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Microchip Technology AT25080AN-10SI-2.7
- Part No.:
- AT25080AN-10SI-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT25080AN-10SI-2.7.pdf
- Description:
- IC EEPROM 8KBIT SPI 20MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,094
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Product details
Overview
AT25080AN-10SI-2.7 from Microchip Technology (formerly Atmel) is a 8-Kbit SPI serial EEPROM organized as 1024 × 8-bit memory, operating from 2.7V to 5.5V, supporting 20 MHz clock rate at 5V, with 32-byte page write and hardware/software write protection via WP pin and status register. It serves as nonvolatile configuration storage in industrial microcontroller systems requiring reliable data retention.
For engineers reviewing the AT25080AN-10SI-2.7 datasheet, AT25080AN-10SI-2.7 pinout, AT25080AN-10SI-2.7 application, or AT25080AN-10SI-2.7 equivalent, key selection considerations include its 8-lead JEDEC SOIC package, −40°C to +85°C industrial temperature range, 1 million write cycles endurance, 100-year data retention, and support for SPI Modes 0 and 3.
Technical Context
The AT25080AN-10SI-2.7 implements a synchronous serial peripheral interface (SPI) slave architecture with separate SI/SO lines, MSB-first data transfer, and op-code–driven command execution. It requires WREN before WRITE and supports HOLD pin suspension without sequence reset.
Its internal status register (8-bit) controls block write protection (BP0/BP1), write enable latch (WEN), ready/busy flag (RDY), and write protect enable (WPEN). Block protection covers 0%, 25%, 50%, or 100% of the 1024-word array based on BP1/BP0 settings per Table 4.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 × 8-bit words) - fixed address space requiring A9–A0 addressing; no external address pins needed. |
| Supply Voltage | 2.7 V to 5.5 V - enables direct interfacing with 3.3 V and 5 V microcontrollers without level shifting. |
| Max Clock Rate | 20 MHz at VCC = 5.0 V - supports high-speed configuration reads in time-critical boot sequences. |
| Write Cycle Time | 5 ms max - deterministic self-timed programming eliminates need for external timing control or polling overhead beyond RDSR. |
| Endurance | 1,000,000 write cycles - suitable for firmware parameter logging or calibration data updates in field-deployed equipment. |
| Data Retention | 100 years at 25°C - ensures long-term validity of stored device identifiers, calibration coefficients, or security keys. |
| Operating Temp | −40°C to +85°C - qualified for industrial ambient environments including factory automation and outdoor metering. |
Pinout & Package
AT25080AN-10SI-2.7 is housed in an 8-lead JEDEC SOIC (8S1) package: 0.150" wide, gull-wing leads, 1.27 mm pitch, body dimensions 4.90 mm × 3.99 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; must be low for serial communication; high impedance on SO when CS high. |
| SCK | Serial Clock | Input-only master-generated clock; defines SPI Mode 0 (CPOL=0, CPHA=0) or Mode 3 (CPOL=1, CPHA=1) timing. |
| SI | Serial Data Input | MOSI line for op-codes, addresses, and write data; ignored during HOLD or when CS high. |
| SO | Serial Data Output | MISO line for read data and status register bits; tri-stated when CS high or during HOLD. |
| WP | Write Protect | Hardware lock for status register writes when WPEN=1; no effect if WPEN=0 or WP high. |
| HOLD | Communication Suspend | Pauses ongoing SPI transfer (e.g., mid-read) without resetting address counter; requires SCK low to assert. |
| VCC | Power Supply | Single supply input; supports 2.7–5.5 V operation with ISB2 standby current ≤2.0 µA at 2.7 V. |
| GND | Ground Reference | Return path for all I/O and power; decoupling capacitor required within 10 mm of VCC/GND pins. |
Key Features
| Feature | Design Value |
|---|---|
| 32-byte Page Write | Enables burst programming of up to 32 contiguous bytes per CS high transition, reducing total write time vs. byte-by-byte writes. |
| Block Write Protection | Configurable 0%/25%/50%/100% array protection via nonvolatile BP0/BP1 bits, preventing accidental overwrite of critical firmware sections. |
| Hardware + Software Protection | WP pin disables status register writes when WPEN=1; WRDI instruction independently clears WEN latch regardless of WP state. |
| Extended Temperature Grade | Qualified from −40°C to +85°C per ordering code suffix "-2.7", ensuring stable timing and reliability across industrial thermal cycles. |
| Low-Power Standby | Standby current ≤2.0 µA at 2.7 V (ISB2), enabling battery-backed operation in energy-constrained edge nodes. |
Applications
| Industrial PLC Configuration Storage | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Storing calibrated sensor offsets, I/O mapping tables, and user-defined logic parameters in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration EEPROM interfaced to ARM Cortex-M3/M4 MCU via SPI bus; accessed during boot and runtime reconfiguration. Use Value: Enables field-upgradable logic without firmware reflashing; 1M endurance supports >10 years of daily parameter adjustments at 300 cycles/year. | Use Scenario: Retaining door lock states, mirror position memories, and lighting profiles in automotive BCMs across ignition cycles. IC Role / Device Role / Timing Role: SPI EEPROM providing persistent storage for user preferences; accessed via CAN-to-SPI gateway MCU during vehicle power-up. Use Value: Meets AEC-Q100 stress requirements for automotive grade parts; 100-year retention guarantees memory integrity over full vehicle lifetime. |
| Medical Infusion Pump Calibration | Smart Energy Meter Firmware Parameters |
Use Scenario: Holding flow-rate calibration coefficients, alarm thresholds, and maintenance logs in Class II medical infusion pumps. IC Role / Device Role / Timing Role: Safety-critical nonvolatile memory storing FDA-required calibration data; accessed by safety MCU during pre-infusion self-test. Use Value: 100-year data retention satisfies regulatory archival requirements; hardware WP prevents tampering with calibration values during service. | Use Scenario: Storing tariff schedules, demand-response settings, and cryptographic keys in ANSI C12.22-compliant smart meters. IC Role / Device Role / Timing Role: Secure configuration storage interfaced to metrology SoC; write-protected sections prevent unauthorized tariff changes. Use Value: Block protection isolates key storage (BP1/BP0=11) from firmware update regions; 2.7–5.5 V operation matches meter's 3.3 V rail. |
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 8-lead SOIC package, 2.5–5.5 V supply, 20 MHz max clock, but uses different status register bit layout and lacks HOLD pin. | No HOLD functionality limits use in multi-master or interrupt-driven SPI systems requiring pause/resume capability. | Select when HOLD is unused and ST's qualification ecosystem (e.g., automotive AEC-Q100 Grade 1) is preferred. |
| BR24G08NUX-10 | Rohm 8-Kbit SPI EEPROM; same 8-lead SOIC, 1.7–5.5 V supply, 10 MHz max clock (vs. 20 MHz), and includes built-in error correction (ECC) for enhanced data integrity. | Lower clock rate increases configuration read time; ECC adds robustness in high-noise industrial EMI environments. | Select when system-level error resilience outweighs speed requirement, especially in noisy factory floor deployments. |
Compared with M95080-DRMN3TP/K and BR24G08NUX-10, AT25080AN-10SI-2.7 offers superior SPI timing headroom (20 MHz), integrated HOLD functionality for deterministic bus arbitration, and proven field reliability in industrial temperature cycling - making it optimal for real-time embedded systems demanding both speed and robustness.
Availability
AT25080AN-10SI-2.7 is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, medical device calibration, and smart metering applications requiring stable component supply, extended temperature operation, and long-term data integrity.
Supply support for AT25080AN-10SI-2.7 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 semiconductor company specializing in microcontrollers, analog devices, and memory solutions, with a focus on embedded control and connectivity.
The AT25080AN-10SI-2.7 belongs to Microchip's legacy Atmel SPI EEPROM product line, designed specifically for industrial and automotive systems needing low-voltage, high-reliability nonvolatile storage with flexible hardware/software write protection.
FAQ
What is the maximum clock frequency supported by AT25080AN-10SI-2.7?
The AT25080AN-10SI-2.7 supports a maximum SCK clock frequency of 20 MHz when operated at VCC = 5.0 V. At lower supply voltages (e.g., 2.7 V), the maximum rated frequency drops to 10 MHz per AC Characteristics tables. This ensures timing compliance across its full 2.7–5.5 V operating range while maintaining signal integrity in noise-sensitive environments.
Does AT25080AN-10SI-2.7 support SPI Mode 1 or Mode 2?
No, AT25080AN-10SI-2.7 only supports SPI Modes 0 (CPOL = 0, CPHA = 0) and 3 (CPOL = 1, CPHA = 1) as explicitly stated in its Features section. It does not support Mode 1 or Mode 2 due to fixed sampling/setting timing relative to SCK edges. Attempting Mode 1 or 2 will result in corrupted data transfers or failed commands.
How does the HOLD pin function during an active READ sequence?
During an active READ sequence, asserting HOLD low (while SCK is low) suspends data output on SO and freezes the internal address counter. The master can pause transmission indefinitely; resuming requires bringing HOLD high while SCK remains low. No data is lost, and the next SCK edge continues from the suspended byte - enabling deterministic interruption in multi-tasking MCU environments.
What happens if the WP pin is held low while WPEN = 0 in AT25080AN-10SI-2.7?
When WPEN = 0, the WP pin is disabled regardless of its logic level; writes to the status register (including BP0/BP1 and WPEN bits) and unprotected memory remain fully functional. This allows safe installation in systems where WP is tied to ground, while retaining full configurability - a key design flexibility confirmed in Table 5 of the datasheet.
Is AT25080AN-10SI-2.7 pin-compatible with AT25080A-10PI-2.7?
Yes, AT25080AN-10SI-2.7 and AT25080A-10PI-2.7 share identical pin functions (CS, SCK, SI, SO, WP, HOLD, VCC, GND) and electrical specifications, but differ in package: 8S1 (SOIC) vs. 8P3 (PDIP). PCB layout requires footprint change, yet schematic connectivity and firmware drivers remain fully interchangeable across both variants.
AT25080AN-10SI-2.7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT25080AN-10SI-2.7 FAQ
1.How can I place an order for AT25080AN-10SI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25080AN-10SI-2.7 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 AT25080AN-10SI-2.7 reliable?
The price and inventory of AT25080AN-10SI-2.7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25080AN-10SI-2.7 is usually 5 days.
3.What payment methods are accepted for AT25080AN-10SI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25080AN-10SI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25080AN-10SI-2.7?
AT25080AN-10SI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25080AN-10SI-2.7 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 AT25080AN-10SI-2.7?
For technical support, including AT25080AN-10SI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25080AN-10SI-2.7 requirements.
6.How does Aetrix verify that AT25080AN-10SI-2.7 is sourced from the original manufacturer or authorized distributors?
All AT25080AN-10SI-2.7 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 AT25080AN-10SI-2.7 meets industry standards.
7.What is the process for return or replacement of AT25080AN-10SI-2.7?
All AT25080AN-10SI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT25080AN-10SI-2.7, 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 AT25080AN-10SI-2.7 part is unused and in its original packaging.
Return procedure for AT25080AN-10SI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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