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Microchip Technology 24AA64FT-I/MNY
- Part No.:
- 24AA64FT-I/MNY
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
24AA64FT-I/MNY.pdf
- Description:
- IC EEPROM 64KBIT I2C 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,325
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Product details
Overview
24AA64FT-I/MNY from Microchip Technology Inc. is a 64 Kbit I²C-compatible serial EEPROM organized as 8K × 8-bit, operating from 1.7V to 5.5V with industrial temperature range (–40°C to +85°C). It features 32-byte page write buffer, hardware write-protect for upper 1/4 array (1800h–1FFFh), and Schmitt-trigger inputs for noise immunity. Used in low-power embedded systems for parameter storage, calibration data retention, and firmware configuration.
For engineers reviewing the 24AA64FT-I/MNY datasheet, 24AA64FT-I/MNY pinout, 24AA64FT-I/MNY application, or 24AA64FT-I/MNY equivalent, key selection criteria include VCC min (1.7 V), I²C clock compatibility (100 kHz / 400 kHz), standby current (1 µA max), and TDFN-8 package footprint with exposed pad for thermal performance.
Technical Context
The 24AA64FT-I/MNY implements a standard two-wire I²C interface with slave address format '1010 A2 A1 A0 R/W', supporting up to eight devices on one bus via hardwired A0–A2 pins. Its internal address counter enables sequential, random, and current-address read modes, while acknowledge polling allows host synchronization during self-timed 5 ms write cycles.
Write protection is implemented via dedicated WP pin sampled at Stop condition, disabling writes only to addresses 1800h–1FFFh when pulled high. The device uses CMOS EEPROM cell technology with >1 million erase/write cycles and >200 years data retention, validated under industrial temperature stress (–40°C to +85°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 64 Kbit (8K × 8-bit) - supports full system configuration storage without external memory expansion |
| VCC range | 1.7 V to 5.5 V - enables direct interface with 1.8 V, 2.5 V, 3.3 V, and 5 V logic domains |
| I²C clock max | 400 kHz (at VCC ≥ 2.5 V) - delivers 40 KB/s effective throughput for rapid parameter updates |
| Page write size | 32 bytes - minimizes transaction overhead for burst configuration writes |
| Standby current | 1 µA max (I-temp) - extends battery life in always-on IoT sensor nodes and portable medical devices |
| Data retention | >200 years - ensures long-term reliability in infrastructure monitoring and automotive ECUs |
| Endurance | 1,000,000 write cycles - supports frequent logging in data acquisition and telemetry applications |
Pinout & Package
24AA64FT-I/MNY is housed in an 8-lead TDFN package (3 mm × 3 mm, 0.75 mm height) with exposed thermal pad (EP), optimized for space-constrained PCB layouts and improved thermal dissipation in sealed enclosures.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Chip address input | Hardwired to VSS or VCC to set LSB of 7-bit I²C slave address (1010xxx) |
| A1 | Chip address input | Hardwired to VSS or VCC to set middle bit of I²C slave address |
| A2 | Chip address input | Hardwired to VSS or VCC to set MSB of I²C slave address - enables up to 8 devices per bus |
| VSS | Ground reference | Return path for all internal circuitry; must be connected to system ground plane |
| SDA | Serial data I/O | Open-drain bidirectional line requiring external pull-up (2 kΩ for 400 kHz); carries address, command, and data |
| SCL | Serial clock input | Master-generated clock synchronizing all I²C transactions; Schmitt-triggered for noise rejection |
| WP | Write-protect control | Pulled high to disable writes to 1800h–1FFFh; no effect on reads or lower 48 Kbit |
| VCC | Power supply | Single 1.7–5.5 V rail powers EEPROM core and I/O - eliminates need for level shifters |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation | Functional down to 1.7 V enables direct integration with ultra-low-power microcontrollers (e.g., PIC12LF, MSP430FR) |
| Schmitt-trigger inputs | Input hysteresis ≥0.05 VCC suppresses EMI-induced glitches on SDA/SCL in noisy industrial environments |
| Output slope control | Controlled rise/fall times eliminate ground bounce during fast I²C transitions, improving signal integrity |
| Hardware write-protect | Dedicated WP pin provides non-volatile, pin-level security for critical calibration or security keys |
| Pb-free & RoHS | TDFN-8 package meets IPC/JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) for standard reflow |
Applications
| Smart Energy Metering | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Storing tariff schedules, meter calibration constants, and tamper-event logs across power outages. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding time-critical energy parameters with guaranteed retention >200 years. Use Value: Eliminates supercapacitor backup circuitry; reduces BOM cost by 12% vs. FRAM-based alternatives at same density. | Use Scenario: Retaining module identification, channel scaling factors, and diagnostic history in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: I²C slave storing factory-programmed analog input calibration coefficients accessed at boot. Use Value: Enables field-replaceable I/O modules without recalibration; supports 1M-cycle endurance for daily firmware update logging. |
| Automotive Body Control Unit | Medical Infusion Pump |
Use Scenario: Saving seat/mirror position memory, lighting profiles, and fault codes in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Low-quiescent-current EEPROM interfacing directly to 3.3 V CAN microcontroller I²C port. Use Value: 1 µA standby current extends battery drain interval to >10 years; 1.7 V operation survives cold-crank brownouts. | Use Scenario: Storing drug library parameters, dose limits, and usage audit trails compliant with FDA 21 CFR Part 11. IC Role / Device Role / Timing Role: Secure, write-protected storage for regulatory-critical infusion parameters with hardware-enforced access control. Use Value: WP pin prevents accidental overwrites of safety-critical settings; >200-year retention satisfies long-life medical device requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24LC64FT-I/MNY | Requires minimum 2.5 V VCC; identical pinout, timing, and memory map | Not suitable for 1.8 V systems; otherwise drop-in compatible in 3.3 V/5 V designs | Select when operating voltage is guaranteed ≥2.5 V and automotive qualification is unnecessary |
| AT24C64D-MAHM-T | Same 64 Kbit density, 1.7–5.5 V, but uses different write-protection scheme (software-configurable block lock) | Lacks hardware WP pin; requires firmware coordination for secure write control | Prefer when flexible, software-defined protection zones are needed over fixed 1/4-array hardware lock |
Compared with 24LC64FT-I/MNY, the 24AA64FT-I/MNY enables 1.7 V operation critical for battery-backed systems, while AT24C64D-MAHM-T trades hardware write-protect simplicity for programmable lock granularity-making 24AA64FT-I/MNY optimal for cost-sensitive, low-voltage industrial controls requiring deterministic security.
Availability
24AA64FT-I/MNY is available at Aetrix Electronics and suitable for smart metering, industrial PLCs, automotive body electronics, and medical infusion pumps requiring stable component supply across extended product lifecycles.
Supply support for 24AA64FT-I/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 24AA64F family was designed specifically for ultra-low-power, space-constrained embedded systems requiring reliable nonvolatile storage with minimal external components and robust noise immunity.
FAQ
What is the minimum operating voltage for the 24AA64FT-I/MNY?
The 24AA64FT-I/MNY operates down to 1.7 V, enabling direct interface with 1.8 V logic families and extending runtime in coin-cell or energy-harvesting applications. This is confirmed in the Device Selection Table (DS22154B-page 1) and Electrical Characteristics section, where VCC min is specified as 1.7 V for the 24AA64F variant. Operation below this voltage risks data corruption or communication failure.
Does the 24AA64FT-I/MNY support 1 MHz I²C clock speed?
No, the 24AA64FT-I/MNY supports up to 400 kHz I²C clock frequency at VCC ≥ 2.5 V, and 100 kHz when VCC < 2.5 V. The 1 MHz capability is exclusive to the 24FC64F variant, as clearly differentiated in the Device Selection Table (DS22154B-page 1, Note 2). Using 1 MHz with 24AA64FT-I/MNY will result in timing violations and communication errors.
How does the write-protect function work on the 24AA64FT-I/MNY?
The 24AA64FT-I/MNY uses a dedicated WP pin that, when tied to VCC, disables write operations only to memory addresses 1800h–1FFFh (upper 16 Kbit). Reads remain fully functional across the entire array. The WP state is sampled at the Stop condition of each write command, as documented in Section 6.3 and Figure 6-1 of DS22154B. This hardware lock requires no firmware overhead and is immune to software faults.
What package type is used for the 24AA64FT-I/MNY?
The 24AA64FT-I/MNY uses an 8-lead TDFN (Thin Dual Flat No-lead) package measuring 3 mm × 3 mm with 0.75 mm height and an exposed thermal pad (EP). This is confirmed in the Package Types diagram (DS22154B-page 1) and Packaging Information section (DS22154B-page 13–14), where "TDFN" is explicitly listed for the 24AA64F series and the marking code "AT1" corresponds to TDFN-8 I-temp devices.
Can multiple 24AA64FT-I/MNY devices share the same I²C bus?
Yes, up to eight 24AA64FT-I/MNY devices can operate on a single I²C bus using unique combinations of A0, A1, and A2 address pins. Each device's 7-bit slave address is formed as '1010 A2 A1 A0', allowing hardware-selectable addressing without software configuration. This cascading capability is explicitly stated in the Features list and Functional Description (DS22154B-page 1 and 5), and applies to all packages except SOT-23 (which lacks address pins).
24AA64FT-I/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:
- 1.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN (2x3)
24AA64FT-I/MNY FAQ
1.How can I place an order for 24AA64FT-I/MNY through Aetrix?
Please submit a Request for Quotation (RFQ) for 24AA64FT-I/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 24AA64FT-I/MNY reliable?
The price and inventory of 24AA64FT-I/MNY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24AA64FT-I/MNY is usually 5 days.
3.What payment methods are accepted for 24AA64FT-I/MNY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24AA64FT-I/MNY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24AA64FT-I/MNY?
24AA64FT-I/MNY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24AA64FT-I/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 24AA64FT-I/MNY?
For technical support, including 24AA64FT-I/MNY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24AA64FT-I/MNY requirements.
6.How does Aetrix verify that 24AA64FT-I/MNY is sourced from the original manufacturer or authorized distributors?
All 24AA64FT-I/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 24AA64FT-I/MNY meets industry standards.
7.What is the process for return or replacement of 24AA64FT-I/MNY?
All 24AA64FT-I/MNY units undergo pre-shipment inspection (PSI). If there is an issue with 24AA64FT-I/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 24AA64FT-I/MNY part is unused and in its original packaging.
Return procedure for 24AA64FT-I/MNY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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