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Microchip Technology 24LC024HT-E/SN
- Part No.:
- 24LC024HT-E/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
24LC024HT-E/SN.pdf
- Description:
- IC EEPROM 2KBIT I2C 1MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,245
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Product details
Overview
24LC024HT-E/SN from Microchip Technology Inc. is a 2 Kbit I²C-compatible serial EEPROM organized as 256 × 8-bit memory, operating from 2.5V to 5.5V with 1 MHz clock support, 1 μA standby current, and hardware write protection for the upper half-array (80h–FFh). It serves as nonvolatile configuration storage in embedded controllers, sensor nodes, and power management ICs requiring reliable data retention over 200 years.
For engineers reviewing the 24LC024HT-E/SN datasheet, 24LC024HT-E/SN pinout, 24LC024HT-E/SN application, or 24LC024HT-E/SN equivalent, this page delivers verified electrical specs, validated 8-pin SOIC package mapping, confirmed I²C timing compliance (1 MHz @ VCC ≥ 2.5V), and real-world use cases in industrial control and automotive subsystems - all extracted directly from Microchip DS22102A.
Technical Context
The 24LC024HT-E/SN implements a two-wire I²C slave interface with Schmitt-trigger inputs on SDA/SCL for noise immunity and slope-controlled outputs to suppress ground bounce. Its internal address counter supports current-address, random, and sequential read modes, while the 16-byte page buffer enables efficient burst writes.
Hardware write protection is controlled exclusively via the WP pin: tied to VCC, it locks addresses 0x80–0xFF; tied to VSS, full array access is permitted. The device uses an internal high-voltage generator and auto-erase logic for self-timed byte/page writes completing in ≤5 ms, with no external timing components required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Kbit (256 × 8-bit single block) - fixed linear address space without bank switching |
| VCC Range | 2.5V to 5.5V - compatible with 3.3V and 5V systems; excludes 1.7V–2.49V operation supported by AA variant |
| Max Clock Frequency | 1 MHz - enables faster firmware updates and configuration loads vs. legacy 100/400 kHz EEPROMs |
| Write Endurance | 1 million erase/write cycles - sufficient for daily logging over 27+ years at 100 cycles/day |
| Data Retention | 200 years at +25°C - ensures long-term calibration and serial number persistence in unpowered devices |
| Standby Current | 1 μA max - minimizes battery drain in always-on IoT edge nodes and backup power circuits |
| Page Write Buffer | 16 bytes - reduces I²C transaction overhead by up to 15× vs. byte-write for contiguous data blocks |
Pinout & Package
24LC024HT-E/SN is packaged in an 8-pin SOIC (150 mil), with lead-free, RoHS-compliant finish and industrial temperature range (−40°C to +85°C). Pin 1 is A0; pin 4 is VSS; pin 8 is VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Chip Select Input | LSB of 3-bit hardware address; sets device ID on shared I²C bus (up to 8 devices) |
| A1 | Chip Select Input | Middle bit of hardware address; enables multi-device memory expansion without software remapping |
| A2 | Chip Select Input | MSB of hardware address; allows contiguous 16 Kbit addressing across eight devices |
| VSS | Ground Reference | Return path for all internal logic and I/O; must be low-impedance to ensure noise margin |
| SDA | Serial Data I/O | Open-drain bidirectional bus line; requires external pull-up (2 kΩ typical for 1 MHz) |
| SCL | Serial Clock Input | Master-generated clock synchronizing all read/write transfers; Schmitt-trigger input rejects <50 ns spikes |
| WP | Hardware Write-Protect | Active-high enable for half-array lock (0x80–0xFF); prevents accidental firmware corruption during field updates |
| VCC | Power Supply | Primary supply rail (2.5–5.5V); internal voltage detector disables writes below 1.5V to prevent partial writes |
Key Features
| Feature | Design Value |
|---|---|
| I²C Bus Compatibility | Fully compliant with standard-mode (100 kHz), fast-mode (400 kHz), and fast-mode plus (1 MHz) timing requirements per NXP specification |
| Schmitt Trigger Inputs | Input hysteresis ≥0.05×VCC on SDA/SCL - eliminates false triggering from EMI in motor drives and power converters |
| Output Slope Control | Controlled rise/fall times (≤300 ns @ VCC ≥2.5V) - prevents ground bounce-induced system resets in dense PCB layouts |
| Half-Array Hardware Write Protect | Physical lock of upper 128 bytes (0x80–0xFF) via WP pin - secures critical boot parameters independent of firmware state |
| 16-Byte Page Write Buffer | Reduces I²C bus occupancy by batching up to 16 bytes per Stop condition - cuts configuration write time from 128 ms (byte) to 8 ms (page) |
Applications
| Industrial Sensor Calibration | Automotive Body Control Module |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain coefficients for temperature, pressure, and humidity sensors in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding trim values accessed at power-up before ADC initialization. Use Value: Enables one-time calibration during manufacturing, eliminating need for recalibration in field; 200-year retention ensures accuracy over equipment lifetime. |
Use Scenario: Saving user preferences (seat position, mirror angle, lighting profiles) and fault logs in vehicle body control units. IC Role / Device Role / Timing Role: Dedicated I²C slave storing persistent settings updated only when user changes configuration or fault occurs. Use Value: WP pin hardwired to VCC protects last 128 bytes containing safety-critical fault history from overwrite during normal operation. |
| Medical Device Serial Numbering | Smart Energy Meter Firmware Patch Storage |
Use Scenario: Embedding unique device identifiers, manufacturing date, and regulatory certification codes in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure serial number vault written once during final test; read-only during device operation. Use Value: Prevents cloning via hardware-enforced write protection; 1 μA standby current extends battery life in handheld units. |
Use Scenario: Holding field-upgradable firmware patches for metrology ICs in utility-grade electricity meters deployed for >15 years. IC Role / Device Role / Timing Role: Secondary code storage accessible only during secure bootloader update sequence via isolated I²C channel. Use Value: 1 million endurance cycles support quarterly patch deployments over 27+ years; 1 MHz interface enables sub-second patch validation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA024HT-E/SN | Wider VCC range (1.7–5.5V); supports 100/400 kHz only; lower 1.7V operation enables coin-cell compatibility | Preferred for ultra-low-power battery-powered devices where 1.7V start-up is required | Select when system operates below 2.5V or requires extended low-voltage functionality |
| AT24C02C-SSHM-T | Same 2 Kbit size, 1 MHz I²C, and SOIC-8 package; rated for −40°C to +85°C; 1M endurance; but lacks half-array hardware write protect | Relies on software-based protection; unsuitable where physical lock of critical memory region is mandated | Choose when cost sensitivity outweighs need for hardware-level write protection |
Compared with 24LC024HT-E/SN, the 24AA024HT-E/SN adds 1.7V operation at the cost of reduced maximum clock speed, while the AT24C02C-SSHM-T offers identical speed and package but omits the dedicated WP pin - making 24LC024HT-E/SN optimal for systems requiring both 1 MHz throughput and hardware-enforced memory partitioning.
Availability
24LC024HT-E/SN is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive body control modules, medical device serialization, and smart energy meter firmware patch storage requiring stable component supply across extended product lifecycles.
Supply support for 24LC024HT-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, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 24LC024H family was designed specifically for robust, low-power I²C-based nonvolatile storage in automotive, industrial, and medical applications where data integrity, long-term retention, and hardware-level security are critical.
FAQ
What is the operating voltage range for the 24LC024HT-E/SN?
The 24LC024HT-E/SN operates from 2.5V to 5.5V DC. This range ensures compatibility with standard 3.3V and 5V logic systems. Operation below 2.5V is not supported - unlike the 24AA024H variant, which functions down to 1.7V. The device includes an internal voltage detector that disables write operations if VCC falls below 1.5V to prevent data corruption.
Does the 24LC024HT-E/SN support 1 MHz I²C communication?
Yes, the 24LC024HT-E/SN fully supports 1 MHz I²C clock frequency when VCC is 2.5V or higher. This capability is explicitly specified in Microchip DS22102A, Table 1-2, and enables faster configuration writes compared to legacy 100 kHz EEPROMs. At lower voltages (e.g., 1.7–1.8V), maximum clock rate drops to 100 kHz, but 24LC024HT-E/SN does not operate below 2.5V.
How does hardware write protection work on the 24LC024HT-E/SN?
Hardware write protection on the 24LC024HT-E/SN is controlled by the WP pin: when tied to VCC, addresses 0x80–0xFF (upper 128 bytes) are locked against write or erase; when tied to VSS, full array access is enabled. This protection is active regardless of I²C command - even valid write commands to protected addresses are ignored, though the device still acknowledges the instruction.
What package type is used for the 24LC024HT-E/SN?
The 24LC024HT-E/SN uses an 8-pin SOIC (Small Outline Integrated Circuit) package with 150 mil body width, lead-free and RoHS-compliant finish. Pin 1 is A0, pin 4 is VSS, and pin 8 is VCC. This package is industry-standard, compatible with automated pick-and-place and reflow soldering, and specified in Microchip DS22102A, Section 9.1 and Package Drawing C04-057.
What is the endurance and data retention specification for the 24LC024HT-E/SN?
The 24LC024HT-E/SN guarantees 1 million erase/write cycles and 200 years of data retention at +25°C. These values are characterized and ensured per Microchip DS22102A, Sections 1.0 and 1.1. Retention degrades with temperature - at +85°C, expected retention is ~50 years - but remains sufficient for industrial and automotive applications with typical field lifetimes under 15 years.
24LC024HT-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:
- 2Kbit
- Memory Organization:
- 256 x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 1 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 400 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
24LC024HT-E/SN FAQ
1.How can I place an order for 24LC024HT-E/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC024HT-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 24LC024HT-E/SN reliable?
The price and inventory of 24LC024HT-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 24LC024HT-E/SN is usually 5 days.
3.What payment methods are accepted for 24LC024HT-E/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC024HT-E/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC024HT-E/SN?
24LC024HT-E/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC024HT-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 24LC024HT-E/SN?
For technical support, including 24LC024HT-E/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC024HT-E/SN requirements.
6.How does Aetrix verify that 24LC024HT-E/SN is sourced from the original manufacturer or authorized distributors?
All 24LC024HT-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 24LC024HT-E/SN meets industry standards.
7.What is the process for return or replacement of 24LC024HT-E/SN?
All 24LC024HT-E/SN units undergo pre-shipment inspection (PSI). If there is an issue with 24LC024HT-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 24LC024HT-E/SN part is unused and in its original packaging.
Return procedure for 24LC024HT-E/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24LC024HT-E/SN Tags
-
M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
Microchip Technology
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AT24C02C-SSHM-T
Microchip Technology
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24LC01BT-I/OT
Microchip Technology
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M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
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AT24C04C-SSHM-T
Microchip Technology
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24LC01BT-I/SN
Microchip Technology
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24AA02UIDT-I/OT
Microchip Technology
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AT24C08C-STUM-T
Microchip Technology
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