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Microchip Technology 24AA025T-I/SN
- Part No.:
- 24AA025T-I/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
24AA025T-I/SN.pdf
- Description:
- IC EEPROM 2KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:9,706
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Product details
Overview
24AA025T-I/SN from Microchip Technology Inc. is a 2 Kbit I²C-compatible serial EEPROM organized as 256 × 8-bit memory, operating from 1.7V to 5.5V with industrial temperature range (–40°C to +85°C), 400 kHz max clock speed, and 16-byte page write buffer. It serves as nonvolatile configuration storage in embedded controllers, sensor nodes, and power management ICs.
For engineers reviewing the 24AA025T-I/SN datasheet, 24AA025T-I/SN pinout, 24AA025T-I/SN application, or 24AA025T-I/SN equivalent, key selection criteria include its SOT-23-6 package, absence of hardware write-protect (WP) pin, 1 μA standby current, and compatibility with multi-device I²C bus topologies up to eight devices.
Technical Context
The 24AA025T-I/SN implements a standard two-wire I²C interface with Schmitt-trigger inputs and slope-controlled outputs to suppress noise and eliminate ground bounce. Its internal address pointer supports current-address, random, and sequential read modes, and it uses self-timed erase/write cycles with automatic page-buffer management.
Unlike the 24AA024 variant, the 24AA025T-I/SN omits the WP pin-confirmed by datasheet Note "WP pin is not internally connected on the 24XX025" and Pin Function Table showing WP as unconnected in SOT-23. Addressing uses A0/A1 pins only (A2 not bonded), enabling up to four devices per bus in this package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 2 Kbit (256 × 8-bit), sufficient for MAC addresses, calibration data, or boot configuration in space-constrained designs |
| Supply voltage | 1.7V to 5.5V - enables direct interfacing with 1.8V, 3.3V, and 5V microcontrollers without level shifting |
| Max clock frequency | 400 kHz at VCC ≥ 1.8V - supports high-throughput configuration writes in real-time systems |
| Page write buffer | 16 bytes - reduces I²C transaction count for bulk writes, improving bus efficiency and firmware simplicity |
| Endurance & retention | 1 million erase/write cycles and >200 years data retention - validated for long-life industrial deployments |
| Standby current | 1 μA typical - critical for battery-powered IoT endpoints where quiescent power dominates lifetime |
| Operating temperature | –40°C to +85°C (Industrial grade) - qualified for use in automotive body electronics and industrial control modules |
Pinout & Package
24AA025T-I/SN is housed in a Pb-free, RoHS-compliant 6-lead SOT-23 package (3.0 mm × 1.7 mm × 1.1 mm). Pin 1 is marked by laser dot; pin 1 = SCL, pin 2 = VSS, pin 3 = SDA, pin 4 = A1, pin 5 = A0, pin 6 = VCC. The WP pin is not internally connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SCL | Serial Clock input | Master-generated clock synchronizing all I²C transfers; requires external pull-up; Schmitt-triggered for noise immunity |
| VSS | Ground reference | Return path for all internal logic and I/O; must be low-impedance to support stable 1 μA standby operation |
| SDA | Bidirectional data I/O | Open-drain output requiring external pull-up; handles address, command, and data transfer in both directions |
| A1 | Device address bit 1 | Configures slave address (1010xx0); tied to VCC/VSS to select one of four possible addresses on shared bus |
| A0 | Device address bit 0 | LSB of chip-select bits; enables up to four 24AA025T-I/SN devices on same I²C bus without address conflict |
| VCC | Power supply | Accepts 1.7–5.5V; internal voltage detector disables write logic below 1.5V to prevent corruption during brownout |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation | 1.7V minimum VCC enables integration into ultra-low-power 1.8V systems without regulator overhead |
| Noise-immune I/O | Schmitt-trigger inputs + 50 ns spike suppression eliminate need for external RC filtering on noisy PCBs |
| Page write capability | 16-byte buffer allows single I²C transaction to store full calibration set or network ID, reducing firmware latency |
| Hardware address flexibility | A0/A1 pins support four unique I²C addresses (1010000–1010011), simplifying multi-sensor node design |
| Robust write cycle | Self-timed 5 ms max write ensures deterministic timing; ACK polling allows host to resume bus activity immediately after completion |
Applications
| Smart Sensor Node | Industrial PLC Module |
|---|---|
|
Use Scenario: Storing factory-calibrated sensor offsets and linearization coefficients in a wireless temperature/humidity node. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed at power-up and during field recalibration via I²C. Use Value: Enables plug-and-play deployment with pre-loaded calibration; 200-year retention avoids recalibration over product lifetime. |
Use Scenario: Holding user-defined I/O mapping tables and communication protocol parameters in a modular PLC backplane slot. IC Role / Device Role / Timing Role: Persistent parameter storage updated infrequently but read on every controller boot and runtime reconfiguration. Use Value: Eliminates need for external programming tools; 1 μA standby current prevents battery drain in backup-powered modules. |
| Automotive Body Controller | Medical Wearable |
|
Use Scenario: Saving seat position memory, mirror settings, and lighting profiles in a vehicle door module. IC Role / Device Role / Timing Role: I²C slave storing user preferences; accessed only during wake-up or button-press events. Use Value: Industrial-grade –40°C to +85°C rating ensures reliability across cabin temperature extremes; 400 kHz speed enables fast recall. |
Use Scenario: Retaining patient-specific therapy parameters and usage history in a disposable glucose monitor. IC Role / Device Role / Timing Role: Low-power configuration and event-log storage interfaced to an ARM Cortex-M0+ MCU. Use Value: 1.7V operation extends battery life in coin-cell-powered devices; SOT-23-6 footprint minimizes PCB area in compact wearables. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24LC025-I/SN | Same 2 Kbit capacity and SOT-23-6 package, but rated for automotive temp (–40°C to +125°C) and 2.5–5.5V operation | Required where extended temperature qualification or higher VCC min is mandated (e.g., under-hood ECUs) | Select 24LC025-I/SN only if automotive AEC-Q100 compliance or 2.5V minimum supply is required; otherwise 24AA025T-I/SN offers broader voltage range |
| AT24C02D-SSHM-T | 2 Kbit I²C EEPROM in SOIC-8; supports 1.7–5.5V, 400 kHz, but lacks SOT-23-6 footprint and has different pinout (WP present) | Suitable when board layout allows SOIC-8 and hardware write-protection is desired | Choose AT24C02D-SSHM-T only if SOIC-8 is acceptable and WP functionality is needed; not drop-in due to package and pinout mismatch |
Compared with 24LC025-I/SN, the 24AA025T-I/SN provides wider voltage range (1.7V vs. 2.5V min) for low-power systems, while AT24C02D-SSHM-T offers write protection but requires PCB redesign - making 24AA025T-I/SN optimal for space- and voltage-constrained industrial designs.
Availability
24AA025T-I/SN is available at Aetrix Electronics and suitable for smart sensor nodes, industrial PLC modules, and automotive body controllers requiring stable component supply, long-term obsolescence planning, and traceable sourcing.
Supply support for 24AA025T-I/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 24AA025T-I/SN belongs to Microchip's 24AA/24LC serial EEPROM family, designed specifically for reliable, low-power nonvolatile data storage in cost-sensitive, space-constrained embedded systems.
FAQ
What is the maximum I²C clock frequency supported by the 24AA025T-I/SN?
The 24AA025T-I/SN supports up to 400 kHz I²C clock frequency when VCC is 1.8V or higher. At VCC < 1.8V, the maximum clock rate drops to 100 kHz per DS21210N-page 3, Table 1-2. This dual-speed capability ensures interoperability across diverse voltage domains while maintaining timing compliance.
Does the 24AA025T-I/SN have a hardware write-protect (WP) pin?
No, the 24AA025T-I/SN does not include a functional WP pin. As confirmed in the datasheet Section 2.4 and Pin Function Table, the WP pin is not internally connected on any 24XX025 device, including the 24AA025T-I/SN. Write protection must be implemented in software or via external logic.
How many 24AA025T-I/SN devices can be connected on the same I²C bus?
Up to four 24AA025T-I/SN devices can share one I²C bus. Because the SOT-23 package lacks the A2 pin, only A0 and A1 are available for chip-select addressing, yielding four unique 7-bit slave addresses (1010000 to 1010011) per DS21210N-page 5 and page 7.
What is the page write buffer size of the 24AA025T-I/SN?
The 24AA025T-I/SN features a 16-byte page write buffer, allowing up to 16 bytes to be written in a single I²C transaction before the internal self-timed write cycle begins. This reduces bus overhead and improves firmware efficiency compared to byte-write-only EEPROMs.
Is the 24AA025T-I/SN compatible with 1.8V microcontrollers?
Yes, the 24AA025T-I/SN is fully compatible with 1.8V systems: its 1.7V to 5.5V supply range includes 1.8V, and its I²C interface meets standard voltage thresholds (VIH = 0.7×VCC, VIL = 0.3×VCC) at that rail. No level translation is required when interfacing with 1.8V MCUs.
24AA025T-I/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:
- 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:
- 1.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
24AA025T-I/SN FAQ
1.How can I place an order for 24AA025T-I/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 24AA025T-I/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 24AA025T-I/SN reliable?
The price and inventory of 24AA025T-I/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24AA025T-I/SN is usually 5 days.
3.What payment methods are accepted for 24AA025T-I/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24AA025T-I/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24AA025T-I/SN?
24AA025T-I/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24AA025T-I/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 24AA025T-I/SN?
For technical support, including 24AA025T-I/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24AA025T-I/SN requirements.
6.How does Aetrix verify that 24AA025T-I/SN is sourced from the original manufacturer or authorized distributors?
All 24AA025T-I/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 24AA025T-I/SN meets industry standards.
7.What is the process for return or replacement of 24AA025T-I/SN?
All 24AA025T-I/SN units undergo pre-shipment inspection (PSI). If there is an issue with 24AA025T-I/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 24AA025T-I/SN part is unused and in its original packaging.
Return procedure for 24AA025T-I/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24AA025T-I/SN Tags
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