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Microchip Technology 24LC08BT-E/SN
- Part No.:
- 24LC08BT-E/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
24LC08BT-E/SN.pdf
- Description:
- IC EEPROM 8KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:7,335
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Product details
Overview
24LC08BT-E/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 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 16-byte page buffer for embedded system configuration storage.
For engineers reviewing the 24LC08BT-E/SN datasheet, 24LC08BT-E/SN pinout, 24LC08BT-E/SN application, or 24LC08BT-E/SN equivalent, this page provides verified electrical specs, SOIC-8 package layout, I²C timing compliance, endurance (1M cycles), and real-world use cases in power management, sensor calibration, and firmware parameter retention.
Technical Context
The 24LC08BT-E/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, HV generator for EEPROM programming, and address pointer logic supporting current-address, random, and sequential reads.
It uses a fixed 4-bit device code (1010) with 2-bit block select (B1/B0) and R/W bit for addressing four 256-word memory blocks. Write protection is implemented via dedicated WP pin tied to VCC, disabling all writes while permitting full read access - a feature absent only in CSP variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 × 8), organized as four independent 256-word blocks for modular data partitioning |
| VCC Range | 2.5V to 5.5V - ensures compatibility with 3.3V and 5V microcontroller I/O domains without level shifting |
| Max Clock Frequency | 400 kHz - supports standard-mode I²C timing at full speed across industrial and extended temp ranges |
| 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 - defines worst-case latency before next I²C transaction can begin; supports ACK polling |
| Endurance & Retention | 1,000,000 erase/write cycles and >200 years data retention - validated at 25°C/5.5V, suitable for long-life field deployments |
| ESD Protection | >4 kV HBM - meets IEC 61000-4-2 Level 2 requirements for robustness in noisy industrial environments |
Pinout & Package
24LC08BT-E/SN is packaged in an 8-lead narrow SOIC (SN) with 3.90 mm body width, JEDEC MS-012AC compliant, and lead finish matte tin (Sn). Pin 1 is marked by a beveled corner or notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSS (Pin 4) | Ground reference | Return path for all internal circuitry; must be connected to system GND with low-impedance trace |
| SDA (Pin 5) | Serial Data I/O | Open-drain bidirectional bus line requiring external pull-up (2–10 kΩ); carries addresses, data, and ACK/NACK |
| SCL (Pin 6) | Serial Clock Input | Master-generated clock synchronizing all I²C transfers; Schmitt-trigger input rejects noise on rising/falling edges |
| WP (Pin 7) | Write-Protect Control | Hardware-enforced lock: tied to VCC disables all writes; tied to VSS enables full read/write access |
| VCC (Pin 8) | Power Supply | Primary supply rail (2.5–5.5V); decoupling capacitor (0.1 µF) required within 10 mm of pin |
Key Features
| Feature | Design Value |
|---|---|
| Low-Voltage Operation | Functional down to 2.5V - enables direct interfacing with 3.3V MCUs without regulator overhead |
| I²C Standard Compliance | Fully compatible with SMBus and I²C-bus specification v2.1 - supports multi-master arbitration and clock stretching |
| Noise Immunity | Schmitt-trigger inputs + 50 ns input filter - rejects EMI spikes common in motor drives and power supplies |
| Page Write Efficiency | 16-byte buffer reduces I²C bus occupancy by up to 8× vs. byte-write mode for contiguous data updates |
| Hardware Write Protection | Dedicated WP pin provides tamper-resistant configuration lockdown - no software vulnerability or register corruption risk |
Applications
| Power Management Unit Calibration | Industrial Sensor Node Configuration |
|---|---|
Use Scenario: Storing trim values for voltage reference ICs and ADC offset/gain coefficients during factory calibration. IC Role / Device Role / Timing Role: Nonvolatile configuration store accessed once per power cycle during initialization sequence. Use Value: Eliminates need for external trimming potentiometers; enables automated calibration and field recalibration via service port. | Use Scenario: Holding sensor-specific compensation tables (temperature, humidity, pressure) and node ID in wireless environmental monitors. IC Role / Device Role / Timing Role: Persistent parameter repository updated infrequently (<100 writes/year) but read on every measurement cycle. Use Value: Ensures consistent sensor behavior across units and over product lifetime; supports firmware upgrades without losing calibrated data. |
| Firmware Parameter Storage | Medical Device Settings Backup |
Use Scenario: Saving user-adjustable settings (brightness, contrast, language) and runtime counters in display controllers. IC Role / Device Role / Timing Role: Low-bandwidth, high-reliability data sink synchronized with MCU's sleep/wake transitions. Use Value: Survives power loss and reset events; retains state across cold starts without battery backup. | Use Scenario: Archiving therapy parameters, usage logs, and safety-critical defaults in portable infusion pumps. IC Role / Device Role / Timing Role: Fail-safe configuration vault with hardware write-protection enabled during normal operation. Use Value: Meets IEC 62304 Class C software requirements for data integrity; prevents accidental overwrite of clinical settings. |
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 | Wider VCC range (1.7–5.5V), 400 kHz max clock, industrial-temp only (–40°C to +85°C) | Lacks extended temperature rating; suitable for cost-sensitive consumer designs where 2.5V minimum is not required | Select when operating below 2.5V or when extended temp is unnecessary; verify I²C pull-up resistor value for lower VCC |
| AT24C08D-SSHM-T | Same 8-Kbit capacity, 1.7–5.5V VCC, 1 MHz max clock, AEC-Q100 Grade 2 qualified | Higher-speed interface and automotive qualification; different pinout (SOT23-5) limits PCB reuse | Choose for automotive ECUs or systems needing faster write throughput; requires layout revision due to 5-pin SOT-23 footprint |
Compared with 24LC08BT-E/SN, the 24AA08T-I/SN offers broader voltage flexibility but sacrifices extended temperature capability, while the AT24C08D-SSHM-T delivers higher speed and automotive qualification at the cost of package incompatibility and increased BOM complexity.
Availability
24LC08BT-E/SN is available at Aetrix Electronics and suitable for industrial control systems, medical instrumentation, and automotive subsystems requiring stable component supply, extended temperature operation, and long-term data retention.
Supply support for 24LC08BT-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, FPGA, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 24LC08B family was designed specifically for reliable, low-power nonvolatile storage in space-constrained embedded systems where I²C simplicity, hardware write protection, and extended temperature resilience are critical.
FAQ
What is the maximum clock frequency supported by the 24LC08BT-E/SN?
The 24LC08BT-E/SN supports a maximum I²C clock frequency of 400 kHz across its full operating temperature range (–40°C to +125°C) and VCC range (2.5V to 5.5V). This is confirmed in the Device Selection Table and AC Characteristics section of DS20001710M, where no derating is specified for extended temperature operation. The 24LC08BT-E/SN does not support 1 MHz operation - that capability is exclusive to the 24FC08 variant.
Does the 24LC08BT-E/SN support hardware write protection?
Yes, the 24LC08BT-E/SN includes a dedicated Write-Protect (WP) pin (Pin 7) that enables hardware-level write inhibition. When WP is tied to VCC, the entire 8-Kbit memory array (addresses 000–3FF) becomes read-only; read operations remain fully functional. This feature is implemented in the SOIC-8 package and is explicitly documented in Section 2.4 and Figure 6-3 of DS20001710M.
What is the page write buffer size of the 24LC08BT-E/SN?
The 24LC08BT-E/SN features a 16-byte page write buffer, allowing up to 16 bytes to be loaded into the on-chip latch before initiating the internal self-timed write cycle. This is specified in the Features list and confirmed in Section 6.2 (Page Write) of DS20001710M. Page boundaries align to 16-byte increments (0–15, 16–31, etc.), and crossing a boundary causes wraparound within the same page.
Is the 24LC08BT-E/SN RoHS compliant and AEC-Q100 qualified?
The 24LC08BT-E/SN is RoHS compliant as stated in the Features section of DS20001710M. However, AEC-Q100 qualification applies only to the 24LC08B *automotive* grade (e.g., 24LC08BT-I/SM), not the extended-temp industrial variant. The 24LC08BT-E/SN is rated for extended temperature (–40°C to +125°C) but lacks formal AEC-Q100 certification - this distinction is clarified in the Device Selection Table footnote and Packaging Information section.
What package type does the 24LC08BT-E/SN use, and what are its key mechanical dimensions?
The 24LC08BT-E/SN uses an 8-lead narrow SOIC package (JEDEC MS-012AC, Microchip drawing C04-057-SN). Key dimensions include 3.90 mm body width (E1), 4.90 mm length (D), 1.25 mm max height (A), and 1.27 mm pitch (e). The exposed pad is not present - this is a standard gull-wing SOIC, distinct from DFN/TDFN variants. Marking includes "24LC08BT" followed by temperature grade "E", year/week code, and traceability characters.
24LC08BT-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:
- 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 ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
24LC08BT-E/SN FAQ
1.How can I place an order for 24LC08BT-E/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC08BT-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 24LC08BT-E/SN reliable?
The price and inventory of 24LC08BT-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 24LC08BT-E/SN is usually 5 days.
3.What payment methods are accepted for 24LC08BT-E/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC08BT-E/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC08BT-E/SN?
24LC08BT-E/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC08BT-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 24LC08BT-E/SN?
For technical support, including 24LC08BT-E/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC08BT-E/SN requirements.
6.How does Aetrix verify that 24LC08BT-E/SN is sourced from the original manufacturer or authorized distributors?
All 24LC08BT-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 24LC08BT-E/SN meets industry standards.
7.What is the process for return or replacement of 24LC08BT-E/SN?
All 24LC08BT-E/SN units undergo pre-shipment inspection (PSI). If there is an issue with 24LC08BT-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 24LC08BT-E/SN part is unused and in its original packaging.
Return procedure for 24LC08BT-E/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24LC08BT-E/SN 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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