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Microchip Technology 24LC08BHT-I/SN
- Part No.:
- 24LC08BHT-I/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
24LC08BHT-I/SN.pdf
- Description:
- IC EEPROM 8KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,951
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Product details
Overview
24LC08BHT-I/SN from Microchip Technology Inc. is an 8 Kbit I²C-compatible serial EEPROM organized as four 256 × 8-bit memory blocks, operating from 2.5V to 5.5V with 400 kHz max clock frequency, 16-byte page write buffer, and hardware write-protect for addresses 200h–3FFh. It supports industrial temperature range (−40°C to +85°C) in an 8-lead SOIC package and is used for configuration storage in embedded controllers and sensor modules.
For engineers reviewing the 24LC08BHT-I/SN datasheet, 24LC08BHT-I/SN pinout, 24LC08BHT-I/SN application, or 24LC08BHT-I/SN equivalent, key selection criteria include VCC min (2.5V), page write time (3 ms typ), endurance (1 million cycles), data retention (>200 years), and WP-enabled half-array protection - all critical for reliable nonvolatile storage in power-constrained or noise-prone systems.
Technical Context
The 24LC08BHT-I/SN implements a 2-wire I²C slave interface with Schmitt-trigger inputs and slope-controlled outputs to suppress ground bounce and bus noise. Its internal address pointer supports current-address, random, and sequential read modes, while acknowledge polling enables precise timing of write completion without fixed delays.
Memory is partitioned into four 256-word blocks; block-select bits (B1, B0) in the control byte determine active block, and the WP pin disables writes to the upper 2 Kbytes (200h–3FFh) when pulled high. No internal connection exists for A0–A2 pins - they are NC and may be left floating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 8 Kbit (four 256 × 8-bit blocks), enabling compact firmware parameter or calibration data storage |
| VCC range | 2.5V to 5.5V - requires no level-shifting when interfacing with 3.3V or 5V microcontrollers |
| Max clock frequency | 400 kHz (100 kHz below 2.5V) - supports fast configuration loading without demanding MCU timing margins |
| Page write buffer | 16 bytes - reduces I²C transaction count for multi-byte updates, improving bus efficiency |
| Write endurance | 1 million erase/write cycles - suitable for applications requiring frequent field-updatable settings |
| Data retention | >200 years at +85°C - ensures long-term reliability in unattended or maintenance-free deployments |
| ESD protection | >4 kV HBM - provides robustness against handling and board-level electrostatic discharge events |
Pinout & Package
24LC08BHT-I/SN is housed in an 8-lead plastic SOIC (3.90 mm body) package per JEDEC MS-012, RoHS-compliant, with gull-wing leads and standard 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | No-connect (NC) | Internally unconnected; may be left floating or tied to VSS/VCC without functional impact |
| A1 | No-connect (NC) | Internally unconnected; no effect on addressing or operation |
| A2 | No-connect (NC) | Internally unconnected; eliminates need for external pull-up/down resistors |
| VSS | Ground reference | Common return path for all internal circuitry and I²C bus termination |
| SDA | Serial data I/O | Open-drain bidirectional line requiring external pull-up; carries address, command, and data |
| SCL | Serial clock input | Master-generated clock synchronizing all I²C transfers; Schmitt-triggered for noise immunity |
| WP | Write-protect control | High = write-disable for upper 2 Kbytes (200h–3FFh); low = full array writable |
| VCC | Power supply | Supplies core logic and EEPROM array; must remain stable during write cycles to prevent corruption |
Key Features
| Feature | Design Value |
|---|---|
| Half-array hardware write-protect | WP pin disables writes to 200h–3FFh while permitting full read access - enables safe storage of factory defaults alongside user-modifiable parameters |
| 16-byte page write buffer | Reduces required I²C start/stop sequences by up to 16× versus byte-write mode - lowers bus overhead and improves system responsiveness |
| Schmitt-trigger SDA/SCL inputs | Provides 0.05 VCC hysteresis - rejects sub-50 ns noise spikes and ensures reliable communication on noisy PCBs or long traces |
| Self-timed erase/write cycle | Eliminates need for external timeout management; ACK polling confirms completion - simplifies firmware implementation and avoids fixed delay penalties |
| Low-power operation | 1 μA max standby current and 1 mA max active read current - extends battery life in portable or energy-harvesting devices |
Applications
| Industrial Sensor Calibration | Embedded Controller Configuration |
|---|---|
Use Scenario: Storing factory-trimmed sensor offset/gain coefficients and linearization tables in smart pressure or temperature transmitters. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed at power-up and during field recalibration via I²C. Use Value: Enables traceable, tamper-resistant calibration data retention across >200 years - critical for metrology-grade instruments requiring long-term accuracy stability. | Use Scenario: Holding boot-time configuration flags, network MAC addresses, and user preferences in HVAC controllers or PLC I/O modules. IC Role / Device Role / Timing Role: I²C slave providing persistent parameter storage independent of main MCU flash wear cycles. Use Value: 1 million write cycles allow daily firmware update logging or runtime parameter tuning without EEPROM exhaustion risk. |
| Medical Device Settings Backup | Automotive Body Control Module |
Use Scenario: Retaining patient-specific therapy parameters and usage logs in portable infusion pumps or diagnostic handhelds. IC Role / Device Role / Timing Role: Secure, low-power data logger interfaced to ARM Cortex-M3/M4 host via I²C. Use Value: WP pin isolates critical safety-critical defaults (200h–3FFh) from user-modifiable fields - prevents accidental overwrite during service mode. | Use Scenario: Storing seat position memory, mirror presets, and lighting profiles in automotive door modules. IC Role / Device Role / Timing Role: Industrial-temp-rated EEPROM interfaced to CAN-to-I²C bridge IC for infotainment-linked features. Use Value: −40°C to +85°C operation and 4 kV ESD rating ensure reliable function in under-hood or door cavity environments subject to thermal cycling and EMI. |
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 | No tape-and-reel packaging; identical electrical specs and pinout | Not suitable for automated SMT assembly; requires manual placement or tube-to-tape conversion | Select 24LC08BHT-I/SN for direct pick-and-place integration without secondary packaging steps |
| AT24C08D-SSHM-T | Same 8 Kbit capacity, but supports 1 MHz I²C and wider VCC (1.7–5.5V); no WP pin | Lacks hardware write-protect - requires software-based protection or external logic for secure defaults | Choose AT24C08D-SSHM-T only if higher speed or lower voltage operation is mandatory and WP functionality is implemented elsewhere |
Compared with 24LC08B-I/SN, the 24LC08BHT-I/SN adds tape-and-reel delivery for production scalability; versus AT24C08D-SSHM-T, it trades 1 MHz capability and broader VCC for guaranteed WP-based security and proven industrial-temperature reliability.
Availability
24LC08BHT-I/SN is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded controller configuration, medical device settings backup, and automotive body control module applications requiring stable component supply, long-lifecycle support, and RoHS-compliant sourcing.
Supply support for 24LC08BHT-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 24LC08BHT-I/SN belongs to Microchip's 24LCxxH family of I²C serial EEPROMs, designed specifically for robust, low-power, and noise-immune nonvolatile storage in industrial, automotive, and medical systems where data integrity and long-term reliability are essential.
FAQ
What is the minimum VCC required for reliable operation of the 24LC08BHT-I/SN?
The 24LC08BHT-I/SN requires a minimum VCC of 2.5V for full specification compliance, including 400 kHz I²C operation and guaranteed write functionality. Operation below 2.5V is not supported - unlike the 24AA08H variant, which operates down to 1.7V. This 2.5V threshold ensures stable internal charge pump performance during EEPROM write cycles and prevents data corruption.
Does the 24LC08BHT-I/SN support page write operations, and what is the maximum page size?
Yes, the 24LC08BHT-I/SN supports page write operations with a maximum buffer size of 16 bytes. Page writes must remain within a single physical page boundary (i.e., addresses aligned to 00h–0Fh, 10h–1Fh, etc.); crossing boundaries causes wraparound within the current page. This 16-byte limit reduces I²C transaction overhead and accelerates multi-byte updates compared to byte-write mode.
How does the WP pin function on the 24LC08BHT-I/SN, and what memory region does it protect?
The WP pin on the 24LC08BHT-I/SN enables hardware write-protection for memory addresses 200h to 3FFh (the upper 2 Kbytes). When WP is tied to VCC, writes to this half-array are inhibited; reads remain fully functional. When WP is tied to VSS, full-array write access is enabled. This feature allows separation of immutable factory defaults from user-modifiable data without software intervention.
Are the A0, A1, and A2 pins functional on the 24LC08BHT-I/SN?
No, the A0, A1, and A2 pins on the 24LC08BHT-I/SN are not internally connected and serve no functional purpose. They are designated as "No Connect" (NC) in the datasheet and may be left floating or tied to VSS or VCC without affecting device operation, addressing, or I²C communication - simplifying PCB layout and eliminating need for external biasing.
What is the endurance and data retention specification for the 24LC08BHT-I/SN?
The 24LC08BHT-I/SN guarantees 1 million erase/write cycles and greater than 200 years of data retention at +85°C ambient temperature. These specifications are characterized and ensured per Microchip's qualification standards - not merely typical values - making it suitable for applications requiring decades-long data integrity without refresh, such as industrial calibration archives or medical device audit logs.
24LC08BHT-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:
- 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-SOIC
24LC08BHT-I/SN FAQ
1.How can I place an order for 24LC08BHT-I/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC08BHT-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 24LC08BHT-I/SN reliable?
The price and inventory of 24LC08BHT-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 24LC08BHT-I/SN is usually 5 days.
3.What payment methods are accepted for 24LC08BHT-I/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC08BHT-I/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC08BHT-I/SN?
24LC08BHT-I/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC08BHT-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 24LC08BHT-I/SN?
For technical support, including 24LC08BHT-I/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC08BHT-I/SN requirements.
6.How does Aetrix verify that 24LC08BHT-I/SN is sourced from the original manufacturer or authorized distributors?
All 24LC08BHT-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 24LC08BHT-I/SN meets industry standards.
7.What is the process for return or replacement of 24LC08BHT-I/SN?
All 24LC08BHT-I/SN units undergo pre-shipment inspection (PSI). If there is an issue with 24LC08BHT-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 24LC08BHT-I/SN part is unused and in its original packaging.
Return procedure for 24LC08BHT-I/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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