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Microchip Technology AT24C08D-UUM0B-T-894
- Part No.:
- AT24C08D-UUM0B-T-894
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 4-XFBGA, WLCSP
- Datasheet:
-
AT24C08D-UUM0B-T-894.pdf
- Description:
- IC EEPROM 8KBIT I2C 1MHZ 4WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,597
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Product details
Overview
AT24C08D-UUM0B-T-894 from Microchip Technology is an I²C-compatible 8-Kbit serial EEPROM organized as 1,024 × 8 bits, operating from 1.7V to 3.6V with industrial temperature range (−40°C to +85°C), supporting 1 MHz Fast Mode Plus, and featuring hardware write-protection via WP pin for full-array data security in embedded control and sensor calibration applications.
For engineers reviewing the AT24C08D-UUM0B-T-894 datasheet, AT24C08D-UUM0B-T-894 pinout, AT24C08D-UUM0B-T-894 application, or AT24C08D-UUM0B-T-894 equivalent, this page delivers verified package mapping (8-pad UDFN), confirmed I²C timing specs (tWR ≤ 5 ms, fSCL up to 1 MHz), endurance (1M cycles), data retention (100 years), and real-world noise immunity via Schmitt-triggered SDA/SCL inputs.
Technical Context
The AT24C08D-UUM0B-T-894 operates as a slave device on a two-wire I²C bus, using rising-edge clock latching and falling-edge data output synchronized to SCL. Its internal architecture includes a hardware address comparator (A2 input), high-voltage generation circuit for EEPROM writes, and POR-controlled reset behavior requiring ≥100 µs stable VCC before first command.
It supports three I²C speed modes: 100 kHz (1.7–3.6V), 400 kHz (1.7–3.6V), and 1 MHz Fast Mode Plus (2.5–3.6V), with integrated spike suppression filters and Schmitt triggers on SDA/SCL to reject noise. Write protection is implemented via dedicated WP pin tied to VCC (full array lock) or GND (normal operation), with internal pull-downs ensuring defined state when floating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1,024 × 8 bits), enabling storage of firmware patches, calibration coefficients, or device configuration data in space-constrained systems. |
| Supply Voltage | 1.7V to 3.6V - supports direct interface with 1.8V/2.5V/3.3V microcontrollers without level-shifting. |
| Write Cycle Time | ≤5 ms maximum - enables rapid nonvolatile updates during system initialization or field reconfiguration. |
| Endurance | 1,000,000 write cycles - ensures reliable logging or parameter adjustment over multi-year product lifetimes. |
| Data Retention | 100 years at 55°C - guarantees long-term integrity of stored settings in industrial environments. |
| I²C Speed Modes | 100 kHz / 400 kHz / 1 MHz FM+ - provides flexibility for low-noise legacy buses or high-throughput data capture. |
| Standby Current | 0.8 μA maximum at 3.6V - minimizes battery drain in always-on IoT edge nodes and portable instrumentation. |
Pinout & Package
AT24C08D-UUM0B-T-894 is packaged in an 8-pad UDFN (Ultra Thin Dual Flat No-lead) with exposed pad, footprint-optimized for high-density PCB layouts and thermal performance. Pin 1 is A2; pin 4 is GND; pin 5 is SDA; pin 6 is SCL; pin 7 is WP; pin 8 is VCC. Pins 1 and 2 are NC (no connect) in this variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A2 | Hardware Device Address Input | Configures one of two possible I²C addresses (1010xxx0 or 1010xxx1); internally pulled down if left floating - must be hard-wired for deterministic multi-device bus operation. |
| GND | Ground Reference | System ground return path; exposed pad may be connected to GND for improved thermal dissipation and EMI reduction. |
| SDA | Serial Data Line | Open-drain bidirectional I²C data line requiring external pull-up (≤10 kΩ); incorporates Schmitt trigger and noise filter for robust communication in noisy environments. |
| SCL | Serial Clock Line | Input-only I²C clock line requiring external pull-up; rising edge latches input data, falling edge clocks out output data - timing-critical for 1 MHz FM+ compliance. |
| WP | Write-Protect Control | Hardware-enforced memory lock: tied to VCC disables all writes; tied to GND enables normal operation - prevents accidental corruption during power transients or firmware bugs. |
| VCC | Power Supply | 1.7–3.6V supply input; requires monotonic ramp-up ≤0.1 V/µs and ≥100 µs stabilization time post-power-up before first I²C command. |
Key Features
| Feature | Design Value |
|---|---|
| 16-byte Page Write Mode | Enables partial-page writes without erasing entire pages - reduces write latency and extends EEPROM lifetime in incremental data logging. |
| Schmitt Trigger Inputs | Provides hysteresis on SDA/SCL to reject fast transients and EMI-induced glitches - eliminates spurious ACK/NACK errors in motor-drive or RF-rich enclosures. |
| Ultra-Low Standby Current | 0.8 μA max at 3.6V allows continuous I²C bus presence while drawing negligible current - ideal for battery-backed real-time clocks and energy-harvesting sensors. |
| ESD Protection | >4,000V HBM - withstands handling and board-level ESD events without latch-up or parametric shift, reducing field failure risk. |
| Green Packaging | RoHS-compliant, halide-free, lead-free UDFN - meets global environmental regulations and simplifies end-of-life compliance reporting. |
Applications
| Industrial Sensor Calibration | Medical Device Configuration |
|---|---|
|
Use Scenario: Storing factory-calibrated offset/gain values for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile parameter storage accessed during power-up; I²C read occurs within 100 µs after VCC stabilization. Use Value: Eliminates need for external calibration trimmers and enables field recalibration via firmware update - supported by 1M-cycle endurance and 100-year data retention. |
Use Scenario: Holding patient-specific therapy parameters and usage logs in portable infusion pumps. IC Role / Device Role / Timing Role: Secure configuration store with WP pin tied to system safety controller - prevents runtime corruption during dose delivery. Use Value: Hardware write-lock ensures regulatory compliance with IEC 62304; ultra-low standby current extends single-battery life beyond 12 months. |
| Automotive Body Control Module | Smart Meter Firmware Patch Storage |
|
Use Scenario: Saving seat/mirror position presets and lighting profiles across ignition cycles in 12V automotive systems. IC Role / Device Role / Timing Role: I²C slave interfaced to 3.3V MCU; operates across −40°C to +85°C ambient with 1.7–3.6V supply tolerance. Use Value: Industrial temp grade and wide VCC range eliminate need for local LDO - reduces BOM count and PCB area in space-limited BCM modules. |
Use Scenario: Storing encrypted firmware delta patches downloaded over PLC or RF links for remote meter upgrades. IC Role / Device Role / Timing Role: High-speed 1 MHz I²C write target during maintenance windows; uses page-write mode to minimize flash programming time. Use Value: 5 ms max write cycle and 16-byte page buffering enable sub-second patch commits - critical for utility-grade OTA update SLAs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95080-DFMN6TP | 8-Kbit SPI interface (not I²C); 2.5–5.5V supply; no WP pin; SO8 package only. | Requires SPI-capable host MCU; lacks hardware write protection; incompatible pinout and protocol stack. | Select only when SPI bus is available and I²C resource contention exists; not drop-in compatible. |
| 24LC08BT-I/OT | Same 8-Kbit I²C EEPROM but in SOT23-5 package; no A2 or WP pins; fixed address only. | Limited to single-device I²C buses; no hardware write protection; smaller footprint but reduced configurability. | Choose for ultra-compact designs where address flexibility and WP are unnecessary - not pin-compatible with UDFN. |
Compared with M95080-DFMN6TP and 24LC08BT-I/OT, AT24C08D-UUM0B-T-894 uniquely combines I²C FM+ speed, hardware WP, A2 address select, and UDFN packaging - making it optimal for multi-node, safety-critical, space-constrained embedded systems requiring deterministic nonvolatile storage.
Availability
AT24C08D-UUM0B-T-894 is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device configuration, automotive body control modules, and smart meter firmware patch storage requiring stable component supply across extended product lifecycles.
Supply support for AT24C08D-UUM0B-T-894 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 is a global semiconductor company specializing in microcontrollers, analog devices, and memory solutions, with ISO 9001-certified quality systems and broad industrial design-in support.
The AT24C08D belongs to Microchip's serial EEPROM product line, engineered for low-voltage, low-power, high-reliability nonvolatile storage in harsh environments - targeting applications demanding 100-year data retention and 1M write cycles.
FAQ
What is the maximum I²C clock frequency supported by AT24C08D-UUM0B-T-894?
AT24C08D-UUM0B-T-894 supports up to 1 MHz in Fast Mode Plus (FM+), but only when VCC is between 2.5V and 3.6V. At 1.7–2.5V, it operates in Fast Mode (400 kHz) or Standard Mode (100 kHz). This voltage-dependent speed grading ensures timing margin compliance across its full supply range - critical for mixed-voltage system designs.
Does AT24C08D-UUM0B-T-894 require external pull-up resistors on SDA and SCL lines?
Yes, AT24C08D-UUM0B-T-894 requires external pull-up resistors on both SDA and SCL. SDA is open-drain and must use ≤10 kΩ; SCL may be driven or pulled up similarly. Pull-up values depend on bus capacitance and target speed: 1.3 kΩ for 1 MHz, 4 kΩ for 400 kHz, and 10 kΩ for 100 kHz - per Microchip's DS20006022A specification.
How does the Write-Protect (WP) pin function on AT24C08D-UUM0B-T-894?
On AT24C08D-UUM0B-T-894, the WP pin enables hardware-level memory lock: when tied to VCC, all write operations (byte/page) to the full 8-Kbit array are inhibited; when tied to GND, normal writes proceed. If left floating, WP is internally pulled down - but Microchip recommends hard-wiring to avoid noise-induced false locks in electrically noisy systems.
What is the power-up sequence requirement for reliable operation of AT24C08D-UUM0B-T-894?
AT24C08D-UUM0B-T-894 requires a monotonic VCC ramp-up ≤0.1 V/µs, followed by ≥100 µs of stable supply before the first I²C command. This ensures proper Power-on Reset (POR) release. Failure to observe tPUP causes undefined behavior - such as missed ACKs or corrupted writes - especially in systems with fast-switching DC/DC converters.
Is AT24C08D-UUM0B-T-894 compatible with standard I²C protocol stacks and drivers?
Yes, AT24C08D-UUM0B-T-894 is fully compliant with standard I²C specifications (UM10204), supporting START/STOP conditions, 7-bit addressing with R/W bit, ACK/NACK handshaking, and repeated START. It requires no custom driver logic - standard Linux i2c-dev, Arduino Wire, or STM32 HAL_I2C libraries work out-of-the-box with correct address (0xA0/0xA2 based on A2).
AT24C08D-UUM0B-T-894 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 4-XFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 8Kbit
- Memory Organization:
- 1K x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 1 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 4.5 µs
- Voltage - Supply:
- 1.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-WLCSP
AT24C08D-UUM0B-T-894 FAQ
1.How can I place an order for AT24C08D-UUM0B-T-894 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C08D-UUM0B-T-894 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 AT24C08D-UUM0B-T-894 reliable?
The price and inventory of AT24C08D-UUM0B-T-894 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C08D-UUM0B-T-894 is usually 5 days.
3.What payment methods are accepted for AT24C08D-UUM0B-T-894?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C08D-UUM0B-T-894 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C08D-UUM0B-T-894?
AT24C08D-UUM0B-T-894 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C08D-UUM0B-T-894 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 AT24C08D-UUM0B-T-894?
For technical support, including AT24C08D-UUM0B-T-894 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C08D-UUM0B-T-894 requirements.
6.How does Aetrix verify that AT24C08D-UUM0B-T-894 is sourced from the original manufacturer or authorized distributors?
All AT24C08D-UUM0B-T-894 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 AT24C08D-UUM0B-T-894 meets industry standards.
7.What is the process for return or replacement of AT24C08D-UUM0B-T-894?
All AT24C08D-UUM0B-T-894 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C08D-UUM0B-T-894, 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 AT24C08D-UUM0B-T-894 part is unused and in its original packaging.
Return procedure for AT24C08D-UUM0B-T-894:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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