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Microchip Technology 24AA04-I/SNG
- Part No.:
- 24AA04-I/SNG
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
24AA04-I/SNG.pdf
- Description:
- IC EEPROM 4KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,052
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Product details
Overview
24AA04-I/SNG 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 features hardware write-protection via the WP pin for embedded system configuration storage.
For engineers reviewing the 24AA04-I/SNG datasheet, 24AA04-I/SNG pinout, 24AA04-I/SNG application, or 24AA04-I/SNG equivalent, key selection criteria include low-voltage operation down to 1.7V, I²C bus compatibility at 400 kHz, Schmitt-trigger noise immunity, self-timed write cycles, and industrial-grade reliability with >1 million endurance cycles.
Technical Context
The 24AA04-I/SNG implements a two-wire I²C interface with open-drain SDA/SCL pins, internal address pointer, and block-select addressing using the B0 bit in the control byte. Its memory architecture uses on-chip page latches for 16-byte buffered writes and includes an HV generator for EEPROM programming.
It incorporates Schmitt-trigger inputs and output slope control to suppress ground bounce and bus noise, with AC timing validated for 100 kHz (at VCC < 2.5V) and 400 kHz (at VCC ≥ 2.5V), and supports acknowledge polling to detect write completion without fixed delays.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4 Kbit (2 × 256 × 8-bit blocks), enabling compact nonvolatile storage for calibration data or device settings |
| VCC Range | 1.7V to 5.5V - supports direct interfacing with 1.8V, 3.3V, and 5V microcontrollers without level shifting |
| Max Clock Frequency | 400 kHz at VCC ≥ 2.5V; 100 kHz at 1.7V ≤ VCC < 2.5V - ensures reliable I²C communication across wide supply range |
| Page Write Buffer | 16-byte buffer - reduces write transaction count by up to 16× versus byte-write mode |
| Write Cycle Time | 5 ms maximum - defines worst-case latency before next bus access is possible |
| Endurance | 1,000,000 erase/write cycles - supports frequent field updates in industrial logging applications |
| Data Retention | 200 years - guarantees long-term integrity of stored configuration or calibration values |
Pinout & Package
24AA04-I/SNG is supplied in an 8-lead SOIC (SN) package with 3.90 mm body width and standard 1.27 mm pitch. Pin 1 is marked with a notch or bevel; A0–A2 are no-connects and may be left floating or tied to VSS/VCC without functional impact.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0, A1, A2 | No-connect (NC) | Internally unconnected; no effect on addressing or operation - simplifies PCB layout and eliminates external pull-up/down requirements |
| VSS | Ground reference | Return path for all internal circuitry; must be low-impedance to ensure stable EEPROM operation and noise immunity |
| SDA | Serial Data I/O | Open-drain bidirectional bus line requiring external pull-up (2 kΩ typical for 400 kHz); carries addresses, data, and ACK/NACK signals |
| SCL | Serial Clock input | Master-generated clock synchronizing all data transfers; Schmitt-trigger input rejects noise on rising/falling edges |
| WP | Write-Protect control | Logic-high disables all writes to entire memory array (000h–1FFh); logic-low enables full read/write access |
| VCC | Power supply | Single-supply input supporting 1.7V–5.5V; powers internal charge pump, logic, and memory array |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation (1.7V min) | Enables direct integration into battery-powered or energy-harvesting systems without voltage boosting |
| 16-byte page write buffer | Reduces firmware overhead and bus occupancy when updating multi-byte parameter sets |
| Hardware write-protection (WP pin) | Prevents accidental or malicious overwrites of critical configuration data during power-up or firmware faults |
| Schmitt-trigger inputs + slope control | Eliminates false Start/Stop detection and ground bounce in electrically noisy environments (e.g., motor drives) |
| 1 µA standby current (I-temp) | Minimizes quiescent power draw in always-on systems such as smart sensors or IoT edge nodes |
Applications
| Industrial Sensor Calibration | Medical Device Configuration |
|---|---|
Use Scenario: Storing factory-calibrated sensor offset/gain coefficients and linearization tables in pressure or temperature transmitters. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed during power-up or recalibration routines via I²C. Use Value: Ensures measurement accuracy across product lifetime without requiring external NVM or host MCU flash usage. | Use Scenario: Retaining user-selected therapy parameters, device ID, and audit logs in portable infusion pumps or diagnostic monitors. IC Role / Device Role / Timing Role: Secure, tamper-resistant storage for FDA-regulated operational data with hardware write-lock capability. Use Value: Meets IEC 62304 data retention and integrity requirements while minimizing MCU resource load. |
| Automotive Body Control Module | Smart Home Gateway Settings |
Use Scenario: Saving seat/mirror position presets, lighting profiles, and door lock configurations in 12V automotive ECUs. IC Role / Device Role / Timing Role: AEC-Q100 qualified EEPROM storing user preferences accessible across ignition cycles. Use Value: Provides guaranteed 200-year data retention and >1M endurance despite frequent reprogramming during service. | Use Scenario: Holding Wi-Fi credentials, Zigbee network keys, and firmware update metadata in residential gateways. IC Role / Device Role / Timing Role: Secure boot-time configuration store with WP pin enabled during normal operation to prevent OTA corruption. Use Value: Enables zero-touch provisioning while blocking unauthorized runtime writes to sensitive security parameters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24LC04B-I/SN | Requires minimum 2.5V VCC; same 4-Kbit size, 400 kHz, and SOIC-8 package | Lacks 1.7V operation - unsuitable for 1.8V systems or brown-out conditions below 2.5V | Select only if system VCC is guaranteed ≥2.5V and cost sensitivity outweighs low-voltage flexibility |
| 24AA02E48-I/SN | 2-Kbit capacity with integrated unique 48-bit MAC address; same 1.7V–5.5V range and SOIC-8 footprint | Smaller memory but adds factory-programmed EUI-48 identifier - useful for device authentication, not bulk storage | Choose when node identity management is required alongside minimal configuration storage |
Compared with 24LC04B-I/SN, 24AA04-I/SNG enables lower-voltage operation critical for energy-constrained designs; compared with 24AA02E48-I/SN, it provides double the memory for parameter-rich applications without sacrificing voltage flexibility or package compatibility.
Availability
24AA04-I/SNG is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device configuration, and automotive body control modules requiring stable component supply, long-term data retention, and AEC-Q100-compliant reliability.
Supply support for 24AA04-I/SNG 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 24AA04-I/SNG belongs to Microchip's 24XX04 family of I²C serial EEPROMs, designed specifically for robust, low-power nonvolatile storage in space- and power-constrained embedded systems across industrial, medical, and automotive markets.
FAQ
What is the minimum operating voltage for the 24AA04-I/SNG?
The 24AA04-I/SNG operates down to 1.7V, making it compatible with 1.8V logic systems and enabling use in battery-powered applications where supply voltage may dip near brown-out thresholds. This is confirmed in the DC Characteristics table (D1–D10) of DS20001708P, specifying 1.7V–5.5V operation for the 24AA04 variant.
Does the 24AA04-I/SNG require external pull-up resistors on SDA and SCL lines?
Yes, the 24AA04-I/SNG requires external pull-up resistors on both SDA and SCL because these pins are open-drain. Typical values are 2 kΩ for 400 kHz operation and 10 kΩ for 100 kHz, as specified in Section 2.2 of DS20001708P. The resistor value directly affects rise time and bus speed compliance.
How does the WP pin function on the 24AA04-I/SNG?
When the WP pin of the 24AA04-I/SNG is tied to VCC, the entire memory array (addresses 000h–1FFh) is write-protected; reads remain fully functional. When tied to VSS, normal read/write operation is enabled. This hardware-level protection prevents unintended writes during power transitions or firmware errors.
What is the maximum page write size supported by the 24AA04-I/SNG?
The 24AA04-I/SNG supports a 16-byte page write buffer, allowing up to 16 bytes to be loaded into the on-chip latch before initiating the internal 5 ms write cycle. Page writes must not cross physical page boundaries (every 16-byte aligned address), as documented in Section 6.2 and Figure 6-2 of DS20001708P.
Is the 24AA04-I/SNG AEC-Q100 qualified?
Yes, the 24AA04-I/SNG is AEC-Q100 qualified per the "Features" section of DS20001708P, confirming its suitability for automotive applications including body control modules and infotainment subsystems. This qualification covers stress testing for temperature cycling, humidity, and electrical robustness under automotive operating conditions.
24AA04-I/SNG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
24AA04-I/SNG FAQ
1.How can I place an order for 24AA04-I/SNG through Aetrix?
Please submit a Request for Quotation (RFQ) for 24AA04-I/SNG 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 24AA04-I/SNG reliable?
The price and inventory of 24AA04-I/SNG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24AA04-I/SNG is usually 5 days.
3.What payment methods are accepted for 24AA04-I/SNG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24AA04-I/SNG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24AA04-I/SNG?
24AA04-I/SNG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24AA04-I/SNG 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 24AA04-I/SNG?
For technical support, including 24AA04-I/SNG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24AA04-I/SNG requirements.
6.How does Aetrix verify that 24AA04-I/SNG is sourced from the original manufacturer or authorized distributors?
All 24AA04-I/SNG 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 24AA04-I/SNG meets industry standards.
7.What is the process for return or replacement of 24AA04-I/SNG?
All 24AA04-I/SNG units undergo pre-shipment inspection (PSI). If there is an issue with 24AA04-I/SNG, 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 24AA04-I/SNG part is unused and in its original packaging.
Return procedure for 24AA04-I/SNG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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