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Microchip Technology 24LC02BT-E/SN
- Part No.:
- 24LC02BT-E/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
24LC02BT-E/SN.pdf
- Description:
- IC EEPROM 2KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:6,480
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Product details
Overview
24LC02BT-E/SN from Microchip Technology Inc. is a 2-Kbit I²C-compatible serial EEPROM organized as 256 × 8-bit memory with hardware write-protection, 400 kHz max clock frequency, and operation from 2.5V to 5.5V. It features 8-byte page write buffer, Schmitt-trigger inputs, and 1 µA standby current (I-temp), used for storing calibration data, configuration settings, and device identifiers in embedded control modules.
For engineers reviewing the 24LC02BT-E/SN datasheet, 24LC02BT-E/SN pinout, 24LC02BT-E/SN application, or 24LC02BT-E/SN equivalent, this page delivers verified electrical specs, package mapping to SOIC-8 (SN), I²C timing compliance, endurance (1M cycles), and real-world use context - all confirmed against Microchip DS20001709N.
Technical Context
The 24LC02BT-E/SN 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 resets on each new word address command.
It uses CMOS EEPROM array with on-chip HV generator for erase/write, integrated page latches for 8-byte buffering, and noise-suppression circuitry including Schmitt-trigger inputs and input filter spike suppression (50 ns). Write protection is controlled solely by the WP pin state - tied to VCC for full-array lockout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Kbit (256 × 8-bit), sufficient for firmware revision tags, MAC addresses, or sensor calibration coefficients |
| Interface | I²C-compatible two-wire bus, supports standard-mode (100 kHz), fast-mode (400 kHz), and requires external pull-up resistors on SDA/SCL |
| VCC Range | 2.5V to 5.5V - mandates minimum 2.5V supply; not operational below 2.5V unlike 24AA02/24FC02 variants |
| Write Cycle Time | 5 ms maximum per byte or page - defines minimum interval between successive write commands |
| Endurance | 1,000,000 erase/write cycles - enables long-term field updates in industrial logging applications |
| Data Retention | Greater than 200 years at +25°C - ensures nonvolatile storage integrity across product lifecycle |
| Temperature Range | -40°C to +125°C (Extended grade E) - qualified for under-hood automotive and high-temp industrial environments |
Pinout & Package
24LC02BT-E/SN is supplied in 8-lead SOIC (SN) package per Microchip drawing C04-057-SN Rev G. Pin 1 is marked with a beveled corner or dot; A0–A2 are no-connect pins and may be left floating or tied to VSS/VCC without functional impact.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | No-connect | Internally unconnected; no effect on addressing or operation |
| A1 | No-connect | Internally unconnected; no effect on addressing or operation |
| A2 | No-connect | Internally unconnected; no effect on addressing or operation |
| VSS | Ground reference | Return path for all internal circuits; must be low-impedance connection |
| SDA | Serial Data I/O | Open-drain bidirectional line requiring external pull-up; carries address, data, and ACK/NACK signals |
| SCL | Serial Clock input | Master-generated clock synchronizing all I²C transfers; edge-sensitive timing critical for THIGH/TLOW compliance |
| WP | Write-Protect control | Logic-high (VCC) disables all writes; logic-low (VSS) enables full read/write access |
| VCC | Power supply | Must be stable 2.5V–5.5V; decoupling capacitor (0.1 µF) recommended near pin |
Key Features
| Feature | Design Value |
|---|---|
| Hardware Write-Protection | Single-pin (WP) global lockout prevents accidental overwrites of critical configuration data |
| Schmitt Trigger Inputs | 0.05 VCC hysteresis on SDA/SCL eliminates false triggering from bus noise in electrically noisy environments |
| Page Write Buffer | 8-byte internal latch enables burst programming of contiguous memory locations with single Stop condition |
| Self-Timed Erase/Write | No external timing control needed; internal cycle completes in ≤5 ms, freeing host CPU during write |
| ESD Protection | Exceeds 4 kV HBM - enhances robustness during board handling and system integration |
Applications
| Industrial Sensor Calibration | Automotive Body Control Module |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain values for temperature, pressure, and humidity sensors in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed at power-on reset via I²C; no timing-critical interaction during runtime. Use Value: Enables field-replaceable sensor units without reprogramming host MCU firmware - calibration persists across power cycles and firmware updates. |
Use Scenario: Retaining seat position memory, mirror angle presets, and door lock configuration in 12V automotive body electronics. IC Role / Device Role / Timing Role: I²C slave storing user preferences; accessed only during wake-up or button-press events, not time-critical real-time control. Use Value: Supports AEC-Q100 Grade 1 qualification and 125°C operation - survives under-dash thermal environments while maintaining data integrity. |
| Medical Device Configuration | Smart Energy Metering |
Use Scenario: Holding regulatory-compliant device ID, serial number, and usage counters in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure, tamper-resistant parameter store; WP pin hardwired to VCC to prevent unauthorized modification. Use Value: Meets >200-year data retention and 1M-cycle endurance - satisfies FDA design history file requirements for lifetime traceability. |
Use Scenario: Recording tariff schedules, meter firmware version, and tamper-event logs in ANSI C12.20-certified electricity meters. IC Role / Device Role / Timing Role: Low-power EEPROM accessed infrequently via isolated I²C bus; standby current ≤1 µA minimizes battery drain in backup mode. Use Value: Extended temperature range (-40°C to +125°C) ensures reliable operation inside sealed outdoor meter enclosures exposed to desert or arctic conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA02T-I/SN | Lower VCC min (1.7V), same 400 kHz max, Industrial temp only (-40°C to +85°C) | Not rated for extended temperature; unsuitable for under-hood or high-ambient industrial use | Select when system operates ≥1.7V and does not require >85°C operation - reduces BOM cost where thermal margin exists |
| 24FC02T-E/SN | 1 MHz I²C support, 1.7V–5.5V VCC, same E-temp rating, but higher standby current (3 µA vs 1 µA) | Enables faster configuration loading in bandwidth-constrained systems; trades off ultra-low sleep power | Choose when host controller supports 1 MHz I²C and faster boot-time EEPROM reads are prioritized over minimal quiescent current |
Compared with 24AA02T-I/SN and 24FC02T-E/SN, the 24LC02BT-E/SN uniquely balances extended temperature capability, strict 2.5V+ supply compatibility, and lowest standby current - making it optimal for thermally demanding, battery-backed, or automotive-grade designs where voltage headroom is constrained.
Availability
24LC02BT-E/SN is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive body control modules, medical device configuration, and smart energy metering requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 24LC02BT-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 components, and memory solutions, headquartered in Chandler, Arizona, with global manufacturing and support infrastructure.
The 24LC02B family was designed specifically for cost-sensitive, space-constrained embedded systems requiring reliable nonvolatile storage with I²C simplicity, low power, and automotive-grade reliability - targeting industrial controls, automotive subsystems, and consumer electronics.
FAQ
What is the minimum operating voltage for 24LC02BT-E/SN?
The 24LC02BT-E/SN requires a minimum VCC of 2.5V and operates up to 5.5V. Unlike the 24AA02 or 24FC02 variants, it is not specified for operation below 2.5V - attempting to power it at 1.8V will result in undefined behavior or failure to respond on the I²C bus. This is explicitly defined in Table 1-1 of DS20001709N.
Does 24LC02BT-E/SN support 1 MHz I²C communication?
No, the 24LC02BT-E/SN supports up to 400 kHz I²C clock frequency under all valid VCC conditions (2.5V–5.5V). The 1 MHz capability is exclusive to the 24FC02 variant. Attempting 1 MHz operation with 24LC02BT-E/SN will violate AC timing parameters such as THIGH (min 600 ns) and may cause communication failures or data corruption.
How is the device address configured for 24LC02BT-E/SN?
The 24LC02BT-E/SN uses a fixed 4-bit control code (1010) followed by three "don't care" bits (A2, A1, A0), resulting in a 7-bit client address of 1010xxx. Since A0–A2 are internally unconnected, all devices share the same base address - multiple 24LC02BT-E/SN units cannot coexist on the same I²C bus without external multiplexing or address translation.
What happens when the WP pin is left floating on 24LC02BT-E/SN?
The WP pin on 24LC02BT-E/SN has no internal pull-up or pull-down. If left floating, its logic state is indeterminate, potentially causing intermittent write-enable or write-protect behavior. Microchip's datasheet explicitly recommends tying WP to either VSS (for full read/write access) or VCC (for full write protection) - never leaving it unconnected in production designs.
Is 24LC02BT-E/SN AEC-Q100 qualified?
Yes, the 24LC02BT-E/SN is AEC-Q100 qualified for Automotive Grade 1 (–40°C to +125°C), as confirmed in the "Automotive AEC-Q100 Qualified" feature list on page 1 of DS20001709N. This qualification covers stress testing including HTOL, TCT, and ESD - validating suitability for body electronics, infotainment, and ADAS subsystems.
24LC02BT-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:
- 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-SOIC
24LC02BT-E/SN FAQ
1.How can I place an order for 24LC02BT-E/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC02BT-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 24LC02BT-E/SN reliable?
The price and inventory of 24LC02BT-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 24LC02BT-E/SN is usually 5 days.
3.What payment methods are accepted for 24LC02BT-E/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC02BT-E/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC02BT-E/SN?
24LC02BT-E/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC02BT-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 24LC02BT-E/SN?
For technical support, including 24LC02BT-E/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC02BT-E/SN requirements.
6.How does Aetrix verify that 24LC02BT-E/SN is sourced from the original manufacturer or authorized distributors?
All 24LC02BT-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 24LC02BT-E/SN meets industry standards.
7.What is the process for return or replacement of 24LC02BT-E/SN?
All 24LC02BT-E/SN units undergo pre-shipment inspection (PSI). If there is an issue with 24LC02BT-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 24LC02BT-E/SN part is unused and in its original packaging.
Return procedure for 24LC02BT-E/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24LC02BT-E/SN Tags
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AT24C02C-XHM-T
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