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Microchip Technology 25AA080DT-I/SN
- Part No.:
- 25AA080DT-I/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
25AA080DT-I/SN.pdf
- Description:
- IC EEPROM 8KBIT SPI 10MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,555
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Product details
Overview
25AA080DT-I/SN from Microchip Technology is an 8 Kbit SPI Serial EEPROM with 1.8–5.5 V supply range, 32-byte page size, and industrial temperature rating (–40°C to +85°C). It features 10 MHz max clock speed, self-timed 5 ms write cycle, hardware write protection via WP pin, and supports sequential read for firmware storage in microcontroller-based systems.
For engineers reviewing the 25AA080DT-I/SN datasheet, 25AA080DT-I/SN pinout, 25AA080DT-I/SN application, or 25AA080DT-I/SN equivalent, key selection criteria include voltage compatibility (1.8 V min), page-write boundary handling, HOLD functionality for interrupt-safe SPI bus sharing, and block protection granularity (none/1/4/1/2/all array).
Technical Context
The 25AA080DT-I/SN implements a standard SPI Mode 0,0 interface with separate SI and SO lines, requiring CS low, SCK edge-triggered sampling (data latched on rising SCK, SO updated after falling SCK), and HOLD support for pausing ongoing transfers. Its internal architecture includes a 1024 × 8-bit EEPROM array, page latches, HV generator for write/erase, and status register with WIP, WEL, BP0/BP1, and WPEN bits.
Write operations require explicit WREN instruction followed by WRITE command and address; page writes are limited to 32 bytes within a single physical page (000h–01Fh, 020h–03Fh, etc.), and crossing boundaries causes wraparound. Hardware write protection engages only when WP = low AND WPEN = 1, leaving memory reads and status register reads unaffected.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 × 8-bit organization) - fixed address space up to 03FFh, enabling compact firmware parameter or calibration data storage. |
| Interface | SPI-compatible serial bus (Mode 0,0) - requires only CS, SCK, SI, SO, WP, HOLD, VCC, VSS - minimal GPIO usage on host MCU. |
| Page Size | 32 bytes - maximum contiguous write per command; software must enforce alignment to avoid unintended data wraparound. |
| Max Clock Frequency | 10 MHz at VCC ≥ 4.5 V - supports high-speed configuration loading without MCU clock domain bottlenecks. |
| Write Cycle Time | 5 ms max (self-timed) - deterministic erase/write latency enables predictable timeout handling in real-time firmware. |
| Supply Voltage Range | 1.8 V to 5.5 V - interoperable with 1.8 V logic-level MCUs and legacy 5 V systems without level-shifting. |
| Endurance & Retention | >1 million erase/write cycles; >200 years data retention - suitable for field-updatable calibration tables and infrequently modified system parameters. |
Pinout & Package
25AA080DT-I/SN is housed in an 8-lead SOIC package (SN suffix), 3.9 mm × 4.9 mm body, 1.27 mm pitch, RoHS-compliant matte tin finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Chip Select Input | Active-low enable; deselecting places SO in high-impedance state, allowing multi-device SPI bus sharing. |
| SO (Pin 2) | Serial Data Output | Tri-state output; data valid after falling SCK edge; high-Z when CS high or HOLD low. |
| WP (Pin 3) | Hardware Write-Protect Control | Enables nonvolatile block protection only when WPEN bit = 1; no effect if WPEN = 0, enabling safe board-level grounding. |
| VSS (Pin 4) | Ground Reference | Primary return path for all I/O and core circuitry; must be low-impedance connection to system GND plane. |
| SI (Pin 5) | Serial Data Input | Latches instruction, address, and data on rising SCK edge; accepts MSB-first SPI framing. |
| SCK (Pin 6) | Serial Clock Input | Synchronizes all data transfers; timing constraints scale with VCC (e.g., 10 MHz max at ≥4.5 V). |
| HOLD (Pin 7) | Bus Pause Control | Halts ongoing SPI transfer when pulled low during active CS; resumes on rising edge while SCK is low - critical for servicing MCU interrupts. |
| VCC (Pin 8) | Power Supply | 1.8–5.5 V operation; internal regulation ensures stable core voltage across full range; decoupling capacitor required near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Block Write Protection | Selectable protection of none / 1/4 / 1/2 / all memory array via BP0/BP1 bits - prevents accidental overwrite of boot code or security keys. |
| Power-On Write Disable | Write enable latch resets at power-up - eliminates risk of spurious writes during brown-out or reset sequencing. |
| HOLD Functionality | Pauses active SPI transaction without losing state - enables deterministic interrupt response in time-critical embedded applications. |
| Low Standby Current | 1 µA at +85°C (VCC = 5.5 V) - extends battery life in always-on sensor nodes or portable instrumentation. |
| ESD Robustness | >4 kV HBM - withstands handling and board-level ESD events without latch-up or parametric shift. |
Applications
| Industrial PLC Configuration Storage | Medical Device Calibration Data |
|---|---|
Use Scenario: Storing I/O mapping, scaling factors, and alarm thresholds in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed via SPI during boot and runtime reconfiguration; HOLD used to pause reads during motion-control interrupt servicing. Use Value: Ensures deterministic startup behavior and field-upgradable settings without requiring external FRAM or battery-backed SRAM. | Use Scenario: Retaining sensor offset/gain coefficients and patient-specific therapy parameters in portable infusion pumps and diagnostic monitors. IC Role / Device Role / Timing Role: Secure, long-life data vault interfaced to ARM Cortex-M host; WP pin hardwired low with WPEN set to protect calibration blocks from firmware bugs. Use Value: Meets >200-year data retention and >1M endurance requirements for Class II medical devices under IEC 62304. |
| Automotive Body Control Module | Smart Energy Meter Firmware Patch Storage |
Use Scenario: Holding seat/mirror position presets, lighting profiles, and door lock logic in 12 V automotive BCMs operating across –40°C to +85°C. IC Role / Device Role / Timing Role: SPI slave storing user preferences; operates at 3.3 V from LDO; uses sequential read for fast profile recall during ignition-on. Use Value: 1.8 V min supply enables direct connection to 3.3 V rail; industrial temp grade satisfies AEC-Q100 stress test requirements. | Use Scenario: Storing signed firmware delta patches and cryptographic keys in utility-grade electricity meters with 15+ year field life. IC Role / Device Role / Timing Role: Tamper-resistant update repository; STATUS register monitored for WIP flag during over-the-air patch apply; BP1/BP0 lock root key sector. Use Value: Block protection prevents unauthorized modification of secure boot assets; >200-year retention eliminates field replacement due to data decay. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPI EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 25LC080DT-I/SN | Requires minimum 2.5 V VCC; same 32-byte page, 8 Kbit, SOIC-8 package. | Not suitable for 1.8 V or 2.0 V systems; otherwise identical functional and timing behavior. | Select 25LC080DT-I/SN only when system VCC is guaranteed ≥2.5 V and cost sensitivity favors Microchip's LC series. |
| AT25080B-SSHL-T | Same 8 Kbit, 32-byte page, SOIC-8; supports 2.5–5.5 V; 20 MHz max clock; built-in write inhibit during power ramp. | Higher clock rate enables faster bulk writes; lacks HOLD pin - requires software-managed bus arbitration. | Choose AT25080B-SSHL-T when higher throughput is needed and HOLD functionality is not required in the host design. |
Compared with 25LC080DT-I/SN, the 25AA080DT-I/SN enables 1.8 V operation for ultra-low-power systems, while the AT25080B-SSHL-T offers faster 20 MHz SPI but omits HOLD - making 25AA080DT-I/SN optimal for interrupt-sensitive, wide-voltage embedded control.
Availability
25AA080DT-I/SN is available at Aetrix Electronics and suitable for industrial PLCs, medical calibration storage, automotive body control modules, and smart energy meter designs requiring stable component supply across extended product lifecycles.
Supply support for 25AA080DT-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 microcontrollers, analog, FPGA, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 25AAxx family delivers low-voltage, SPI-compatible EEPROMs optimized for cost-sensitive, space-constrained embedded systems requiring robust nonvolatile storage at 1.8 V operation.
FAQ
What is the minimum supply voltage required for reliable operation of the 25AA080DT-I/SN?
The 25AA080DT-I/SN operates reliably down to 1.8 V across its full industrial temperature range (–40°C to +85°C). Below 1.8 V, read/write functionality is not guaranteed per Microchip's DS22151B specification. This 1.8 V minimum enables direct integration with modern ultra-low-power MCUs and battery-powered sensors without level-shifting circuitry.
Does the 25AA080DT-I/SN support page write operations, and what is the maximum page size?
Yes, the 25AA080DT-I/SN supports page write operations with a maximum page size of 32 bytes. This 'D' version device differs from the 'C' version (16-byte pages). Software must ensure all bytes in a single page write fall within the same 32-byte boundary (e.g., addresses 000h–01Fh); crossing boundaries causes data to wrap to the start of the page.
How does the HOLD pin function during an active SPI transaction on the 25AA080DT-I/SN?
The HOLD pin on the 25AA080DT-I/SN suspends an ongoing SPI transaction when pulled low while CS is active and SCK is low. All I/O pins enter high-impedance state, and the device retains internal state. Resuming requires bringing HOLD high while SCK remains low - enabling the host MCU to service higher-priority interrupts without restarting the entire command sequence.
Can the 25AA080DT-I/SN be used in automotive applications requiring AEC-Q100 qualification?
No, the 25AA080DT-I/SN carries an industrial temperature rating (–40°C to +85°C) and is not AEC-Q100 qualified. For automotive applications, Microchip offers the 25LC080D variant with 'E' grade (–40°C to +125°C) and automotive qualification - e.g., 25LC080DE/SN - which meets AEC-Q100 stress test requirements.
What write protection mechanisms are available on the 25AA080DT-I/SN?
The 25AA080DT-I/SN provides three layered write protection: (1) software-controlled STATUS register bits (BP0/BP1) for nonvolatile block protection (none/1/4/1/2/all), (2) hardware WP pin enabled only when WPEN bit = 1, and (3) power-on reset of the write enable latch. These mechanisms collectively prevent accidental or malicious writes to critical configuration or calibration data.
25AA080DT-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
25AA080DT-I/SN FAQ
1.How can I place an order for 25AA080DT-I/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 25AA080DT-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 25AA080DT-I/SN reliable?
The price and inventory of 25AA080DT-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 25AA080DT-I/SN is usually 5 days.
3.What payment methods are accepted for 25AA080DT-I/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 25AA080DT-I/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 25AA080DT-I/SN?
25AA080DT-I/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 25AA080DT-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 25AA080DT-I/SN?
For technical support, including 25AA080DT-I/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 25AA080DT-I/SN requirements.
6.How does Aetrix verify that 25AA080DT-I/SN is sourced from the original manufacturer or authorized distributors?
All 25AA080DT-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 25AA080DT-I/SN meets industry standards.
7.What is the process for return or replacement of 25AA080DT-I/SN?
All 25AA080DT-I/SN units undergo pre-shipment inspection (PSI). If there is an issue with 25AA080DT-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 25AA080DT-I/SN part is unused and in its original packaging.
Return procedure for 25AA080DT-I/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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