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Microchip Technology 24LC64FT-E/MNY
- Part No.:
- 24LC64FT-E/MNY
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
24LC64FT-E/MNY.pdf
- Description:
- IC EEPROM 64KBIT I2C 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,603
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Product details
Overview
24LC64FT-E/MNY from Microchip Technology Inc. is a 64 Kbit I²C-compatible serial EEPROM organized as 8K × 8-bit memory, operating from 2.5V to 5.5V with 400 kHz max clock frequency and automotive-grade temperature range (–40°C to +125°C). It features hardware write-protection for the upper 1/4 array (1800h–1FFFh), 32-byte page write buffer, and Schmitt-trigger inputs for noise immunity - deployed in engine control units, battery management systems, and industrial sensor calibration storage.
For engineers reviewing the 24LC64FT-E/MNY datasheet, 24LC64FT-E/MNY pinout, 24LC64FT-E/MNY application, or 24LC64FT-E/MNY equivalent, key selection considerations include its automotive temperature rating, quarter-array hardware write-protect capability, 1 μA standby current at +125°C, and compatibility with standard I²C master controllers requiring robust nonvolatile configuration storage.
Technical Context
The 24LC64FT-E/MNY implements a two-wire I²C slave interface with fixed 7-bit device address prefix '1010', three programmable chip-select bits (A2–A0), and R/W bit control. Its internal address pointer supports current-address, random, and sequential read modes, while page write operations are constrained to 32-byte boundaries without wrap-around across physical pages.
Write protection is sampled only at the Stop condition of each write command; tying WP high disables writes to addresses 1800h–1FFFh but permits full read access. The device uses self-timed erase/write cycles (5 ms typical), supports acknowledge polling for bus efficiency, and incorporates slope-controlled outputs to suppress ground bounce during SDA transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 64 Kbit (8K × 8-bit) - provides sufficient space for firmware configuration, calibration data, and fault logs in automotive ECUs. |
| VCC Range | 2.5V to 5.5V - compatible with 3.3V and 5V system rails, excluding sub-2.5V operation unlike AA/FC variants. |
| Max Clock Frequency | 400 kHz - supports standard-mode I²C timing; not rated for 1 MHz (reserved for 24FC64F). |
| Temperature Range | –40°C to +125°C (Automotive E-grade) - qualified for under-hood and powertrain applications per AEC-Q100 stress requirements. |
| Write Protection | Hardware-enabled for 1/4 array (1800h–1FFFh) via WP pin - prevents accidental overwrites of critical calibration constants during field updates. |
| Endurance & Retention | 1,000,000 write cycles / >200 years data retention - ensures long-term reliability in infrequent-write, mission-critical storage roles. |
| Standby Current | 5 μA max at +125°C - enables ultra-low-power sleep mode in always-on automotive modules. |
Pinout & Package
24LC64FT-E/MNY is housed in an 8-lead TDFN package (2 mm × 3 mm, 0.5 mm pitch) with wettable flanks, optimized for automated optical inspection and high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Chip Address Input | LSB of 3-bit slave address; hardwired to VSS or VCC to configure one of eight possible I²C addresses on shared bus. |
| A1 | Chip Address Input | Middle bit of slave address; determines device select when multiple 24LC64FT-E/MNY units share same I²C bus. |
| A2 | Chip Address Input | MSB of slave address; enables up to eight devices (512 Kbit total) on single I²C segment. |
| VSS | Ground Reference | Primary return path for all internal logic and I/O; requires low-impedance connection to system GND plane. |
| SDA | Serial Data I/O | Open-drain bidirectional line; requires external pull-up resistor (2 kΩ typical for 400 kHz); carries address, data, and ACK/NACK signals. |
| SCL | Serial Clock Input | Master-generated clock signal; synchronizes all data transfers; Schmitt-trigger input rejects noise below 5% VCC hysteresis. |
| WP | Write-Protect Control | Active-high enable for 1/4-array lock; sampled only at Stop condition - no effect if toggled mid-transfer. |
| VCC | Power Supply | 2.5V–5.5V supply input; decoupling capacitor (100 nF ceramic) required within 5 mm of pin for stable operation. |
Key Features
| Feature | Design Value |
|---|---|
| I²C Bus Compatibility | Fully compliant with Philips I²C specification (standard-mode), including Start/Stop detection, ACK/NACK protocol, and 7-bit addressing with R/W bit. |
| Page Write Buffer | 32-byte internal buffer enables burst writes without host intervention between bytes - reduces I²C transaction overhead by up to 97% vs. byte-write. |
| Noise Immunity | Schmitt-trigger inputs on SDA/SCL with 50 ns spike suppression and 0.05 VCC hysteresis - eliminates false triggering from EMI in automotive environments. |
| Low-Power Operation | 1 μA max standby current at +85°C and 5 μA at +125°C - extends battery life in always-on telematics and ADAS modules. |
| Robust Packaging | TDFN-8 (2×3 mm) with wettable flanks - supports automated AOI and meets IPC/JEDEC J-STD-020 moisture sensitivity level 3 (MSL3). |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
|
Use Scenario: Storing adaptive fuel trim values, misfire counters, and diagnostic trouble codes (DTCs) that persist across ignition cycles. IC Role / Device Role / Timing Role: Nonvolatile configuration storage with guaranteed write integrity during voltage brownouts and engine cranking events. Use Value: Hardware write-protect (1800h–1FFFh) safeguards factory-calibrated parameters from corruption during dealer reprogramming. |
Use Scenario: Retaining camera calibration offsets, radar sensor alignment data, and lane-departure warning thresholds across vehicle power-down events. IC Role / Device Role / Timing Role: Automotive-grade EEPROM providing deterministic 5 ms write-cycle timing for safety-critical parameter updates. Use Value: 1,000,000 endurance cycles ensure reliable logging over 15+ years of vehicle service life under frequent update conditions. |
| Battery Management System (BMS) | Industrial Motor Drive Controller |
|
Use Scenario: Recording cell voltage history, cycle count, and thermal derating profiles for lithium-ion battery packs in EVs and energy storage systems. IC Role / Device Role / Timing Role: High-reliability data logger interfaced directly to MCU I²C peripheral with minimal GPIO overhead. Use Value: –40°C to +125°C operation guarantees functionality during extreme ambient conditions encountered in under-hood BMS mounting locations. |
Use Scenario: Holding motor phase mapping tables, PID tuning coefficients, and encoder zero-point offsets in servo drives used in CNC and robotics. IC Role / Device Role / Timing Role: Configuration memory accessed during boot sequence and runtime parameter adjustment via HMI or fieldbus. Use Value: 32-byte page write capability allows atomic updates of multi-parameter sets without risk of partial writes during power loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24LC64F-I/MNY | Industrial-grade (–40°C to +85°C); identical electrical specs except temperature range and qualification testing. | Lacks AEC-Q100 automotive qualification; unsuitable for under-hood or safety-critical functions. | Select 24LC64F-I/MNY only for cost-sensitive industrial controls where extended temperature is not required. |
| AT24C64D-SSHM-T | Same 64 Kbit size, I²C interface, and 32-byte page; operates down to 1.7V; lacks hardware write-protect pin. | No dedicated WP pin - write protection must be implemented in software or external logic, increasing firmware complexity. | Choose AT24C64D-SSHM-T when lower-voltage operation (<2.5V) is needed and hardware write-protect is not mandatory. |
Compared with 24LC64F-I/MNY, the 24LC64FT-E/MNY adds automotive qualification and higher-temperature endurance, while AT24C64D-SSHM-T trades WP functionality for wider VCC range - making 24LC64FT-E/MNY the sole choice for AEC-Q100-compliant, hardware-protected EEPROM in harsh environments.
Availability
24LC64FT-E/MNY is available at Aetrix Electronics and suitable for automotive engine control, ADAS calibration storage, and industrial motor drive configuration requiring stable component supply across extended product lifecycles.
Supply support for 24LC64FT-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 leading provider of microcontrollers, analog components, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 24LC64F family was designed specifically for automotive and industrial applications demanding high reliability, extended temperature operation, and hardware-level data protection - targeting ECU, BMS, and sensor module designers.
FAQ
What is the maximum I²C clock frequency supported by the 24LC64FT-E/MNY?
The 24LC64FT-E/MNY supports a maximum clock frequency of 400 kHz under all valid VCC conditions (2.5V–5.5V). Unlike the 24FC64F variant, it is not rated for 1 MHz operation. This aligns with standard-mode I²C timing budgets and ensures compatibility with legacy automotive microcontrollers lacking fast-mode support.
Does the 24LC64FT-E/MNY have hardware write-protection, and how is it implemented?
Yes, the 24LC64FT-E/MNY includes a dedicated Write-Protect (WP) pin that, when tied to VCC, disables write operations to the upper 1/4 memory array (addresses 1800h–1FFFh). Read access remains fully functional. The WP state is sampled only at the Stop condition of each write command, ensuring deterministic protection behavior.
What package type is used for the 24LC64FT-E/MNY, and what are its key mechanical features?
The 24LC64FT-E/MNY uses an 8-lead TDFN package (2 mm × 3 mm, 0.5 mm pitch) with wettable flanks. This compact, surface-mount package supports automated optical inspection, meets MSL3 per J-STD-020, and provides thermal performance suitable for under-hood automotive placement.
How many devices can be connected on the same I²C bus using the 24LC64FT-E/MNY?
Up to eight 24LC64FT-E/MNY devices can share a single I²C bus using the three hardware-configurable address pins (A0, A1, A2). Each device is assigned a unique 7-bit slave address (1010xxxR/W), enabling a total addressable capacity of 512 Kbit without additional address decoding logic.
What is the write endurance and data retention specification for the 24LC64FT-E/MNY?
The 24LC64FT-E/MNY guarantees a minimum of 1,000,000 write/erase cycles and greater than 200 years of data retention at +85°C. These specifications are validated per AEC-Q100 stress testing and apply across the full automotive temperature range (–40°C to +125°C).
24LC64FT-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:
- 64Kbit
- Memory Organization:
- 8K 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)
24LC64FT-E/MNY FAQ
1.How can I place an order for 24LC64FT-E/MNY through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC64FT-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 24LC64FT-E/MNY reliable?
The price and inventory of 24LC64FT-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 24LC64FT-E/MNY is usually 5 days.
3.What payment methods are accepted for 24LC64FT-E/MNY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC64FT-E/MNY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC64FT-E/MNY?
24LC64FT-E/MNY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC64FT-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 24LC64FT-E/MNY?
For technical support, including 24LC64FT-E/MNY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC64FT-E/MNY requirements.
6.How does Aetrix verify that 24LC64FT-E/MNY is sourced from the original manufacturer or authorized distributors?
All 24LC64FT-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 24LC64FT-E/MNY meets industry standards.
7.What is the process for return or replacement of 24LC64FT-E/MNY?
All 24LC64FT-E/MNY units undergo pre-shipment inspection (PSI). If there is an issue with 24LC64FT-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 24LC64FT-E/MNY part is unused and in its original packaging.
Return procedure for 24LC64FT-E/MNY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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