramic) required within 10 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 |
|---|---|
| Schmitt-trigger inputs | Ensures reliable signal detection under high-noise conditions with 0.05×VCC hysteresis on SDA/SCL. |
| Output slope control | Prevents ground bounce during switching, eliminating false Start/Stop condition generation on shared buses. |
| 16-byte page write buffer | Reduces I²C protocol overhead by allowing burst writes - cuts bus occupancy time by up to 87% vs. byte-by-byte writes. |
| Hardware write-protection | Physically disables write commands when WP = VCC - prevents accidental firmware corruption during field updates. |
| ESD protection >4 kV | Withstands human-body-model ESD events without latch-up or parametric shift - suitable for handling in non-EPA environments. |
| Industrial temperature range | Guaranteed operation from –40°C to +85°C - validated for use in motor drives, HVAC controllers, and automotive body electronics. |
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 memory holding persistent calibration data accessible at power-on reset. Use Value: Eliminates need for external calibration hardware; retains accuracy across 200-year data retention window without battery backup. | Use Scenario: Saving user preferences (seat position, mirror angle, lighting profiles) and fault logs in 12V automotive BCMs. IC Role / Device Role / Timing Role: Low-voltage I²C slave storing infrequently written but mission-critical state data. Use Value: Operates reliably down to 2.5V during cold-crank conditions; WP pin prevents corruption during ignition transients. |
| Medical Device Configuration Backup | Smart Energy Meter Firmware Parameters |
Use Scenario: Retaining regulatory-compliant operational settings (alarm thresholds, sampling rates) in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure, tamper-resistant memory with hardware write-lock for audit-trail-critical parameters. Use Value: Meets IEC 62304 software lifecycle requirements via guaranteed 1M endurance and 200-year retention. | Use Scenario: Holding tariff tables, communication keys, and metering constants in ANSI C12.19-compliant smart meters. IC Role / Device Role / Timing Role: I²C-configurable nonvolatile storage interfaced to metrology SoC via isolated bus. Use Value: Supports 400 kHz I²C speed for rapid field updates; page-write capability minimizes update window during OTA firmware patches. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA16T/ST | Wider VCC range (1.7V–5.5V); lower 100 kHz max clock below 2.5V; same 16Kbit density and SOIC-8 package. | Preferred for battery-powered systems requiring sub-2.5V operation; not rated for 400 kHz at 2.5V. | Select when ultra-low-voltage operation is mandatory and clock speed ≤100 kHz suffices. |
| AT24C16C-SSHM-T | Same 16Kbit size, SOIC-8, and 400 kHz rating; different manufacturer (Microchip acquired Atmel); identical pinout and I²C protocol. | Drop-in replacement with identical timing and voltage specs; qualified to same industrial temp grade. | Valid alternative where legacy Atmel sourcing is preferred or dual-sourcing strategy applies. |
Compared with 24LC16BT/ST, the 24AA16T/ST extends voltage flexibility at the cost of speed below 2.5V, while the AT24C16C-SSHM-T offers identical electrical behavior and mechanical compatibility - making both viable for design continuity, though only the latter supports true pin-to-pin substitution without layout change.
Availability
24LC16BT/ST is available at Aetrix Electronics and suitable for industrial sensor calibration storage, automotive body control modules, medical device configuration backup, and smart energy meter firmware parameter retention requiring stable component supply across extended production lifecycles.
Supply support for 24LC16BT/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 microcontroller, mixed-signal, analog, and Flash-IP solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 24LC16B series belongs to Microchip's serial EEPROM product line, engineered specifically for reliable, low-power nonvolatile data storage in resource-constrained embedded systems requiring I²C interface simplicity and industrial-grade robustness.
FAQ
What is the maximum clock frequency supported by the 24LC16BT/ST?
The 24LC16BT/ST supports a maximum I²C clock frequency of 400 kHz when operated within its specified VCC range of 2.5V to 5.5V. This value is confirmed in the Device Selection Table and AC Characteristics section of the official Microchip datasheet DS20001703M. Frequencies above 400 kHz are not guaranteed and may result in communication failures or data corruption. The 24LC16BT/ST does not support the 1 MHz mode available in the 24FC16 variant.
Does the 24LC16BT/ST require external pull-up resistors on SDA and SCL lines?
Yes, the 24LC16BT/ST requires external pull-up resistors on both SDA and SCL lines because it uses open-drain outputs. The recommended value is 2 kΩ for 400 kHz operation at 5V, as specified in the datasheet's Serial Address/Data Input/Output (SDA) description. Pull-up values must be adjusted based on bus capacitance and speed requirements - failure to install them will prevent proper I²C communication. The 24LC16BT/ST itself does not integrate internal pull-ups.
How does hardware write-protection work on the 24LC16BT/ST?
Hardware write-protection on the 24LC16BT/ST is controlled by the WP (Write-Protect) pin. When WP is tied to VCC, all write operations - including byte writes, page writes, and address pointer modifications - are inhibited across the full 000h–7FFh memory space. Read operations remain fully functional. When WP is tied to VSS (or left floating, though not recommended), normal read/write access is enabled. This feature is implemented entirely in hardware and requires no software configuration.
What is the page write buffer size of the 24LC16BT/ST?
The 24LC16BT/ST has a 16-byte page write buffer, as explicitly stated in the Features section and verified in Section 6.2 (Page Write) of the datasheet. This allows up to 16 consecutive bytes to be loaded into the on-chip latch before initiating the internal write cycle. Attempting to write more than 16 bytes before issuing a Stop condition causes the address pointer to roll over within the same page, overwriting earlier data - so application firmware must enforce page boundary alignment.
Is the 24LC16BT/ST RoHS compliant and AEC-Q100 qualified?
Yes, the 24LC16BT/ST is RoHS compliant and AEC-Q100 qualified, as confirmed in the Features section of the datasheet. RoHS compliance ensures lead-free construction meeting EU Directive 2011/65/EU. AEC-Q100 qualification (Grade 2: –40°C to +105°C or Grade 3: –40°C to +125°C depending on specific variant) validates reliability for automotive applications - though the /ST suffix indicates SOIC packaging typically rated for Industrial (–40°C to +85°C) temperature range unless otherwise specified in ordering codes.
24LC16BT/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:
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
24LC16BT/ST FAQ
1.How can I place an order for 24LC16BT/ST through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC16BT/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/ST reliable?
The price and inventory of 24LC16BT/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/ST is usually 5 days.
3.What payment methods are accepted for 24LC16BT/ST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC16BT/ST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC16BT/ST?
24LC16BT/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC16BT/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/ST?
For technical support, including 24LC16BT/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC16BT/ST requirements.
6.How does Aetrix verify that 24LC16BT/ST is sourced from the original manufacturer or authorized distributors?
All 24LC16BT/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/ST meets industry standards.
7.What is the process for return or replacement of 24LC16BT/ST?
All 24LC16BT/ST units undergo pre-shipment inspection (PSI). If there is an issue with 24LC16BT/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/ST part is unused and in its original packaging.
Return procedure for 24LC16BT/ST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24LC16BT/ST Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
Microchip Technology
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AT24C02C-SSHM-T
Microchip Technology
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24LC01BT-I/OT
Microchip Technology
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M24C02-FMC6TG
STMicroelectronics
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
Microchip Technology
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AT24C04C-SSHM-T
Microchip Technology
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24LC01BT-I/SN
Microchip Technology
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24AA02UIDT-I/OT
Microchip Technology
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AT24C08C-STUM-T
Microchip Technology
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