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Microchip Technology 24LC08BT-I/SN
- Part No.:
- 24LC08BT-I/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
24LC08BT-I/SN.pdf
- Description:
- IC EEPROM 8KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:14,683
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Product details
Overview
24LC08BT-I/SN from Microchip Technology Inc. is an 8-Kbit I²C-compatible serial EEPROM organized as four 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-protection via the WP pin. It supports industrial temperature range (–40°C to +85°C) in an 8-lead SOIC (SN) package and is used for configuration storage in embedded controllers and power management systems.
For engineers reviewing the 24LC08BT-I/SN datasheet, 24LC08BT-I/SN pinout, 24LC08BT-I/SN application, or 24LC08BT-I/SN equivalent, key selection criteria include VCC min (2.5V), I²C speed grade (400 kHz), WP functionality, SOIC-8 thermal profile, and 16-byte page buffer size - all confirmed for this exact variant.
Technical Context
The 24LC08BT-I/SN implements a two-wire I²C interface with Schmitt-trigger inputs and slope-controlled outputs to suppress noise and eliminate ground bounce. Its internal architecture includes a 16-byte page latch, address pointer, and HV generator for EEPROM programming, enabling self-timed erase/write cycles without external timing components.
It uses a fixed 4-bit device code (1010) plus 2-bit block select (B1/B0) and R/W bit for addressing - supporting up to four independent 256-byte memory blocks. Write protection is implemented via a dedicated WP pin tied to VCC, disabling all writes while permitting reads across the full 000–3FF address space.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 × 8), organized as four 256-word blocks - enables segmented configuration storage with independent block addressing. |
| VCC Operating Range | 2.5V to 5.5V - requires minimum 2.5V supply; not functional below 2.5V (unlike 24AA08/24FC08 variants). |
| Max I²C Clock Frequency | 400 kHz - supports standard-mode I²C; no 1 MHz capability (reserved for 24FC08 only). |
| Page Write Buffer | 16 bytes - allows burst writes within a single physical page boundary (0–15, 16–31, etc.), improving firmware update efficiency. |
| Write Cycle Time | 5 ms maximum - defines worst-case latency before next command; ACK polling required to detect completion. |
| Endurance & Retention | 1 million erase/write cycles and >200 years data retention - validated at 25°C/5.5V; suitable for long-life industrial deployments. |
| Temperature Range | Industrial (–40°C to +85°C) - qualified per I-temp spec; not rated for extended (–40°C to +125°C) operation. |
Pinout & Package
24LC08BT-I/SN is housed in an 8-lead narrow SOIC (SN) package per JEDEC MS-012, 3.90 mm body width, with gull-wing leads and pin 1 indicator notch. Thermal resistance θJA = 160°C/W (typical on FR-4, 2-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSS | Ground reference | Return path for all internal logic and I/O; must be low-impedance connection to system GND plane. |
| WP | Hardware write-protect input | Active-high signal: tie to VCC to disable all writes; tie to VSS to enable full read/write access. |
| SCL | Serial clock input | Asynchronous master-generated clock; open-drain compatible with 10 kΩ pull-up (100 kHz) or 2 kΩ (400 kHz). |
| SDA | Serial data bidirectional I/O | Open-drain bus line requiring external pull-up; carries address, data, and ACK/NACK signals per I²C protocol. |
| VCC | Power supply | 2.5V–5.5V DC input; decoupling capacitor (0.1 µF ceramic) required within 5 mm of pin. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs on SDA/SCL | 5% VCC hysteresis (min) - rejects noise spikes ≤50 ns, enabling reliable operation in electrically noisy environments like motor drives. |
| Output slope control | Controlled rise/fall times - eliminates ground bounce during bus transitions, preventing false Start/Stop detection. |
| Page write buffer (16 bytes) | Reduces I²C transaction count by up to 16× vs. byte-write mode - cuts firmware update time and bus occupancy. |
| Hardware write-protect (WP pin) | Pin-level security - prevents accidental or malicious overwrites without software intervention or power cycle. |
| Low-power standby current | 1 µA max (I-temp) - enables always-on configuration storage in battery-backed or energy-harvesting systems. |
Applications
| Industrial PLC Configuration Storage | Smart Sensor Calibration Data |
|---|---|
|
Use Scenario: Storing I/O mapping, scaling factors, and alarm thresholds in programmable logic controllers deployed in factory automation cabinets. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding persistent settings between power cycles; accessed infrequently but critically during boot or reconfiguration. Use Value: WP pin ensures factory calibration data remains immutable during field firmware updates, eliminating risk of corruption via misaddressed writes. |
Use Scenario: Retaining sensor-specific offset/gain coefficients and linearization tables in MEMS pressure or temperature sensors. IC Role / Device Role / Timing Role: Dedicated calibration memory mapped to I²C slave address; read once per measurement cycle, written only during factory calibration. Use Value: 16-byte page buffer allows full coefficient set (e.g., 8× 16-bit values) to be written atomically, avoiding partial updates during calibration. |
| Power Supply Sequencing Parameters | Medical Device Safety Settings |
|
Use Scenario: Holding voltage ramp rates, delay timers, and fault response modes in multi-rail AC/DC and DC/DC power modules. IC Role / Device Role / Timing Role: System-critical parameter store accessed during power-up initialization; write-protected after commissioning. Use Value: Hardware WP eliminates need for software lock bits - prevents runtime corruption even if host MCU crashes mid-write. |
Use Scenario: Storing FDA-mandated safety limits (e.g., max output current, thermal cutoffs) in portable diagnostic equipment. IC Role / Device Role / Timing Role: Tamper-resistant configuration vault; contents verified at boot and locked until authorized service mode. Use Value: 1 million endurance cycles support lifetime recalibration; >200-year retention meets medical device regulatory shelf-life requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA08T-I/SN | Lower VCC min (1.7V), same 400 kHz speed, identical SOIC-8 package and pinout. | Supports battery-powered devices down to 1.7V; lacks AEC-Q100 qualification (24LC08B has it). | Select when ultra-low-voltage operation is required and automotive qualification is unnecessary. |
| 24LC08B-I/P | Same electrical specs and memory organization, but in 8-lead PDIP (P) package instead of SOIC-8 (SN). | Used in through-hole prototyping or legacy PCBs where SOIC footprint is unavailable. | Select only when PDIP mechanical fit is mandatory; otherwise prefer SN for surface-mount reliability and density. |
Compared with 24AA08T-I/SN, the 24LC08BT-I/SN trades 1.7V operation for AEC-Q100 qualification and tighter VCC min (2.5V), while the 24LC08B-I/P offers identical functionality in a through-hole package - making the SN variant optimal for modern SMT industrial designs requiring automotive-grade robustness.
Availability
24LC08BT-I/SN is available at Aetrix Electronics and suitable for industrial PLCs, smart sensors, and medical power supplies requiring stable component supply, long-term lifecycle support, and guaranteed traceability.
Supply support for 24LC08BT-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 24LC08B family is designed for cost-sensitive, space-constrained embedded systems requiring reliable nonvolatile storage with I²C simplicity, hardware write protection, and industrial temperature resilience.
FAQ
What is the minimum supply voltage required for 24LC08BT-I/SN operation?
The 24LC08BT-I/SN requires a minimum VCC of 2.5V - unlike the 24AA08 (1.7V min) or 24FC08 (1.7V min). Operation below 2.5V is not guaranteed and may result in failed writes or corrupted reads. This is explicitly defined in the Device Selection Table and Electrical Characteristics section of DS20001710M.
Does 24LC08BT-I/SN support 1 MHz I²C communication?
No, the 24LC08BT-I/SN supports up to 400 kHz I²C clock frequency only. The 1 MHz capability is exclusive to the 24FC08 variant. Attempting 1 MHz operation on 24LC08BT-I/SN will cause timing violations, ACK failures, and unreliable data transfer per AC Characteristics Table 1-1.
How does the WP pin function on 24LC08BT-I/SN?
On the 24LC08BT-I/SN, the WP pin is a hardware write-protect input: tying it to VCC disables all write operations (byte/page) across the full 000–3FF address space while permitting unrestricted reads; tying it to VSS enables normal read/write access. This behavior is confirmed in Section 2.4 and Figure 6-1 of DS20001710M.
What is the page size and boundary alignment requirement for page writes on 24LC08BT-I/SN?
The 24LC08BT-I/SN has a 16-byte page buffer, and physical page boundaries align to addresses divisible by 16 (e.g., 0x00–0x0F, 0x10–0x1F). Page writes crossing a boundary wrap around within the same page - so writing 16 bytes starting at 0x0F overwrites 0x0F–0x1E, not 0x0F–0x1E across pages. This is documented in Section 6.3 and Figure 6-2.
Is 24LC08BT-I/SN qualified for automotive applications?
Yes, the 24LC08B series - including 24LC08BT-I/SN - is AEC-Q100 qualified for automotive applications. This qualification covers stress testing for temperature cycling, humidity, and ESD, and is explicitly stated in the Features section of DS20001710M. The "I" suffix denotes Industrial temperature grade, which satisfies most automotive cabin and engine bay requirements.
24LC08BT-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:
- Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 8Kbit
- Memory Organization:
- 256 x 8 x 4
- 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
24LC08BT-I/SN FAQ
1.How can I place an order for 24LC08BT-I/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC08BT-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 24LC08BT-I/SN reliable?
The price and inventory of 24LC08BT-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 24LC08BT-I/SN is usually 5 days.
3.What payment methods are accepted for 24LC08BT-I/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC08BT-I/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC08BT-I/SN?
24LC08BT-I/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC08BT-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 24LC08BT-I/SN?
For technical support, including 24LC08BT-I/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC08BT-I/SN requirements.
6.How does Aetrix verify that 24LC08BT-I/SN is sourced from the original manufacturer or authorized distributors?
All 24LC08BT-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 24LC08BT-I/SN meets industry standards.
7.What is the process for return or replacement of 24LC08BT-I/SN?
All 24LC08BT-I/SN units undergo pre-shipment inspection (PSI). If there is an issue with 24LC08BT-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 24LC08BT-I/SN part is unused and in its original packaging.
Return procedure for 24LC08BT-I/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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