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Microchip Technology AT25080A-10PI-1.8
- Part No.:
- AT25080A-10PI-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT25080A-10PI-1.8.pdf
- Description:
- IC EEPROM 8KBIT SPI 20MHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,817
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Product details
Overview
AT25080A-10PI-1.8 from Microchip Technology (formerly Atmel) is a serial SPI EEPROM providing 8 Kbit (1024 × 8) nonvolatile memory with 1.8 V to 5.5 V single-supply operation, 20 MHz max clock rate at 5 V, 32-byte page write capability, and hardware/software write protection via WP pin and status register. It serves as system configuration storage in industrial controllers requiring low-voltage reliability.
For engineers reviewing the AT25080A-10PI-1.8 datasheet, AT25080A-10PI-1.8 pinout, AT25080A-10PI-1.8 application, or AT25080A-10PI-1.8 equivalent, key selection criteria include 1.8 V minimum supply compatibility, -40°C to +85°C industrial temperature range, PDIP-8 packaging, SPI Mode 0/3 support, and block-level write protection granularity.
Technical Context
The AT25080A-10PI-1.8 operates as an SPI slave device with dedicated SI/SO lines, CS-controlled selection, and HOLD pin for serial communication suspension without reset. Its instruction set includes WREN/WRDI for write enable/disable, RDSR/WRSR for status register access, and READ/WRITE for memory access - all MSB-first with op-code–driven protocol.
It implements nonvolatile status register bits (BP0/BP1/WPEN) enabling 1/4, 1/2, or full array write protection. Internal self-timed write cycles complete in ≤5 ms, require no pre-erase, and retain data for 100 years with 1 million endurance cycles - validated across 1.8 V to 5.5 V supply and -40°C to +85°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 words × 8 bits), organized for byte-addressable SPI access |
| Supply Voltage Range | 1.8 V to 5.5 V - enables direct interface with 1.8 V logic and mixed-voltage systems |
| Max Clock Frequency | 20 MHz at VCC = 5.0 V - supports high-throughput configuration reads in real-time systems |
| Write Cycle Time | ≤5 ms - deterministic programming latency for time-critical firmware updates |
| Endurance & Retention | 1 million write cycles / 100 years data retention - suitable for field-upgradable industrial firmware storage |
| Operating Temperature | -40°C to +85°C - qualified for industrial control cabinet environments |
| Package | 8-lead PDIP (8P3), 0.300" wide - through-hole mounting compatible with legacy PCB assembly |
Pinout & Package
AT25080A-10PI-1.8 uses an 8-lead Plastic Dual Inline Package (PDIP) with 0.300" body width per JEDEC MS-001 BA. Pin 1 is marked by notch or dot; leads are gull-wing shaped for through-hole insertion.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable: initiates SPI command sequence only when low; high-Z SO during CS high |
| SCK | Serial Clock | Master-generated clock input; defines timing for SI sampling and SO output (SPI Modes 0/3) |
| SI | Serial Data Input | Receives op-codes, addresses, and write data; ignored unless CS is low and device is write-enabled |
| SO | Serial Data Output | Drives read data or status bits; tri-states when CS high or HOLD active |
| GND | Ground Reference | Return path for VCC and all I/O; must be low-impedance to minimize noise on SPI lines |
| VCC | Power Supply | Single 1.8–5.5 V supply powering core logic and I/O buffers; decoupling capacitor required |
| WP | Write Protect | Hardware lock: disables status register writes when low and WPEN=1 - prevents accidental config corruption |
| HOLD | Communication Suspend | Pauses ongoing SPI transfer (e.g., during interrupt servicing) without resetting address counter |
Key Features
| Feature | Design Value |
|---|---|
| SPI Mode 0 & 3 Support | Compatible with 68HC11, PIC, ARM Cortex-M, and other common microcontroller SPI peripherals without mode translation |
| 32-byte Page Write | Reduces write overhead vs. byte-wise programming - cuts 1024-byte update time from ~5.1 s to ~160 ms (5 ms × 32 pages) |
| Four-Level Block Protection | Enables selective locking of top quarter/half/all memory - secures bootloader while allowing runtime parameter updates |
| 1.8 V Operation | Eliminates level-shifting for ultra-low-power MCUs (e.g., MSP430, EFM32) and battery-backed systems |
| Industrial Temp Grade | Validated performance across -40°C to +85°C - ensures reliable boot configuration in uncontrolled enclosures |
Applications
| Industrial PLC Configuration Storage | Medical Device Calibration Data |
|---|---|
Use Scenario: Storing I/O mapping tables, PID tuning parameters, and alarm thresholds in programmable logic controllers deployed in factory automation cabinets. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed at power-up and during runtime reconfiguration via SPI from ARM-based controller. Use Value: 1.8 V operation allows direct connection to 1.8 V FPGA configuration I/O banks; 100-year retention eliminates recalibration after 10+ year deployments. |
Use Scenario: Holding sensor offset/gain coefficients and regulatory compliance logs in portable ultrasound and infusion pumps. IC Role / Device Role / Timing Role: Secure calibration vault accessed only during service mode; WP pin hardwired to prevent field tampering. Use Value: Block protection isolates calibration sector (0x300–0x3FF) from user settings - ensures FDA 21 CFR Part 11 audit trail integrity. |
| Automotive Body Control Module | Smart Energy Meter Firmware Patch Storage |
Use Scenario: Storing seat position presets, mirror angles, and lighting profiles in 12 V automotive BCMs with local 3.3 V LDO regulation. IC Role / Device Role / Timing Role: SPI slave holding user preferences; HOLD pin used to pause writes during CAN bus interrupt handling. Use Value: -40°C to +85°C rating matches AEC-Q100 Grade 3 requirements; 20 MHz clock enables fast profile recall during ignition cycle. |
Use Scenario: Storing encrypted firmware delta patches downloaded over NB-IoT for remote meter upgrades in utility grid infrastructure. IC Role / Device Role / Timing Role: Secure patch staging area - WRSR-configured BP1/BP0 protect boot sector while allowing patch writes to upper memory. Use Value: 5 ms write cycle enables sub-100 ms patch commit; 1M endurance supports >27 years of daily updates (1 patch/day). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95080-DRMN6TP/K | STMicroelectronics 8 Kbit SPI EEPROM; identical 1.8–5.5 V range and PDIP-8 package but rated -40°C to +105°C; 10 MHz max clock at 1.8 V | Higher temp grade suits under-hood automotive use; lower speed at 1.8 V limits high-throughput logging | Select for extended temperature margin where 10 MHz suffices; verify HOLD/WP timing alignment with host MCU |
| BR24G08FJ-WE2 | Rohm 8 Kbit SPI EEPROM; 1.7–5.5 V range, TSSOP-8 only, 10 MHz max at 1.8 V, built-in write-cycle suspend | No PDIP option; smaller footprint saves board space but requires rework for through-hole designs | Choose for space-constrained consumer electronics; confirm TSSOP-8 thermal relief compatibility with existing reflow profile |
Compared with M95080-DRMN6TP/K and BR24G08FJ-WE2, AT25080A-10PI-1.8 uniquely combines PDIP-8 mechanical compatibility, 20 MHz speed at 5 V, and proven industrial temperature validation - making it optimal for legacy industrial control upgrades where package and timing continuity are critical.
Availability
AT25080A-10PI-1.8 is available at Aetrix Electronics and suitable for industrial PLCs, medical calibration systems, and automotive body control modules requiring stable component supply, long-term lifecycle assurance, and through-hole assembly compatibility.
Supply support for AT25080A-10PI-1.8 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 acquired Atmel in 2016 and maintains its legacy memory portfolio with full datasheet, tooling, and quality support.
The AT25080A-10PI-1.8 belongs to Microchip's serial SPI EEPROM product line, designed for robust nonvolatile data storage in resource-constrained embedded systems where low-voltage operation, industrial temperature resilience, and hardware write protection are mandatory.
FAQ
What is the minimum operating voltage for AT25080A-10PI-1.8?
The AT25080A-10PI-1.8 supports true 1.8 V minimum operation across its full industrial temperature range (-40°C to +85°C). This is confirmed in the DC Characteristics table (VCC1 = 1.8 V min) and distinguishes it from 2.7 V-only variants like AT25080A-10PI-2.7. The device maintains full SPI functionality, including 32-byte page writes and status register access, at 1.8 V.
Does AT25080A-10PI-1.8 support SPI Mode 0 and Mode 3 only?
Yes, AT25080A-10PI-1.8 explicitly supports SPI Modes 0 (CPOL = 0, CPHA = 0) and 3 (CPOL = 1, CPHA = 1) as stated in the Features section. It does not support Mode 1 or Mode 2. Host microcontrollers must configure their SPI peripheral accordingly - for example, using rising-edge sampling with idle-low clock for Mode 0, or falling-edge sampling with idle-high clock for Mode 3.
How is write protection implemented on AT25080A-10PI-1.8?
AT25080A-10PI-1.8 implements dual-layer write protection: hardware via the WP pin (active-low, enabled when WPEN bit = 1), and software via BP0/BP1 bits in the status register. These bits define four protection levels - none, top 1/4 (0x300–0x3FF), top 1/2 (0x200–0x3FF), or full array (0x000–0x3FF) - allowing selective locking of configuration sectors while permitting runtime updates to unprotected regions.
What is the maximum clock frequency for AT25080A-10PI-1.8 at 1.8 V?
While the AT25080A-10PI-1.8 achieves 20 MHz maximum clock frequency at 5.0 V, its AC Characteristics table specifies a reduced 5 MHz maximum SCK frequency for the 1.8–3.6 V supply range. This is due to internal timing constraints at lower voltages; exceeding 5 MHz at 1.8 V may cause setup/hold violations and data corruption during read/write operations.
Is AT25080A-10PI-1.8 pin-compatible with other AT25xxx family members?
Yes, AT25080A-10PI-1.8 shares identical 8-pin PDIP pinout and SPI interface definition with AT25160A-10PI-1.8, AT25320A-10PI-1.8, and AT25640A-10PI-1.8. All use CS/SCK/SI/SO/GND/VCC/WP/HOLD in the same physical arrangement. However, memory size and address depth differ - AT25080A-10PI-1.8 uses 10-bit addressing (A9–A0), while larger variants require more address bits and may need host firmware adaptation.
AT25080A-10PI-1.8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT25080A-10PI-1.8 FAQ
1.How can I place an order for AT25080A-10PI-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25080A-10PI-1.8 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 AT25080A-10PI-1.8 reliable?
The price and inventory of AT25080A-10PI-1.8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25080A-10PI-1.8 is usually 5 days.
3.What payment methods are accepted for AT25080A-10PI-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25080A-10PI-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25080A-10PI-1.8?
AT25080A-10PI-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25080A-10PI-1.8 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 AT25080A-10PI-1.8?
For technical support, including AT25080A-10PI-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25080A-10PI-1.8 requirements.
6.How does Aetrix verify that AT25080A-10PI-1.8 is sourced from the original manufacturer or authorized distributors?
All AT25080A-10PI-1.8 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 AT25080A-10PI-1.8 meets industry standards.
7.What is the process for return or replacement of AT25080A-10PI-1.8?
All AT25080A-10PI-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT25080A-10PI-1.8, 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 AT25080A-10PI-1.8 part is unused and in its original packaging.
Return procedure for AT25080A-10PI-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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