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Microchip Technology 24LC04BHT-E/MS
- Part No.:
- 24LC04BHT-E/MS
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
24LC04BHT-E/MS.pdf
- Description:
- IC EEPROM 4KBIT I2C 400KHZ 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,438
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Product details
Overview
24LC04BHT-E/MS from Microchip Technology Inc. is a 4-Kbit I²C-compatible serial EEPROM organized as two 256 × 8-bit blocks, operating from 2.5V to 5.5V with 400 kHz max clock frequency, 1 µA standby current, and hardware write-protect for the upper half-array (100h–1FFh). It is used in embedded systems for storing calibration data, configuration settings, and firmware parameters where low-power nonvolatile memory is required.
For engineers reviewing the 24LC04BHT-E/MS datasheet, 24LC04BHT-E/MS pinout, 24LC04BHT-E/MS application, or 24LC04BHT-E/MS equivalent, key selection criteria include extended temperature support (–40°C to +125°C), MSOP-8 packaging, half-array write-protection logic, and compatibility with standard I²C bus timing at 400 kHz under industrial and extended temp conditions.
Technical Context
The 24LC04BHT-E/MS implements a two-wire I²C interface with Schmitt-trigger inputs and slope-controlled outputs to suppress noise and eliminate ground bounce. Its internal address counter supports current-address, random, and sequential read modes, while the 16-byte page buffer enables efficient page writes.
Write protection is implemented via the WP pin: tied to VCC, it disables writes to addresses 100h–1FFh; tied to VSS, full array access is enabled. The device uses self-timed erase/write cycles with no external timing components required and supports acknowledge polling to detect write completion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4 Kbit (2 × 256 × 8-bit blocks), enabling storage of up to 512 bytes of persistent configuration or calibration data |
| Supply Voltage Range | 2.5V to 5.5V - compatible with 3.3V and 5V logic domains without level shifting |
| Max Clock Frequency | 400 kHz - supports standard-mode I²C timing with guaranteed setup/hold margins across full temp range |
| Standby Current | 1 µA (I-temp), 3 µA (E-temp) - suitable for battery-backed or energy-constrained applications |
| Page Write Time | 5 ms maximum - defines minimum delay between successive page write commands |
| Endurance | 1,000,000 erase/write cycles - ensures long-term reliability in field-updatable systems |
| Data Retention | 200 years - guarantees data integrity over product lifetime without refresh |
Pinout & Package
24LC04BHT-E/MS is housed in an 8-lead MSOP package (3.0 mm × 3.0 mm × 1.0 mm body height) with gull-wing leads, optimized for high-density PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0, A1, A2 | Device Address Inputs | No internal connection - may be left floating or tied to VSS/VCC without affecting operation |
| VSS | Ground Reference | Return path for all internal circuitry; must be connected to system ground plane |
| SDA | Serial Data I/O | Open-drain bidirectional bus line requiring external pull-up resistor (2 kΩ typical for 400 kHz) |
| SCL | Serial Clock Input | Master-generated clock signal synchronizing all I²C transactions |
| WP | Write-Protect Control | Logic-high (VCC) enables half-array protection (100h–1FFh); logic-low (VSS) enables full-array writes |
| VCC | Power Supply | Primary supply input; must be decoupled with 0.1 µF ceramic capacitor near the pin |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Provides 0.05×VCC hysteresis on SDA/SCL, rejecting noise spikes up to 50 ns and ensuring robust bus operation in electrically noisy environments |
| Output slope control | Limiting edge rates eliminates ground bounce during switching, preventing false Start/Stop detection on shared I²C buses |
| Hardware write-protect | Dedicated WP pin enables selective locking of upper 256-byte block (100h–1FFh), protecting critical firmware or calibration data from accidental overwrite |
| 16-byte page write buffer | Reduces I²C transaction overhead by allowing up to 16 bytes to be loaded before initiating internal write cycle, improving write throughput |
| Extended temperature grade | Rated for –40°C to +125°C operation, supporting deployment in automotive engine compartments and industrial control enclosures |
Applications
| Automotive Body Control Module | Industrial PLC Configuration Storage |
|---|---|
Use Scenario: Storing seat position presets, mirror angles, and lighting profiles in vehicle door modules. IC Role / Device Role / Timing Role: Nonvolatile configuration memory accessed via I²C during power-up and user adjustment events. Use Value: Enables recall of personalized settings after ignition cycle; WP pin prevents corruption during ECU firmware updates. | Use Scenario: Holding I/O mapping tables, PID tuning parameters, and alarm thresholds in programmable logic controllers. IC Role / Device Role / Timing Role: Persistent parameter store updated infrequently but read frequently during scan cycles. Use Value: Maintains operational integrity across power loss; 200-year retention ensures data survival over equipment lifetime. |
| Medical Infusion Pump Calibration | Smart Energy Meter Firmware Patch Storage |
Use Scenario: Saving flow-rate calibration coefficients and sensor offset values validated during factory test and field service. IC Role / Device Role / Timing Role: Secure, tamper-resistant memory for safety-critical calibration data accessed only during initialization or maintenance mode. Use Value: Half-array write-protect (WP = VCC) locks calibration region while permitting runtime log storage in unprotected lower block. | Use Scenario: Storing signed firmware patches downloaded over HAN (Home Area Network) for secure over-the-air updates. IC Role / Device Role / Timing Role: Trusted boot component holding verified patch metadata and signature verification keys. Use Value: 1M-cycle endurance supports repeated field updates; extended temp rating ensures reliability in outdoor meter enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA04HT-I/MS | Lower VCC min (1.7V), same 400 kHz max clock, I-temp only (–40°C to +85°C) | Limited to commercial/industrial ambient environments; unsuitable for under-hood or high-ambient industrial use | Select when 1.7V operation is required and extended temperature is not needed |
| 24FC04HT-E/MS | 1 MHz max clock, 1.7V–5.5V supply, same E-temp rating and MSOP-8 package | Enables higher-speed I²C communication in bandwidth-constrained systems; requires tighter AC timing compliance | Select when faster write/read throughput justifies stricter bus timing design and characterization |
Compared with 24AA04HT-I/MS, the 24LC04BHT-E/MS trades 1.7V operation for extended temperature capability and maintains identical pinout and software interface; compared with 24FC04HT-E/MS, it sacrifices 1 MHz speed for broader legacy I²C timing margin and simpler layout validation.
Availability
24LC04BHT-E/MS is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLCs, medical infusion devices, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 24LC04BHT-E/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 microcontrollers, analog components, and memory solutions, serving automotive, industrial, consumer, and communications markets with vertically integrated silicon and development tools.
The 24LC04BHT-E/MS belongs to Microchip's 24XX04H family of I²C EEPROMs, designed specifically for reliable, low-power nonvolatile data storage in space- and power-constrained embedded systems with demanding environmental requirements.
FAQ
What is the operating voltage range for the 24LC04BHT-E/MS?
The 24LC04BHT-E/MS operates from 2.5V to 5.5V. This range ensures compatibility with both 3.3V and 5V microcontroller I²C interfaces without level-shifting circuitry. Operation below 2.5V is not supported - unlike the 24AA04H variant, which supports down to 1.7V. The specified range is validated across the full extended temperature range (–40°C to +125°C).
Does the 24LC04BHT-E/MS support 1 MHz I²C communication?
No, the 24LC04BHT-E/MS supports up to 400 kHz I²C clock frequency. For 1 MHz operation, Microchip offers the functionally similar 24FC04HT-E/MS. Attempting 1 MHz operation on the 24LC04BHT-E/MS may result in timing violations, failed acknowledges, or unreliable data transfer due to insufficient setup/hold margins at that rate.
How does the write-protect feature work on the 24LC04BHT-E/MS?
The WP pin on the 24LC04BHT-E/MS controls hardware write protection: when tied to VCC, writes to memory addresses 100h–1FFh (upper 256 bytes) are inhibited while reads remain functional; when tied to VSS, full-array write access is enabled. This allows safe storage of critical calibration or firmware data in the protected block while permitting runtime logging in the lower block.
What package type is used for the 24LC04BHT-E/MS?
The 24LC04BHT-E/MS uses an 8-lead MSOP (Mini Small Outline Package) with 3.0 mm × 3.0 mm body dimensions and 0.65 mm lead pitch. This surface-mount package supports high-density PCB layouts and is compatible with standard reflow soldering profiles. Pin 1 is marked by a notch or beveled corner on the package top surface.
Can the 24LC04BHT-E/MS be used in automotive applications?
Yes, the 24LC04BHT-E/MS is AEC-Q100 qualified and rated for extended temperature operation (–40°C to +125°C), making it suitable for automotive applications including body control modules, instrument clusters, and ADAS subsystems. Its 1 million endurance cycles and 200-year data retention meet automotive long-life reliability requirements without periodic refresh.
24LC04BHT-E/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:
- 4Kbit
- Memory Organization:
- 256 x 8 x 2
- 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-MSOP
24LC04BHT-E/MS FAQ
1.How can I place an order for 24LC04BHT-E/MS through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC04BHT-E/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 24LC04BHT-E/MS reliable?
The price and inventory of 24LC04BHT-E/MS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC04BHT-E/MS is usually 5 days.
3.What payment methods are accepted for 24LC04BHT-E/MS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC04BHT-E/MS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC04BHT-E/MS?
24LC04BHT-E/MS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC04BHT-E/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 24LC04BHT-E/MS?
For technical support, including 24LC04BHT-E/MS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC04BHT-E/MS requirements.
6.How does Aetrix verify that 24LC04BHT-E/MS is sourced from the original manufacturer or authorized distributors?
All 24LC04BHT-E/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 24LC04BHT-E/MS meets industry standards.
7.What is the process for return or replacement of 24LC04BHT-E/MS?
All 24LC04BHT-E/MS units undergo pre-shipment inspection (PSI). If there is an issue with 24LC04BHT-E/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 24LC04BHT-E/MS part is unused and in its original packaging.
Return procedure for 24LC04BHT-E/MS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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