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Microchip Technology 25AA080A-I/MS
- Part No.:
- 25AA080A-I/MS
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
25AA080A-I/MS.pdf
- Description:
- IC EEPROM 8KBIT SPI 10MHZ 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,418
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Product details
Overview
25AA080A-I/MS from Microchip Technology Inc. is an 8 Kbit SPI Serial EEPROM with 1024 × 8-bit organization, 1.8–5.5 V supply range, and 16-byte page write capability. It operates across industrial temperature (−40°C to +85°C) in an 8-lead MSOP package and supports up to 10 MHz clock frequency. This device serves as nonvolatile configuration storage in microcontroller-based systems requiring low-power, reliable data retention.
For engineers reviewing the 25AA080A-I/MS datasheet, 25AA080A-I/MS pinout, 25AA080A-I/MS application, or 25AA080A-I/MS equivalent, key selection criteria include its 1.8 V minimum VCC, 16-byte page size, hardware write protection via WP pin and BP bits, HOLD functionality for SPI bus arbitration, and 1,000,000 erase/write endurance.
Technical Context
The 25AA080A-I/MS implements a standard SPI Mode 0,0/M1,1 interface with separate SI (data in) and SO (data out) lines, CS-controlled selection, and HOLD-driven pause/resume capability. Its internal architecture includes a status register with WIP, WEL, BP0/BP1, and WPEN bits enabling flexible block-level write protection and real-time write-in-progress monitoring.
It uses self-timed internal write cycles (max 5 ms), supports sequential read with automatic address increment, and enforces page-boundary-aware writes-data wraps within the same 16-byte physical page if a write crosses the boundary. Power-on defaults include reset WEL, high-impedance SO, and standby mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 × 8-bit array), sufficient for firmware parameters, calibration data, or device ID storage in space-constrained designs. |
| Supply Voltage Range | 1.8 V to 5.5 V - enables direct interfacing with 1.8 V, 3.3 V, and 5 V microcontrollers without level shifting. |
| Max Clock Frequency | 10 MHz at VCC ≥ 4.5 V - supports high-speed configuration reads during system boot or runtime updates. |
| Page Size | 16 bytes - defines maximum contiguous write length per CS assertion; crossing page boundaries causes wraparound, requiring software management. |
| Write Endurance | 1,000,000 erase/write cycles - ensures long-term reliability in applications with frequent parameter logging or field-updatable settings. |
| Data Retention | Greater than 200 years - guarantees nonvolatile storage integrity over product lifetime without refresh. |
| Operating Temperature | Industrial grade: −40°C to +85°C - validated for use in embedded control, industrial sensors, and automotive body electronics. |
Pinout & Package
8-Lead MSOP (Micro Small Outline Package), 3.0 mm × 4.9 mm body, 0.65 mm pitch, RoHS-compliant Pb-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Chip Select Input | Active-low enable signal; must be held low for entire SPI transaction; rising edge initiates internal write cycle after valid WRITE sequence. |
| SO (Pin 2) | Serial Data Output | Tri-state output delivering memory contents on falling edge of SCK; enters high-impedance when CS is high or HOLD is asserted. |
| WP (Pin 3) | Hardware Write-Protect Input | When WPEN bit = 1 and WP = low, disables writes to Status Register nonvolatile bits; does not affect memory array writes unless BP bits are set. |
| VSS (Pin 4) | Ground Reference | Primary return path for all digital I/O and internal circuitry; requires low-impedance connection to system ground plane. |
| SI (Pin 5) | Serial Data Input | Accepts instruction opcodes, addresses, and write data on rising edge of SCK; latched synchronously to clock. |
| SCK (Pin 6) | Serial Clock Input | Master-generated SPI clock; timing-critical for setup/hold compliance; max 10 MHz at full VCC. |
| HOLD (Pin 7) | Bus Pause Control | Low-active signal that suspends ongoing SPI communication without resetting state; resumes from exact point upon deassertion (SCK must be low). |
| VCC (Pin 8) | Supply Voltage | Power input for core logic and EEPROM array; bypass capacitor (0.1 µF) recommended near pin for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Block Write Protection | Configurable via BP0/BP1 bits to protect none, upper 1/4 (0300h–03FFh), upper 1/2 (0200h–03FFh), or entire array (0000h–03FFh), enabling secure storage of critical firmware flags. |
| Hardware Write Protection | WP pin + WPEN bit combination provides physical lockout of Status Register writes - prevents accidental corruption of protection settings in deployed systems. |
| HOLD Functionality | Enables host MCU to service higher-priority interrupts mid-transaction without losing SPI context; eliminates need for retransmission or state tracking in interrupt-driven firmware. |
| Low-Power Standby | Typical ICCS = 1 µA at 2.5 V - reduces system quiescent current in battery-powered or energy-harvesting applications where EEPROM remains idle most of the time. |
| Robust ESD Rating | 4 kV HBM - meets industrial IEC 61000-4-2 Level 2 requirements, reducing susceptibility to handling damage and board-level ESD events. |
Applications
| Industrial Sensor Calibration Storage | Medical Device Configuration Memory |
|---|---|
|
Use Scenario: Storing factory-calibrated sensor offset/gain coefficients and user-adjusted thresholds in a temperature/humidity sensor node. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding persistent operational parameters accessible via SPI during power-up and runtime. Use Value: Enables plug-and-play deployment without recalibration; 200-year data retention ensures accuracy over equipment lifetime without maintenance. |
Use Scenario: Retaining patient-specific therapy settings, device serial number, and usage counters in portable infusion pumps. IC Role / Device Role / Timing Role: Secure, tamper-resistant storage for regulatory-mandated traceability data and safety-critical configuration values. Use Value: Meets IEC 62304 Class B software requirements via 1M-cycle endurance and hardware write protection preventing unauthorized parameter changes. |
| Automotive Body Control Module Settings | Smart Home Gateway Firmware Parameters |
|
Use Scenario: Saving user preferences (mirror position, seat memory, lighting profiles) in vehicle door modules operating across −40°C to +85°C. IC Role / Device Role / Timing Role: Industrial-grade EEPROM interfacing directly with 3.3 V automotive MCUs via SPI, supporting fast read access during wake-up sequences. Use Value: 1.8 V operation allows compatibility with low-voltage CAN/LIN subsystems; HOLD pin enables seamless SPI bus sharing with other peripherals. |
Use Scenario: Holding Wi-Fi credentials, OTA update metadata, and Zigbee network keys in residential gateways powered by energy-efficient SoCs. IC Role / Device Role / Timing Role: Low-power configuration store accessed infrequently but requiring guaranteed write completion and immunity to brown-out conditions. Use Value: Built-in power-on write protection and self-timed 5 ms writes prevent partial writes during power loss, ensuring configuration consistency after unexpected shutdowns. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPI Serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 25LC080A-I/MS | Requires minimum 2.5 V VCC; identical 16-byte page size and pinout; same MSOP package and temperature range. | Not suitable for 1.8 V systems; otherwise drop-in compatible in 3.3 V/5 V designs where voltage margin permits. | Select when system VCC is stable ≥2.5 V and cost optimization favors Microchip's LC-series pricing tier. |
| AT25080B-MAHL-T | 1.8–5.5 V supply; 32-byte page size; 20 MHz max clock; different pinout (SO/IO shared line); no HOLD pin. | Lacks HOLD functionality and uses SPI Mode 0,0 only; requires firmware adaptation for page-write boundary handling due to larger page size. | Choose when higher throughput (20 MHz) is prioritized over bus arbitration capability and legacy design compatibility. |
Compared with 25AA080A-I/MS, the 25LC080A-I/MS offers identical functionality at higher minimum voltage, while the AT25080B-MAHL-T trades HOLD support and pin compatibility for faster clock speed and larger page writes - necessitating layout and firmware revisions.
Availability
25AA080A-I/MS is available at Aetrix Electronics and suitable for industrial sensor calibration storage, medical device configuration memory, automotive body control module settings, and smart home gateway firmware parameters requiring stable component supply across extended product lifecycles.
Supply support for 25AA080A-I/MS 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 microcontroller, analog, and Flash-IP solutions, specializing in embedded control and connectivity technologies for industrial, automotive, and consumer markets.
The 25AA080A-I/MS belongs to Microchip's 25XX080A/B SPI EEPROM product line, designed specifically for robust, low-voltage, high-reliability nonvolatile data storage in resource-constrained embedded systems.
FAQ
What is the minimum supply voltage required for reliable operation of the 25AA080A-I/MS?
The 25AA080A-I/MS supports operation down to 1.8 V across its full industrial temperature range (−40°C to +85°C). At VCC = 1.8 V, maximum clock frequency is 3 MHz, and DC/AC timing parameters are specified accordingly in Table 1-1 and Table 1-2 of the DS21808D datasheet. Below 1.8 V, functionality is not guaranteed.
Does the 25AA080A-I/MS support page write operations, and what is the maximum page size?
Yes, the 25AA080A-I/MS supports page write operations with a fixed 16-byte page size. Up to 16 bytes can be written in a single WRITE instruction sequence, provided all addresses reside within the same physical page boundary (e.g., 0000h–000Fh, 0010h–001Fh). Crossing a page boundary causes data to wrap to the start of the current page.
How does hardware write protection work on the 25AA080A-I/MS?
Hardware write protection on the 25AA080A-I/MS requires both the WPEN bit (bit 7 of Status Register) to be set to '1' and the WP pin (Pin 3) driven low. When active, this configuration disables writes to the nonvolatile bits of the Status Register only - memory array writes remain enabled unless blocked by BP0/BP1 settings.
Can the 25AA080A-I/MS be used on a shared SPI bus with other devices?
Yes, the 25AA080A-I/MS supports multi-drop SPI bus operation. Its SO pin enters high-impedance state when CS is high, allowing multiple devices to share SI, SCK, and SO lines. The HOLD pin further enables bus arbitration by pausing ongoing transactions without disrupting other peripherals on the same bus.
What is the endurance rating and data retention specification for the 25AA080A-I/MS?
The 25AA080A-I/MS is rated for 1,000,000 erase/write cycles per memory location and guarantees data retention exceeding 200 years at +85°C ambient temperature. These specifications are validated per Microchip's characterization methodology and apply across the full industrial temperature range.
25AA080A-I/MS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- 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:
- 10 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-MSOP
25AA080A-I/MS FAQ
1.How can I place an order for 25AA080A-I/MS through Aetrix?
Please submit a Request for Quotation (RFQ) for 25AA080A-I/MS 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 25AA080A-I/MS reliable?
The price and inventory of 25AA080A-I/MS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 25AA080A-I/MS is usually 5 days.
3.What payment methods are accepted for 25AA080A-I/MS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 25AA080A-I/MS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 25AA080A-I/MS?
25AA080A-I/MS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 25AA080A-I/MS 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 25AA080A-I/MS?
For technical support, including 25AA080A-I/MS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 25AA080A-I/MS requirements.
6.How does Aetrix verify that 25AA080A-I/MS is sourced from the original manufacturer or authorized distributors?
All 25AA080A-I/MS 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 25AA080A-I/MS meets industry standards.
7.What is the process for return or replacement of 25AA080A-I/MS?
All 25AA080A-I/MS units undergo pre-shipment inspection (PSI). If there is an issue with 25AA080A-I/MS, 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 25AA080A-I/MS part is unused and in its original packaging.
Return procedure for 25AA080A-I/MS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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