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Microchip Technology 24LC04BHT-E/SN
- Part No.:
- 24LC04BHT-E/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
24LC04BHT-E/SN.pdf
- Description:
- IC EEPROM 4KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,228
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Product details
Overview
24LC04BHT-E/SN 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 (I-temp), and hardware write-protection for the upper half-array (100h–1FFh). It is used in embedded systems for storing calibration data, configuration settings, and firmware parameters.
For engineers reviewing the 24LC04BHT-E/SN datasheet, 24LC04BHT-E/SN pinout, 24LC04BHT-E/SN application, or 24LC04BHT-E/SN equivalent, this page delivers verified electrical specs, SOIC-8 package details, I²C timing compliance, endurance (1M cycles), and real-world use cases in industrial control, automotive subsystems, and IoT edge nodes.
Technical Context
The 24LC04BHT-E/SN 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 burst writes.
Write protection is controlled via the WP pin: tied to VSS for full array access, or VCC to lock addresses 100h–1FFh. The device uses self-timed erase/write cycles with 5 ms maximum page write time and supports ACK polling to detect write completion without fixed delays.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4 Kbit (2 × 256 × 8-bit blocks), enabling storage of 512 bytes of nonvolatile configuration or calibration data |
| Supply Voltage | 2.5V–5.5V - compatible with standard 3.3V and 5V logic domains without level-shifting |
| I²C Clock Frequency | Up to 400 kHz - supports high-speed communication in real-time embedded systems |
| Standby Current | 1 µA at -40°C to +85°C - critical for battery-powered applications requiring ultra-low quiescent power |
| Endurance | 1,000,000 erase/write cycles - ensures long-term reliability in frequently updated parameter storage |
| Data Retention | Greater than 200 years - guarantees data integrity across product lifecycles in industrial deployments |
| Write Protection | Hardware-enabled half-array (100h–1FFh) lock via WP pin - prevents accidental overwrites of critical firmware or security keys |
Pinout & Package
24LC04BHT-E/SN is packaged in an 8-lead narrow SOIC (SN) with 1.27 mm pitch, 3.90 mm body width, and JEDEC-standard footprint (Microchip Drawing C04-057-SN Rev F). Pin 1 is marked by a beveled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Address Input | No internal connection - may be left floating or tied to VSS/VCC without affecting operation |
| A1 | Address Input | No internal connection - unused per device architecture; no impact on addressing or I²C slave address |
| A2 | Address Input | No internal connection - not bonded; irrelevant for 24LC04BH family addressing (fixed 1010xxx0/1 client address) |
| VSS | Ground Reference | Primary return path for all internal circuitry; must be low-impedance to ensure noise immunity and stable I²C signaling |
| SDA | Serial Data I/O | Open-drain bidirectional bus line requiring external pull-up (2 kΩ typical for 400 kHz); carries addresses, commands, and data |
| SCL | Serial Clock Input | Input-only synchronous clock line driven by host controller; defines timing for all I²C transactions |
| WP | Write-Protect Control | Logic-level input: VSS enables full memory write access; VCC locks upper 256 bytes (100h–1FFh) against writes |
| VCC | Power Supply | Single 2.5–5.5V supply powering EEPROM core, interface logic, and internal charge pump for write operations |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs on SDA/SCL | Enables reliable operation on noisy PCBs or long traces by rejecting sub-threshold voltage fluctuations |
| Output slope control | Prevents ground bounce during signal transitions, eliminating false Start/Stop detection in shared-bus environments |
| Page write buffer (16 bytes) | Reduces total write time vs. byte-by-byte writes - e.g., 16-byte update completes in one 5 ms cycle instead of sixteen |
| ACK polling support | Allows host to detect write completion dynamically without fixed delays, maximizing I²C bus utilization |
| ESD protection >4 kV | Meets IEC 61000-4-2 Level 3 requirements, reducing need for external transient suppression in end equipment |
Applications
| Industrial Sensor Calibration | Automotive Body Control Module |
|---|---|
Use Scenario: Storing temperature-compensated offset/gain coefficients for analog sensor front-ends in factory automation systems. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed during power-up or recalibration routines via I²C. Use Value: Enables field-replaceable sensors with persistent calibration data, eliminating manual reprogramming after replacement. | Use Scenario: Holding seat position memory, mirror presets, and lighting profiles in vehicle door modules. IC Role / Device Role / Timing Role: I²C slave storing user-defined settings retained across ignition cycles. Use Value: Supports AEC-Q100 qualified operation up to +125°C ambient, ensuring reliability in under-hood and door module environments. |
| IoT Edge Node Configuration | Medical Device Parameter Storage |
Use Scenario: Saving network credentials, firmware update flags, and operational thresholds in battery-powered wireless sensors. IC Role / Device Role / Timing Role: Low-power I²C EEPROM accessed infrequently during boot or OTA updates. Use Value: 1 µA standby current extends coin-cell battery life to multi-year operation in unattended deployments. | Use Scenario: Archiving device serial numbers, calibration logs, and usage counters in portable diagnostic tools. IC Role / Device Role / Timing Role: Secure, tamper-resistant storage for regulatory-mandated traceability data. Use Value: Hardware write-protect (WP = VCC) prevents unauthorized modification of critical audit trail entries. |
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/SN | Lower VCC min (1.7V), same 400 kHz max clock, identical SOIC-8 package and pinout | Better suited for 1.8V systems; lacks extended temperature grade (E) support | Select when operating below 2.5V or when only industrial temp range (-40°C to +85°C) is required |
| AT24C04-SSHM-T | Same 4-Kbit size, 1.8–5.5V supply, 400 kHz I²C, but rated only to +85°C and lacks hardware half-array write-protect | Requires software-based protection schemes; not AEC-Q100 qualified | Choose for cost-sensitive consumer applications where automotive qualification and hardware WP are unnecessary |
Compared with 24AA04HT-I/SN, the 24LC04BHT-E/SN offers extended temperature support (+125°C) and guaranteed 2.5V minimum operation, while AT24C04-SSHM-T trades automotive qualification and hardware write-protection for broader voltage range and lower unit cost in non-critical environments.
Availability
24LC04BHT-E/SN is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive body control modules, and IoT edge node configuration requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 24LC04BHT-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 industrial, automotive, and communications markets with high-reliability silicon and development tools.
The 24LC04BHT-E/SN belongs to Microchip's 24XX04H family of I²C EEPROMs, designed specifically for robust, low-power nonvolatile data storage in space-constrained, noise-prone embedded systems demanding AEC-Q100 qualification and extended temperature operation.
FAQ
What is the maximum I²C clock frequency supported by the 24LC04BHT-E/SN?
The 24LC04BHT-E/SN supports up to 400 kHz I²C clock frequency when VCC is between 2.5V and 5.5V. At voltages below 2.5V, the maximum clock rate drops to 100 kHz - however, the 24LC04BHT-E/SN is not rated for operation below 2.5V, so 400 kHz is its guaranteed maximum. This aligns with Fast-mode I²C specifications and enables efficient data transfer in time-critical embedded applications.
Does the 24LC04BHT-E/SN require external pull-up resistors on SDA and SCL lines?
Yes, the 24LC04BHT-E/SN requires external pull-up resistors on both SDA and SCL lines because its I²C interface uses open-drain outputs. For 400 kHz operation, a 2 kΩ pull-up to VCC is recommended. The value balances rise time (to meet AC timing specs like TR ≤ 300 ns) and power consumption, especially important in battery-powered designs using the 24LC04BHT-E/SN.
How does hardware write-protection work on the 24LC04BHT-E/SN?
Hardware write-protection on the 24LC04BHT-E/SN is controlled by the WP pin: when tied to VCC, writes to memory addresses 100h–1FFh (upper 256 bytes) are inhibited while reads remain functional; when tied to VSS, full memory access is enabled. This feature protects critical firmware or calibration data from accidental overwrite - a key requirement in automotive and medical applications using the 24LC04BHT-E/SN.
What is the endurance rating of the 24LC04BHT-E/SN, and how is it tested?
The 24LC04BHT-E/SN is rated for 1,000,000 erase/write cycles at 25°C and 5.5V, measured in page mode. This endurance is ensured through characterization (not 100% tested per unit) and reflects real-world performance under typical operating conditions. It guarantees long-term reliability for applications such as parameter logging or configuration storage where the 24LC04BHT-E/SN undergoes frequent updates over product lifetime.
Is the 24LC04BHT-E/SN AEC-Q100 qualified, and what temperature grades does it support?
Yes, the 24LC04BHT-E/SN is AEC-Q100 qualified and supports both Industrial (I: -40°C to +85°C) and Extended (E: -40°C to +125°C) temperature ranges. The "E" suffix in the part number explicitly denotes extended temperature capability, making it suitable for under-hood automotive electronics, industrial motor drives, and other high-ambient environments where the 24LC04BHT-E/SN must maintain data integrity and functional reliability.
24LC04BHT-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:
- 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-SOIC
24LC04BHT-E/SN FAQ
1.How can I place an order for 24LC04BHT-E/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC04BHT-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 24LC04BHT-E/SN reliable?
The price and inventory of 24LC04BHT-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 24LC04BHT-E/SN is usually 5 days.
3.What payment methods are accepted for 24LC04BHT-E/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC04BHT-E/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC04BHT-E/SN?
24LC04BHT-E/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC04BHT-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 24LC04BHT-E/SN?
For technical support, including 24LC04BHT-E/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC04BHT-E/SN requirements.
6.How does Aetrix verify that 24LC04BHT-E/SN is sourced from the original manufacturer or authorized distributors?
All 24LC04BHT-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 24LC04BHT-E/SN meets industry standards.
7.What is the process for return or replacement of 24LC04BHT-E/SN?
All 24LC04BHT-E/SN units undergo pre-shipment inspection (PSI). If there is an issue with 24LC04BHT-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 24LC04BHT-E/SN part is unused and in its original packaging.
Return procedure for 24LC04BHT-E/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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