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Microchip Technology 24LC08BHT-E/SN
- Part No.:
- 24LC08BHT-E/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
24LC08BHT-E/SN.pdf
- Description:
- IC EEPROM 8KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,656
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Product details
Overview
24LC08BHT-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, 16-byte page write buffer, and hardware write-protect for memory addresses 200h–3FFh. It supports industrial and automotive temperature ranges and is used in firmware storage, calibration data retention, and configuration backup in embedded control systems.
For engineers reviewing the 24LC08BHT-E/SN datasheet, 24LC08BHT-E/SN pinout, 24LC08BHT-E/SN application, or 24LC08BHT-E/SN equivalent, key selection criteria include VCC min (2.5V), WP-enabled half-array protection, 16-byte page write capability, I²C timing compliance at 400 kHz, and automotive-grade (-40°C to +125°C) qualification.
Technical Context
The 24LC08BHT-E/SN implements a slave-only I²C interface with fixed 4-bit device code '1010', block-select addressing (B2–B0), and R/W bit control. Its internal address pointer auto-increments during sequential reads and page writes, while Schmitt-triggered SDA/SCL inputs and input filter spike suppression (50 ns) ensure robust operation on noisy buses.
Write protection is implemented via the WP pin: tied to VCC, it disables writes to the upper 2 Kbytes (200h–3FFh); tied to VSS, full-array access is enabled. The device uses self-timed erase/write cycles (5 ms max), supports acknowledge polling for bus efficiency, and includes VCC threshold detection (<1.5V disable) for power-fail safety.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (four 256 × 8-bit blocks), enabling compact nonvolatile storage for boot parameters and device IDs |
| VCC Operating Range | 2.5V to 5.5V - compatible with 3.3V and 5V logic domains without level shifting |
| I²C Clock Frequency | Up to 400 kHz (standard-mode fast-mode) - supports high-throughput configuration updates |
| Page Write Buffer | 16 bytes - reduces I²C transaction count for multi-byte writes, improving system latency |
| Write Endurance | 1 million erase/write cycles - suitable for frequent logging or dynamic parameter storage |
| Data Retention | 200 years at +25°C - ensures long-term reliability in unattended or maintenance-free deployments |
| Temperature Range | -40°C to +125°C (Automotive E-grade) - qualified for under-hood and industrial control environments |
Pinout & Package
24LC08BHT-E/SN is supplied in an 8-lead plastic SOIC (3.90 mm body) package with gull-wing leads, RoHS-compliant matte tin finish, and JEDEC MS-012AC standard footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Address Input | No internal connection - may be left floating or tied to VSS/VCC without effect |
| A1 | Address Input | No internal connection - unused per device architecture |
| A2 | Address Input | No internal connection - not decoded; irrelevant for 24LC08BH family |
| VSS | Ground Reference | Primary return path for all internal circuitry and I/O leakage currents |
| SDA | Serial Data I/O | Open-drain bidirectional bus line requiring external pull-up (2 kΩ typical for 400 kHz) |
| SCL | Serial Clock Input | Master-generated clock synchronizing all read/write transfers and ACK timing |
| WP | Write-Protect Control | Active-high enable for half-array lock (200h–3FFh); no effect on read operations |
| VCC | Power Supply | 2.5V–5.5V supply input powering EEPROM core, interface logic, and charge pumps |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt Trigger Inputs | 0.05 VCC hysteresis on SDA/SCL - rejects noise spikes up to 50 ns, eliminating external filtering components |
| Output Slope Control | Controlled SDA fall time (≤250 ns) - prevents ground bounce and signal integrity issues in dense PCB layouts |
| Hardware Write-Protect | Dedicated WP pin enabling selective lock of upper 2 Kbytes - eliminates software-based protection vulnerabilities |
| Page Write Capability | 16-byte buffer allows single I²C transaction to program up to 16 contiguous locations - cuts bus overhead by >80% vs. byte writes |
| ESD Protection | Exceeds 4,000 V HBM - meets IEC 61000-4-2 Level 3 for robustness in handling and assembly |
Applications
| Industrial PLC Configuration Storage | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Storing calibrated sensor offsets, I/O mapping tables, and firmware update flags in programmable logic controllers deployed in factory automation. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding persistent settings across power cycles; accessed via I²C during boot and runtime reconfiguration. Use Value: Enables field-upgradable logic behavior without hardware modification, leveraging 200-year data retention and 1M-cycle endurance. | Use Scenario: Retaining door lock state history, mirror position presets, and lighting profile preferences in automotive BCMs operating under wide thermal stress. IC Role / Device Role / Timing Role: Automotive-grade EEPROM providing secure, WP-protected storage for user-customizable settings accessible over vehicle CAN gateway I²C bridges. Use Value: Meets AEC-Q100 Grade 1 requirements via -40°C to +125°C operation and eliminates need for external voltage supervisors due to built-in VCC threshold detection. |
| Medical Infusion Pump Calibration | Smart Energy Meter Firmware Backup |
Use Scenario: Holding flow-rate calibration coefficients, dose history logs, and safety-critical alarm thresholds in battery-powered infusion pumps requiring regulatory traceability. IC Role / Device Role / Timing Role: Tamper-resistant data vault with WP-locked calibration region (200h–3FFh), accessed only during authorized service mode via authenticated I²C commands. Use Value: Supports FDA 21 CFR Part 11 compliance through hardware-enforced write protection and deterministic 5 ms write cycle timing. | Use Scenario: Backing up meter firmware checksums, tariff tables, and tamper-event timestamps in ANSI C12.20-certified smart electricity meters exposed to grid-level EMI. IC Role / Device Role / Timing Role: ESD-hardened (4 kV HBM), noise-immune I²C slave storing critical operational data with guaranteed retention over 20+ year field life. Use Value: Eliminates external RC filters and TVS diodes thanks to integrated Schmitt triggers and 50 ns spike suppression, reducing BOM cost and board area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24LC08B-I/SN | Same die, Industrial temp range (-40°C to +85°C) only; no automotive qualification | Not suitable for under-hood or extended-temperature industrial deployments | Select when cost sensitivity outweighs automotive qualification needs |
| AT24C08D-SSHM-T | 8 Kbit I²C EEPROM, 1.7V–5.5V VCC, 1 MHz clock support, different WP implementation (software-configurable) | Lacks hardware WP pin; requires firmware coordination for protected regions | Choose when higher speed or flexible protection schemes are prioritized over pin-level simplicity |
Compared with 24LC08BHT-E/SN, the 24LC08B-I/SN lacks automotive temperature validation but matches all electrical specs, while the AT24C08D-SSHM-T offers faster clocking and software-defined protection at the cost of added firmware complexity and no dedicated hardware WP pin.
Availability
24LC08BHT-E/SN is available at Aetrix Electronics and suitable for industrial PLC configuration storage, automotive body control modules, medical infusion pump calibration, and smart energy meter firmware backup requiring stable component supply across extended temperature and long lifecycle programs.
Supply support for 24LC08BHT-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 devices, and memory solutions, serving automotive, industrial, consumer, and communications markets with vertically integrated silicon and development tools.
The 24LC08BHT-E/SN belongs to Microchip's 24XX08H serial EEPROM product line, designed specifically for reliable, low-power, I²C-based nonvolatile data storage in space-constrained and thermally demanding embedded systems.
FAQ
What is the minimum VCC required for reliable operation of the 24LC08BHT-E/SN?
The 24LC08BHT-E/SN requires a minimum VCC of 2.5V for guaranteed operation across its full temperature range. Below 2.5V, functionality is not specified - unlike the 24AA08H variant which supports down to 1.7V. This 2.5V floor ensures stable internal charge pump performance and EEPROM write margin in automotive environments where supply transients occur.
How does the WP pin function on the 24LC08BHT-E/SN?
On the 24LC08BHT-E/SN, the WP pin is a dedicated hardware input: when tied to VCC, it permanently disables write access to memory addresses 200h–3FFh (upper 2 Kbytes); when tied to VSS, full-array write capability is restored. Reads remain fully functional regardless of WP state. This hardwired protection operates independently of I²C commands and persists through power cycles.
Can the 24LC08BHT-E/SN perform page writes across memory boundaries?
No - the 24LC08BHT-E/SN restricts page writes to within a single 16-byte physical page boundary. Attempting to write across a boundary (e.g., starting at address 0xFF) causes wraparound to the start of the same page, overwriting earlier bytes. Application firmware must validate write addresses against page alignment (base address modulo 16 = 0) before initiating multi-byte transfers.
What is the maximum I²C clock frequency supported by the 24LC08BHT-E/SN?
The 24LC08BHT-E/SN supports up to 400 kHz I²C clock frequency when VCC is ≥2.5V. At this rate, timing parameters including THIGH (≥600 ns), TLOW (≥1300 ns), and TSU:DAT (≥100 ns) remain within specification across the full -40°C to +125°C range. Operation above 400 kHz is not characterized or guaranteed.
Is the 24LC08BHT-E/SN pin-compatible with other 8-lead SOIC EEPROMs like the 24LC256?
No - the 24LC08BHT-E/SN is not pin-compatible with larger-density EEPROMs such as the 24LC256. While both use 8-lead SOIC packages, the 24LC256 requires A0–A2 pins for address expansion, whereas the 24LC08BHT-E/SN leaves A0–A2 unconnected. Swapping them would result in incorrect addressing and failed communication unless board layout and firmware are revised.
24LC08BHT-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:
- Not 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
24LC08BHT-E/SN FAQ
1.How can I place an order for 24LC08BHT-E/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC08BHT-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 24LC08BHT-E/SN reliable?
The price and inventory of 24LC08BHT-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 24LC08BHT-E/SN is usually 5 days.
3.What payment methods are accepted for 24LC08BHT-E/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC08BHT-E/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC08BHT-E/SN?
24LC08BHT-E/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC08BHT-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 24LC08BHT-E/SN?
For technical support, including 24LC08BHT-E/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC08BHT-E/SN requirements.
6.How does Aetrix verify that 24LC08BHT-E/SN is sourced from the original manufacturer or authorized distributors?
All 24LC08BHT-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 24LC08BHT-E/SN meets industry standards.
7.What is the process for return or replacement of 24LC08BHT-E/SN?
All 24LC08BHT-E/SN units undergo pre-shipment inspection (PSI). If there is an issue with 24LC08BHT-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 24LC08BHT-E/SN part is unused and in its original packaging.
Return procedure for 24LC08BHT-E/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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