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Microchip Technology 24LC08B-E/SN16KVAO
- Part No.:
- 24LC08B-E/SN16KVAO
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
24LC08B-E/SN16KVAO.pdf
- Description:
- IC EEPROM 8KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,878
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Product details
Overview
24LC08B-E/SN16KVAO 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 configuration storage in microcontroller systems.
For engineers reviewing the 24LC08B-E/SN16KVAO datasheet, 24LC08B-E/SN16KVAO pinout, 24LC08B-E/SN16KVAO application, or 24LC08B-E/SN16KVAO equivalent, this page provides verified electrical specs, SOIC-8 pin mapping, I²C timing compliance, endurance (1M cycles), and real-world use cases in automotive and industrial control systems where nonvolatile parameter retention is critical.
Technical Context
The 24LC08B-E/SN16KVAO 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 - all synchronized by host-generated SCL.
It supports byte and page writes with self-timed erase/write cycles, ACK polling for bus efficiency, and hardware write-protection via the WP pin. The device uses fixed 4-bit control code '1010' with 2-bit block select (B1/B0) to access four 256-word memory blocks, enabling deterministic addressing without external address pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.5V–5.5V: Ensures compatibility with 3.3V and 5V logic systems; excludes sub-2.5V operation unlike 24AA08/24FC08 variants. |
| Max Clock Frequency | 400 kHz at VCC ≥ 2.5V: Enables faster data transfer than 100 kHz legacy I²C, suitable for real-time calibration updates. |
| Memory Organization | 4 × 256 × 8-bit blocks (8 Kbit total): Allows independent block-level access via B1/B0 bits in control byte for modular firmware configuration. |
| Page Write Buffer | 16 bytes: Reduces I²C transaction count when storing multi-byte parameters (e.g., sensor calibration tables), improving system throughput. |
| Endurance & Retention | 1,000,000 erase/write cycles and >200 years data retention: Supports long-life deployment in unattended industrial equipment and automotive ECUs. |
| Temperature Range | –40°C to +125°C (Extended grade): Validated for under-hood automotive and high-temperature industrial environments. |
| Write Protection | Hardware-enabled via WP pin tied to VCC: Prevents accidental overwrites of critical firmware parameters during power-up or reset sequences. |
Pinout & Package
24LC08B-E/SN16KVAO is packaged in an 8-lead narrow SOIC (SN) with standard 1.27 mm pitch, 3.90 mm body width, and JEDEC-compliant footprint. Pin 1 is marked with a beveled corner or notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A0) | No-connect | Internally unconnected; may be left floating or tied to VSS/VCC without functional impact. |
| 2 (A1) | No-connect | Internally unconnected; no effect on addressing or operation. |
| 3 (A2) | No-connect | Internally unconnected; eliminates need for external address strapping in multi-device I²C buses. |
| 4 (VSS) | Ground reference | Provides return path for all internal circuits; must be low-impedance to ensure stable I²C signaling and EEPROM reliability. |
| 5 (SDA) | Serial data I/O | Bidirectional open-drain line requiring external pull-up (2–10 kΩ); carries addresses, data, and ACK/NACK signals per I²C protocol. |
| 6 (SCL) | Serial clock input | Host-generated clock synchronizing all transfers; Schmitt-trigger input ensures noise immunity on shared bus lines. |
| 7 (WP) | Write-protect control | Active-high enable: tying to VCC locks entire memory array (000h–3FFh) against writes while permitting reads. |
| 8 (VCC) | Power supply | Supplies core logic and EEPROM programming voltage; decoupling capacitor (0.1 µF) required near pin for transient stability. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs on SDA/SCL | 5% VCC hysteresis (min) rejects EMI and bus noise, enabling reliable operation in electrically noisy automotive and factory-floor environments. |
| Output slope control | Controlled rise/fall times prevent ground bounce during fast switching, eliminating signal integrity issues on shared PCB power planes. |
| 16-byte page write buffer | Reduces required I²C transactions by up to 16× versus byte-write mode, lowering host CPU overhead and bus contention in multi-sensor systems. |
| Hardware write-protection (WP) | Physically disables all write operations when WP = VCC, providing fail-safe protection for boot configuration or calibration data without software intervention. |
| 1 million endurance cycles | Supports daily reconfiguration over 27 years (1 cycle/day), making it suitable for field-upgradable industrial controllers and adaptive automotive modules. |
| AEC-Q100 qualified | Validated for automotive applications including engine control, body electronics, and ADAS subsystems requiring extended temperature and reliability compliance. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Configuration Storage |
|---|---|
Use Scenario: Storing fuel map coefficients, sensor calibration offsets, and fault history logs in engine management systems subject to thermal cycling and vibration. IC Role / Device Role / Timing Role: Nonvolatile parameter store accessed via I²C during startup and runtime; WP pin hardwired to VCC after initial programming to prevent corruption. Use Value: Guarantees >200-year data retention and 1M-cycle endurance across –40°C to +125°C, meeting AEC-Q100 Grade 1 requirements for under-hood deployment. |
Use Scenario: Holding user-defined I/O mapping, PID tuning parameters, and firmware update flags in programmable logic controllers deployed in manufacturing lines. IC Role / Device Role / Timing Role: Configuration EEPROM interfaced to ARM Cortex-M host MCU; 16-byte page writes minimize bus occupancy during parameter batch updates. Use Value: 400 kHz I²C speed enables sub-10ms full-parameter reload; hardware WP prevents accidental overwrite during brown-out recovery sequences. |
| Smart Energy Meter Calibration | Medical Infusion Pump Settings |
Use Scenario: Retaining meter-specific calibration constants (voltage/current gain, phase compensation) across power cycles and firmware upgrades in ANSI C12.20-compliant meters. IC Role / Device Role / Timing Role: Secure configuration vault accessed only during factory calibration or authorized service; WP pin used as physical write-lock after commissioning. Use Value: ESD protection >4 kV and 1 µA standby current extend battery life in portable metrology tools; RoHS compliance meets global regulatory mandates. |
Use Scenario: Storing drug library profiles, dose limits, and alarm thresholds in Class II medical infusion pumps requiring traceable, tamper-resistant parameter storage. IC Role / Device Role / Timing Role: Safety-critical nonvolatile memory isolated from main processor; accessed via dedicated I²C bus with ACK polling to confirm write completion before dose delivery. Use Value: 1M endurance cycles support 10+ years of clinical use; extended temperature range validates operation during autoclave sterilization cycles (up to +125°C ambient). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA08-I/SN | Wider VCC range (1.7–5.5V); lower 100 kHz max clock below 2.5V; same 8-Kbit organization and SOIC-8 package. | Preferred for battery-powered devices operating down to 1.7V; not rated for +125°C operation. | Select when ultra-low-voltage operation is required and extended temperature is unnecessary. |
| 24FC08-E/SN | 1 MHz I²C clock support; 1.7–5.5V VCC; identical pinout and memory map; lacks WP pin in CSP variant (not applicable here). | Better suited for high-throughput data logging where 400 kHz is insufficient; same AEC-Q100 qualification. | Choose when system-level I²C bus speed exceeds 400 kHz and full 1 MHz capability is needed. |
Compared with 24AA08-I/SN and 24FC08-E/SN, the 24LC08B-E/SN16KVAO trades voltage flexibility and top-end speed for guaranteed 400 kHz performance across its full 2.5–5.5V range and robust extended-temperature operation - making it optimal for automotive and industrial designs where voltage rails are stable and thermal margins are tight.
Availability
24LC08B-E/SN16KVAO is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLCs, smart energy meters, and medical infusion pumps requiring stable component supply with guaranteed long-term availability and AEC-Q100 compliance.
Supply support for 24LC08B-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, serving automotive, industrial, consumer, and communications markets with vertically integrated silicon and software platforms.
The 24LC08B belongs to Microchip's serial EEPROM product line designed for reliable, low-power nonvolatile data storage in space-constrained embedded systems where I²C interface simplicity, write-protection, and extended temperature operation are essential.
FAQ
What is the maximum I²C clock frequency supported by 24LC08B-E/SN16KVAO?
The 24LC08B-E/SN16KVAO supports a maximum I²C clock frequency of 400 kHz when VCC is between 2.5V and 5.5V. This is confirmed in the Device Selection Table and AC Characteristics section of DS20001710M. Unlike the 24AA08 (100 kHz below 2.5V) or 24FC08 (1 MHz), the 24LC08B-E/SN16KVAO does not operate below 2.5V and maintains consistent 400 kHz timing across its full rated voltage range.
Does 24LC08B-E/SN16KVAO require external pull-up resistors on SDA and SCL lines?
Yes, 24LC08B-E/SN16KVAO requires external pull-up resistors on both SDA and SCL lines because its I/O pins are open-drain. The datasheet specifies typical values of 2 kΩ for 400 kHz operation and 10 kΩ for 100 kHz. These resistors ensure proper logic high levels and meet rise time requirements (TR ≤ 300 ns at VCC ≥ 2.5V), which are critical for reliable I²C communication in the 24LC08B-E/SN16KVAO.
How is memory addressed in 24LC08B-E/SN16KVAO?
24LC08B-E/SN16KVAO uses a 4-bit control code (1010) followed by two block-select bits (B1, B0) and a R/W bit to form the 7-bit client address. The 8-bit word address then selects one of 256 locations within the selected 256-word block. With four blocks, the full 8-Kbit array is addressed as 000h–3FFh. Pins A0–A2 are not connected and have no effect on addressing in the 24LC08B-E/SN16KVAO.
What is the function of the WP pin on 24LC08B-E/SN16KVAO?
The WP (Write-Protect) pin on 24LC08B-E/SN16KVAO enables hardware-level write inhibition: when tied to VCC, the entire memory array (000h–3FFh) becomes read-only while read operations remain fully functional. When tied to VSS or left floating, normal read/write operation is enabled. This feature is implemented in all packages except CSP, and applies directly to the 24LC08B-E/SN16KVAO in SOIC-8.
Is 24LC08B-E/SN16KVAO qualified for automotive applications?
Yes, 24LC08B-E/SN16KVAO is explicitly AEC-Q100 qualified and rated for Extended temperature range (–40°C to +125°C), as stated in the Features and Device Selection Table sections of DS20001710M. This qualification covers stress testing for temperature cycling, humidity, and ESD, confirming suitability for under-hood automotive modules such as ECUs, body controllers, and ADAS sensors using the 24LC08B-E/SN16KVAO.
24LC08B-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:
- 8Kbit
- Memory Organization:
- 1K 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
24LC08B-E/SN16KVAO FAQ
1.How can I place an order for 24LC08B-E/SN16KVAO through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC08B-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 24LC08B-E/SN16KVAO reliable?
The price and inventory of 24LC08B-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 24LC08B-E/SN16KVAO is usually 5 days.
3.What payment methods are accepted for 24LC08B-E/SN16KVAO?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC08B-E/SN16KVAO transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC08B-E/SN16KVAO?
24LC08B-E/SN16KVAO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC08B-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 24LC08B-E/SN16KVAO?
For technical support, including 24LC08B-E/SN16KVAO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC08B-E/SN16KVAO requirements.
6.How does Aetrix verify that 24LC08B-E/SN16KVAO is sourced from the original manufacturer or authorized distributors?
All 24LC08B-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 24LC08B-E/SN16KVAO meets industry standards.
7.What is the process for return or replacement of 24LC08B-E/SN16KVAO?
All 24LC08B-E/SN16KVAO units undergo pre-shipment inspection (PSI). If there is an issue with 24LC08B-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 24LC08B-E/SN16KVAO part is unused and in its original packaging.
Return procedure for 24LC08B-E/SN16KVAO:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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