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Microchip Technology AT24C08D-UUM0B-T
- Part No.:
- AT24C08D-UUM0B-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 4-XFBGA, WLCSP
- Datasheet:
-
AT24C08D-UUM0B-T.pdf
- Description:
- IC EEPROM 8KBIT I2C 1MHZ 4WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,105
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Product details
Overview
AT24C08D-UUM0B-T 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), 1 MHz Fast Mode Plus support, and hardware write-protection via WP pin - used for nonvolatile parameter storage in embedded controllers, power management units, and sensor calibration modules.
For engineers reviewing the AT24C08D-UUM0B-T datasheet, AT24C08D-UUM0B-T pinout, AT24C08D-UUM0B-T application, or AT24C08D-UUM0B-T equivalent, key selection criteria include VCC voltage range compatibility, I²C bus speed mode support (Standard/Fast/Fast Plus), page write capability (16-byte), endurance (1M cycles), and package-specific pin availability (e.g., WP and A2 presence in UDFN).
Technical Context
The AT24C08D-UUM0B-T implements a true I²C slave interface with bidirectional SDA and unidirectional SCL, supporting Standard (100 kHz), Fast (400 kHz), and Fast Mode Plus (1 MHz) timing under defined VCC conditions. Its internal architecture includes a 64-page × 16-byte memory array, hardware address comparator (A2 input), and integrated Schmitt-triggered inputs with noise filtering.
Write protection is enforced via dedicated WP pin logic: tied to VCC disables all writes; tied to GND enables full-array writes. The device features automatic power-on reset (POR) with tPUP = 100 µs delay before command acceptance and supports software reset via SCL clocking when SDA is stuck low.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1,024 × 8 bits) - sufficient for firmware configuration, calibration data, or device ID storage in space-constrained designs. |
| VCC Range | 1.7V to 3.6V - enables direct interfacing with 1.8V/2.5V/3.3V microcontrollers without level shifting. |
| I²C Speed Modes | 100 kHz (Std), 400 kHz (Fast), 1 MHz (FM+) - FM+ requires ≥2.5V VCC and enables faster firmware updates or logging. |
| Write Endurance | 1,000,000 cycles - supports frequent recalibration or runtime parameter logging in industrial sensors. |
| Data Retention | 100 years at 55°C - ensures long-term reliability in sealed or inaccessible deployments (e.g., utility meters, medical devices). |
| Active Current | ≤1.0 mA max at 3.6V - minimizes system power budget impact during active read/write operations. |
| Standby Current | ≤0.8 μA max at 3.6V - critical for battery-powered IoT nodes requiring multi-year operation. |
| Page Write Size | 16 bytes per page - allows partial writes without erasing full pages, reducing write latency and wear. |
Pinout & Package
AT24C08D-UUM0B-T is packaged in an 8-pad UDFN (2.0 mm × 1.6 mm, 0.5 mm pitch) with exposed pad. Pin 1 is NC (no connect); pins 2–8 are A2, GND, SDA, SCL, WP, VCC, and NC respectively (top view). The exposed pad may be connected to GND or left floating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No Connect | Unused; must remain unconnected or tied to GND per layout best practice. |
| 2 (A2) | Device Address Input | Hard-wired to GND/VCC to select one of two possible I²C addresses on shared bus; internally pulled down if floating. |
| 3 (GND) | Ground Reference | System ground return path; must be low-impedance connection for stable I²C signaling and noise immunity. |
| 4 (SDA) | Serial Data I/O | Open-drain bidirectional line; requires external pull-up resistor (≤10 kΩ) and wire-OR capability with other I²C slaves. |
| 5 (SCL) | Serial Clock Input | Master-generated clock; rising edge latches input data, falling edge outputs data; requires pull-up resistor. |
| 6 (WP) | Write-Protect Control | Hardware lock: VCC disables all writes; GND enables full-array writes; internally pulled down if floating. |
| 7 (VCC) | Power Supply | 1.7–3.6V supply; slew rate ≤0.1 V/µs required for reliable POR behavior. |
| 8 (NC) | No Connect | Unused; must remain unconnected or tied to GND per layout best practice. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-triggered inputs with spike suppression | Enables robust I²C communication in electrically noisy environments (e.g., motor drives, power supplies) without external RC filters. |
| 16-byte page write with partial write support | Reduces write time vs. byte-by-byte programming and avoids unnecessary page erases in dynamic data logging. |
| Self-timed write cycle ≤5 ms | Eliminates need for external write timing control; host can poll ACK or use fixed delay before next access. |
| ESD protection >4,000 V | Meets IEC 61000-4-2 Level 4 requirements, reducing need for external TVS diodes in handheld or field-deployed equipment. |
| Green RoHS-compliant packaging | Lead-free, halide-free UDFN meets global environmental compliance mandates without performance trade-offs. |
| Industrial temperature range (−40°C to +85°C) | Validated operation across automotive cabin, industrial PLC, and outdoor telecom applications without derating. |
Applications
| Smart Energy Meters | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Storing tariff schedules, meter calibration coefficients, and tamper-event logs over 10+ year field life. IC Role / Device Role / Timing Role: Nonvolatile configuration and event storage slave on I²C bus, accessed by ARM Cortex-M7 controller during boot and runtime. Use Value: 100-year data retention and 1M write cycles ensure accurate billing history and regulatory compliance without field replacement. | Use Scenario: Holding module identification, channel gain/offset trims, and firmware update staging data in modular I/O backplanes. IC Role / Device Role / Timing Role: Parameter storage peripheral on isolated I²C bus segment, synchronized to real-time OS task scheduler. Use Value: 1.7V–3.6V operation interfaces directly with 3.3V FPGA I/O banks; WP pin prevents accidental overwrite during hot-swap events. |
| Medical Infusion Pumps | Automotive Body Control Modules |
Use Scenario: Saving drug library metadata, dose history, and user preferences with fail-safe integrity checks. IC Role / Device Role / Timing Role: Safety-critical configuration store accessed only during initialization and maintenance mode via isolated I²C isolator. Use Value: Hardware write-protection (WP) and POR-controlled startup prevent corruption during brown-out or ESD transients. | Use Scenario: Storing seat position presets, mirror angles, and lighting profiles linked to vehicle VIN and user ID. IC Role / Device Role / Timing Role: Low-power EEPROM slave on LIN-to-I²C bridge, waking only during ignition-on configuration load. Use Value: 0.8 μA standby current extends battery life during vehicle sleep mode; FM+ support enables fast profile loading at ignition. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C08C-SSHM-T | Same 8-Kbit capacity and I²C interface, but in 8-lead SOIC package with identical pinout; lacks FM+ support (max 400 kHz). | SOIC footprint suits through-hole prototyping or legacy PCBs; lower speed limits high-throughput logging. | Select when board space allows SOIC and FM+ is unnecessary; no changes to firmware or schematic logic. |
| M95M01-RDW6TP/K | 8-Mbit SPI EEPROM (not I²C); 2.5–5.5V VCC; 10 MHz SPI clock; 5-ms write cycle; same endurance/retention. | Requires SPI interface and separate CS signal; incompatible with I²C-only microcontrollers. | Choose only if migrating to SPI architecture; not drop-in - demands firmware rewrite and layout revision. |
Compared with AT24C08C-SSHM-T, AT24C08D-UUM0B-T adds 1 MHz Fast Mode Plus for faster configuration loads and uses UDFN for space-constrained designs; versus M95M01-RDW6TP/K, it retains I²C compatibility but trades off higher density and wider VCC range for protocol simplicity and pin count reduction.
Availability
AT24C08D-UUM0B-T is available at Aetrix Electronics and suitable for smart energy meters, industrial PLC I/O modules, medical infusion pumps, and automotive body control modules requiring stable component supply across extended product lifecycles.
Supply support for AT24C08D-UUM0B-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 is a U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and memory products, with ISO 9001-certified quality systems and global distribution.
The AT24C08D belongs to Microchip's serial EEPROM product line, designed specifically for low-voltage, low-power, industrial-grade nonvolatile storage in resource-constrained embedded systems.
FAQ
What is the maximum I²C clock frequency supported by AT24C08D-UUM0B-T?
The AT24C08D-UUM0B-T supports up to 1 MHz in Fast Mode Plus, but only when VCC is between 2.5V and 3.6V. At 1.7V–2.4V, maximum speed is 400 kHz (Fast mode). Standard mode (100 kHz) operates across the full 1.7V–3.6V range. These limits are defined in the AC characteristics table of the official DS20006022A datasheet.
Does AT24C08D-UUM0B-T include hardware write protection?
Yes, AT24C08D-UUM0B-T includes a dedicated Write-Protect (WP) pin. When WP is driven to VCC, all write operations to the entire memory array are inhibited. When WP is at GND, normal writes are enabled. The pin is internally pulled down if left floating, but Microchip recommends hard-wiring it to a known state for reliability.
What package type is used for AT24C08D-UUM0B-T?
AT24C08D-UUM0B-T uses an 8-pad UDFN package (2.0 mm × 1.6 mm, 0.5 mm pitch) with exposed thermal pad. This compact, surface-mount package supports automated assembly and provides improved thermal performance over SOIC or TSSOP variants.
How many write cycles can AT24C08D-UUM0B-T endure?
AT24C08D-UUM0B-T is rated for 1,000,000 write cycles per memory location under standard operating conditions (TA = 25°C, VCC within 1.7V–3.6V). This endurance is validated per JEDEC standards and applies to both byte and page write modes.
Is AT24C08D-UUM0B-T compatible with 1.8V microcontrollers?
Yes, AT24C08D-UUM0B-T is fully compatible with 1.8V microcontrollers: it operates from 1.7V to 3.6V, supports I²C Standard (100 kHz) and Fast (400 kHz) modes at 1.8V, and features Schmitt-triggered inputs that tolerate slow-rising signals common in low-voltage systems.
AT24C08D-UUM0B-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 4-XFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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 FAQ
1.How can I place an order for AT24C08D-UUM0B-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C08D-UUM0B-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 AT24C08D-UUM0B-T reliable?
The price and inventory of AT24C08D-UUM0B-T 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 is usually 5 days.
3.What payment methods are accepted for AT24C08D-UUM0B-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C08D-UUM0B-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C08D-UUM0B-T?
AT24C08D-UUM0B-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C08D-UUM0B-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 AT24C08D-UUM0B-T?
For technical support, including AT24C08D-UUM0B-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C08D-UUM0B-T requirements.
6.How does Aetrix verify that AT24C08D-UUM0B-T is sourced from the original manufacturer or authorized distributors?
All AT24C08D-UUM0B-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 AT24C08D-UUM0B-T meets industry standards.
7.What is the process for return or replacement of AT24C08D-UUM0B-T?
All AT24C08D-UUM0B-T units undergo pre-shipment inspection (PSI). If there is an issue with AT24C08D-UUM0B-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 AT24C08D-UUM0B-T part is unused and in its original packaging.
Return procedure for AT24C08D-UUM0B-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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