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Microchip Technology 24LC08BHT-I/MS
- Part No.:
- 24LC08BHT-I/MS
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
24LC08BHT-I/MS.pdf
- Description:
- IC EEPROM 8KBIT I2C 400KHZ 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,524
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Product details
Overview
24LC08BHT-I/MS 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 industrial temperature range (–40°C to +85°C), 400 kHz max clock frequency, and hardware write-protect for memory addresses 200h–3FFh. It serves as nonvolatile configuration storage in embedded controllers, power management units, and sensor calibration modules.
For engineers reviewing the 24LC08BHT-I/MS datasheet, 24LC08BHT-I/MS pinout, 24LC08BHT-I/MS application, or 24LC08BHT-I/MS equivalent, key selection criteria include VCC minimum (2.5V), page write buffer size (16 bytes), WP-enabled half-array protection, and MSOP-8 package compatibility with space-constrained PCB layouts.
Technical Context
The 24LC08BHT-I/MS implements a slave-only I²C interface with fixed 7-bit device address prefix '1010', block-select addressing (B2–B0), and R/W bit control. Its internal address pointer auto-increments during sequential reads and page writes, supporting current-address, random, and sequential read modes without external address latching.
Write protection is implemented via dedicated WP pin logic: tied to VCC, it disables writes to upper 2 Kbytes (200h–3FFh); tied to VSS, full array access is enabled. Schmitt-trigger inputs on SDA/SCL and input filter spike suppression (50 ns) ensure robust operation on electrically noisy buses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 × 8), organized as four 256-word blocks - enables modular firmware parameter partitioning. |
| VCC Range | 2.5V to 5.5V - compatible with 3.3V and 5V systems; excludes sub-2.5V operation unlike 24AA08H variants. |
| Max Clock Frequency | 400 kHz (at VCC ≥ 2.5V) - supports fast configuration loading without requiring high-speed MCU peripherals. |
| Page Write Buffer | 16-byte - reduces I²C transaction count for multi-byte updates; requires software boundary checking to avoid wraparound. |
| Write Cycle Time | 5 ms max (byte or page) - defines minimum inter-write delay; self-timed, eliminating need for external polling timeout logic. |
| Data Retention | >200 years - ensures long-term reliability in unpowered storage of calibration data or security keys. |
| Endurance | 1 million erase/write cycles - supports frequent field-updatable parameters in industrial logging applications. |
Pinout & Package
24LC08BHT-I/MS is housed in an 8-pin MSOP (Micro Small Outline Package) with 0.65 mm pitch, 3.0 mm × 3.0 mm body, and exposed pad option (not electrically connected). The package is RoHS-compliant and rated for industrial temperature operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Address Input | No internal connection; may be left floating or tied to VSS/VCC - no effect on device addressing. |
| A1 | Address Input | No internal connection; functionally unused per datasheet - eliminates need for pull-up/down resistors. |
| A2 | Address Input | No internal connection; not bonded - simplifies PCB layout by allowing direct trace termination. |
| VSS | Ground | Reference node for all I/O and internal logic; must be low-impedance path to system ground plane. |
| SDA | Serial Data I/O | Open-drain bidirectional bus line; requires external pull-up resistor (2 kΩ typical for 400 kHz). |
| SCL | Serial Clock Input | Master-generated clock; Schmitt-trigger input ensures noise immunity and precise edge detection. |
| WP | Write-Protect Control | Active-high enable for half-array protection; tied to VCC locks 200h–3FFh; tied to VSS enables full write access. |
| VCC | Power Supply | 2.5V–5.5V input; internal voltage detector disables writes below ~1.5V to prevent corrupted data. |
Key Features
| Feature | Design Value |
|---|---|
| I²C Bus Compatibility | Fully compliant with standard-mode (100 kHz) and fast-mode (400 kHz) I²C specifications - interoperable with legacy and modern microcontrollers without protocol translation. |
| Hardware Write Protection | Dedicated WP pin enables selective locking of upper 2 Kbytes (200h–3FFh) - prevents accidental overwrite of critical calibration or security data while allowing runtime updates to lower memory. |
| Noise Immunity | Schmitt-trigger inputs + 50 ns input filter on SDA/SCL - suppresses EMI-induced glitches in motor drives, power supplies, and industrial environments. |
| Low-Power Operation | Standby current ≤ 1 µA (industrial), active read current ≤ 1 mA - extends battery life in portable instrumentation and wireless sensor nodes. |
| Page Write Efficiency | 16-byte buffer allows single I²C transaction to update up to 16 bytes - cuts bus overhead by ~94% vs. byte-wise writes for typical configuration blocks. |
Applications
| Industrial Sensor Calibration | Embedded Power Management |
|---|---|
|
Use Scenario: Storing factory-trimmed offset/gain coefficients and temperature compensation tables for analog sensor front-ends. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed at power-up and during field recalibration routines. Use Value: Enables plug-and-play sensor replacement with guaranteed accuracy; WP pin protects calibrated values from firmware update errors. |
Use Scenario: Holding dynamic power state settings (voltage rails, sequencing delays, fault thresholds) in DC-DC controller modules. IC Role / Device Role / Timing Role: Persistent parameter store updated during runtime via I²C by host PMIC or MCU. Use Value: Survives power cycling and brownouts; 1M endurance supports thousands of reconfiguration events over product lifetime. |
| Medical Device Configuration | Automotive Body Control Module |
|
Use Scenario: Saving user preferences (alarm thresholds, display brightness, language) and usage logs in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure, low-power data logger and settings repository interfaced to ARM Cortex-M host. Use Value: >200-year data retention ensures compliance with medical device archival requirements; 2.5V min VCC supports single-cell Li-ion backup. |
Use Scenario: Storing door lock actuator calibration, mirror position presets, and lighting profiles in automotive BCMs. IC Role / Device Role / Timing Role: Robust configuration memory accessible across vehicle battery voltage transients (9–16V). Use Value: Industrial temp rating (–40°C to +85°C) and ESD protection (>4 kV) meet automotive subsystem environmental demands. |
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/MS | No tape-and-reel suffix; identical electrical specs and MSOP-8 package - differs only in packaging format (bulk vs. reel). | Same functional use; preferred for low-volume prototyping or manual assembly where reel feeding is unnecessary. | Select 24LC08B-I/MS when tape-and-reel is not required for SMT line integration. |
| AT24C08D-MAHM-T | 8 Kbit I²C EEPROM from Microchip (acquired Atmel); 1.7–5.5V VCC, 1 MHz max clock, 32-byte page buffer - wider voltage range and faster timing. | Better suited for battery-powered designs needing sub-2.5V operation or higher throughput; lacks half-array WP (only full-array or software-lock options). | Choose AT24C08D-MAHM-T when VCC may dip below 2.5V or when larger page buffer improves system efficiency. |
Compared with 24LC08BHT-I/MS, 24LC08B-I/MS offers identical functionality in bulk packaging, while AT24C08D-MAHM-T provides broader VCC support and faster clocking but omits hardware-based half-array write protection - making 24LC08BHT-I/MS optimal for cost-sensitive industrial systems requiring selective memory locking.
Availability
24LC08BHT-I/MS is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded power management, and medical device configuration requiring stable component supply, long-term data retention, and RoHS-compliant packaging.
Supply support for 24LC08BHT-I/MS 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, serving industrial, automotive, consumer, and communications markets with high-reliability semiconductor products.
The 24LC08BHT-I/MS belongs to Microchip's serial EEPROM product line, designed specifically for low-power, I²C-based nonvolatile storage in space-constrained embedded systems requiring guaranteed data integrity and long service life.
FAQ
What is the minimum supply voltage required for reliable operation of the 24LC08BHT-I/MS?
The 24LC08BHT-I/MS requires a minimum VCC of 2.5V for guaranteed operation across its full industrial temperature range (–40°C to +85°C). Unlike the 24AA08H variant, it is not specified for operation below 2.5V - attempting sub-2.5V operation may result in incomplete writes or data corruption due to internal voltage detector activation.
How does the WP pin function on the 24LC08BHT-I/MS, and what memory region does it protect?
The WP pin on the 24LC08BHT-I/MS is an active-high hardware write-protect input. When tied to VCC, it disables write operations to memory addresses 200h–3FFh (upper 2 Kbytes), while allowing full read access and unrestricted writes to addresses 000h–1FFh. This enables secure storage of calibration constants or firmware flags independent of runtime-modifiable parameters.
Can the 24LC08BHT-I/MS perform page writes across memory boundaries, and what happens if it does?
No - page writes on the 24LC08BHT-I/MS are constrained to a single 16-byte physical page. If a page write command crosses a 16-byte boundary (e.g., starting at address 00Fh), data wraps around to the beginning of the same page (address 000h), overwriting previously loaded bytes. Application firmware must enforce page alignment to prevent unintended data loss.
What is the maximum I²C clock frequency supported by the 24LC08BHT-I/MS, and under what conditions?
The 24LC08BHT-I/MS supports a maximum I²C clock frequency of 400 kHz when VCC is 2.5V or higher. At VCC < 2.5V, the device is not characterized for reliable operation; therefore, 400 kHz is valid only within its specified 2.5V–5.5V supply range - ensuring compatibility with standard fast-mode I²C controllers without timing margin concerns.
Is the 24LC08BHT-I/MS pin-compatible with other 8-pin serial EEPROMs in MSOP packages, such as the 24AA08HT-I/MS?
Yes - the 24LC08BHT-I/MS shares identical MSOP-8 pinout, footprint, and terminal functions with the 24AA08HT-I/MS. However, they differ in VCC minimum (2.5V vs. 1.7V) and default write-protection behavior; substituting one for the other requires verification of system supply voltage and WP pin handling to avoid functional mismatch.
24LC08BHT-I/MS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
24LC08BHT-I/MS FAQ
1.How can I place an order for 24LC08BHT-I/MS through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC08BHT-I/MS 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-I/MS reliable?
The price and inventory of 24LC08BHT-I/MS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC08BHT-I/MS is usually 5 days.
3.What payment methods are accepted for 24LC08BHT-I/MS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC08BHT-I/MS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC08BHT-I/MS?
24LC08BHT-I/MS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC08BHT-I/MS 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-I/MS?
For technical support, including 24LC08BHT-I/MS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC08BHT-I/MS requirements.
6.How does Aetrix verify that 24LC08BHT-I/MS is sourced from the original manufacturer or authorized distributors?
All 24LC08BHT-I/MS 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-I/MS meets industry standards.
7.What is the process for return or replacement of 24LC08BHT-I/MS?
All 24LC08BHT-I/MS units undergo pre-shipment inspection (PSI). If there is an issue with 24LC08BHT-I/MS, 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-I/MS part is unused and in its original packaging.
Return procedure for 24LC08BHT-I/MS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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