My Inquiry
My Account
Microchip Technology 24LC02BT-E/LT
- Part No.:
- 24LC02BT-E/LT
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
24LC02BT-E/LT.pdf
- Description:
- IC EEPROM 2KBIT I2C SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:8,340
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
24LC02BT-E/LT from Microchip Technology Inc. is a 2-Kbit I²C-compatible serial EEPROM organized as 256 × 8-bit memory with hardware write-protection, 8-byte page buffer, and operation from 2.5V to 5.5V. It supports 400 kHz clock frequency, delivers ≤1 mA read current and ≤1 µA standby current (I-temp), and is qualified for industrial and extended temperature ranges (–40°C to +125°C). It is used in embedded systems for storing calibration data, configuration settings, and device identifiers.
For engineers reviewing the 24LC02BT-E/LT datasheet, 24LC02BT-E/LT pinout, 24LC02BT-E/LT application, or 24LC02BT-E/LT equivalent, this page provides verified electrical specifications, package mapping to SC-70-5, I²C timing compliance at 400 kHz under extended temperature, WP-controlled full-array protection, and confirmed alternatives for drop-in or functional replacement in space-constrained designs.
Technical Context
The 24LC02BT-E/LT implements a two-wire I²C interface with Schmitt-trigger inputs and slope-controlled outputs to suppress noise and eliminate ground bounce. Its internal address pointer enables current-address, random, and sequential read modes, while ACK polling allows host-driven write-cycle completion detection without fixed delays.
It uses a self-timed erase/write architecture with 5 ms maximum page write time, 1 million endurance cycles, and >200 years of data retention. The device ignores A0–A2 pins (no internal connection), accepts only the fixed 4-bit client address '1010', and relies on external pull-up resistors on SDA/SCL per I²C bus requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Kbit (256 × 8-bit), sufficient for firmware revision IDs, sensor calibration coefficients, or MAC address storage |
| Interface | I²C-compatible two-wire serial interface, compatible with standard microcontroller I²C peripherals without protocol translation |
| Supply Voltage | 2.5V to 5.5V - supports direct connection to 3.3V or 5V logic rails without level shifting |
| Max Clock Frequency | 400 kHz at VCC ≥ 2.5V - enables fast configuration loading in real-time systems |
| Write Protection | Hardware-enabled via WP pin tied to VCC - prevents accidental overwrites during power-up or firmware updates |
| Endurance & Retention | 1,000,000 erase/write cycles and >200 years data retention - suitable for long-life industrial deployments |
| Temperature Range | –40°C to +125°C (Extended grade) - validated for under-hood automotive or high-ambient industrial environments |
Pinout & Package
24LC02BT-E/LT is supplied in a 5-lead SC-70 (Microchip package code "LT") surface-mount package measuring 2.00 mm × 1.25 mm × 0.80 mm (L × W × H), optimized for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SCL | Serial Clock Input | Asynchronous master-generated clock synchronizing all I²C transfers; requires external pull-up resistor |
| SDA | Serial Data I/O | Open-drain bidirectional bus line for address/data transfer; shares pull-up with SCL in standard I²C topology |
| WP | Write-Protect Input | Logic-high (VCC) disables all writes to entire memory array; logic-low (VSS) enables full read/write access |
| VSS | Ground Reference | System ground return path; must be low-impedance and co-located with host MCU ground |
| VCC | Power Supply | Primary supply input (2.5–5.5V); decoupling capacitor (0.1 µF) required within 5 mm of pin |
Key Features
| Feature | Design Value |
|---|---|
| Page Write Buffer | 8-byte buffer enables burst writes without host intervention between bytes, reducing I²C transaction overhead by up to 8× vs. byte-write mode |
| Schmitt Trigger Inputs | Input hysteresis ≥0.05×VCC rejects noise spikes up to 50 ns, ensuring reliable Start/Stop detection on electrically noisy boards |
| Self-Timed Write Cycle | No external timing components needed; internal timer guarantees ≤5 ms completion, simplifying host firmware design |
| ESD Protection | ≥4 kV HBM rating protects against handling damage during assembly and field service |
| RoHS & AEC-Q100 | Compliant with automotive-grade reliability (AEC-Q100 Grade 1) and environmental regulations for global deployment |
Applications
| Automotive Body Control Module | Industrial PLC Configuration Storage |
|---|---|
Use Scenario: Storing seat position presets, mirror angle offsets, and lighting profiles in vehicle door modules. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed via I²C during power-on initialization and runtime updates. Use Value: WP pin prevents corruption during ignition transients; 125°C rating ensures reliability near power electronics. | Use Scenario: Holding I/O mapping tables, calibration constants, and firmware version stamps in modular automation controllers. IC Role / Device Role / Timing Role: Persistent parameter store interfaced to ARM Cortex-M host MCU using standard I²C driver stack. Use Value: 1M endurance supports daily recalibration cycles over 10+ years; SC-70 footprint saves board space in DIN-rail enclosures. |
| Medical Infusion Pump Settings | Smart Energy Meter Calibration |
Use Scenario: Securing drug library parameters, dose limits, and user audit logs in battery-backed portable devices. IC Role / Device Role / Timing Role: Tamper-resistant data vault accessed only after authentication handshake; WP tied to secure supervisor rail. Use Value: Hardware write-protection blocks unauthorized reprogramming; >200-year retention meets FDA long-term traceability mandates. | Use Scenario: Storing meter-specific CT/PT ratios, tariff schedules, and firmware patch signatures in utility-grade meters. IC Role / Device Role / Timing Role: High-reliability parameter bank updated infrequently but requiring guaranteed integrity across 15+ year field life. Use Value: Extended temperature support handles outdoor pole-mount thermal cycling; 4 kV ESD withstands field technician handling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA02T-I/LT | Lower VCC min (1.7V), same 400 kHz max, Industrial temp only (–40°C to +85°C) | Not rated for 125°C operation; unsuitable for under-hood or high-ambient industrial use | Select when system operates down to 1.7V and extended temperature is not required |
| AT24C02D-SSHM-T | Same 2-Kbit size, 1.7–5.5V range, 1 MHz I²C, SOIC-8 package (not SC-70) | Larger SOIC-8 footprint; lacks AEC-Q100 qualification; different pinout (A0/A1/A2 present but unused) | Choose for higher-speed 1 MHz I²C or legacy SOIC layout compatibility, not for space-constrained automotive designs |
Compared with 24LC02BT-E/LT, the 24AA02T-I/LT trades extended temperature support for lower-voltage operation, while the AT24C02D-SSHM-T offers faster I²C and SOIC packaging at the cost of automotive qualification and SC-70 miniaturization - making 24LC02BT-E/LT optimal for compact, high-reliability, high-temperature embedded systems.
Availability
24LC02BT-E/LT is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC configuration storage, and medical infusion pump settings requiring stable component supply across extended temperature and long product lifecycles.
Supply support for 24LC02BT-E/LT 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 automotive, industrial, and consumer markets with high-reliability silicon and development tools.
The 24LC02B family was designed specifically for space-constrained, high-temperature embedded applications requiring robust nonvolatile storage - emphasizing write-protection integrity, I²C interoperability, and AEC-Q100 compliance.
FAQ
What is the operating voltage range for the 24LC02BT-E/LT?
The 24LC02BT-E/LT operates from 2.5V to 5.5V DC. This range ensures compatibility with both 3.3V and 5V logic systems without level-shifting circuitry. Operation below 2.5V is not supported - unlike the 24AA02 variant, which starts at 1.7V. The specified 2.5–5.5V window is validated across the full –40°C to +125°C temperature range per the DS20001709N datasheet.
Does the 24LC02BT-E/LT require external pull-up resistors on SDA and SCL lines?
Yes, the 24LC02BT-E/LT requires external pull-up resistors on both SDA and SCL lines because its I²C interface uses open-drain outputs. Typical values are 2 kΩ for 400 kHz operation and 10 kΩ for 100 kHz. These resistors must connect to the same VCC rail used by the device and be placed close to the 24LC02BT-E/LT pins to maintain signal integrity and meet I²C rise-time specifications.
How does hardware write-protection work on the 24LC02BT-E/LT?
Hardware write-protection on the 24LC02BT-E/LT is controlled by the WP (Write-Protect) pin: when tied to VCC, the entire 256-byte memory array (addresses 00h–FFh) becomes read-only; when tied to VSS, full read/write access is enabled. No internal register programming is needed - protection is purely pin-level and active immediately after power-up, making it ideal for safeguarding critical configuration data during firmware updates or power transitions.
What package type is used for the 24LC02BT-E/LT, and what are its dimensions?
The 24LC02BT-E/LT uses the 5-lead SC-70 package (Microchip package code "LT"), with nominal dimensions of 2.00 mm × 1.25 mm × 0.80 mm (length × width × height). Its small footprint and low profile make it suitable for ultra-compact PCBs, including wearable medical devices and automotive sensors where board area is constrained.
Is the 24LC02BT-E/LT AEC-Q100 qualified, and for which stress grades?
Yes, the 24LC02BT-E/LT is AEC-Q100 qualified for Grade 1 (–40°C to +125°C), as confirmed in the DS20001709N datasheet. This qualification covers accelerated stress tests including temperature cycling, humidity bias, and high-temperature operating life - validating its suitability for automotive powertrain, chassis, and body electronics applications where long-term reliability under thermal extremes is mandatory.
24LC02BT-E/LT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- 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:
- SC-70-5
24LC02BT-E/LT FAQ
1.How can I place an order for 24LC02BT-E/LT through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC02BT-E/LT 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 24LC02BT-E/LT reliable?
The price and inventory of 24LC02BT-E/LT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC02BT-E/LT is usually 5 days.
3.What payment methods are accepted for 24LC02BT-E/LT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC02BT-E/LT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC02BT-E/LT?
24LC02BT-E/LT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC02BT-E/LT 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 24LC02BT-E/LT?
For technical support, including 24LC02BT-E/LT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC02BT-E/LT requirements.
6.How does Aetrix verify that 24LC02BT-E/LT is sourced from the original manufacturer or authorized distributors?
All 24LC02BT-E/LT 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 24LC02BT-E/LT meets industry standards.
7.What is the process for return or replacement of 24LC02BT-E/LT?
All 24LC02BT-E/LT units undergo pre-shipment inspection (PSI). If there is an issue with 24LC02BT-E/LT, 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 24LC02BT-E/LT part is unused and in its original packaging.
Return procedure for 24LC02BT-E/LT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24LC02BT-E/LT Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
