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Microchip Technology AT25080A-10TU-1.8-T
- Part No.:
- AT25080A-10TU-1.8-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AT25080A-10TU-1.8-T.pdf
- Description:
- IC EEPROM 8KBIT SPI 20MHZ 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,076
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Product details
Overview
AT25080A-10TU-1.8-T from Microchip Technology (formerly Atmel) is an 8-Kbit SPI serial EEPROM organized as 1024 × 8 bits, operating from 1.8 V to 5.5 V, supporting 20 MHz clock rate at 5 V, featuring 32-byte page write mode and hardware/software write protection via WP pin and status register. It is used in industrial control systems for firmware parameter storage requiring low-voltage operation and long-term data retention.
For engineers reviewing the AT25080A-10TU-1.8-T datasheet, AT25080A-10TU-1.8-T pinout, AT25080A-10TU-1.8-T application, or AT25080A-10TU-1.8-T equivalent, this page delivers verified electrical specs, TSSOP-8 package details, SPI Mode 0/3 compatibility, block write protection configuration, and real-world use cases in embedded systems with constrained power budgets.
Technical Context
The AT25080A-10TU-1.8-T implements a synchronous SPI slave interface with separate SI/SO lines, MSB-first data transfer, and CS-driven selection. It uses an 8-bit instruction register with op-codes for WREN, WRDI, RDSR, WRSR, READ, and WRITE - all requiring CS falling edge initiation.
Its internal architecture supports automatic address increment during page writes, READY/BUSY flag reporting via RDSR (Bit 0), and nonvolatile BP0/BP1/WPEN bits enabling 0%, 25%, 50%, or 100% array protection. The HOLD pin suspends ongoing transfers without resetting sequence state, while WP pin blocks status register writes when WPEN = 1 and WP = low.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 words × 8 bits); sufficient for bootloader config, calibration tables, or device identity storage in space-constrained designs. |
| Supply Voltage Range | 1.8 V to 5.5 V; enables direct interfacing with 1.8 V logic families and backward compatibility with 3.3 V/5 V microcontrollers. |
| Max Clock Frequency | 20 MHz at VCC = 5 V; supports high-throughput parameter updates in real-time control loops. |
| Page Write Size | 32 bytes; minimizes write latency versus byte-write EEPROMs and reduces host MCU overhead during bulk configuration writes. |
| Write Endurance | 1 million cycles; ensures reliable field reprogramming over product lifetime in telemetry or logging applications. |
| Data Retention | 100 years at +25 °C; guarantees persistent storage of critical settings without battery backup. |
| Operating Temperature | –40 °C to +85 °C; qualified for industrial environments including motor drives and sensor nodes. |
Pinout & Package
AT25080A-10TU-1.8-T is packaged in an 8-lead TSSOP (8A2) with 4.4 mm body width, RoHS-compliant lead finish, and 0.65 mm pitch - optimized for automated PCB assembly and thermal performance in dense layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; must be driven low before SPI transaction begins and held stable during SCK activity. |
| SCK | Serial Clock | Input-only clock line; synchronizes all SI/SO data transfers; supports Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1). |
| SI | Serial Data Input | Master-to-slave data path; accepts op-codes, addresses, and write data on rising edge of SCK in Mode 0. |
| SO | Serial Data Output | Slave-to-master data path; outputs read data and status register contents on falling edge of SCK in Mode 0. |
| GND | Ground Reference | Primary return path for VCC and I/O signals; requires low-impedance connection to system ground plane. |
| VCC | Power Supply | Single supply input; supports 1.8–5.5 V operation; bypass capacitor (0.1 µF) recommended near pin. |
| WP | Write Protect | Hardware lock for status register; disables writes to BP0/BP1/WPEN when WP = low and WPEN = 1. |
| HOLD | Communication Suspend | Pauses active SPI transfer without resetting internal address counter; resumes on rising edge while SCK is low. |
Key Features
| Feature | Design Value |
|---|---|
| Block Write Protection | Configurable 0%/25%/50%/100% memory locking via nonvolatile BP0/BP1 bits - prevents accidental overwrite of boot code or calibration data. |
| Self-timed Write Cycle | Max 5 ms internal erase/write; eliminates need for external timing control or polling delay beyond RDSR readiness check. |
| Dual Write Enable | Combines software WREN instruction with hardware WP pin - provides layered security against unintended writes during power-up or noise events. |
| Low-Voltage Operation | Guaranteed functionality down to 1.8 V - enables direct integration with ultra-low-power MCUs like ARM Cortex-M0+ without level-shifting. |
| HOLD Functionality | Preserves serial sequence state during interrupt servicing - avoids reinitialization overhead when host MCU handles time-critical tasks. |
Applications
| Industrial Sensor Calibration | Medical Device Configuration |
|---|---|
Use Scenario: Storing factory-calibrated gain/offset coefficients and temperature compensation curves for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile parameter repository accessed during power-on initialization and runtime recalibration routines. Use Value: Enables field-upgradable calibration without firmware reflashing; 100-year retention ensures accuracy across equipment lifecycle. | Use Scenario: Holding user-selectable therapy parameters (e.g., infusion rate limits, alarm thresholds) in portable insulin pumps and dialysis monitors. IC Role / Device Role / Timing Role: Secure, low-power configuration store accessed via SPI during GUI navigation and safety-critical setup sequences. Use Value: WP pin + BP bits prevent unauthorized modification of life-safety settings; 1.8 V operation extends battery life between charges. |
| Automotive Body Control Module | Smart Energy Metering |
Use Scenario: Recording door lock/unlock history, mirror position presets, and lighting profiles in vehicle BCMs compliant with AEC-Q100 Grade 3. IC Role / Device Role / Timing Role: SPI-configurable memory node on LIN or CAN gateway subsystems, updated during dealer diagnostics. Use Value: –40 °C to +85 °C rating ensures reliability under hood temperature cycling; 1M endurance supports daily usage over 10+ years. | Use Scenario: Storing tariff schedules, billing cycle counters, and tamper-detection logs in DIN-rail mounted electricity meters deployed globally. IC Role / Device Role / Timing Role: Secure data logger interfaced to metrology SoC via isolated SPI bus, retaining data through mains brownouts. Use Value: Block protection isolates tariff tables from firmware update routines; 5 ms write time enables fast log commits during grid transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95080-DRMN6TP/K | STMicroelectronics 8-Kbit SPI EEPROM; identical 1.8–5.5 V range and 20 MHz max clock, but uses different status register bit mapping for BP bits and lacks HOLD pin. | Requires firmware adaptation for BP configuration and no suspend capability during SPI transfers. | Select if HOLD functionality is unused and ST's qualification support (e.g., automotive AEC-Q100) is preferred. |
| BR24G08NUX-10 | Rohm 8-Kbit SPI EEPROM; supports 1.6–5.5 V, includes built-in write protect latch, but only offers 10 MHz max speed at 1.8 V and no hardware WP pin. | Limited bandwidth for high-speed parameter updates; relies solely on software WREN/WRDI for protection. | Choose for ultra-low-voltage systems (<1.8 V) where 10 MHz suffices and board space allows larger SOIC-8 footprint. |
Compared with M95080-DRMN6TP/K and BR24G08NUX-10, the AT25080A-10TU-1.8-T uniquely combines HOLD pin support, standardized BP bit layout per JEDEC, and guaranteed 20 MHz operation across full 1.8–5.5 V range - making it optimal for industrial designs requiring deterministic SPI pause/resume and robust dual-layer write security.
Availability
AT25080A-10TU-1.8-T is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device configuration, automotive body control modules, and smart energy metering requiring stable component supply and long-term obsolescence management.
Supply support for AT25080A-10TU-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 is a global semiconductor company specializing in microcontrollers, analog devices, and memory solutions, with broad industrial and automotive qualifications.
The AT25080A-10TU-1.8-T belongs to Microchip's legacy serial EEPROM product line, designed specifically for reliable, low-power nonvolatile storage in resource-constrained embedded systems interfacing directly with SPI-capable microcontrollers.
FAQ
What is the maximum clock frequency supported by the AT25080A-10TU-1.8-T at 1.8 V?
The AT25080A-10TU-1.8-T supports up to 5 MHz at 1.8 V, as specified in Table 1-3 AC Characteristics. This is lower than its 20 MHz maximum at 5 V but ensures robust timing margins and signal integrity in ultra-low-voltage applications such as battery-powered IoT sensors.
Does the AT25080A-10TU-1.8-T require an external pull-up resistor on the SO pin?
No, the AT25080A-10TU-1.8-T features an internally controlled tri-state output driver on the SO pin. When CS is high or during HOLD assertion, SO enters high-impedance state without needing external pull-ups - simplifying PCB design and reducing BOM count.
How does the WP pin interact with the WPEN bit in the status register of the AT25080A-10TU-1.8-T?
When WPEN = 1, the WP pin actively blocks writes to the status register (including BP0/BP1 bits) if pulled low. If WPEN = 0, the WP pin is ignored entirely, allowing full status register access regardless of WP voltage - enabling flexible system-level protection schemes during manufacturing or field service.
Can the AT25080A-10TU-1.8-T be used in SPI Mode 3 (CPOL=1, CPHA=1)?
Yes, the AT25080A-10TU-1.8-T explicitly supports both SPI Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1), as stated in its Features section. Designers must configure the host controller accordingly - Mode 3 is often selected to match legacy microcontroller peripherals with inverted clock polarity requirements.
What is the write cycle time for a single byte versus a full 32-byte page on the AT25080A-10TU-1.8-T?
Both single-byte and 32-byte page writes complete within a maximum of 5 ms, as the AT25080A-10TU-1.8-T performs self-timed internal erase-and-program operations. Page writes improve host efficiency by reducing command overhead, but do not reduce total programming latency per byte - the 5 ms bound applies to any write operation.
AT25080A-10TU-1.8-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:
- Obsolete
- 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
AT25080A-10TU-1.8-T FAQ
1.How can I place an order for AT25080A-10TU-1.8-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25080A-10TU-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 AT25080A-10TU-1.8-T reliable?
The price and inventory of AT25080A-10TU-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 AT25080A-10TU-1.8-T is usually 5 days.
3.What payment methods are accepted for AT25080A-10TU-1.8-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25080A-10TU-1.8-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25080A-10TU-1.8-T?
AT25080A-10TU-1.8-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25080A-10TU-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 AT25080A-10TU-1.8-T?
For technical support, including AT25080A-10TU-1.8-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25080A-10TU-1.8-T requirements.
6.How does Aetrix verify that AT25080A-10TU-1.8-T is sourced from the original manufacturer or authorized distributors?
All AT25080A-10TU-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 AT25080A-10TU-1.8-T meets industry standards.
7.What is the process for return or replacement of AT25080A-10TU-1.8-T?
All AT25080A-10TU-1.8-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25080A-10TU-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 AT25080A-10TU-1.8-T part is unused and in its original packaging.
Return procedure for AT25080A-10TU-1.8-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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