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Microchip Technology 24LC024H-I/ST
- Part No.:
- 24LC024H-I/ST
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
24LC024H-I/ST.pdf
- Description:
- IC EEPROM 2KBIT I2C 1MHZ 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:594
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Product details
Overview
24LC024H-I/ST 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 industrial sensor nodes requiring low-power, noise-immune bus communication.
For engineers reviewing the 24LC024H-I/ST datasheet, 24LC024H-I/ST pinout, 24LC024H-I/ST application, or 24LC024H-I/ST equivalent, key selection criteria include VCC range compatibility (2.5–5.5V), 1 MHz I²C timing compliance, half-array hardware write-protect behavior, and TSSOP-8 package footprint constraints.
Technical Context
The 24LC024H-I/ST implements a standard I²C slave interface with Schmitt-triggered SDA/SCL inputs and slope-controlled outputs to suppress ground bounce. Its internal address counter supports current-address, random, and sequential read modes across the full 256-byte space.
Write operations use an on-chip 16-byte page buffer with self-timed erase/write cycles (max 5 ms), while hardware write protection is controlled solely by the WP pin state-tied to VCC to lock addresses 80h–FFh, or to VSS for full array access.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Kbit (256 × 8-bit single block), enabling compact firmware parameter or calibration data storage |
| VCC Operating Range | 2.5V to 5.5V - compatible with 3.3V and 5V logic systems without level shifting |
| Max Clock Frequency | 1 MHz - supports high-speed I²C communication in time-critical embedded control loops |
| Write Endurance | 1 million erase/write cycles - suitable for frequent logging or dynamic configuration updates |
| Data Retention | 200 years at +25°C - ensures long-term reliability in unattended industrial deployments |
| Standby Current | 1 μA max - enables battery-powered operation for >10 years on a CR2032 coin cell |
| Write Protection | Hardware-enabled for upper 128 bytes (80h–FFh) via WP pin - prevents accidental overwrites of critical firmware flags |
Pinout & Package
24LC024H-I/ST is supplied in an 8-pin TSSOP package (3.0 mm × 4.4 mm, 0.65 mm pitch), RoHS-compliant and rated for industrial temperature range (–40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Chip Select Input | User-configurable address bit; sets LSB of 7-bit slave address (1010A2A1A0) |
| A1 | Chip Select Input | User-configurable address bit; sets middle bit of slave address |
| A2 | Chip Select Input | User-configurable address bit; sets MSB of slave address - enables up to eight devices on one I²C bus |
| VSS | Ground Reference | Return path for all internal circuitry; must be connected before VCC during power-up |
| SDA | Serial Data I/O | Open-drain bidirectional bus line; requires external pull-up resistor (2 kΩ typical for 1 MHz) |
| SCL | Serial Clock Input | Master-generated clock synchronizing all data transfers; Schmitt-trigger input rejects noise spikes |
| WP | Write-Protect Control | Active-high enable: tied to VCC locks addresses 80h–FFh; tied to VSS disables protection |
| VCC | Power Supply | Primary supply rail (2.5–5.5V); internal voltage detector disables writes below ~1.5V |
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) specifications |
| Noise Immunity | Schmitt-trigger inputs + 50 ns input filter on SDA/SCL - eliminates false Start/Stop detection on noisy industrial PCBs |
| Page Write Buffer | 16-byte buffer enables burst writes without repeated address overhead - reduces I²C transaction count by up to 94% vs. byte writes |
| Hardware Write Protection | Dedicated WP pin controls lock state of upper 128 bytes - no software intervention required for secure boot flag storage |
| Low-Power Operation | 400 μA active current and 1 μA standby current - minimizes system-level power budget impact in always-on monitoring devices |
Applications
| Industrial Sensor Calibration | Medical Device Configuration |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain coefficients for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed during power-up initialization via I²C. Use Value: Enables field-replaceable sensor modules without recalibration; 200-year retention guarantees accuracy over equipment lifetime. | Use Scenario: Holding user-adjusted therapy parameters and safety limits in portable infusion pumps. IC Role / Device Role / Timing Role: Secure parameter store with hardware write protection preventing runtime corruption of critical dose settings. Use Value: WP pin tied to VCC ensures upper half-array (80h–FFh) remains immutable during pump operation - meeting IEC 62304 Class C requirements. |
| Smart Meter Firmware Flags | Automotive Body Control Module |
Use Scenario: Recording tamper-detection events and firmware update status in ANSI C12.22-compliant electricity meters. IC Role / Device Role / Timing Role: Event log storage with 1M endurance supporting daily timestamped entries for 2,700+ years. Use Value: 1 μA standby current extends battery backup life beyond 10 years; page write reduces meter MCU wake time per log entry. | Use Scenario: Storing seat position presets and mirror adjustment profiles in automotive door modules. IC Role / Device Role / Timing Role: Persistent user preference storage accessed over vehicle CAN-to-I²C gateway during ignition cycle. Use Value: 1 MHz I²C speed allows full 256-byte profile load in <1.3 ms - enabling seamless recall before driver enters vehicle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C02D-SSHM-T | 2 Kbit, 1.7–5.5V VCC, 1 MHz I²C, SOIC-8 only - lacks TSSOP-8 option and half-array WP granularity | Supports wider VCC range but offers only full-array or no hardware write protection | Select when broader supply tolerance is needed and WP granularity is not required |
| BR24G02FJ-3GE2 | 2 Kbit, 1.6–5.5V VCC, 400 kHz max clock, TSSOP-8 - lower speed, higher ESD rating (6 kV) | Optimized for high-noise automotive environments but incompatible with 1 MHz designs | Select for AEC-Q100 Grade 2 applications where 400 kHz suffices and enhanced ESD immunity is mandatory |
Compared with AT24C02D-SSHM-T and BR24G02FJ-3GE2, the 24LC024H-I/ST uniquely delivers 1 MHz I²C speed in TSSOP-8 with precise half-array hardware write protection - making it optimal for space-constrained industrial controllers needing both performance and secure configuration partitioning.
Availability
24LC024H-I/ST is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device configuration, smart meter firmware flags, and automotive body control modules requiring stable component supply across extended production lifecycles.
Supply support for 24LC024H-I/ST 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, analog, FPGA, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 24LC024H belongs to Microchip's serial EEPROM product line, engineered for reliable, low-power nonvolatile storage in industrial, medical, and automotive systems where data integrity and long-term retention are critical.
FAQ
What is the maximum I²C clock frequency supported by the 24LC024H-I/ST?
The 24LC024H-I/ST supports up to 1 MHz I²C clock frequency when operated within its specified VCC range of 2.5V to 5.5V. This fast-mode plus capability enables high-throughput configuration reads and writes, reducing bus occupancy in real-time embedded systems. The 24LC024H-I/ST datasheet confirms this rating under AC characteristics Table 1-2, condition #1 for 2.5V ≤ VCC ≤ 5.5V.
How does hardware write protection work on the 24LC024H-I/ST?
Hardware write protection on the 24LC024H-I/ST is controlled exclusively by the WP pin: when tied to VCC, addresses 80h–FFh (upper 128 bytes) are locked against write or erase; when tied to VSS, full array access is enabled. This protection operates independently of I²C commands and persists through power cycles. The 24LC024H-I/ST does not support software-based write lock bits.
What package type is used for the 24LC024H-I/ST?
The 24LC024H-I/ST uses an 8-pin TSSOP package (3.0 mm × 4.4 mm body, 0.65 mm lead pitch), designated by the "-I/ST" suffix. This surface-mount package meets JEDEC MO-153 standards and is RoHS-compliant. Pinout matches standard 8-pin SOIC but with narrower width and finer pitch - requiring adjusted PCB land patterns.
Can multiple 24LC024H-I/ST devices share the same I²C bus?
Yes, up to eight 24LC024H-I/ST devices can operate on a single I²C bus using unique slave addresses formed by combinations of A0, A1, and A2 pins. Each device responds only when its three address bits match the corresponding bits in the master's control byte (1010A2A1A0). This enables scalable memory expansion up to 16 Kbits without additional address decoding logic.
What is the write endurance and data retention specification for the 24LC024H-I/ST?
The 24LC024H-I/ST guarantees 1 million erase/write cycles and 200 years of data retention at +25°C. These values are characterized per Microchip DS22102A, Section 1.0 Electrical Characteristics (Note 4) and Section 1-1 DC Characteristics (D18). Retention degrades predictably with temperature - e.g., ~100 years at +85°C - but remains sufficient for industrial equipment lifetimes.
24LC024H-I/ST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
24LC024H-I/ST FAQ
1.How can I place an order for 24LC024H-I/ST through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC024H-I/ST 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 24LC024H-I/ST reliable?
The price and inventory of 24LC024H-I/ST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC024H-I/ST is usually 5 days.
3.What payment methods are accepted for 24LC024H-I/ST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC024H-I/ST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC024H-I/ST?
24LC024H-I/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC024H-I/ST 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 24LC024H-I/ST?
For technical support, including 24LC024H-I/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC024H-I/ST requirements.
6.How does Aetrix verify that 24LC024H-I/ST is sourced from the original manufacturer or authorized distributors?
All 24LC024H-I/ST 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 24LC024H-I/ST meets industry standards.
7.What is the process for return or replacement of 24LC024H-I/ST?
All 24LC024H-I/ST units undergo pre-shipment inspection (PSI). If there is an issue with 24LC024H-I/ST, 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 24LC024H-I/ST part is unused and in its original packaging.
Return procedure for 24LC024H-I/ST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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