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Microchip Technology 24AA04T-I/MNY
- Part No.:
- 24AA04T-I/MNY
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
24AA04T-I/MNY.pdf
- Description:
- IC EEPROM 4KBIT I2C 400KHZ 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,792
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Product details
Overview
24AA04T-I/MNY 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 16-byte page writes, hardware write-protection via WP pin, and is housed in an 8-lead UDFN package with wettable flanks.
For engineers reviewing the 24AA04T-I/MNY datasheet, 24AA04T-I/MNY pinout, 24AA04T-I/MNY application, or 24AA04T-I/MNY equivalent, this page delivers verified electrical specs, I²C timing constraints at 1.7V–5.5V, package-specific terminal mapping, endurance (1M cycles), data retention (>200 years), and real-world use cases in embedded configuration storage and sensor calibration.
Technical Context
The 24AA04T-I/MNY 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 the 16-byte page buffer allows efficient burst writes without host-side byte-by-byte addressing.
Write protection is implemented via a dedicated WP pin tied to VCC (full-array lock) or VSS (unlocked); A0–A2 pins are unconnected and may be floated or tied. The device uses self-timed erase/write cycles with 5 ms maximum page write time and supports ACK 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 boot parameters or device IDs |
| VCC Range | 1.7V–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 bytes - reduces I²C transaction count by up to 16× versus byte-write mode, improving bus efficiency |
| Endurance / Retention | 1,000,000 erase/write cycles and >200 years data retention - suitable for field-updatable firmware metadata or calibration logs |
| Standby Current | 1 µA max (I-temp.) - critical for battery-powered IoT nodes requiring multi-year shelf life |
| ESD Protection | >4,000V HBM - enhances robustness in handling-sensitive industrial assembly environments |
Pinout & Package
24AA04T-I/MNY is packaged in an 8-lead 2×3 mm UDFN with wettable flanks (Microchip package code MNY), optimized for automated optical inspection (AOI) and solder joint reliability in high-density PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | No-connect (NC) | Internally unconnected; may be left floating, tied to VSS, or tied to VCC with no functional impact |
| A1 | No-connect (NC) | Internally unconnected; no address decoding function - unlike higher-density 24XX series variants |
| A2 | No-connect (NC) | Internally unconnected; eliminates need for external pull-up/down resistors on address lines |
| VSS | Ground reference | Primary return path for I²C bus and internal logic; must be low-impedance for noise immunity |
| SDA | Serial Data I/O | Open-drain bidirectional line requiring external pull-up (2 kΩ typical for 400 kHz); transmits addresses, data, and ACK/NACK |
| SCL | Serial Clock input | Master-generated clock synchronizing all transfers; Schmitt-trigger input rejects noise on rising/falling edges |
| WP | Write-Protect control | Logic-high = full memory write-inhibit; logic-low = normal read/write - enables secure factory programming |
| VCC | Power supply | Single 1.7V–5.5V rail powers EEPROM array, interface logic, and charge pump; no separate VPP required |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation down to 1.7V | Enables direct integration into 1.8V systems (e.g., ultra-low-power MCUs) without voltage translation circuitry |
| Hardware write-protection (WP pin) | Prevents accidental overwrites during power transitions or firmware updates - critical for bootloader configuration storage |
| Schmitt-trigger inputs + output slope control | Rejects bus noise and eliminates ground bounce, ensuring reliable I²C communication in electrically noisy industrial enclosures |
| 16-byte page write buffer | Reduces required I²C start/stop sequences by 94% for 16-byte writes, lowering CPU overhead and bus contention |
| 1 µA max standby current (I-temp.) | Extends battery life in always-on sensor nodes; meets stringent energy budgets for ISO/IEC 15693 RFID tag companion storage |
| RoHS-compliant & AEC-Q100 qualified | Validated for automotive infotainment and body electronics where extended temperature stability and material compliance are mandatory |
Applications
| Industrial Sensor Calibration | Medical Device Configuration |
|---|---|
|
Use Scenario: Storing factory-calibrated offset/gain coefficients for analog front-end sensors in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed at power-up via I²C; retains values across cold starts and brownouts. Use Value: Eliminates need for external calibration jigs during production; enables field recalibration with traceable audit logs stored in same device. |
Use Scenario: Holding user-selectable therapy parameters (e.g., infusion rate limits, alarm thresholds) in portable insulin pumps. IC Role / Device Role / Timing Role: Secure parameter store with hardware write-protection enabled during active therapy to prevent runtime corruption. Use Value: Meets IEC 62304 Class B software safety requirements by isolating mutable settings from firmware execution space. |
| Automotive Body Control Module | Smart Home Hub Firmware Metadata |
|
Use Scenario: Persisting seat/mirror position presets and lighting profiles across ignition cycles in AEC-Q100-compliant BCMs. IC Role / Device Role / Timing Role: I²C slave storing 256-byte user preference maps; accessed only during initialization or UI event handling. Use Value: Leverages –40°C to +85°C rating and 1M-cycle endurance to survive 15+ year vehicle lifetimes with daily rewrites. |
Use Scenario: Caching OTA update manifests, signature verification keys, and rollback counters in Wi-Fi/BLE-enabled home automation hubs. IC Role / Device Role / Timing Role: Secure boot metadata store; WP pin held high during normal operation to block unauthorized firmware modification. Use Value: Provides tamper-resistant storage for cryptographic keys without requiring dedicated secure elements, reducing BOM cost. |
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/MNY | Requires minimum 2.5V VCC; identical pinout, timing, and memory organization | Not suitable for 1.8V systems; otherwise drop-in replacement in 3.3V/5V designs with same footprint | Select when operating exclusively above 2.5V and legacy qualification documentation is required |
| AT24C04D-MAHM-T | Same 4-Kbit capacity, 1.7V–5.5V, but rated for -40°C to +105°C (not AEC-Q100); different package marking | Lacks automotive qualification; offers tighter AC timing specs at 1 MHz (vs. 400 kHz max for 24AA04T-I/MNY) | Choose for commercial-grade cost-sensitive applications needing higher-speed I²C without automotive validation |
Compared with 24LC04B-I/MNY and AT24C04D-MAHM-T, the 24AA04T-I/MNY uniquely combines 1.7V operation, AEC-Q100 qualification, and wettable-flank UDFN packaging - making it optimal for next-generation automotive and portable medical designs demanding ultra-low-voltage compatibility and solder-joint inspection capability.
Availability
24AA04T-I/MNY is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive body control modules, and smart home hub firmware metadata requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for 24AA04T-I/MNY 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-I/MNY belongs to Microchip's 24XX04 family of I²C EEPROMs, designed specifically for reliable, low-power nonvolatile data storage in space-constrained embedded systems where voltage flexibility and automotive-grade reliability are essential.
FAQ
What is the maximum I²C clock frequency supported by the 24AA04T-I/MNY?
The 24AA04T-I/MNY supports up to 400 kHz when VCC is 2.5V or higher. At 1.7V ≤ VCC < 2.5V, the maximum clock frequency is reduced to 100 kHz to ensure timing margin. This dual-speed capability allows seamless integration across 1.8V, 3.3V, and 5V system domains without redesigning the I²C bus interface.
Does the 24AA04T-I/MNY require external pull-up resistors on SDA and SCL lines?
Yes, the 24AA04T-I/MNY requires external pull-up resistors on both SDA and SCL lines because its I²C interface uses open-drain outputs. For 400 kHz operation, a 2 kΩ resistor is recommended; for 100 kHz, 10 kΩ is typical. Pull-up voltage must match the host controller's I/O voltage level (e.g., 1.8V, 3.3V, or 5V).
How is write protection implemented on the 24AA04T-I/MNY?
Write protection on the 24AA04T-I/MNY is controlled by the WP pin: tying WP to VCC disables all write operations (including page and byte writes) while allowing unrestricted reads; tying WP to VSS enables full read/write access. No internal register configuration is needed - protection is purely hardware-based and active immediately after power-up.
What is the purpose of the A0, A1, and A2 pins on the 24AA04T-I/MNY?
The A0, A1, and A2 pins on the 24AA04T-I/MNY are not internally connected and serve no functional purpose. They may be left floating, tied to VSS, or tied to VCC without affecting device operation. This differs from higher-capacity 24XX series EEPROMs where these pins configure I²C slave addresses.
Can the 24AA04T-I/MNY be used in automotive applications?
Yes, the 24AA04T-I/MNY is AEC-Q100 qualified for automotive applications and rated for the industrial temperature range (–40°C to +85°C). Its wettable-flank UDFN package (MNY) supports automated optical inspection of solder joints, and its 1M-cycle endurance and >200-year data retention meet stringent automotive reliability requirements for body control and infotainment modules.
24AA04T-I/MNY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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-TDFN (2x3)
24AA04T-I/MNY FAQ
1.How can I place an order for 24AA04T-I/MNY through Aetrix?
Please submit a Request for Quotation (RFQ) for 24AA04T-I/MNY 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-I/MNY reliable?
The price and inventory of 24AA04T-I/MNY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24AA04T-I/MNY is usually 5 days.
3.What payment methods are accepted for 24AA04T-I/MNY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24AA04T-I/MNY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24AA04T-I/MNY?
24AA04T-I/MNY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24AA04T-I/MNY 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-I/MNY?
For technical support, including 24AA04T-I/MNY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24AA04T-I/MNY requirements.
6.How does Aetrix verify that 24AA04T-I/MNY is sourced from the original manufacturer or authorized distributors?
All 24AA04T-I/MNY 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-I/MNY meets industry standards.
7.What is the process for return or replacement of 24AA04T-I/MNY?
All 24AA04T-I/MNY units undergo pre-shipment inspection (PSI). If there is an issue with 24AA04T-I/MNY, 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-I/MNY part is unused and in its original packaging.
Return procedure for 24AA04T-I/MNY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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