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Microchip Technology 24AA08T/SN
- Part No.:
- 24AA08T/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
24AA08T/SN.pdf
- Description:
- IC EEPROM 8KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,168
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Product details
Overview
24AA08T/SN from Microchip Technology Inc. is an 8-Kbit I²C-compatible serial EEPROM organized as four 256 × 8-bit blocks, operating from 1.7V to 5.5V with 400 kHz max clock frequency (100 kHz below 2.5V), 16-byte page write buffer, and hardware write-protect via WP pin. It delivers 1 µA standby current and supports industrial temperature range (–40°C to +85°C) in 8-lead SOIC (SN) package for embedded system configuration storage.
For engineers reviewing the 24AA08T/SN datasheet, 24AA08T/SN pinout, 24AA08T/SN application, or 24AA08T/SN equivalent, key selection criteria include low-voltage operation down to 1.7V, I²C bus compatibility with Schmitt-trigger inputs and slope-controlled outputs, page write timing ≤5 ms, endurance of 1 million cycles, and data retention exceeding 200 years.
Technical Context
The 24AA08T/SN implements a two-wire I²C interface with fixed 4-bit device code '1010', block-select addressing (B1/B0 bits), and R/W bit control. Its internal architecture includes a 16-byte page latch, HV generator for EEPROM programming, and memory control logic managing address pointer increment and self-timed erase/write cycles.
It uses open-drain SDA/SCL with external pull-up resistors (10 kΩ typical at 100 kHz), supports ACK polling to detect write completion, and incorporates Schmitt-trigger inputs plus input filtering (≤50 ns spike suppression) for noise immunity on electrically noisy buses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 × 8), organized as four 256-word blocks for segmented access control |
| VCC Range | 1.7V to 5.5V - enables direct interfacing with 1.8V/3.3V/5V microcontrollers without level shifters |
| Max Clock Frequency | 400 kHz (≥2.5V), 100 kHz (<2.5V) - defines maximum I²C bus throughput and timing margin requirements |
| Page Write Buffer | 16 bytes - reduces write transaction overhead by batching up to 16 sequential bytes per Stop condition |
| Write Cycle Time | ≤5 ms - determines minimum delay before next I²C command or ACK polling response |
| Endurance | 1,000,000 erase/write cycles - supports frequent calibration or logging updates over product lifetime |
| Data Retention | >200 years - ensures long-term reliability for firmware configuration or calibration data storage |
Pinout & Package
24AA08T/SN is supplied in 8-lead narrow SOIC (SN) package per Microchip drawing C04-057-SN Rev F, with 1.27 mm pitch, 3.90 mm body width, and exposed pad not present (unlike DFN/TDFN variants).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSS | Ground reference | Return path for all internal circuitry; must be connected to system GND with low-impedance trace |
| WP | Hardware write-protect input | Tied to VSS for full read/write access; tied to VCC to disable all writes while preserving read functionality |
| SCL | Serial clock input | Asynchronous master-generated clock synchronizing all I²C transfers; requires external pull-up resistor |
| SDA | Serial data bidirectional I/O | Open-drain line shared across I²C bus; requires external pull-up and supports multi-master arbitration |
| VCC | Power supply | Supplies core logic and EEPROM array; bypass capacitor (0.1 µF) recommended near pin |
| A0, A1, A2 | No-connect (NC) | Internally unconnected; may be left floating or tied to VSS/VCC without functional impact |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation (1.7V–5.5V) | Enables direct integration into battery-powered or mixed-voltage systems without regulator overhead |
| Schmitt-trigger inputs on SDA/SCL | Rejects bus noise up to 5% VCC hysteresis, improving robustness in EMI-prone industrial environments |
| Output slope control | Prevents ground bounce during fast transitions, eliminating signal integrity issues on shared PCB return paths |
| Hardware write-protection (WP pin) | Provides tamper-resistant configuration lock without software intervention or firmware dependency |
| 16-byte page write buffer | Reduces I²C transaction count by 16× versus byte-write mode, lowering bus occupancy and host CPU load |
Applications
| Industrial Sensor Calibration Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing factory-calibrated sensor offset/gain coefficients and linearization tables in programmable logic controllers and RTUs. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding persistent calibration data accessed at power-up and during field recalibration. Use Value: Eliminates need for external calibration EEPROM or MCU flash wear-leveling routines; retains data >200 years without backup power. | Use Scenario: Holding user-selected therapy parameters, device ID, and audit log metadata in portable infusion pumps and diagnostic monitors. IC Role / Device Role / Timing Role: Secure, write-protected parameter store ensuring regulatory-compliant data integrity and revision traceability. Use Value: WP pin enables hardware-enforced write-lock during clinical operation, preventing accidental parameter corruption. |
| Automotive Body Control Module NVM | Consumer Appliance Settings Retention |
Use Scenario: Saving seat/mirror position presets, lighting profiles, and door lock configurations in AEC-Q100-qualified BCMs. IC Role / Device Role / Timing Role: I²C-connected nonvolatile memory supporting frequent read/write during vehicle personalization and diagnostics. Use Value: 1M-cycle endurance and –40°C to +85°C operation ensure reliable performance across automotive lifecycle requirements. | Use Scenario: Retaining user preferences (temperature setpoints, cycle selections, language) across power cycles in smart refrigerators and washing machines. IC Role / Device Role / Timing Role: Low-power configuration memory interfaced directly to 3.3V microcontroller I²C peripheral. Use Value: 1 µA standby current minimizes battery drain in always-on appliance control boards with backup power. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24LC08BT/SN | Requires minimum 2.5V VCC; same 400 kHz speed and 8-lead SOIC package | Not suitable for 1.8V systems; otherwise functionally identical for industrial temperature use | Select when system VCC ≥2.5V and legacy 24LC08B qualification is required |
| 24FC08T/SN | Supports 1 MHz I²C clock and extended temperature (–40°C to +125°C); same 1.7V–5.5V range | Better suited for high-speed or under-hood automotive applications requiring faster write throughput | Choose for designs needing >400 kHz bus rates or extended temperature compliance beyond industrial grade |
Compared with 24LC08BT/SN, 24AA08T/SN enables lower-voltage operation and shares identical pinout and block addressing; compared with 24FC08T/SN, it trades 1 MHz speed and extended temp rating for cost-sensitive industrial deployments where 400 kHz suffices.
Availability
24AA08T/SN is available at Aetrix Electronics and suitable for industrial sensor calibration storage, medical device configuration memory, and automotive body control module NVM requiring stable component supply and long-term data retention.
Supply support for 24AA08T/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 devices, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 24AA08T/SN belongs to Microchip's 24XX08 family of I²C serial EEPROMs, designed specifically for low-power, space-constrained embedded systems requiring reliable nonvolatile storage with minimal external components.
FAQ
What is the maximum I²C clock frequency supported by the 24AA08T/SN?
The 24AA08T/SN supports up to 400 kHz when VCC is ≥2.5V, and 100 kHz when VCC is between 1.7V and <2.5V. This dual-speed capability ensures interoperability across 1.8V, 3.3V, and 5V I²C buses without protocol changes. The 24AA08T/SN does not support 1 MHz operation - that capability is exclusive to the 24FC08 variant.
Does the 24AA08T/SN require external pull-up resistors on SDA and SCL lines?
Yes, the 24AA08T/SN requires external pull-up resistors on both SDA and SCL because its I²C interface uses open-drain outputs. Typical values are 10 kΩ for 100 kHz operation and 2 kΩ for 400 kHz. These resistors ensure proper logic-high levels and meet rise-time specifications defined in the 24AA08T/SN AC characteristics table.
How does the write-protect (WP) pin function on the 24AA08T/SN?
When the WP pin of the 24AA08T/SN is tied to VCC, all write operations (byte and page) are inhibited while read operations remain fully functional. When tied to VSS (or left floating), full read/write access is enabled. This hardware-level protection operates independently of I²C commands and provides fail-safe configuration locking.
What is the page write capability of the 24AA08T/SN, and how does it improve efficiency?
The 24AA08T/SN features a 16-byte page write buffer, allowing up to 16 sequential bytes to be written in a single I²C transaction. This reduces bus overhead by up to 16× compared to byte-write mode and shortens total write time - especially valuable in systems with frequent small-data updates like calibration or logging applications.
Is the 24AA08T/SN qualified for automotive applications?
No, the 24AA08T/SN is rated for industrial temperature range (–40°C to +85°C) and is not AEC-Q100 qualified. For automotive use, Microchip offers the 24LC08B and 24FC08 variants - both AEC-Q100 qualified - which share the same 8-Kbit architecture but differ in voltage and speed specs. The 24AA08T/SN remains ideal for industrial, medical, and consumer applications meeting industrial-grade reliability requirements.
24AA08T/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:
- 8Kbit
- Memory Organization:
- 256 x 8 x 4
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
24AA08T/SN FAQ
1.How can I place an order for 24AA08T/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 24AA08T/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 24AA08T/SN reliable?
The price and inventory of 24AA08T/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24AA08T/SN is usually 5 days.
3.What payment methods are accepted for 24AA08T/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24AA08T/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24AA08T/SN?
24AA08T/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24AA08T/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 24AA08T/SN?
For technical support, including 24AA08T/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24AA08T/SN requirements.
6.How does Aetrix verify that 24AA08T/SN is sourced from the original manufacturer or authorized distributors?
All 24AA08T/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 24AA08T/SN meets industry standards.
7.What is the process for return or replacement of 24AA08T/SN?
All 24AA08T/SN units undergo pre-shipment inspection (PSI). If there is an issue with 24AA08T/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 24AA08T/SN part is unused and in its original packaging.
Return procedure for 24AA08T/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24AA08T/SN Tags
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