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Microchip Technology AT24C04N-10SI-1.8-T
- Part No.:
- AT24C04N-10SI-1.8-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C04N-10SI-1.8-T.pdf
- Description:
- IC EEPROM 4KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,809
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Product details
Overview
AT24C04N-10SI-1.8-T from Microchip Technology (formerly Atmel) is a 4-kbit (512 × 8) I²C-compatible serial EEPROM optimized for low-voltage embedded systems. It operates from 1.8 V to 5.5 V, supports 100 kHz I²C bus speed at 1.8 V, features hardware write protection via the WP pin, and delivers 1 million write cycles with 100-year data retention. It is used in industrial sensor calibration storage and power-management configuration backup.
For engineers reviewing the AT24C04N-10SI-1.8-T datasheet, AT24C04N-10SI-1.8-T pinout, AT24C04N-10SI-1.8-T application, or AT24C04N-10SI-1.8-T equivalent, this page provides verified electrical parameters, JEDEC SOIC-8 package details, I²C timing constraints, endurance/reliability metrics, and validated drop-in alternatives for industrial-grade memory replacement.
Technical Context
The AT24C04N-10SI-1.8-T implements a two-wire I²C interface with Schmitt-triggered, noise-filtered SDA and SCL inputs. Its internal architecture organizes 4096 bits into 32 pages of 16 bytes each, supporting both byte-write and 16-byte page-write modes with automatic address incrementing within pages.
It uses A2 and A1 as hard-wired device address inputs (A0 is NC), enabling up to four devices on a single I²C bus. The WP pin enables hardware-level write protection of the full 4K array when pulled high, while standby current is specified at 3 µA max at VCC = 1.8 V and TA = –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4 kbit (512 words × 8 bits), organized as 32 pages × 16 bytes - enables efficient firmware parameter storage with page-aligned writes. |
| Supply Voltage Range | 1.8 V to 5.5 V - supports direct interfacing with 1.8 V logic families and mixed-voltage systems without level shifting. |
| I²C Clock Frequency | 100 kHz maximum at 1.8 V - ensures reliable communication in ultra-low-power microcontroller applications. |
| Write Cycle Time | 10 ms maximum - defines minimum interval between write commands; impacts real-time logging latency. |
| Endurance | 1 million write cycles - guarantees long-term reliability in field-updatable calibration or event-logging use cases. |
| Data Retention | 100 years at +25°C - ensures nonvolatile storage integrity over product lifetime without refresh. |
| Standby Current | 3 µA max at 1.8 V - minimizes quiescent power in battery-backed or energy-harvesting systems. |
Pinout & Package
AT24C04N-10SI-1.8-T is housed in an 8-lead JEDEC-standard SOIC package (8S1), 3.9 mm × 4.9 mm body, 1.27 mm pitch, gull-wing leads. Pin 1 is marked by a beveled corner or notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | No Connect | Not bonded internally; must be left unconnected per datasheet - avoids unintended device addressing conflicts. |
| A1 | Device Address Input | Hard-wired input used with A2 to select one of four possible I²C addresses (1010xx0/1) on shared bus. |
| A2 | Device Address Input | Hard-wired input used with A1 to configure device address; enables multi-device I²C topology without software arbitration. |
| GND | Ground Reference | Primary return path for VCC and I/O; requires low-impedance connection to minimize noise coupling into SDA/SCL. |
| VCC | Power Supply | 1.8–5.5 V supply input; bypass capacitor (0.1 µF ceramic) required near pin to suppress I²C switching transients. |
| WP | Write Protect Control | Active-high hardware lock: tied to VCC to block all writes; tied to GND for normal read/write operation. |
| SCL | Serial Clock Input | Open-drain input synchronized to master clock; requires external pull-up; defines timing for data sampling and setup/hold windows. |
| SDA | Serial Data I/O | Open-drain bidirectional line; shared across I²C bus; requires external pull-up; carries address, data, and ACK/NACK signals. |
Key Features
| Feature | Design Value |
|---|---|
| 1.8 V operation with 100 kHz I²C | Enables direct integration with ultra-low-power MCUs (e.g., ARM Cortex-M0+, MSP430) without voltage translation. |
| Hardware write protection (WP pin) | Prevents accidental or malicious firmware corruption during power-up/down or brown-out conditions. |
| 16-byte page write capability | Reduces I²C transaction overhead by up to 16× vs. byte writes - critical for burst configuration updates. |
| Schmitt-triggered, filtered inputs | Rejects >100 ns noise pulses on SDA/SCL - improves robustness in electrically noisy industrial environments. |
| Industrial temperature range | Rated for –40°C to +85°C operation - suitable for deployment in motor drives, PLC modules, and outdoor sensors. |
Applications
| Smart Energy Meters | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Storing tariff schedules, meter calibration coefficients, and tamper-event logs across power cycles. IC Role / Device Role / Timing Role: Nonvolatile configuration and event-history storage with guaranteed 100-year retention and 1M-cycle endurance. Use Value: Eliminates need for battery-backed SRAM; reduces BOM cost and field failure risk from capacitor aging. |
Use Scenario: Holding module identification, channel scaling factors, and diagnostic history in distributed I/O racks. IC Role / Device Role / Timing Role: I²C-configurable memory accessible by host controller during initialization and runtime diagnostics. Use Value: Enables field-replaceable module auto-configuration without firmware reflash or manual dip-switch setup. |
| Medical Infusion Pumps | Automotive Body Control Modules |
Use Scenario: Archiving dose history, alarm thresholds, and user preferences with audit-trail integrity. IC Role / Device Role / Timing Role: Secure, WP-enabled storage for safety-critical parameters; accessed only during safe startup or maintenance mode. Use Value: Meets IEC 62304 Class C software requirements for persistent data integrity under fault conditions. |
Use Scenario: Storing seat-position memory, mirror-angle presets, and lighting configuration profiles. IC Role / Device Role / Timing Role: Low-power EEPROM interfaced to LIN or CAN gateway MCU for infotainment-linked settings. Use Value: Supports 1.8 V MCU interfaces and survives automotive cold-crank (4.5 V min) and load-dump (6.25 V max) events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C04D-SSHM-T | Same 4K capacity, SOIC-8, 1.7–5.5 V range; higher 400 kHz I²C speed at ≥2.5 V; no 1.8 V rating. | Preferred where system VCC ≥2.5 V and faster write throughput is needed; not suitable for strict 1.8 V-only designs. | Select AT24C04D-SSHM-T if bus speed >100 kHz is required and supply voltage exceeds 2.5 V. |
| BR24G04FJ-WE2 | Rohm 4K I²C EEPROM, 1.6–5.5 V, 1 MHz max clock, 1.5 µA standby at 1.8 V, same SOIC-8 footprint. | Offers lower standby current and higher speed but lacks A1/A2 address pins - limits multi-device bus scalability. | Choose BR24G04FJ-WE2 for ultra-low-power applications with single-device I²C topology and tighter current budgets. |
Compared with AT24C04N-10SI-1.8-T, AT24C04D-SSHM-T trades 1.8 V compatibility for higher speed, while BR24G04FJ-WE2 reduces standby current but removes device-address flexibility - selection depends on voltage headroom, bus speed needs, and multi-drop requirements.
Availability
AT24C04N-10SI-1.8-T is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device configuration backup, and automotive body-control module memory applications requiring stable component supply across extended temperature ranges.
Supply support for AT24C04N-10SI-1.8-T 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 acquired Atmel in 2016 and maintains full product continuity, qualification, and support for the AT24C series EEPROMs.
The AT24C04N-10SI-1.8-T belongs to Microchip's serial EEPROM product line, designed specifically for reliable, low-voltage, I²C-based nonvolatile storage in space-constrained industrial and automotive control systems.
FAQ
What is the operating voltage range of the AT24C04N-10SI-1.8-T?
The AT24C04N-10SI-1.8-T operates from 1.8 V to 5.5 V DC. Its "-1.8" suffix explicitly denotes guaranteed functionality down to 1.8 V, including 100 kHz I²C communication, 3 µA max standby current, and full write/read capability - making it suitable for direct interface with 1.8 V microcontrollers without level shifters.
Does the AT24C04N-10SI-1.8-T support multi-device I²C buses?
Yes, the AT24C04N-10SI-1.8-T supports up to four devices on a single I²C bus using hard-wired A2 and A1 pins. A0 is a no-connect. This allows unique 7-bit device addresses (1010xx0 for write, 1010xx1 for read) without software address management - essential for modular sensor or I/O systems.
How does the Write Protect (WP) pin function on the AT24C04N-10SI-1.8-T?
When the WP pin is pulled high (to VCC), the AT24C04N-10SI-1.8-T disables all write operations - including byte, page, and sequential writes - protecting the entire 4K memory array. When WP is grounded, normal read/write access is enabled. This hardware lock prevents corruption during power transitions or firmware faults.
What is the maximum write cycle time for the AT24C04N-10SI-1.8-T?
The AT24C04N-10SI-1.8-T has a maximum write cycle time (tWR) of 10 ms, measured from the STOP condition of a write sequence to completion of internal programming. During this period, the device ignores all I²C commands - acknowledge polling is required to detect write completion before issuing subsequent operations.
Is the AT24C04N-10SI-1.8-T qualified for industrial temperature operation?
Yes, the "I" in AT24C04N-10SI-1.8-T denotes Industrial temperature grade, rated for continuous operation from –40°C to +85°C. This includes full specification compliance for I²C timing, standby current (3 µA max at 1.8 V), and write endurance across the full range - validated per AEC-Q200 stress testing protocols.
AT24C04N-10SI-1.8-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 4Kbit
- Memory Organization:
- 512 x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 400 kHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 900 ns
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C04N-10SI-1.8-T FAQ
1.How can I place an order for AT24C04N-10SI-1.8-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C04N-10SI-1.8-T 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 AT24C04N-10SI-1.8-T reliable?
The price and inventory of AT24C04N-10SI-1.8-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C04N-10SI-1.8-T is usually 5 days.
3.What payment methods are accepted for AT24C04N-10SI-1.8-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C04N-10SI-1.8-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C04N-10SI-1.8-T?
AT24C04N-10SI-1.8-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C04N-10SI-1.8-T 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 AT24C04N-10SI-1.8-T?
For technical support, including AT24C04N-10SI-1.8-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C04N-10SI-1.8-T requirements.
6.How does Aetrix verify that AT24C04N-10SI-1.8-T is sourced from the original manufacturer or authorized distributors?
All AT24C04N-10SI-1.8-T 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 AT24C04N-10SI-1.8-T meets industry standards.
7.What is the process for return or replacement of AT24C04N-10SI-1.8-T?
All AT24C04N-10SI-1.8-T units undergo pre-shipment inspection (PSI). If there is an issue with AT24C04N-10SI-1.8-T, 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 AT24C04N-10SI-1.8-T part is unused and in its original packaging.
Return procedure for AT24C04N-10SI-1.8-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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