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Microchip Technology 24AA04-I/MC
- Part No.:
- 24AA04-I/MC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-VFDFN Exposed Pad
- Datasheet:
-
24AA04-I/MC.pdf
- Description:
- IC EEPROM 4KBIT I2C 400KHZ 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,398
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Product details
Overview
24AA04-I/MC 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 for embedded system configuration storage.
For engineers reviewing the 24AA04-I/MC datasheet, 24AA04-I/MC pinout, 24AA04-I/MC application, or 24AA04-I/MC equivalent, this device is selected for low-voltage, space-constrained designs requiring reliable nonvolatile memory with noise-immune I²C interface, Schmitt-trigger inputs, and >1 million endurance cycles.
Technical Context
The 24AA04-I/MC implements a two-wire I²C bus protocol with fixed 4-bit control code (1010b), block-select addressing (B0 bit), and R/W bit-driven operation. Its internal address pointer auto-increments during sequential reads and supports current-address, random, and sequential read modes.
It uses an on-chip HV generator for EEPROM programming, integrates Schmitt-trigger inputs and output slope control to suppress ground bounce and bus noise, and relies on acknowledge polling to detect write-cycle completion without timeout delays.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4 Kbit (2 × 256 × 8-bit blocks), enabling compact firmware parameter or calibration storage |
| Supply Voltage | 1.7V–5.5V - supports direct interfacing with 1.8V, 3.3V, and 5V microcontrollers without level shifters |
| I²C Clock Frequency | Up to 400 kHz at VCC ≥ 2.5V; 100 kHz at 1.7V ≤ VCC < 2.5V - ensures compatibility across voltage-scaled systems |
| Page Write Buffer | 16-byte buffer - reduces I²C transaction count by up to 16× versus byte-write for contiguous data |
| Endurance & Retention | 1,000,000 erase/write cycles and >200 years data retention - suitable for field-updatable systems with long service life |
| Write Protection | Hardware-enabled via WP pin tied to VCC - prevents accidental overwrites during power transients or firmware faults |
| ESD Rating | >4,000V HBM - enhances robustness in handling-sensitive industrial assembly and repair environments |
Pinout & Package
24AA04-I/MC is supplied in an 8-lead DFN package (3 mm × 2 mm, wettable flanks), with exposed pad optionally connected to VSS for thermal and EMI performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0, A1, A2 | Address Input (NC) | No internal connection - may be left floating or tied to VSS/VCC without affecting function or I²C address |
| 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; carries addresses, commands, and data under SCL control |
| SCL | Serial Clock Input | Master-generated clock synchronizing all I²C transfers; rising edge samples data, falling edge allows data change |
| 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 (1.7–5.5V); powers EEPROM core, interface logic, and charge pump for write operations |
Key Features
| Feature | Design Value |
|---|---|
| Low-Voltage Operation | Functional down to 1.7V enables direct integration into battery-powered or energy-harvesting systems |
| Schmitt Trigger Inputs | 0.05 × VCC hysteresis on SDA/SCL rejects fast transients and improves noise margin in electrically noisy environments |
| Output Slope Control | Controlled SDA rise/fall times eliminate ground bounce during high-speed switching, reducing EMI and bus contention |
| Self-Timed Write Cycle | Internal timing eliminates need for external delay or status polling - simplifies host firmware and improves throughput |
| Factory Programming Option | Pre-programmed content available at wafer/test stage - accelerates time-to-market for calibrated or security-configured devices |
Applications
| Industrial Sensor Node | Medical Diagnostic Device |
|---|---|
Use Scenario: Storing calibration coefficients, sensor offsets, and usage logs in battery-operated wireless sensors deployed in factory floors. IC Role / Device Role / Timing Role: Nonvolatile configuration storage with I²C interface, accessed only during power-up or maintenance mode. Use Value: 1.7V operation extends battery life; 1 µA standby current minimizes quiescent drain; >200-year retention ensures data integrity over equipment lifetime. |
Use Scenario: Holding patient-specific settings, device serial numbers, and regulatory compliance flags in portable diagnostic instruments. IC Role / Device Role / Timing Role: Secure, tamper-resistant parameter storage with hardware write-protection enabled during clinical use. Use Value: WP pin tied to VCC prevents runtime corruption of critical settings; RoHS and AEC-Q100 qualification support medical-grade reliability requirements. |
| Smart Home Controller | Automotive Body Control Module |
Use Scenario: Saving user preferences (light scenes, schedules) and network credentials in Wi-Fi/Zigbee gateways with intermittent power. IC Role / Device Role / Timing Role: Persistent memory for state recovery after brownouts or unplanned resets. Use Value: Page write capability (16-byte buffer) reduces I²C bus occupancy when updating multi-parameter configurations. |
Use Scenario: Storing door lock codes, mirror position presets, and lighting profiles in automotive interior modules. IC Role / Device Role / Timing Role: Automotive-qualified nonvolatile memory interfaced directly to MCU I²C peripheral. Use Value: AEC-Q100 qualification and –40°C to +85°C operation ensure reliability in under-dash thermal environments. |
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/MC | Requires minimum 2.5V VCC; same 400 kHz speed and 16-byte page buffer but no 1.7V support | Not suitable for 1.8V-only systems; otherwise identical pinout and command set | Select when design operates strictly at ≥2.5V and cost sensitivity favors legacy 24LC04B sourcing |
| 24FC04-I/MC | Supports 1 MHz I²C clock and extended temperature range (–40°C to +125°C); same 1.7V–5.5V supply | Better suited for high-throughput or under-hood automotive applications where speed or extended temp is required | Choose when faster bus timing or extended temperature grade justifies higher unit cost |
Compared with 24LC04B-I/MC, the 24AA04-I/MC enables lower-voltage operation without sacrificing endurance or interface compatibility; compared with 24FC04-I/MC, it trades maximum clock speed and extended temperature for cost efficiency in standard industrial environments.
Availability
24AA04-I/MC is available at Aetrix Electronics and suitable for industrial sensor nodes, medical diagnostic devices, smart home controllers, and automotive body control modules requiring stable component supply and long-term obsolescence management.
Supply support for 24AA04-I/MC 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, FPGA, and memory solutions, serving industrial, automotive, and consumer markets with vertically integrated silicon and development tools.
The 24AA04-I/MC belongs to Microchip's 24XX04 family of I²C serial EEPROMs, designed specifically for low-power, space-constrained embedded systems needing reliable, pin-compatible nonvolatile memory with minimal external components.
FAQ
What is the I²C address of the 24AA04-I/MC and how is it determined?
The 24AA04-I/MC uses a fixed 4-bit control code of 1010b. Pins A0–A2 are not internally connected, so the device address is always 1010000b (0x50) for write and 1010001b (0x51) for read. No external address configuration is required, simplifying PCB layout and firmware initialization for the 24AA04-I/MC.
Does the 24AA04-I/MC support page writes across memory boundaries?
No. The 24AA04-I/MC restricts page writes to within a single 16-byte physical page. Attempting to write across a boundary causes wraparound within the current page, overwriting earlier bytes. Firmware must validate word addresses before initiating page writes to prevent unintended data loss in the 24AA04-I/MC.
How does the WP pin function on the 24AA04-I/MC?
When WP is tied to VCC, the entire 4-Kbit memory array (addresses 000h–1FFh) is write-protected; reads remain fully functional. When WP is tied to VSS or left floating, full read/write access is enabled. This hardware-level protection prevents accidental writes during power-up, reset, or software faults in the 24AA04-I/MC.
What is the maximum write cycle time for the 24AA04-I/MC?
The 24AA04-I/MC specifies a maximum write cycle time of 5 ms for both byte and page writes. During this period, the device does not acknowledge I²C commands. Host firmware must use acknowledge polling (repeated START + control byte) or fixed-delay waits to determine completion before issuing subsequent commands to the 24AA04-I/MC.
Is the 24AA04-I/MC compatible with 1.8V I²C buses?
Yes. The 24AA04-I/MC operates from 1.7V to 5.5V and supports I²C communication at 100 kHz down to 1.7V. Its Schmitt-trigger inputs and noise-suppression features maintain signal integrity on 1.8V buses, and its 1 µA standby current makes it ideal for ultra-low-power 1.8V systems using the 24AA04-I/MC.
24AA04-I/MC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-VFDFN Exposed Pad
- 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-DFN (2x3)
24AA04-I/MC FAQ
1.How can I place an order for 24AA04-I/MC through Aetrix?
Please submit a Request for Quotation (RFQ) for 24AA04-I/MC 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/MC reliable?
The price and inventory of 24AA04-I/MC 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/MC is usually 5 days.
3.What payment methods are accepted for 24AA04-I/MC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24AA04-I/MC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24AA04-I/MC?
24AA04-I/MC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24AA04-I/MC 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/MC?
For technical support, including 24AA04-I/MC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24AA04-I/MC requirements.
6.How does Aetrix verify that 24AA04-I/MC is sourced from the original manufacturer or authorized distributors?
All 24AA04-I/MC 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/MC meets industry standards.
7.What is the process for return or replacement of 24AA04-I/MC?
All 24AA04-I/MC units undergo pre-shipment inspection (PSI). If there is an issue with 24AA04-I/MC, 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/MC part is unused and in its original packaging.
Return procedure for 24AA04-I/MC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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