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Microchip Technology 24AA04T/SN
- Part No.:
- 24AA04T/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
24AA04T/SN.pdf
- Description:
- IC EEPROM 4KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,305
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Product details
Overview
24AA04T/SN from Microchip Technology Inc. is a 4-Kbit I²C-compatible serial EEPROM organized as two 256 × 8-bit blocks, operating from 1.7V to 5.5V with 400 kHz max clock frequency, 1 µA standby current, and industrial temperature range (–40°C to +85°C). It supports page writes up to 16 bytes and hardware write-protection via the WP pin, used in embedded system configuration storage and firmware parameter retention.
For engineers reviewing the 24AA04T/SN datasheet, 24AA04T/SN pinout, 24AA04T/SN application, or 24AA04T/SN equivalent, this page delivers verified electrical specs, SOIC-8 package details, I²C timing constraints at 1.7V–5.5V, endurance (1M cycles), and data retention (>200 years) - all confirmed for the exact 24AA04T/SN variant.
Technical Context
The 24AA04T/SN implements a two-wire I²C interface with Schmitt-trigger inputs and slope-controlled outputs to suppress noise and eliminate ground bounce. Its internal address pointer enables current-address, random, and sequential read modes, while ACK polling allows host-driven write-cycle completion detection without fixed delays.
It uses an on-chip HV generator for EEPROM programming, features a 16-byte page write buffer with self-timed erase/write cycles, and enforces hardware write protection when WP = VCC. The device ignores A0–A2 pins - no internal connection - simplifying PCB layout and eliminating address conflicts on shared buses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4 Kbit (2 × 256 × 8-bit blocks), enabling compact nonvolatile storage for boot parameters or calibration data |
| VCC Range | 1.7V to 5.5V - supports direct interfacing with 1.8V, 3.3V, and 5V microcontrollers without level shifters |
| Max Clock Frequency | 400 kHz at VCC ≥ 2.5V; 100 kHz at 1.7V ≤ VCC < 2.5V - ensures reliable I²C timing across low-voltage operation |
| Page Write Buffer | 16-byte buffer - reduces I²C transaction count for multi-byte writes, improving bus efficiency |
| Endurance | 1,000,000 erase/write cycles - suitable for frequent field-updatable configuration logging |
| Data Retention | >200 years at +25°C - guarantees long-term integrity of stored calibration or security keys |
| Standby Current | 1 µA maximum (I-temp.) - critical for battery-backed or energy-harvesting systems |
Pinout & Package
24AA04T/SN is supplied in an 8-lead narrow SOIC package (SN), 3.90 mm body width, with standard JEDEC SOIC footprint and gull-wing leads. Pin 1 is marked by a beveled corner or notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Address Input | No internal connection - may be left floating or tied to VSS/VCC without affecting operation |
| A1 | Address Input | No internal connection - eliminates need for external pull-ups/downs and simplifies routing |
| A2 | Address Input | No internal connection - supports drop-in replacement in designs using other 24XX04 variants |
| VSS | Ground | Reference return path for all I/O and internal circuitry; must be low-impedance |
| SDA | Serial Data I/O | Open-drain bidirectional line requiring external pull-up (2–10 kΩ); carries addresses, commands, and data |
| SCL | Serial Clock Input | Input-only clock line synchronized to host controller; determines I²C bit rate and timing margins |
| WP | Write-Protect Control | Active-high enable: tied to VCC disables all writes; tied to VSS enables full read/write access |
| VCC | Power Supply | Single supply input (1.7–5.5V); powers EEPROM array, logic, and I/O buffers |
Key Features
| Feature | Design Value |
|---|---|
| Low-Voltage Operation | Functional down to 1.7V - enables direct integration into 1.8V FPGA configuration chains or ultra-low-power sensor nodes |
| I²C Bus Compatibility | Fully compliant with Philips I²C specification, including START/STOP generation, ACK/NACK, and 7-bit addressing |
| Noise Immunity | Schmitt-trigger inputs + 50 ns input filter - rejects EMI spikes common in motor-drive or power-conversion environments |
| Page Write Efficiency | 16-byte buffer with automatic address increment - cuts I²C overhead by up to 88% vs. byte-write for 16-byte updates |
| Hardware Write Protection | Single-pin (WP) global lock - prevents accidental firmware corruption during field updates or brown-out conditions |
| Extended Temperature Support | Industrial grade (–40°C to +85°C) - validated for automotive body control modules and industrial PLC I/O expansion |
Applications
| Industrial Sensor Calibration | Embedded System Boot Configuration |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain coefficients for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding trim values accessed at power-on reset before ADC initialization. Use Value: Eliminates need for external trimming potentiometers; enables field recalibration via I²C without firmware update. |
Use Scenario: Holding boot mode selection (UART vs. USB), default IP settings, and watchdog timeout values in network edge gateways. IC Role / Device Role / Timing Role: Early-boot configuration store read by MCU bootloader prior to main application execution. Use Value: Enables zero-touch deployment across heterogeneous hardware variants using identical firmware binaries. |
| Consumer Appliance Parameter Storage | Automotive Body Control Module |
Use Scenario: Saving user preferences (temperature setpoints, cycle duration) and error logs in smart washing machines. IC Role / Device Role / Timing Role: Persistent data logger with wear-leveling handled by host firmware; accessed during idle periods. Use Value: Survives 10+ years of daily use with >1M write cycles - exceeds appliance lifetime requirements. |
Use Scenario: Storing seat position memory, mirror angle presets, and lighting profiles in vehicle door modules. IC Role / Device Role / Timing Role: AEC-Q100 qualified nonvolatile memory interfaced directly to 3.3V CAN microcontroller I²C peripheral. Use Value: Meets automotive reliability standards including >200-year data retention and –40°C cold-cranking operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24LC04B/SN | Requires minimum 2.5V VCC; no 1.7V operation; same 400 kHz max clock and SOIC-8 package | Not suitable for 1.8V systems; otherwise pin- and functionally compatible for industrial temp designs | Select only if system VCC is guaranteed ≥2.5V and legacy 24LC04B qualification is required |
| 24FC04T/SN | Supports 1 MHz I²C clock and extended temp (–40°C to +125°C); same 1.7–5.5V range and 16-byte page buffer | Enables higher-speed bus arbitration in dense multi-device systems; rated for under-hood automotive use | Choose when faster write throughput or extended temperature operation is mandatory |
Compared with 24AA04T/SN, 24LC04B/SN lacks low-voltage capability but offers identical footprint and timing at ≥2.5V, while 24FC04T/SN adds 1 MHz speed and extended temperature rating - both require no PCB changes but differ in voltage and thermal envelope suitability.
Availability
24AA04T/SN is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded system boot configuration, and consumer appliance parameter storage requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for 24AA04T/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 24AA04T/SN belongs to Microchip's 24XX04 family of I²C serial EEPROMs, designed specifically for cost-sensitive, space-constrained embedded systems requiring reliable nonvolatile storage with minimal external components.
FAQ
What is the maximum I²C clock frequency supported by the 24AA04T/SN?
The 24AA04T/SN supports up to 400 kHz when VCC is 2.5V or higher. At VCC between 1.7V and 2.5V, the maximum clock frequency is reduced to 100 kHz to ensure timing margin compliance. This dual-speed behavior is explicitly specified in the DS20001708P datasheet AC characteristics table and applies strictly to the 24AA04T/SN variant.
Does the 24AA04T/SN require external pull-up resistors on SDA and SCL lines?
Yes, the 24AA04T/SN requires external pull-up resistors on both SDA and SCL because its I/O pins are open-drain. Recommended values are 10 kΩ for 100 kHz operation, 2 kΩ for 400 kHz, and lower values may be needed for 1 MHz (though 24AA04T/SN does not support 1 MHz). These values ensure proper rise times per I²C specification and are confirmed in the 24AA04/24LC04B/24FC04 datasheet Section 2.2.
How many write cycles can the 24AA04T/SN endure before failure?
The 24AA04T/SN is rated for more than 1,000,000 erase/write cycles at +25°C and 5.5V, as measured in page-mode operation. This endurance figure is guaranteed across the industrial temperature range and forms part of Microchip's official datasheet specification (DS20001708P, Table 1-1, Parameter D18). Field reliability testing confirms consistent performance well beyond this minimum.
Is the 24AA04T/SN AEC-Q100 qualified for automotive use?
Yes, the 24AA04T/SN is AEC-Q100 qualified for automotive applications, as stated in the "Features" section of the DS20001708P datasheet. This qualification covers stress testing for temperature cycling, humidity, and electrical robustness, making it suitable for body electronics and infotainment subsystems - though its industrial temperature range (–40°C to +85°C) defines its operational envelope.
What happens to the 24AA04T/SN's WP pin when left unconnected?
When the WP pin of the 24AA04T/SN is left unconnected (floating), the device operates in normal read/write mode because the internal weak pull-down ensures WP defaults to VSS logic level. However, Microchip recommends tying WP explicitly to VSS or VCC for deterministic behavior - floating is acceptable only in noise-immune layouts, per Section 2.4 of DS20001708P.
24AA04T/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:
- 4Kbit
- Memory Organization:
- 256 x 8 x 2
- 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
24AA04T/SN FAQ
1.How can I place an order for 24AA04T/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 24AA04T/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 24AA04T/SN reliable?
The price and inventory of 24AA04T/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24AA04T/SN is usually 5 days.
3.What payment methods are accepted for 24AA04T/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24AA04T/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24AA04T/SN?
24AA04T/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24AA04T/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 24AA04T/SN?
For technical support, including 24AA04T/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24AA04T/SN requirements.
6.How does Aetrix verify that 24AA04T/SN is sourced from the original manufacturer or authorized distributors?
All 24AA04T/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 24AA04T/SN meets industry standards.
7.What is the process for return or replacement of 24AA04T/SN?
All 24AA04T/SN units undergo pre-shipment inspection (PSI). If there is an issue with 24AA04T/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 24AA04T/SN part is unused and in its original packaging.
Return procedure for 24AA04T/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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