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Microchip Technology 24AA00T/SN
- Part No.:
- 24AA00T/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
24AA00T/SN.pdf
- Description:
- IC EEPROM 128BIT I2C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,095
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Product details
Overview
24AA00T/SN from Microchip Technology Inc. is a 128-bit (16 × 8) I²C-compatible serial EEPROM optimized for ultra-low-power embedded systems. It operates from 1.8 V to 5.5 V, draws only 500 µA typical read current and 100 nA typical standby current, and supports 100 kHz/400 kHz clock rates - ideal for calibration storage in battery-powered sensors and portable medical devices.
For engineers reviewing the 24AA00T/SN datasheet, 24AA00T/SN pinout, 24AA00T/SN application, or 24AA00T/SN equivalent, key selection criteria include its 1.8 V minimum supply, industrial temperature range (–40°C to +85°C), SOT-23-5 package footprint, Schmitt-trigger noise immunity, and self-timed 3 ms write cycle.
Technical Context
The 24AA00T/SN implements a true 2-wire I²C slave interface with fixed 7-bit address (1010xxx) and R/W bit control. Its internal architecture includes a 128-bit EEPROM array, address pointer logic, and on-chip HV generator for erase/write operations - all managed by memory control logic that enforces bus timing compliance per I²C specification.
It features Schmitt-trigger inputs on SDA and SCL with 50 ns spike suppression and hysteresis ≥0.05×VCC, plus output slope control to suppress ground bounce. Write cycles are self-timed and internally gated by a VCC threshold detector (1.5 V trip point), preventing corruption during brown-out conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 128 bits (16 words × 8 bits); sufficient for device ID, calibration coefficients, or manufacturing traceability data. |
| Supply voltage | 1.8 V to 5.5 V; enables direct interfacing with 1.8 V, 2.5 V, 3.3 V, and 5 V microcontrollers without level shifters. |
| Standby current | 100 nA typical; extends battery life in always-on IoT edge nodes and wearables. |
| I²C speed | 100 kHz / 400 kHz compatible; supports standard-mode and fast-mode timing without external clock stretching. |
| Write cycle time | 3 ms typical; allows rapid nonvolatile updates during system initialization or field calibration. |
| Data retention | >200 years; ensures long-term reliability in infrastructure monitoring and automotive subsystems. |
| Endurance | 1 million erase/write cycles; suitable for applications requiring frequent parameter logging or configuration changes. |
Pinout & Package
24AA00T/SN is supplied in a Pb-free, RoHS-compliant 5-lead SOT-23 package (1.90 mm × 1.30 mm × 0.95 mm), optimized for space-constrained PCB layouts. The exposed pad is not electrically connected and may be left floating or grounded for thermal relief.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 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 bus line shared with other I²C devices; must be pulled up externally (2 kΩ for 400 kHz). |
| VSS | Ground reference | Primary return path for all internal circuitry and I/O leakage currents; connects to system GND plane. |
| VCC | Power supply input | Accepts 1.8–5.5 V; powers EEPROM core, interface logic, and charge pump; decoupling capacitor required. |
| NC | No-connect terminal | Internally unconnected; must remain unconnected on PCB to avoid parasitic coupling or ESD paths. |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation | Functional down to 1.8 V - eliminates need for voltage regulators in single-cell Li-ion or coin-cell systems. |
| Schmitt-trigger inputs | Input hysteresis ≥0.05×VCC and 50 ns noise filtering - prevents false start/stop detection on noisy industrial buses. |
| Output slope control | Controlled SDA rise/fall edges - suppresses ground bounce and EMI in mixed-signal PCBs with shared return paths. |
| Factory programming option | Pre-programmed content available at wafer/test - reduces post-assembly firmware provisioning steps in high-volume production. |
| ESD robustness | >4000 V HBM - withstands handling and board-level ESD events without latch-up or parametric shift. |
Applications
| Smart Sensor Calibration | Medical Device ID Storage |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain coefficients for MEMS accelerometers in industrial condition monitoring systems. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed once per power-up via I²C before sensor data acquisition begins. Use Value: Eliminates external calibration hardware and enables plug-and-play replacement of sensor modules without reprogramming host MCU. | Use Scenario: Holding unique device serial number, manufacturing date, and regulatory certification codes in portable glucose meters. IC Role / Device Role / Timing Role: Secure, tamper-resistant identity store queried during boot sequence for regulatory audit logging. Use Value: Meets FDA 21 CFR Part 11 requirements for traceable device identification with no software overhead. |
| IoT Edge Node Configuration | Automotive Subsystem Parameter Backup |
Use Scenario: Retaining user-defined network credentials (SSID/password), OTA update flags, and sensor sampling intervals in battery-powered environmental monitors. IC Role / Device Role / Timing Role: Low-power persistent memory updated infrequently but read at every wake-up cycle. Use Value: Achieves 10+ year battery life using 100 nA standby current while preserving critical runtime state across deep-sleep modes. | Use Scenario: Backing up adaptive learning parameters (e.g., throttle response curves) in body control modules during ignition-off periods. IC Role / Device Role / Timing Role: Fail-safe shadow memory written after each valid learning event and verified on next power-on reset. Use Value: Ensures consistent vehicle behavior across power cycles without requiring re-learning after battery disconnect. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24LC00T/SN | Minimum VCC = 2.5 V; otherwise identical pinout, timing, and memory map. | Not suitable for 1.8 V or 2.0 V systems; acceptable where 3.3 V rail is stable and guaranteed. | Select only if system VCC ≥2.5 V and 24AA00T/SN's 1.8 V capability is unnecessary. |
| AT24C01A-PU | 1 Kbit capacity (128 × 8), same 1.8–5.5 V range, but requires external pull-ups and lacks factory programming option. | Higher density for multi-parameter storage; no integrated noise suppression features - needs external RC filtering on noisy boards. | Choose when >128 bits are needed and board layout allows added passive components for signal integrity. |
Compared with 24LC00T/SN and AT24C01A-PU, the 24AA00T/SN uniquely enables sub-2.0 V operation and delivers superior noise immunity in compact SOT-23 form factor - making it optimal for space- and power-constrained designs where minimal BOM count and robustness are prioritized over raw capacity.
Availability
24AA00T/SN is available at Aetrix Electronics and suitable for smart sensor calibration, medical device ID storage, IoT edge node configuration, and automotive subsystem parameter backup requiring stable component supply across extended product lifecycles.
Supply support for 24AA00T/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 microcontroller, analog, FPGA, and memory solutions, serving industrial, automotive, communications, and consumer markets with high-reliability silicon and development tools.
The 24AA00T/SN belongs to Microchip's legacy 24XX00 EEPROM family - designed specifically for ultra-low-power, low-density nonvolatile storage in cost-sensitive, space-constrained embedded systems where simplicity, longevity, and supply chain stability are critical.
FAQ
What is the minimum operating voltage for the 24AA00T/SN?
The 24AA00T/SN operates down to 1.8 V - the lowest among the 24XX00 family. This allows direct connection to 1.8 V logic rails and extends usability in single-cell lithium or alkaline battery systems. Below 1.8 V, the internal VCC detector disables write operations to prevent data corruption, and the device enters a high-impedance state.
Does the 24AA00T/SN support I²C fast mode (400 kHz)?
Yes, the 24AA00T/SN fully supports I²C fast mode at 400 kHz across its full 1.8–5.5 V supply range. Its AC characteristics specify tLOW ≥1300 ns and tHIGH ≥600 ns at 4.5–5.5 V, meeting standard fast-mode timing requirements. Pull-up resistors should be sized accordingly (e.g., ~2 kΩ for 400 kHz on typical 100 pF bus capacitance).
How many write cycles can the 24AA00T/SN endure?
The 24AA00T/SN guarantees more than 1 million erase/write cycles per memory location. This endurance is ensured through characterization (not 100% tested) and validated using Microchip's Total Endurance™ Model. Real-world wear leveling is unnecessary due to the device's fixed 16-word address space and lack of internal wear-leveling logic.
Is the NC pin on the 24AA00T/SN required to be tied to ground or left floating?
The NC (No Connect) pin on the 24AA00T/SN must remain unconnected on the PCB - neither grounded nor pulled high. It is internally unconnected and serves only as a mechanical placeholder in the SOT-23-5 package. Connecting it risks introducing parasitic capacitance or unintended current paths that could affect noise immunity or ESD performance.
Can the 24AA00T/SN be used in automotive applications?
The 24AA00T/SN is rated for industrial temperature range (–40°C to +85°C), not automotive (–40°C to +125°C). While some units may function at higher temperatures, Microchip does not qualify or guarantee operation beyond +85°C. For automotive use, the 24C00 variant (with E-temp grade) is specified - but it requires minimum 4.5 V supply and uses different marking and qualification.
24AA00T/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:
- 128bit
- Memory Organization:
- 16 x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 400 kHz
- Write Cycle Time - Word, Page:
- 4ms
- Access Time:
- 3500 ns
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
24AA00T/SN FAQ
1.How can I place an order for 24AA00T/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 24AA00T/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 24AA00T/SN reliable?
The price and inventory of 24AA00T/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24AA00T/SN is usually 5 days.
3.What payment methods are accepted for 24AA00T/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24AA00T/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24AA00T/SN?
24AA00T/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24AA00T/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 24AA00T/SN?
For technical support, including 24AA00T/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24AA00T/SN requirements.
6.How does Aetrix verify that 24AA00T/SN is sourced from the original manufacturer or authorized distributors?
All 24AA00T/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 24AA00T/SN meets industry standards.
7.What is the process for return or replacement of 24AA00T/SN?
All 24AA00T/SN units undergo pre-shipment inspection (PSI). If there is an issue with 24AA00T/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 24AA00T/SN part is unused and in its original packaging.
Return procedure for 24AA00T/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24AA00T/SN Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
Microchip Technology
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AT24C02C-SSHM-T
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24LC01BT-I/OT
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M24C02-FMC6TG
STMicroelectronics
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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24LC01BT-I/SN
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24AA02UIDT-I/OT
Microchip Technology
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AT24C08C-STUM-T
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