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Microchip Technology AT25080B-XHL-T
- Part No.:
- AT25080B-XHL-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AT25080B-XHL-T.pdf
- Description:
- IC EEPROM 8KBIT SPI 20MHZ 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,417
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Product details
Overview
AT25080B-XHL-T from Microchip Technology is an 8-Kbit SPI Serial EEPROM organized as 1,024 × 8 bits, operating from 1.8V to 5.5V with industrial temperature range (−40°C to +85°C), 20 MHz max clock rate at 5V, and 32-byte page write capability. It serves as nonvolatile configuration storage in microcontroller-based systems requiring reliable, low-power data retention for boot parameters, calibration data, or device identity.
For engineers reviewing the AT25080B-XHL-T datasheet, AT25080B-XHL-T pinout, AT25080B-XHL-T application, or AT25080B-XHL-T equivalent, key selection criteria include SPI Mode 0/3 compatibility, hardware/software write protection via WP pin and STATUS register, 1M write endurance, 100-year data retention, and support for SOIC-8 packaging with verified 8-pin functional mapping.
Technical Context
The AT25080B-XHL-T implements a synchronous SPI slave interface with fixed MSB-first serial protocol, supporting both Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1). Its internal architecture includes a high-voltage generation circuit for EEPROM programming, address register and counter, and dedicated write protection control logic tied to the STATUS register's WPEN, BP1, and BP0 bits.
It features dual-level write protection: hardware-based via the WP pin (active-low, conditional on WPEN bit), and software-configurable block protection (1/4, 1/2, or full array). The HOLD pin enables real-time suspension of ongoing SPI transfers without resetting the command sequence, while maintaining internal state integrity during host arbitration delays.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbits (1,024 × 8), sufficient for firmware ID, sensor calibration tables, or small configuration profiles |
| Supply Voltage Range | 1.8V to 5.5V - supports direct interfacing with 1.8V, 3.3V, and 5V microcontrollers without level shifting |
| Max Clock Frequency | 20 MHz at VCC ≥ 4.5V - enables fast read/write bursts in time-critical embedded applications |
| Page Write Size | 32 bytes - minimizes write latency per transaction and reduces wear on adjacent memory locations |
| Write Endurance | 1,000,000 cycles - ensures long-term reliability in field-updatable systems with frequent parameter logging |
| Data Retention | 100 years at 55°C - guarantees persistent storage integrity across product lifecycle without refresh |
| Operating Temperature | −40°C to +85°C - qualified for industrial automation, automotive body electronics, and outdoor IoT nodes |
Pinout & Package
AT25080B-XHL-T is packaged in an 8-lead SOIC (Small Outline Integrated Circuit) with standard JEDEC MS-012AC footprint (5.3 mm × 5.3 mm, 1.27 mm pitch). This surface-mount package supports automated PCB assembly and provides mechanical robustness for reflow-soldered industrial designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; must be driven low before SCK edges to initiate any SPI command sequence |
| SO | Serial Data Output | Tri-state output delivering MSB-first data on falling SCK edge; high-impedance when CS high or HOLD active |
| WP | Write-Protect | Hardware lock for STATUS register writes when WPEN=1; allows system-level write disable independent of software state |
| GND | Ground Reference | Primary return path for VCC supply and all I/O signals; requires low-impedance connection to PCB ground plane |
| SI | Serial Data Input | MSB-first input for opcodes, addresses, and write data; sampled on rising SCK edge after CS assertion |
| SCK | Serial Clock | Master-generated clock synchronizing all SPI transfers; idle polarity depends on selected mode (0 or 3) |
| HOLD | Suspend Control | Pauses ongoing SPI transfer without resetting internal state; requires SCK low during assertion/deassertion |
| VCC | Power Supply | Single-supply input (1.8–5.5V); internal POR circuit enforces 100 µs delay before accepting first instruction |
Key Features
| Feature | Design Value |
|---|---|
| SPI Mode 0 & 3 Support | Enables interoperability with diverse microcontroller SPI peripherals without custom timing adaptation |
| 32-Byte Page Write | Reduces total write time vs. byte-by-byte programming and limits EEPROM cell wear per operation |
| Block Write Protection | Configurable 1/4, 1/2, or full-array lock via STATUS register bits - prevents accidental overwrites of critical sectors |
| WP Pin + Software Lock | Dual-layer protection: hardware WP pin disables STATUS writes when WPEN=1, while WPEN=0 permits full register access |
| Self-Timed Write Cycle | Internal timing eliminates need for external delay loops; maximum 5 ms completion ensures deterministic firmware flow |
| Green Packaging | RoHS-compliant, halide-free SOIC-8 meets global environmental compliance requirements for industrial shipments |
Applications
| Industrial Sensor Node | Medical Device Calibration |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain coefficients and sensor linearization tables in battery-powered wireless sensors. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed at power-up and during field recalibration routines. Use Value: Enables accurate analog measurements across temperature ranges without requiring external NVM or MCU flash partitioning. |
Use Scenario: Holding patient-specific therapy parameters and device serial traceability data in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure, tamper-resistant memory for regulatory-mandated audit logs and calibration history. Use Value: Meets IEC 62304 data integrity requirements via 1M-cycle endurance and 100-year retention under clinical storage conditions. |
| Automotive Body Control Module | Smart Home Gateway |
Use Scenario: Saving user preferences (lighting scenes, mirror positions) and fault codes in 12V vehicle subsystems. IC Role / Device Role / Timing Role: Low-voltage EEPROM interfaced directly to 3.3V CAN microcontrollers for infotainment-linked modules. Use Value: Operates reliably across −40°C to +85°C ambient with 1.8V–5.5V supply tolerance, eliminating need for voltage translators. |
Use Scenario: Storing Wi-Fi credentials, OTA update metadata, and Zigbee network keys in always-on residential hubs. IC Role / Device Role / Timing Role: Secure boot-time configuration store with hardware WP pin tied to system security controller. Use Value: Prevents unauthorized firmware modification via dual-lock mechanism (WP pin + STATUS register BP bits). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPI EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95080-DRMN6TP/K | 8-Kbit SPI EEPROM, same 1.8–5.5V range and SOIC-8 package, but rated only to +70°C (commercial temp) | Lacks industrial temperature qualification; unsuitable for under-hood or outdoor deployments | Select when cost sensitivity outweighs extended temperature needs and board space allows same footprint |
| 25AA080C-I/SN | Microchip's pin-compatible successor with enhanced ESD rating (>4 kV HBM) and tighter tWC spec (typ. 3 ms) | Same functionality and pinout; offers improved robustness in noisy industrial environments | Prefer for new designs requiring higher immunity or faster write confirmation in time-constrained firmware |
Compared with M95080-DRMN6TP/K, AT25080B-XHL-T delivers guaranteed −40°C to +85°C operation essential for harsh environments; versus 25AA080C-I/SN, it offers proven field reliability with identical register map but slightly longer max write cycle (5 ms vs. 3 ms typ), making it ideal for legacy-compatible upgrades where timing margins are constrained.
Availability
AT25080B-XHL-T is available at Aetrix Electronics and suitable for industrial sensor nodes, medical calibration systems, automotive body control modules, smart home gateways, and IoT edge devices requiring stable component supply across multi-year production cycles.
Supply support for AT25080B-XHL-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 company specializing in microcontrollers, analog devices, and memory solutions, with a focus on embedded control and connectivity.
The AT25080B-XHL-T belongs to Microchip's AT25xxx SPI EEPROM family, engineered for low-power, high-reliability nonvolatile storage in resource-constrained embedded systems where data integrity and long-term retention are critical.
FAQ
What is the maximum SPI clock frequency supported by the AT25080B-XHL-T?
The AT25080B-XHL-T supports up to 20 MHz SCK frequency when VCC is 4.5V–5.5V, 10 MHz at 2.5V–5.5V, and 5 MHz across the full 1.8V–5.5V range. These ratings are specified in Table 4-3 of the DS20006244A datasheet and reflect guaranteed AC timing performance under industrial temperature conditions. Designers must observe corresponding tWH/tWL minima per voltage grade to ensure setup/hold compliance.
Does the AT25080B-XHL-T require external pull-up resistors on its control pins?
Yes - the AT25080B-XHL-T requires a pull-up resistor (≤10 kΩ) on the CS pin to ensure proper power-up behavior, as specified in Section 2.1 of the datasheet. While WP and HOLD may be pulled high or low depending on system protection strategy, leaving them floating is not recommended. SO is internally tri-stated and does not require a pull-up unless shared on a multi-slave bus.
How does write protection work on the AT25080B-XHL-T?
The AT25080B-XHL-T implements two-tier write protection: hardware-based via the WP pin (active-low, effective only when WPEN=1 in STATUS register), and software-configurable block protection (BP1/BP0 bits) locking 1/4, 1/2, or full memory array. WP going low during a WRSR command interrupts the write, but has no effect once internal programming begins. WPEN=0 disables WP pin functionality entirely.
What is the pin compatibility status of AT25080B-XHL-T with other packages in the AT25080B family?
The AT25080B-XHL-T uses an 8-lead SOIC package with JEDEC MS-012AC outline. Its pinout (CS/SO/WP/GND/SI/SCK/HOLD/VCC) matches identically across all AT25080B variants including TSSOP, UDFN, XDFN, and VFBGA packages - enabling drop-in replacement at layout level when mechanical constraints allow. Package-specific thermal and soldering guidelines still apply.
Can the AT25080B-XHL-T be used with SPI Mode 1 or Mode 2 controllers?
No - the AT25080B-XHL-T explicitly supports only SPI Modes 0 (CPOL=0, CPHA=0) and 3 (CPOL=1, CPHA=1), as confirmed in Section 1 of the datasheet. Modes 1 and 2 are incompatible due to mismatched SCK edge sampling (rising vs. falling) and data phase alignment. Attempting use with unsupported modes will result in corrupted reads/writes or communication failure.
AT25080B-XHL-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- 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:
- SPI
- Clock Frequency:
- 20 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- -
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
AT25080B-XHL-T FAQ
1.How can I place an order for AT25080B-XHL-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25080B-XHL-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 AT25080B-XHL-T reliable?
The price and inventory of AT25080B-XHL-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25080B-XHL-T is usually 5 days.
3.What payment methods are accepted for AT25080B-XHL-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25080B-XHL-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25080B-XHL-T?
AT25080B-XHL-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25080B-XHL-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 AT25080B-XHL-T?
For technical support, including AT25080B-XHL-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25080B-XHL-T requirements.
6.How does Aetrix verify that AT25080B-XHL-T is sourced from the original manufacturer or authorized distributors?
All AT25080B-XHL-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 AT25080B-XHL-T meets industry standards.
7.What is the process for return or replacement of AT25080B-XHL-T?
All AT25080B-XHL-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25080B-XHL-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 AT25080B-XHL-T part is unused and in its original packaging.
Return procedure for AT25080B-XHL-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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