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Microchip Technology AT25080A-10PU-1.8

Name: AT25080A-10PU-1.8
Brand: Microchip Technology
SKU: AT25080A-10PU-1.8
Price: 2.40 USD
Availability: InStock
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Part No.:: AT25080A-10PU-1.8

Manufacturer:: Microchip Technology

Category:: Memory

Package:: 8-DIP (0.300", 7.62mm)

Datasheet:: AT25080A-10PU-1.8.pdf

Description:: IC EEPROM 8KBIT SPI 20MHZ 8DIP

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Product details

Overview

AT25080A-10PU-1.8 from Microchip Technology (formerly Atmel) is a 8-Kbit SPI serial EEPROM organized as 1024 × 8 bits, supporting 1.8V to 5.5V supply operation, 20 MHz clock rate at 5V, 32-byte page write, and hardware/software write protection. It serves as nonvolatile configuration storage in industrial controllers, power management units, and embedded sensor nodes requiring low-voltage reliability.

For engineers reviewing the AT25080A-10PU-1.8 datasheet, AT25080A-10PU-1.8 pinout, AT25080A-10PU-1.8 application, or AT25080A-10PU-1.8 equivalent, key selection criteria include V_CC range compatibility (1.8–5.5 V), SPI Mode 0/3 support, block write protection granularity (1/4, 1/2, full array), HOLD/CS timing margins, and JEDEC SOIC-8 package footprint constraints.

Technical Context

The AT25080A-10PU-1.8 operates as a slave SPI peripheral with dedicated SI/SO lines, CS-controlled selection, and synchronous serial communication compliant with SPI Modes 0 and 3. Its internal architecture includes an 8-bit instruction register, nonvolatile status register (WPEN, BP1/BP0, WEN, RDY), and automatic address incrementing during page writes.

Write operations require explicit WREN instruction prior to WRITE or WRSR; self-timed write cycles complete in ≤5 ms with no external erase step. Hardware data protection is implemented via the WP pin (active-low, conditional on WPEN bit) and HOLD pin for mid-transaction suspension without sequence reset.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Size	8 Kbit (1024 × 8), sufficient for firmware boot flags, calibration coefficients, or device ID storage in space-constrained designs.
Supply Voltage Range	1.8 V to 5.5 V - enables direct interface with 1.8V logic, 3.3V microcontrollers, and 5V legacy systems without level-shifting.
Max Clock Frequency	20 MHz at V_CC = 5V - supports high-throughput configuration loading in real-time control loops.
Page Write Size	32 bytes - minimizes write latency versus byte-write EEPROMs; allows efficient bulk parameter updates.
Endurance & Retention	1 million write cycles / 100 years data retention - validated for long-life industrial deployments with frequent field updates.
Operating Temperature	–40°C to +85°C - qualified for industrial ambient environments including motor drives and outdoor telemetry units.
Write Protection	Hardware (WP pin) + software (status register BP0/BP1) - enables layered security: full-array lock during firmware update, partial lock for runtime-critical registers.

Pinout & Package

AT25080A-10PU-1.8 is packaged in an 8-lead JEDEC SOIC (8S1), 0.150" wide body, RoHS-compliant green package with NiPdAu lead finish. Pin pitch is 1.27 mm; body dimensions are 4.90 mm × 3.90 mm × 1.75 mm (L × W × H).

Pin/Terminal	Circuit Role	Design Meaning
CS	Chip Select	Active-low enable: pulls device out of standby; falling edge initiates instruction latch; must remain low during full SPI transaction.
SCK	Serial Clock	Master-generated clock (≤20 MHz @ 5V); defines timing for SI sampling and SO output; supports Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1).
SI	Serial Data Input	Receives op-codes (WREN, WRITE, RDSR), addresses (A9–A0), and data (D7–D0); MSB-first, sampled on SCK rising edge in Mode 0.
SO	Serial Data Output	Drives read data, status register bits, or high-impedance when deselected or during HOLD; output valid within 20 ns (1.8V) of SCK edge.
GND	Ground Reference	Primary return path for V_CC, I/O, and internal logic; requires low-impedance PCB plane connection to minimize noise coupling into SPI signals.
V_CC	Power Supply	Single-supply input (1.8–5.5 V); decoupling capacitor (0.1 µF ceramic) required within 5 mm of pin per layout guidelines.
WP	Write Protect	Hardware lock: disables status register writes when low and WPEN=1; allows system-level write disable independent of software state.
HOLD	Communication Suspend	Pauses ongoing SPI transfer (e.g., during MCU interrupt servicing) without resetting address counter; requires SCK low before assertion.

Key Features

Feature	Design Value
1.8V–5.5V Operation	Eliminates need for separate voltage regulators in mixed-supply systems; supports direct connection to 1.8V FPGA I/O banks or 3.3V ARM Cortex-M peripherals.
32-Byte Page Write	Reduces total programming time by >90% vs. byte-write EEPROMs for multi-byte parameter sets (e.g., 16-channel ADC calibration tables).
Block Write Protection	Configurable via status register to lock top 1/4 (0300h–03FFh), 1/2 (0200h–03FFh), or full array - prevents accidental overwrite of critical boot code or security keys.
HOLD Pin Functionality	Enables deterministic SPI pause/resume without address loss or re-synchronization overhead - essential for real-time OS context switching with minimal jitter.
Self-Timed Write Cycle	Guarantees ≤5 ms completion with no external timing control; RDSR polling (RDY bit) provides precise readiness detection for deterministic firmware flow.

Applications

Industrial PLC Configuration Storage	Smart Sensor Calibration Memory
Use Scenario: Storing I/O mapping tables, PID tuning parameters, and alarm thresholds in programmable logic controllers deployed in factory automation cabinets. IC Role / Device Role / Timing Role: Nonvolatile configuration EEPROM interfaced to ARM-based PLC CPU via SPI bus; accessed during cold start and runtime parameter updates. Use Value: Enables field-upgradable control logic without firmware reflashing; 100-year data retention ensures settings survive 15+ year equipment lifecycles.	Use Scenario: Holding temperature-compensated offset/gain coefficients and sensor-specific identification data in MEMS pressure sensors used in HVAC and building management systems. IC Role / Device Role / Timing Role: Calibration data repository accessed during sensor power-up and periodic self-test sequences; read-only during normal measurement cycles. Use Value: Achieves ±0.1% full-scale accuracy across –25°C to +70°C; block protection prevents corruption of factory-trimmed values during field service.
Power Supply Firmware Parameter Bank	Medical Device Usage Log Storage
Use Scenario: Storing adaptive voltage/current regulation profiles and fault history logs in digitally controlled AC/DC power supplies for telecom infrastructure. IC Role / Device Role / Timing Role: SPI-configurable memory co-located with digital power controller (e.g., UCD3138); updated after each thermal recalibration cycle. Use Value: Supports dynamic efficiency optimization across load ranges; 1M endurance withstands daily recalibration over 10+ years of operation.	Use Scenario: Recording sterilization cycles, usage hours, and error codes in portable infusion pumps and diagnostic handhelds subject to FDA 21 CFR Part 11 audit requirements. IC Role / Device Role / Timing Role: Tamper-evident event logger with hardware write protection enabled during clinical operation; accessed only by authenticated service mode. Use Value: Meets medical device traceability mandates; WP pin hardwired to ground with WPEN=0 allows initial programming, then permanent lock post-certification.

Industrial PLC Configuration Storage

Smart Sensor Calibration Memory

Use Scenario: Storing I/O mapping tables, PID tuning parameters, and alarm thresholds in programmable logic controllers deployed in factory automation cabinets.

IC Role / Device Role / Timing Role: Nonvolatile configuration EEPROM interfaced to ARM-based PLC CPU via SPI bus; accessed during cold start and runtime parameter updates.

Use Value: Enables field-upgradable control logic without firmware reflashing; 100-year data retention ensures settings survive 15+ year equipment lifecycles.

Use Scenario: Holding temperature-compensated offset/gain coefficients and sensor-specific identification data in MEMS pressure sensors used in HVAC and building management systems.

IC Role / Device Role / Timing Role: Calibration data repository accessed during sensor power-up and periodic self-test sequences; read-only during normal measurement cycles.

Use Value: Achieves ±0.1% full-scale accuracy across –25°C to +70°C; block protection prevents corruption of factory-trimmed values during field service.

Power Supply Firmware Parameter Bank

Medical Device Usage Log Storage

Use Scenario: Storing adaptive voltage/current regulation profiles and fault history logs in digitally controlled AC/DC power supplies for telecom infrastructure.

IC Role / Device Role / Timing Role: SPI-configurable memory co-located with digital power controller (e.g., UCD3138); updated after each thermal recalibration cycle.

Use Value: Supports dynamic efficiency optimization across load ranges; 1M endurance withstands daily recalibration over 10+ years of operation.

Use Scenario: Recording sterilization cycles, usage hours, and error codes in portable infusion pumps and diagnostic handhelds subject to FDA 21 CFR Part 11 audit requirements.

IC Role / Device Role / Timing Role: Tamper-evident event logger with hardware write protection enabled during clinical operation; accessed only by authenticated service mode.

Use Value: Meets medical device traceability mandates; WP pin hardwired to ground with WPEN=0 allows initial programming, then permanent lock post-certification.

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial EEPROM applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
M95080-DRMN3TP/K	STMicroelectronics 8-Kbit SPI EEPROM; identical 1.8–5.5 V range, 20 MHz max clock, SOIC-8 package; differs in HOLD timing (tHD/tCD = 10 ns vs. 20 ns) and WP behavior (no WPEN bit - always hardware-enabled).	Lacks software-configurable block protection; requires external logic for partial-array lock; suitable where full-array write disable suffices.	Select when WP simplicity is prioritized over granular protection; verify HOLD timing compliance with host MCU SPI controller.
BR24G08NUX-10	Rohm 8-Kbit SPI EEPROM; supports 1.6–5.5 V, 10 MHz max clock (1.8V), TSSOP-8 package; includes unique ID register and enhanced ESD (4 kV HBM) but no HOLD pin.	No suspend capability - interrupts require full SPI restart; unique ID aids anti-counterfeiting but adds software overhead.	Choose for cost-sensitive consumer applications where HOLD is unused and lower clock speed is acceptable; avoid in real-time deterministic systems.

Compared with M95080-DRMN3TP/K and BR24G08NUX-10, the AT25080A-10PU-1.8 offers superior flexibility through programmable block protection (BP0/BP1), guaranteed HOLD functionality for deterministic interrupt handling, and tighter AC timing at 1.8V operation - making it optimal for industrial and medical designs requiring robust, field-upgradeable nonvolatile storage.

Availability

AT25080A-10PU-1.8 is available at Aetrix Electronics and suitable for industrial PLCs, smart sensor modules, and medical device loggers requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for AT25080A-10PU-1.8 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 leader in microcontroller, analog, FPGA, and memory solutions, delivering scalable, secure, and energy-efficient semiconductor products for industrial, automotive, and communications markets.

The AT25080A-10PU-1.8 belongs to Microchip's AT25xxx family of SPI serial EEPROMs, engineered for reliable nonvolatile data storage in resource-constrained embedded systems where low-voltage operation, fast write performance, and configurable data protection are critical.

FAQ

What is the minimum supply voltage required for reliable operation of the AT25080A-10PU-1.8?

The AT25080A-10PU-1.8 is specified for reliable operation down to 1.8 V across the full industrial temperature range (–40°C to +85°C). Below this threshold, read/write functionality is not guaranteed per datasheet characterization; design margin should include 5% tolerance on regulator output and PCB trace drop.

Does the AT25080A-10PU-1.8 support SPI Mode 0 exclusively, or are other modes compatible?

The AT25080A-10PU-1.8 supports both SPI Mode 0 (CPOL = 0, CPHA = 0) and Mode 3 (CPOL = 1, CPHA = 1), as explicitly stated in its features list. Mode 0 is the default and most widely tested configuration; Mode 3 compatibility enables interoperability with legacy controllers requiring inverted clock polarity.

How does the HOLD pin function during an active write cycle in the AT25080A-10PU-1.8?

The HOLD pin cannot suspend an internal write cycle once initiated; it only affects serial communication (read/write instructions). During an active write, only RDSR is accepted - HOLD assertion has no effect on the ongoing t_WC (≤5 ms) self-timed operation. HOLD is effective only between instructions or during read sequences.

Can the AT25080A-10PU-1.8 be used in automotive applications?

The AT25080A-10PU-1.8 is rated for industrial temperature (–40°C to +85°C) and is not AEC-Q100 qualified. While it may function in under-hood or infotainment environments, Microchip explicitly lists "Available in Automotive" for *other variants* (e.g., AT25080B-MAU-1.8); the AT25080A-10PU-1.8 is intended for industrial/commercial use only.

What happens if more than 32 bytes are written in a single page write command to the AT25080A-10PU-1.8?

If more than 32 bytes are transmitted in one WRITE instruction, the internal address counter rolls over within the current page (e.g., from address 031Fh back to 0300h), overwriting previously written data in that 32-byte boundary. No error is generated; the device completes the write cycle normally, resulting in corrupted data unless firmware enforces strict byte-count limits.

AT25080A-10PU-1.8 Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

Package/Case:: 8-DIP (0.300", 7.62mm)

Packaging:: Tube

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:: Through Hole

Supplier Device Package:: 8-PDIP

AT25080A-10PU-1.8 FAQ

1.How can I place an order for AT25080A-10PU-1.8 through Aetrix?

Please submit a Request for Quotation (RFQ) for AT25080A-10PU-1.8 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-10PU-1.8 reliable?

The price and inventory of AT25080A-10PU-1.8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25080A-10PU-1.8 is usually 5 days.

3.What payment methods are accepted for AT25080A-10PU-1.8?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25080A-10PU-1.8 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AT25080A-10PU-1.8?

AT25080A-10PU-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AT25080A-10PU-1.8 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-10PU-1.8?

For technical support, including AT25080A-10PU-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25080A-10PU-1.8 requirements.

6.How does Aetrix verify that AT25080A-10PU-1.8 is sourced from the original manufacturer or authorized distributors?

All AT25080A-10PU-1.8 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-10PU-1.8 meets industry standards.

7.What is the process for return or replacement of AT25080A-10PU-1.8?

All AT25080A-10PU-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT25080A-10PU-1.8, 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-10PU-1.8 part is unused and in its original packaging.

Return procedure for AT25080A-10PU-1.8:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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