My Inquiry
My Account
Microchip Technology 25AA080T/SN
- Part No.:
- 25AA080T/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
25AA080T/SN.pdf
- Description:
- IC EEPROM 8KBIT SPI 1MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,195
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
25AA080T/SN from Microchip Technology Inc. is an 8 Kbit SPI Serial EEPROM with 1024 × 8-bit organization, 1.8–5.5 V supply range, and industrial temperature support (−40°C to +85°C). It features 16-byte page write, 5 ms max internal write cycle time, hardware write protection via WP pin, and HOLD functionality for interrupt-safe serial communication - used in embedded system configuration storage, sensor calibration data retention, and firmware parameter backup.
For engineers reviewing the 25AA080T/SN datasheet, 25AA080T/SN pinout, 25AA080T/SN application, or 25AA080T/SN equivalent, key selection criteria include VCC compatibility down to 1.8 V, SPI clock frequency up to 1 MHz, endurance of 1 million write cycles, data retention exceeding 200 years, and SOIC-8 (150 mil) package suitability for space-constrained PCB layouts.
Technical Context
The 25AA080T/SN implements a standard SPI Mode 0,0 interface with separate SI (data in) and SO (data out) lines, requiring CS, SCK, and optional HOLD/WP control signals. Its internal architecture includes a status register with WIP, WEL, BP0/BP1, and WPEN bits enabling configurable block write protection (none, 1/4, 1/2, or full array) and hardware-based write disable when WP is low and WPEN is set.
Communication supports sequential read across address boundaries with automatic rollover at 03FFh, byte and page write operations (up to 16 bytes within same page), and pause/resume capability via HOLD pin asserted while SCK is low - ensuring deterministic timing behavior during host interrupt servicing without sequence restart.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 × 8-bit), sufficient for storing boot configuration, device ID, or calibration coefficients in resource-limited microcontroller systems |
| VCC Range | 1.8–5.5 V, enabling direct interfacing with 1.8 V, 3.3 V, and 5 V logic domains without level shifting |
| Max Clock Frequency | 1 MHz at VCC ≥ 4.5 V, supporting high-throughput programming in production test environments |
| Write Cycle Time | 5 ms maximum internal self-timed erase/write, eliminating need for external timing control or polling overhead |
| Endurance & Retention | 1 million write/erase cycles and >200 years data retention, validated for long-life industrial deployments |
| ESD Protection | 4 kV HBM on all pins, providing robustness against handling and board-level electrostatic discharge events |
| Operating Temperature | −40°C to +85°C (Industrial grade), qualified for use in automotive body control modules and industrial PLC I/O expansion cards |
Pinout & Package
25AA080T/SN is packaged in an 8-pin narrow SOIC (150 mil) with JEDEC MS-012 footprint, compatible with standard reflow soldering processes and automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Chip Select Input | Active-low enable signal; places device in standby (SO high-Z) when high, initiates command decoding when low |
| SO (Pin 2) | Serial Data Output | Tri-state output delivering memory contents on falling edge of SCK; enters high-impedance state when CS is high or HOLD is active |
| WP (Pin 3) | Write-Protect Pin | Hardware lock for nonvolatile status register bits when WPEN = 1; no effect on memory writes unless WPEN is set |
| VSS (Pin 4) | Ground Reference | Primary return path for all internal circuitry and I/O drivers; must be connected to system ground plane |
| SI (Pin 5) | Serial Data Input | Latches instruction, address, and data on rising edge of SCK; requires clean setup/hold timing per AC specs |
| SCK (Pin 6) | Serial Clock Input | Synchronizes all SPI transactions; rising edge clocks SI, falling edge updates SO; must remain low during HOLD assertion |
| HOLD (Pin 7) | Communication Pause Control | Halts ongoing SPI transfer without resetting internal state; SO tri-states immediately, allowing host to service higher-priority interrupts |
| VCC (Pin 8) | Supply Voltage | Power input for core logic and EEPROM array; bypass capacitor (0.1 µF) required near pin for stable operation |
Key Features
| Feature | Design Value |
|---|---|
| Low-power operation | 500 µA typical read current and 500 nA standby current enable battery-backed applications such as smart meters and portable medical devices |
| Block write protection | Configurable via BP0/BP1 bits to protect 0%, 25%, 50%, or 100% of memory - prevents accidental overwrites of critical firmware parameters |
| Hardware write-enable latch | WREN/WRDI commands ensure intentional writes only; latch resets automatically after power-up or successful write, preventing spurious programming |
| Hold functionality | Enables deterministic pause/resume of SPI transfers without loss of context - essential for real-time OS task preemption in motor control systems |
| High-reliability EEPROM | 1 M cycle endurance and >200-year data retention meet extended lifecycle requirements for industrial automation and aerospace subsystems |
Applications
| Industrial Sensor Calibration Storage | Embedded System Configuration Backup |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain coefficients for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile parameter store accessed during system boot and runtime recalibration routines via SPI interface. Use Value: Eliminates need for external trimming components and enables field-updatable calibration tables with guaranteed 200+ year data integrity. | Use Scenario: Preserving user-configured network settings, display brightness, and I/O mapping in human-machine interface (HMI) panels. IC Role / Device Role / Timing Role: SPI-configurable memory holding persistent system state between power cycles and firmware updates. Use Value: Supports zero-touch commissioning and reduces manufacturing test time by storing unique device identifiers and license keys. |
| Firmware Parameter Archiving | Motor Drive Fault Log Buffer |
Use Scenario: Recording operational history including last-known safe operating points, thermal derating curves, and safety-critical trip thresholds in servo drives. IC Role / Device Role / Timing Role: Dedicated EEPROM partition reserved for mission-critical firmware metadata accessible during bootloader initialization. Use Value: Enables fail-safe recovery after brownout events and supports predictive maintenance analytics through structured log persistence. | Use Scenario: Capturing timestamped fault codes (overcurrent, overtemperature, encoder loss) during transient motor stall conditions. IC Role / Device Role / Timing Role: High-reliability circular buffer implemented in EEPROM pages, written via interrupt-driven SPI DMA transfers. Use Value: Provides post-failure diagnostics without volatile RAM dependency, meeting IEC 61800-5-2 functional safety traceability requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPI Serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 25AA080A-I/SN | Successor with enhanced ESD rating (6 kV HBM), improved AC timing margins, and updated qualification per AEC-Q100 Grade 2 for automotive use | Required for new designs targeting automotive ECUs or industrial equipment requiring extended reliability validation | Select 25AA080A-I/SN when long-term supply assurance, automotive qualification, or tighter timing budgets are mandatory |
| AT25080B-SSHL-T | Same 8 Kbit capacity and SOIC-8 package but operates at 2.5–5.5 V; lacks HOLD pin and uses different status register bit layout | Suitable for cost-sensitive consumer electronics where interrupt pausing is unnecessary and voltage rail is ≥2.5 V | Choose AT25080B-SSHL-T only if system design omits HOLD usage and accepts alternate write-protection implementation |
Compared with 25AA080T/SN, the 25AA080A-I/SN offers superior long-term reliability and automotive qualification, while the AT25080B-SSHL-T trades HOLD functionality and 1.8 V support for lower unit cost in fixed-voltage applications.
Availability
25AA080T/SN is available at Aetrix Electronics and suitable for industrial sensor calibration storage, embedded system configuration backup, and firmware parameter archiving requiring stable component supply across multi-year production cycles.
Supply support for 25AA080T/SN 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 Inc. is a leading provider of microcontrollers, analog devices, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 25AA080T/SN belongs to Microchip's legacy SPI Serial EEPROM product line, designed specifically for low-voltage, low-power embedded systems requiring reliable nonvolatile storage with minimal pin count and software overhead.
FAQ
What is the minimum VCC required for reliable operation of the 25AA080T/SN?
The 25AA080T/SN supports operation down to 1.8 V, with verified DC and AC performance across the full industrial temperature range. At VCC = 1.8 V, maximum clock frequency is 1 MHz, and write cycle time remains ≤5 ms. This makes the 25AA080T/SN suitable for battery-powered applications where supply voltage may dip below 2.5 V during discharge cycles.
Does the 25AA080T/SN support SPI Mode 1,1 or only Mode 0,0?
The 25AA080T/SN is specified exclusively for SPI Mode 0,0 (CPOL = 0, CPHA = 0), where data is sampled on the rising edge of SCK and shifted out on the falling edge. Attempting Mode 1,1 communication will result in incorrect data capture or command misinterpretation. The 25AA080T/SN does not support alternate SPI modes.
How does the HOLD function interact with an ongoing write cycle in the 25AA080T/SN?
The HOLD pin has no effect on an internal write cycle once initiated; the 25AA080T/SN completes the write regardless of HOLD state. HOLD only suspends serial command/data transfers - it cannot pause or abort an active EEPROM programming operation. After completion, the device resumes normal SPI responsiveness.
Can the 25AA080T/SN be used in automotive applications requiring −40°C to +125°C operation?
No - the 25AA080T/SN is rated only for Industrial temperature range (−40°C to +85°C). For extended temperature operation, Microchip specifies the 25C080-E/SN variant, which supports −40°C to +125°C and requires 4.5–5.5 V VCC. Using 25AA080T/SN outside its rated temperature range risks data corruption and parametric failure.
What happens to the write enable latch after issuing a WRITE command to the 25AA080T/SN?
Upon successful completion of any WRITE, WRSR, or WRDI instruction, the write enable latch (WEL bit) in the 25AA080T/SN is automatically reset to '0'. This means each write operation requires a preceding WREN command, even within the same CS low period - unlike some EEPROMs that retain WEL state across multiple writes.
25AA080T/SN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 8Kbit
- Memory Organization:
- 1K x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 1 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- -
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
25AA080T/SN FAQ
1.How can I place an order for 25AA080T/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 25AA080T/SN 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 25AA080T/SN reliable?
The price and inventory of 25AA080T/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 25AA080T/SN is usually 5 days.
3.What payment methods are accepted for 25AA080T/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 25AA080T/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 25AA080T/SN?
25AA080T/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 25AA080T/SN 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 25AA080T/SN?
For technical support, including 25AA080T/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 25AA080T/SN requirements.
6.How does Aetrix verify that 25AA080T/SN is sourced from the original manufacturer or authorized distributors?
All 25AA080T/SN 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 25AA080T/SN meets industry standards.
7.What is the process for return or replacement of 25AA080T/SN?
All 25AA080T/SN units undergo pre-shipment inspection (PSI). If there is an issue with 25AA080T/SN, 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 25AA080T/SN part is unused and in its original packaging.
Return procedure for 25AA080T/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
25AA080T/SN Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
