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Microchip Technology 25C080-I/SN
- Part No.:
- 25C080-I/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
25C080-I/SN.pdf
- Description:
- IC EEPROM 8KBIT SPI 3MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:844
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Product details
Overview
25C080-I/SN from Microchip Technology Inc. is an 8 Kbit SPI Serial EEPROM with 1024 × 8-bit organization, 4.5–5.5 V supply range, and industrial temperature rating (−40°C to +85°C). It features 16-byte page write, 5 ms max internal write cycle time, and hardware write protection via WP pin and Status register. It is used in embedded systems for nonvolatile storage of calibration data, configuration settings, and firmware patches.
For engineers reviewing the 25C080-I/SN datasheet, 25C080-I/SN pinout, 25C080-I/SN application, or 25C080-I/SN equivalent, key selection considerations include its 3 MHz max clock frequency at 4.5–5.5 V, block write protection (0%, 25%, 50%, or 100% array), HOLD functionality for interrupt-safe serial pauses, and SOIC-8 (150 mil) package compatibility with space-constrained PCB layouts.
Technical Context
The 25C080-I/SN implements a standard SPI Mode 0,0/Master-Slave interface with separate SI (data in) and SO (data out) lines, CS-controlled device selection, and SCK-synchronized transfers. Its internal architecture includes a status register with WIP, WEL, BP0/BP1, and WPEN bits, enabling programmable block protection and hardware write-disable control.
It supports sequential read across the full 1024-byte address space with automatic address rollover, and page writes limited to 16-byte boundaries. The HOLD pin suspends ongoing communication without resetting the internal state, allowing host microcontrollers to service higher-priority interrupts while preserving SPI transaction integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 8 Kbit (1024 × 8-bit), sufficient for small firmware metadata or device-specific configuration tables |
| Interface | SPI-compatible serial bus (Mode 0,0), requiring only CS, SCK, SI, SO, WP, and HOLD signals |
| Max clock frequency | 3 MHz at VCC = 4.5–5.5 V, enabling ~384 kB/s theoretical read throughput |
| Write cycle time | 5 ms maximum internal self-timed erase/write, eliminating need for external timing control |
| Endurance & retention | 1 million write/erase cycles and >200 years data retention, validated for long-life industrial deployments |
| Supply voltage | 4.5–5.5 V only - not compatible with 3.3 V or 1.8 V systems without level shifting |
| Temperature range | Industrial grade: −40°C to +85°C, qualified for use in factory automation and outdoor instrumentation |
Pinout & Package
25C080-I/SN is housed in an 8-pin Plastic Small Outline (SOIC) package, 150 mil body width (JEDEC MS-012), with gull-wing leads and surface-mount footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Chip Select Input | Active-low enable: pulls device into active mode; high state forces Standby and tri-states SO |
| SO (Pin 2) | Serial Data Output | Tri-state CMOS output; data shifted out on SCK falling edge during read operations |
| WP (Pin 3) | Write-Protect Input | Hardware lock: when WPEN=1 and WP=low, disables Status register writes; otherwise ignored |
| VSS (Pin 4) | Ground Reference | Primary return path for all internal logic and I/O; must be low-impedance connection |
| SI (Pin 5) | Serial Data Input | CMOS input; latches instruction, address, and data bits on SCK rising edge |
| SCK (Pin 6) | Serial Clock Input | Master-generated clock; defines timing for SI sampling and SO updates per SPI protocol |
| HOLD (Pin 7) | Communication Pause Control | Active-low suspend: halts ongoing SPI transfer without resetting internal state or address pointer |
| VCC (Pin 8) | Power Supply | 4.5–5.5 V nominal; powers EEPROM core, logic, and HV generator for write/erase operations |
Key Features
| Feature | Design Value |
|---|---|
| 16-byte page write | Enables burst programming up to 16 bytes within same page boundary, reducing total write cycles vs. byte-wise writes |
| Block write protection | Configurable via BP0/BP1 bits to protect 0%, 25%, 50%, or 100% of memory - prevents accidental overwrites of critical sectors |
| HOLD functionality | Allows safe interruption of multi-byte reads/writes without reinitializing CS or losing position - essential for real-time OS contexts |
| Power-on write disable | Internal write enable latch resets at power-up, preventing spurious writes during brown-out or reset conditions |
| ESD robustness | 4 kV HBM ESD rating on all pins ensures reliability in handling and assembly environments |
Applications
| Industrial Sensor Calibration Storage | Embedded Controller Configuration |
|---|---|
|
Use Scenario: Storing factory-calibrated sensor offset/gain coefficients in HVAC controllers or pressure transmitters. IC Role / Device Role / Timing Role: Nonvolatile parameter store accessed at boot and during field recalibration; SPI interface enables direct MCU integration without glue logic. Use Value: Retains calibration data across 200+ years and 1M cycles, eliminating battery-backed RAM or external NVRAM complexity. |
Use Scenario: Holding user-defined I/O mapping, communication baud rates, and alarm thresholds in PLC modules. IC Role / Device Role / Timing Role: Configuration EEPROM interfaced via SPI during initialization; HOLD pin allows safe parameter updates mid-operation. Use Value: Block protection prevents corruption of critical setup data during firmware upgrades or transient faults. |
| Medical Device Settings Backup | Automotive Body Control Module Logs |
|
Use Scenario: Preserving patient-specific therapy parameters and usage history in portable infusion pumps. IC Role / Device Role / Timing Role: Secure, low-power storage element accessed infrequently but requiring guaranteed retention and tamper resistance. Use Value: WP pin + WPEN bit enables hardware-level write lock during normal operation, meeting IEC 62304 data integrity requirements. |
Use Scenario: Recording door lock actuation counts, window position history, and fault codes in automotive BCMs. IC Role / Device Role / Timing Role: High-reliability event logger using page-write optimization to minimize wear on frequently updated sectors. Use Value: 5 ms max write time and 1M endurance support daily logging over 10+ year vehicle lifetimes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPI Serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 25AA080-I/SN | 1.8–5.5 V supply range; 1 MHz max clock; supports wider voltage and lower temp operation | Valid for 3.3 V systems and extended low-temp environments where 25C080-I/SN cannot operate | Select when system VCC varies or drops below 4.5 V; requires no level-shifting circuitry |
| 25LC080-I/SN | 2.5–5.5 V supply; 2 MHz max clock; identical pinout and instruction set | Compatible with mixed-voltage designs (e.g., 3.3 V MCU + 5 V peripherals) but not 5 V-only rails | Choose for 3.3 V–5 V hybrid systems needing higher speed than 25AA080 but broader voltage margin than 25C080 |
Compared with 25C080-I/SN, 25AA080-I/SN offers wider voltage flexibility and lower-speed tolerance, while 25LC080-I/SN provides intermediate voltage support and higher clock rate - both retain identical SOIC-8 packaging, SPI protocol, and memory organization for drop-in layout reuse.
Availability
25C080-I/SN is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded controller configuration, medical device settings backup, and automotive body control module log storage requiring stable component supply across extended product lifecycles.
Supply support for 25C080-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 memory solutions, headquartered in Chandler, Arizona, with global design, manufacturing, and sales operations.
The 25C080 belongs to Microchip's legacy SPI Serial EEPROM product line, designed specifically for cost-sensitive, 5 V-only industrial and automotive applications requiring reliable nonvolatile storage with minimal external components.
FAQ
What is the operating voltage range for the 25C080-I/SN?
The 25C080-I/SN operates strictly within 4.5 V to 5.5 V. It is not rated for 3.3 V or lower supply voltages. Attempting to power it below 4.5 V may result in unreliable read/write behavior or failure to complete internal write cycles. This distinguishes it from the 25AA080-I/SN (1.8–5.5 V) and 25LC080-I/SN (2.5–5.5 V), which support wider voltage ranges.
Does the 25C080-I/SN support hardware write protection?
Yes, the 25C080-I/SN supports hardware write protection via the WP pin in conjunction with the WPEN bit in its Status register. When WPEN = 1 and WP = low, writes to nonvolatile Status register bits are disabled. All other functions remain operational. This feature is confirmed in the Device Selection Table and Section 2.3 of the DS21230E datasheet.
What is the maximum clock frequency supported by the 25C080-I/SN?
The 25C080-I/SN supports up to 3 MHz maximum clock frequency, but only when VCC is between 4.5 V and 5.5 V. At lower voltages (not applicable to this part), frequency limits decrease - however, since 25C080-I/SN is specified exclusively for 4.5–5.5 V operation, 3 MHz is its definitive maximum SPI clock rate.
How many write/erase cycles does the 25C080-I/SN guarantee?
The 25C080-I/SN guarantees 1 million write/erase cycles per memory location, as stated in the AC Characteristics table (Param. No. 21) and Features section of DS21230E. This endurance rating is ensured through characterization and applies across the full industrial temperature range (−40°C to +85°C).
Is the 25C080-I/SN pin-compatible with other members of the 25XX080 family?
Yes, the 25C080-I/SN shares identical pinout, package (SOIC-8), instruction set, and SPI timing protocol with 25AA080-I/SN and 25LC080-I/SN. All three parts use the same PDIP/SOIC pin assignments and functional definitions per Table 2-1, enabling PCB layout reuse across voltage variants - though voltage and speed ratings differ.
25C080-I/SN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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:
- 3 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
25C080-I/SN FAQ
1.How can I place an order for 25C080-I/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 25C080-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 25C080-I/SN reliable?
The price and inventory of 25C080-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 25C080-I/SN is usually 5 days.
3.What payment methods are accepted for 25C080-I/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 25C080-I/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 25C080-I/SN?
25C080-I/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 25C080-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 25C080-I/SN?
For technical support, including 25C080-I/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 25C080-I/SN requirements.
6.How does Aetrix verify that 25C080-I/SN is sourced from the original manufacturer or authorized distributors?
All 25C080-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 25C080-I/SN meets industry standards.
7.What is the process for return or replacement of 25C080-I/SN?
All 25C080-I/SN units undergo pre-shipment inspection (PSI). If there is an issue with 25C080-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 25C080-I/SN part is unused and in its original packaging.
Return procedure for 25C080-I/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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