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Home > Products > Integrated Circuits (ICs) > Memory > Memory

Microchip Technology 24LC02BHT-E/MNY

Name: 24LC02BHT-E/MNY
Brand: Microchip Technology
SKU: 24LC02BHT-E/MNY
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 24LC02BHT-E/MNY

Manufacturer:: Microchip Technology

Category:: Memory

Package:: 8-WFDFN Exposed Pad

Datasheet:: 24LC02BHT-E/MNY.pdf

Description:: IC EEPROM 2KBIT I2C 400KHZ 8TDFN

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Product details

Overview

24LC02BHT-E/MNY from Microchip Technology Inc. is a 2 Kbit I²C-compatible serial EEPROM organized as 256 × 8-bit memory with hardware write-protect for the upper half-array (80h–FFh), 5 ms max page write time, and operation from 2.5V to 5.5V. It supports 400 kHz clock frequency at V_CC ≥ 2.5V and is qualified for extended temperature range (–40°C to +125°C), making it suitable for automotive body control modules requiring nonvolatile parameter storage.

For engineers reviewing the 24LC02BHT-E/MNY datasheet, 24LC02BHT-E/MNY pinout, 24LC02BHT-E/MNY application, or 24LC02BHT-E/MNY equivalent, key selection criteria include its half-array write-protection logic, Schmitt-triggered SDA/SCL inputs for noise immunity, 8-byte page buffer architecture, and AEC-Q100 qualification for under-hood deployment.

Technical Context

The 24LC02BHT-E/MNY implements a two-wire I²C interface with fixed 7-bit client address (1010xxx) and R/W bit control, supporting byte and page write modes. Its internal Address Pointer auto-increments during sequential reads and random-access writes, enabling efficient firmware update logging and calibration data retention.

Write protection is implemented via the WP pin: tied to V_CC, it disables writes to addresses 80h–FFh while permitting full read access; tied to V_SS, full read/write capability is enabled. The device uses on-chip charge-pump circuitry for EEPROM programming and includes built-in acknowledge polling to detect write-cycle completion without timeout delays.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Size	2 Kbit (256 × 8-bit), sufficient for storing unique device IDs, calibration coefficients, or boot configuration flags in space-constrained designs.
V_CC Range	2.5V to 5.5V - compatible with 3.3V and 5V microcontroller I/O domains without level-shifting.
Max Clock Frequency	400 kHz at V_CC ≥ 2.5V - enables fast parameter loading during system initialization or firmware updates.
Page Write Buffer	8 bytes - reduces I²C transaction count when writing contiguous configuration blocks, improving bus efficiency.
Write Protection	Hardware-enabled half-array (80h–FFh) via WP pin - prevents accidental overwrites of critical firmware parameters while allowing runtime logging in lower memory.
Endurance & Retention	1 million erase/write cycles and >200 years data retention - meets long-life requirements for automotive ECUs and industrial controllers.
Temperature Range	–40°C to +125°C (Extended grade) - validated for under-hood and powertrain applications per AEC-Q100 Rev G.

Pinout & Package

24LC02BHT-E/MNY is packaged in an 8-lead TDFN (2 mm × 3 mm, 0.5 mm pitch) with exposed pad. Pin 1 = A0 (NC), Pin 2 = A1 (NC), Pin 3 = A2 (NC), Pin 4 = V_SS, Pin 5 = SDA, Pin 6 = SCL, Pin 7 = WP, Pin 8 = V_CC. The exposed pad may be connected to V_SS or left floating for thermal and electrical performance optimization.

Pin/Terminal	Circuit Role	Design Meaning
A0, A1, A2	No-connect inputs	Internally unconnected; may be left floating or tied to V_SS/V_CC without affecting functionality or I²C addressing.
V_SS	Ground reference	Primary return path for all internal logic and I/O; must be low-impedance for stable EEPROM programming and noise immunity.
SDA	Serial data bidirectional I/O	Open-drain output requiring external pull-up (2 kΩ typical for 400 kHz); carries address, data, and ACK/NACK signals on shared I²C bus.
SCL	Serial clock input	Master-generated clock synchronizing all data transfers; Schmitt-trigger input ensures reliable edge detection on noisy automotive buses.
WP	Write-protect control input	Logic-high (V_CC) enables half-array protection (80h–FFh); logic-low (V_SS) disables protection for full-memory access.
V_CC	Power supply	Supplies core logic, EEPROM array, and I/O drivers; must remain stable during write cycles to prevent data corruption.

Key Features

Feature	Design Value
Schmitt-trigger SDA/SCL inputs	Provides 0.05 × V_CC hysteresis and 50 ns spike suppression - eliminates false triggering from EMI in automotive and industrial environments.
Self-timed erase/write cycle	Automatically manages internal programming voltage and timing - relieves host MCU of timing-critical wait states and simplifies firmware integration.
Hardware write-protect (half-array)	Physically blocks writes to upper 128 bytes (80h–FFh) when WP = V_CC - protects factory-calibrated values or security keys from runtime overwrite.
ESD protection >4 kV	Withstands human-body-model discharges up to 4000 V - reduces risk of field failure during handling and assembly in high-volume manufacturing.
Low-power operation	1 μA max standby current and 1 mA max active read current - extends battery life in always-on telematics and sensor nodes.

Applications

Automotive Body Control Unit	Industrial Sensor Node
Use Scenario: Storing seat position presets, mirror calibration offsets, and door lock configuration across vehicle lifetime. IC Role / Device Role / Timing Role: Nonvolatile parameter storage with AEC-Q100 compliance and extended temperature support. Use Value: Enables personalized user settings retention after battery disconnect and withstands under-dash thermal cycling (–40°C to +125°C).	Use Scenario: Logging temperature/humidity readings and sensor calibration coefficients in wireless environmental monitors. IC Role / Device Role / Timing Role: Low-power, I²C-connected data logger with page-write efficiency for burst-mode sampling. Use Value: 8-byte page buffer reduces I²C transactions by 87% vs. byte-write for 64-byte calibration tables, conserving battery energy.
Medical Infusion Pump	Smart Energy Meter
Use Scenario: Securing drug library metadata, dosage limits, and operator audit trails in Class II medical devices. IC Role / Device Role / Timing Role: Tamper-resistant configuration storage with hardware write-protect for safety-critical parameters. Use Value: WP pin tied to V_CC prevents firmware-level overwrites of maximum flow rate limits, satisfying IEC 62304 traceability requirements.	Use Scenario: Storing tariff schedules, metering constants, and tamper-event timestamps in utility-grade electricity meters. IC Role / Device Role / Timing Role: High-reliability, long-retention memory for regulatory-compliant billing data archiving. Use Value: >200-year data retention and 1M-cycle endurance ensure accurate billing records across 20+ year meter deployments without refresh.

Automotive Body Control Unit

Industrial Sensor Node

Use Scenario: Storing seat position presets, mirror calibration offsets, and door lock configuration across vehicle lifetime.

IC Role / Device Role / Timing Role: Nonvolatile parameter storage with AEC-Q100 compliance and extended temperature support.

Use Value: Enables personalized user settings retention after battery disconnect and withstands under-dash thermal cycling (–40°C to +125°C).

Use Scenario: Logging temperature/humidity readings and sensor calibration coefficients in wireless environmental monitors.

IC Role / Device Role / Timing Role: Low-power, I²C-connected data logger with page-write efficiency for burst-mode sampling.

Use Value: 8-byte page buffer reduces I²C transactions by 87% vs. byte-write for 64-byte calibration tables, conserving battery energy.

Medical Infusion Pump

Smart Energy Meter

Use Scenario: Securing drug library metadata, dosage limits, and operator audit trails in Class II medical devices.

IC Role / Device Role / Timing Role: Tamper-resistant configuration storage with hardware write-protect for safety-critical parameters.

Use Value: WP pin tied to V_CC prevents firmware-level overwrites of maximum flow rate limits, satisfying IEC 62304 traceability requirements.

Use Scenario: Storing tariff schedules, metering constants, and tamper-event timestamps in utility-grade electricity meters.

IC Role / Device Role / Timing Role: High-reliability, long-retention memory for regulatory-compliant billing data archiving.

Use Value: >200-year data retention and 1M-cycle endurance ensure accurate billing records across 20+ year meter deployments without refresh.

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	Same 2 Kbit capacity, 1.7–5.5V V_CC, but rated only for Industrial (–40°C to +85°C) range; no AEC-Q100 qualification.	Lacks extended temperature and automotive qualification - unsuitable for under-hood use but acceptable for consumer or commercial indoor equipment.	Select when cost sensitivity outweighs automotive qualification needs and ambient operating temperature stays below +85°C.
BR24G02FJ-3GE2	2 Kbit I²C EEPROM with 1.6–5.5V operation, 1 MHz max clock, and built-in error correction (ECC); packaged in 8-lead SOP.	Includes ECC for enhanced data integrity in high-radiation or high-noise environments - adds reliability overhead not required in standard automotive applications.	Choose when system-level fault tolerance mandates single-bit error correction, such as aerospace or nuclear instrumentation interfaces.

Compared with AT24C02D-SSHM-T, 24LC02BHT-E/MNY provides guaranteed operation up to +125°C and AEC-Q100 validation for automotive use; compared with BR24G02FJ-3GE2, it offers lower cost and simpler integration where ECC is unnecessary, but lacks radiation-hardened data integrity features.

Availability

24LC02BHT-E/MNY is available at Aetrix Electronics and suitable for automotive body control units, industrial sensor nodes, medical infusion pumps, and smart energy meters requiring stable component supply with long-term lifecycle assurance.

Supply support for 24LC02BHT-E/MNY 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 U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and memory products, with global design and manufacturing infrastructure.

The 24XX02H family-including 24LC02BHT-E/MNY-is designed for robust, low-power nonvolatile storage in automotive, industrial, and medical systems where data integrity, temperature resilience, and I²C bus compatibility are critical.

FAQ

What is the function of the A0, A1, and A2 pins on the 24LC02BHT-E/MNY?

The A0, A1, and A2 pins on the 24LC02BHT-E/MNY are not internally connected and serve no functional purpose. They may be left floating or tied to V_SS or V_CC without affecting device operation, addressing, or I²C communication. This simplifies PCB layout by eliminating the need for external pull-up/down resistors on these pins.

Does the 24LC02BHT-E/MNY support 100 kHz I²C operation at 2.5V?

Yes, the 24LC02BHT-E/MNY supports 100 kHz I²C operation at V_CC = 2.5V. Per DS20002105B, the device operates at 100 kHz for V_CC < 2.5V and up to 400 kHz for V_CC ≥ 2.5V. At exactly 2.5V, both 100 kHz and 400 kHz modes are valid, with timing parameters specified separately for each condition.

How does the write-protect feature work on the 24LC02BHT-E/MNY?

The 24LC02BHT-E/MNY uses the WP pin to enable hardware write-protection: when WP is tied to V_CC, writes to memory addresses 80h–FFh are inhibited while reads remain fully functional; when WP is tied to V_SS, full read/write access to the entire 256-byte array is permitted. No software command is required to activate this protection.

Can the 24LC02BHT-E/MNY be used in a 1.8V system?

No, the 24LC02BHT-E/MNY requires a minimum V_CC of 2.5V and is not rated for 1.8V operation. For 1.7–5.5V systems, Microchip's 24AA02H series (e.g., 24AA02HT-I/MNY) is the compatible alternative, sharing identical pinout and functionality but with lower-voltage capability.

What package type is used for the 24LC02BHT-E/MNY?

The 24LC02BHT-E/MNY is supplied in an 8-lead TDFN package (2 mm × 3 mm body, 0.5 mm pitch) with an exposed thermal pad. This compact, surface-mount package supports high-density PCB layouts and offers improved thermal dissipation compared to SOIC or PDIP variants in the same family.

24LC02BHT-E/MNY Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

Package/Case:: 8-WFDFN Exposed Pad

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:: 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-TDFN (2x3)

24LC02BHT-E/MNY FAQ

1.How can I place an order for 24LC02BHT-E/MNY through Aetrix?

Please submit a Request for Quotation (RFQ) for 24LC02BHT-E/MNY 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 24LC02BHT-E/MNY reliable?

The price and inventory of 24LC02BHT-E/MNY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC02BHT-E/MNY is usually 5 days.

3.What payment methods are accepted for 24LC02BHT-E/MNY?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC02BHT-E/MNY transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 24LC02BHT-E/MNY?

24LC02BHT-E/MNY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 24LC02BHT-E/MNY 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 24LC02BHT-E/MNY?

For technical support, including 24LC02BHT-E/MNY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC02BHT-E/MNY requirements.

6.How does Aetrix verify that 24LC02BHT-E/MNY is sourced from the original manufacturer or authorized distributors?

All 24LC02BHT-E/MNY 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 24LC02BHT-E/MNY meets industry standards.

7.What is the process for return or replacement of 24LC02BHT-E/MNY?

All 24LC02BHT-E/MNY units undergo pre-shipment inspection (PSI). If there is an issue with 24LC02BHT-E/MNY, 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 24LC02BHT-E/MNY part is unused and in its original packaging.

Return procedure for 24LC02BHT-E/MNY:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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