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Microchip Technology 25AA080BT-I/SN
- Part No.:
- 25AA080BT-I/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
25AA080BT-I/SN.pdf
- Description:
- IC EEPROM 8KBIT SPI 10MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,841
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Product details
Overview
25AA080BT-I/SN from Microchip Technology Inc. is an 8 Kbit SPI Serial EEPROM with 1.8–5.5 V supply range, 16-byte page size, and industrial temperature rating (–40°C to +85°C), housed in an 8-lead SOIC package (SN). It supports up to 10 MHz clock frequency, features hardware write protection via WP pin and status register, and delivers 1,000,000 erase/write cycles for embedded system configuration storage.
For engineers reviewing the 25AA080BT-I/SN datasheet, 25AA080BT-I/SN pinout, 25AA080BT-I/SN application, or 25AA080BT-I/SN equivalent, key selection criteria include voltage compatibility (1.8 V min), page-write boundary handling (16-byte pages), HOLD/CS timing margins at low VCC, and block protection granularity (none/¼/½/all array).
Technical Context
The 25AA080BT-I/SN implements a standard SPI Mode 0,0 interface with separate SI and SO lines, requiring CS assertion, SCK synchronization on rising edge for input, and data output valid after falling edge. Its internal architecture includes a 1024 × 8-bit EEPROM array, page latches, HV generator for programming, and status register with WIP, WEL, BP0/BP1, and WPEN bits.
Write operations require explicit WREN instruction followed by CS high-to-low transition to initiate self-timed internal write cycle (≤5 ms), while read supports sequential addressing with automatic address rollover. HOLD pin suspends ongoing serial transfers without resetting state, enabling interrupt servicing in resource-constrained microcontrollers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 × 8-bit) nonvolatile storage for firmware parameters or calibration data |
| Interface | SPI-compatible serial bus (Mode 0,0) with dedicated SI/SO pins and CS control |
| Page Size | 16 bytes - limits maximum contiguous write per command; crossing page boundary wraps data |
| Max Clock Frequency | 10 MHz at VCC ≥ 4.5 V - enables fast configuration loading in high-speed systems |
| Write Cycle Time | ≤5 ms - defines minimum interval between write commands; blocks further access until complete |
| Endurance | 1,000,000 erase/write cycles - supports frequent field updates in telemetry or logging applications |
| Data Retention | >200 years - ensures long-term reliability in unpowered storage scenarios |
Pinout & Package
25AA080BT-I/SN is packaged in an 8-lead SOIC (SN) with 1.27 mm pitch, 3.90 mm body width, and Pb-free RoHS-compliant construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Chip Select Input | Active-low enable: must be low for all SPI transactions; high places device in standby with SO tri-stated |
| SO (Pin 2) | Serial Data Output | Drives read data after falling edge of SCK; high-impedance when CS high or HOLD active |
| WP (Pin 3) | Write-Protect Pin | Hardware lock: disables Status Register writes when WP low and WPEN bit set in SR |
| VSS (Pin 4) | Ground Reference | Primary return path for VCC current and signal references; requires low-impedance PCB connection |
| SI (Pin 5) | Serial Data Input | Latches instructions, addresses, and write data on rising edge of SCK; sampled first after CS low |
| SCK (Pin 6) | Serial Clock Input | Master-generated clock synchronizing all SPI transfers; rising edge clocks input, falling edge updates output |
| HOLD (Pin 7) | Hold Input | Pauses ongoing SPI sequence when pulled low during SCK low; resumes on next SCK low-to-high if HOLD released |
| VCC (Pin 8) | Supply Voltage | 1.8–5.5 V operating range - supports direct interfacing with 1.8 V, 3.3 V, and 5 V microcontrollers |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation | 1.8 V minimum VCC enables integration into battery-powered or ultra-low-power systems without level-shifting |
| Block write protection | Configurable via BP0/BP1 bits to protect none, upper 1/4 (0300h–03FFh), upper 1/2 (0200h–03FFh), or entire array |
| Power-on data protection | Write enable latch resets at power-up, preventing accidental writes during brown-out or reset conditions |
| HOLD function | Enables host MCU to service higher-priority interrupts mid-transaction without losing SPI state or reinitializing |
| ESD robustness | >4000 V HBM rating ensures reliability in manufacturing, handling, and end-equipment environments |
Applications
| Industrial Sensor Node | Medical Device Calibration |
|---|---|
Use Scenario: Storing sensor offset/gain coefficients and runtime logs in a wireless temperature/humidity node operating on coin-cell battery. IC Role / Device Role / Timing Role: Nonvolatile configuration store accessed via SPI during boot and periodic calibration updates. Use Value: 1.8 V operation extends battery life; 16-byte page writes minimize energy per update; >200-year retention ensures field-deployed units retain calibration across product lifetime. | Use Scenario: Holding patient-specific calibration tables and usage history in portable ECG monitors with strict regulatory traceability requirements. IC Role / Device Role / Timing Role: Secure parameter archive with hardware write-protection enabled during normal operation to prevent corruption. Use Value: WP pin + WPEN bit combination prevents unauthorized or accidental writes to critical calibration data; 1M-cycle endurance supports repeated recalibration during service intervals. |
| Automotive Body Control Module | Smart Home Gateway |
Use Scenario: Saving seat/mirror position presets and lighting profiles in a BCM where EEPROM must survive automotive temperature cycling and EMI. IC Role / Device Role / Timing Role: Industrial-grade SPI EEPROM interfaced to 3.3 V MCU, leveraging HOLD to pause writes during CAN interrupt servicing. Use Value: –40°C to +85°C rating meets AEC-Q100 Grade 3 requirements; HOLD functionality maintains transaction integrity under real-time interrupt load. | Use Scenario: Storing Wi-Fi credentials, OTA update metadata, and user preferences in a voice-controlled home hub with frequent firmware updates. IC Role / Device Role / Timing Role: Configuration memory accessed during boot and OTA post-installation; write-protected except during secure update windows. Use Value: Block protection allows full-array lock during normal operation, unlocking only specific 1/4 segments for credential updates-reducing attack surface vs. full-array unprotected writes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 25LC080BT-I/SN | Requires 2.5–5.5 V VCC; same 8 Kbit size, 16-byte page, and SOIC-8 package | Not suitable for 1.8 V systems; otherwise identical functional behavior and pinout | Select when system rail is ≥2.5 V and cost-sensitive sourcing favors LC-series stock |
| AT25080B-MAHL-T | 1.8–5.5 V compatible; 8 Kbit, 16-byte page; SOIC-8; supports SPI Mode 0,0 but lacks HOLD pin | No HOLD functionality limits use in interrupt-heavy MCUs; different status register bit layout affects software porting | Choose when HOLD is unused and Atmel/Dialog legacy design reuse is prioritized over feature parity |
Compared with 25AA080BT-I/SN, the 25LC080BT-I/SN drops 1.8 V support but maintains identical timing and protection features, while the AT25080B-MAHL-T omits HOLD and requires status register adaptation-making 25AA080BT-I/SN optimal for low-voltage, interrupt-aware designs needing full Microchip feature alignment.
Availability
25AA080BT-I/SN is available at Aetrix Electronics and suitable for industrial sensor nodes, medical device calibration storage, automotive body control modules, and smart home gateways requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 25AA080BT-I/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 microcontroller, analog, and Flash-IP solutions, specializing in embedded control and connectivity technologies for industrial, automotive, and consumer markets.
The 25AA080BT-I/SN belongs to Microchip's 25XX080A/B family of SPI Serial EEPROMs, designed specifically for reliable, low-voltage nonvolatile data storage in space-constrained and power-sensitive embedded systems.
FAQ
What is the minimum supply voltage required for reliable operation of the 25AA080BT-I/SN?
The 25AA080BT-I/SN operates reliably down to 1.8 V, enabling direct interface with 1.8 V logic families and extending battery life in portable devices. Below this threshold, read/write functions are not guaranteed per datasheet specifications, and the write enable latch may fail to set correctly during WREN sequences.
How does the page size of the 25AA080BT-I/SN affect write efficiency in firmware update routines?
The 25AA080BT-I/SN has a fixed 16-byte page size, meaning up to 16 contiguous bytes can be written in a single Page Write command. Crossing a 16-byte boundary causes wraparound within the same page, so firmware routines must align writes to page boundaries or split multi-page updates-adding software overhead but ensuring predictable timing and avoiding data corruption.
Can the 25AA080BT-I/SN be used in systems requiring AEC-Q100 qualification?
The 25AA080BT-I/SN is rated for industrial temperature range (–40°C to +85°C) and is not AEC-Q100 qualified. For automotive applications, Microchip offers the 25LC080B variant with E-temp grade (–40°C to +125°C), but 25AA080BT-I/SN itself lacks automotive qualification testing and documentation required for AEC-Q100 compliance.
What happens to the SO pin during HOLD activation on the 25AA080BT-I/SN?
When HOLD is asserted low on the 25AA080BT-I/SN, the SO pin immediately transitions to high-impedance state regardless of ongoing read activity. This isolates the SPI bus, allowing other peripherals to share the same SO line without contention, and resumes normal output only after HOLD is deasserted and the next SCK edge occurs.
Is the 25AA080BT-I/SN pin-compatible with the 25AA080AT-I/SN?
Yes, the 25AA080BT-I/SN and 25AA080AT-I/SN share identical SOIC-8 (SN) packaging, pinout, and electrical interface. The only difference is page size: 'T' suffix denotes 16-byte pages ('A' version), while 'B' versions have 32-byte pages-but the 25AA080BT-I/SN is explicitly the 'A'-version part with 16-byte pages, matching 25AA080AT-I/SN functionality and footprint.
25AA080BT-I/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:
- Not 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-SOIC
25AA080BT-I/SN FAQ
1.How can I place an order for 25AA080BT-I/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 25AA080BT-I/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 25AA080BT-I/SN reliable?
The price and inventory of 25AA080BT-I/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 25AA080BT-I/SN is usually 5 days.
3.What payment methods are accepted for 25AA080BT-I/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 25AA080BT-I/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 25AA080BT-I/SN?
25AA080BT-I/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 25AA080BT-I/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 25AA080BT-I/SN?
For technical support, including 25AA080BT-I/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 25AA080BT-I/SN requirements.
6.How does Aetrix verify that 25AA080BT-I/SN is sourced from the original manufacturer or authorized distributors?
All 25AA080BT-I/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 25AA080BT-I/SN meets industry standards.
7.What is the process for return or replacement of 25AA080BT-I/SN?
All 25AA080BT-I/SN units undergo pre-shipment inspection (PSI). If there is an issue with 25AA080BT-I/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 25AA080BT-I/SN part is unused and in its original packaging.
Return procedure for 25AA080BT-I/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
25AA080BT-I/SN Tags
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AT24C02C-XHM-T
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