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Microchip Technology 25LC080A-I/SN
- Part No.:
- 25LC080A-I/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
25LC080A-I/SN.pdf
- Description:
- IC EEPROM 8KBIT SPI 10MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:596
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Product details
Overview
25LC080A-I/SN from Microchip Technology Inc. is an 8 Kbit SPI Serial EEPROM with 1024 × 8-bit organization, 16-byte page write capability, and industrial temperature range (−40°C to +85°C). It operates from 2.5V to 5.5V, supports up to 10 MHz clock frequency, and delivers 1,000,000 erase/write cycles with >200 years data retention - deployed in embedded control firmware storage, sensor calibration data logging, and power-management configuration memory.
For engineers reviewing the 25LC080A-I/SN datasheet, 25LC080A-I/SN pinout, 25LC080A-I/SN application, or 25LC080A-I/SN equivalent, key selection criteria include verified 16-byte page size, SOIC-8 (SN) package compatibility, VCC=2.5–5.5V operation, HOLD/CS/WP pin functionality, and block write protection granularity (none/¼/½/all array).
Technical Context
The 25LC080A-I/SN implements a standard SPI Mode 0,0 interface with separate SI (data in) and SO (data out) lines, requiring CS low and HOLD high for normal operation. Its internal architecture includes an 8-bit instruction register, page latches, and HV generator for EEPROM programming.
Write operations require explicit WREN instruction followed by WRITE command and address; page writes are limited to 16 bytes within a single physical page (000h–00Fh, 010h–01Fh, etc.). The Status Register provides real-time WIP, WEL, BP0/BP1, and WPEN bits accessible via RDSR during active or write-in-progress states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 × 8-bit), sufficient for firmware boot flags, device ID, or small configuration tables |
| Page Size | 16 bytes - defines maximum contiguous write length without crossing page boundary |
| Max Clock Frequency | 10 MHz at VCC ≥ 4.5V - enables fast read/write in high-throughput microcontroller systems |
| Write Cycle Time | 5 ms max - determines minimum time between successive write commands |
| Endurance | 1,000,000 erase/write cycles - supports long-life field deployments in industrial controllers |
| Data Retention | >200 years at +25°C - ensures nonvolatile storage integrity across product lifecycle |
| VCC Range | 2.5V to 5.5V - compatible with 3.3V and 5V logic domains without level shifting |
Pinout & Package
25LC080A-I/SN is packaged in 8-lead SOIC (SN), 3.90 mm body width, RoHS-compliant, with standard JEDEC outline and 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Chip Select Input | Active-low enable: must be low for SPI communication; high places SO in high-impedance for bus sharing |
| SO (Pin 2) | Serial Data Output | Outputs memory data on falling edge of SCK; tri-stated when CS high or HOLD low |
| WP (Pin 3) | Write-Protect Pin | Hardware lock: disables Status Register writes when WP low and WPEN bit = 1 |
| VSS (Pin 4) | Ground Reference | Return path for all I/O and core circuitry; must be connected before VCC |
| SI (Pin 5) | Serial Data Input | Accepts instructions, addresses, and write data on rising edge of SCK |
| SCK (Pin 6) | Serial Clock Input | Synchronizes all SPI transfers; timing critical for AC specs (e.g., TCSS, THD) |
| HOLD (Pin 7) | Hold Input | Pauses ongoing SPI sequence without reset; requires SCK low to assert/deassert |
| VCC (Pin 8) | Supply Voltage | Power input (2.5–5.5V); powers internal charge pump for EEPROM programming |
Key Features
| Feature | Design Value |
|---|---|
| Block Write Protection | Selectable protection of none, upper 1/4 (0300h–03FFh), upper 1/2 (0200h–03FFh), or full array (0000h–03FFh) via BP0/BP1 bits |
| Hardware Write Protection | WP pin + WPEN bit enables hardware-enforced lock on Status Register writes independent of software state |
| Self-Timed Write Cycles | No external timing control needed - internal logic manages 5 ms erase/write; WIP bit indicates completion |
| Power-On Data Protection | Write enable latch resets at power-up; WREN required before any write - prevents inadvertent writes during brownout |
| Low Standby Current | 1 μA at VCC = 2.5V and TAMB = −40°C to +85°C - suitable for battery-backed or energy-sensitive applications |
Applications
| Industrial PLC Configuration Storage | Medical Device Calibration Data Logging |
|---|---|
|
Use Scenario: Storing I/O mapping, PID tuning parameters, and alarm thresholds in programmable logic controllers operating continuously in factory environments. IC Role / Device Role / Timing Role: Nonvolatile configuration memory accessed via SPI during boot and runtime updates; uses HOLD to pause during interrupt servicing. Use Value: 1,000,000 endurance and >200-year retention ensure parameter integrity over 15+ year equipment lifespans without recalibration. |
Use Scenario: Recording sensor offset/gain coefficients and patient-specific settings in portable diagnostic instruments with infrequent but critical firmware updates. IC Role / Device Role / Timing Role: SPI EEPROM storing calibrated values written once per device calibration cycle; WP pin prevents accidental overwrite during field service. Use Value: 16-byte page write and block protection allow safe, atomic updates to calibration blocks without risking adjacent configuration data. |
| Automotive Body Control Module Settings | Smart Energy Meter Firmware Flags |
|
Use Scenario: Holding seat/mirror position presets, lighting profiles, and door lock behavior in automotive BCMs exposed to −40°C to +85°C ambient. IC Role / Device Role / Timing Role: Industrial-grade serial EEPROM interfacing with MCU's SPI peripheral; leverages VCC=2.5–5.5V range for direct connection to 3.3V CAN subsystem rails. Use Value: Verified operation across full industrial temperature range and 2.5V minimum supply enables robustness in cold-cranking and load-dump conditions. |
Use Scenario: Storing tariff schedules, metering constants, and security keys in ANSI C12.22-compliant smart meters with tamper-resistant firmware partitions. IC Role / Device Role / Timing Role: Secure configuration store using BP1/BP0 bits to lock firmware update vectors while allowing runtime parameter writes to unprotected pages. Use Value: Hardware write protection (WP + WPEN) and nonvolatile status register prevent unauthorized modification of billing-critical parameters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 25AA080A-I/SN | Wider VCC range (1.8–5.5V); identical 16-byte page, 8 Kbit capacity, and SOIC-8 package | Supports 1.8V logic systems (e.g., ultra-low-power MCUs); not rated for automotive E-temp grade | Select 25AA080A-I/SN only if 1.8V operation is required; otherwise 25LC080A-I/SN offers better noise margin at 2.5V min. |
| AT25080B-MAHL-T | Same 8 Kbit, 16-byte page, SOIC-8; 20 MHz max clock; 100-year retention; different instruction set and status register layout | Requires firmware adaptation for RDSR/WRSR handling and page boundary management due to non-Microchip protocol | Use AT25080B-MAHL-T only when migrating legacy Atmel-based designs; avoid for new Microchip-ecosystem projects. |
Compared with 25AA080A-I/SN and AT25080B-MAHL-T, the 25LC080A-I/SN provides optimal balance of industrial temperature rating, proven interoperability with PIC® and dsPIC® MCUs, and minimal firmware porting effort - making it preferred for new designs targeting 2.5–5.5V embedded control.
Availability
25LC080A-I/SN is available at Aetrix Electronics and suitable for industrial PLC configuration storage, medical device calibration data logging, and automotive body control module settings requiring stable component supply across extended temperature and voltage ranges.
Supply support for 25LC080A-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 components, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 25LC080A-I/SN belongs to Microchip's 25XX080A/B family of SPI Serial EEPROMs, designed specifically for reliable, low-power nonvolatile data storage in resource-constrained embedded systems where pin count, board space, and firmware simplicity are critical.
FAQ
What is the maximum clock frequency supported by the 25LC080A-I/SN?
The 25LC080A-I/SN supports up to 10 MHz clock frequency when VCC is 4.5V to 5.5V. At 2.5V ≤ VCC < 4.5V, the maximum clock drops to 5 MHz, and no specification is provided below 2.5V. This graded timing ensures reliable operation across its full 2.5–5.5V supply range, and the 25LC080A-I/SN datasheet specifies AC parameters including TCSS, THD, and FCLK limits per voltage bin.
Does the 25LC080A-I/SN support page write operations, and what is the page size?
Yes, the 25LC080A-I/SN supports page write operations with a fixed 16-byte page size - confirmed in the Device Selection Table and functional description. Each page spans addresses like 000h–00Fh, 010h–01Fh, etc. Crossing a page boundary during a multi-byte write causes wraparound within the current page, so firmware must enforce alignment - a key constraint explicitly documented for the 25LC080A-I/SN 'A' version.
How does hardware write protection work on the 25LC080A-I/SN?
Hardware write protection on the 25LC080A-I/SN requires both the WP pin (Pin 3) to be low AND the WPEN bit (Status Register Bit 7) to be set high. When both conditions are met, writes to the nonvolatile Status Register bits (BP0, BP1, WPEN) are blocked - though array reads and writes remain enabled. This dual-condition mechanism prevents accidental lockout and is fully documented in Table 2-4 of the 25LC080A-I/SN datasheet.
What is the endurance and data retention specification for the 25LC080A-I/SN?
The 25LC080A-I/SN guarantees 1,000,000 erase/write cycles and >200 years of data retention at +25°C, as specified in TABLE 1-3 and confirmed in the Features section of the datasheet. These values are characterized and ensured by Microchip's Total Endurance™ model, and apply specifically to the 25LC080A-I/SN under industrial temperature conditions (−40°C to +85°C).
Can the 25LC080A-I/SN be used with 1.8V microcontrollers?
No - the 25LC080A-I/SN has a minimum VCC of 2.5V and is not specified for 1.8V operation. For 1.8V systems, Microchip recommends the pin-compatible 25AA080A-I/SN, which shares identical 16-byte page size, 8 Kbit capacity, and SOIC-8 packaging but extends VCC down to 1.8V. Using 25LC080A-I/SN below 2.5V violates absolute maximum ratings and risks unreliable communication or write failure.
25LC080A-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:
- 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:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
25LC080A-I/SN FAQ
1.How can I place an order for 25LC080A-I/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 25LC080A-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 25LC080A-I/SN reliable?
The price and inventory of 25LC080A-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 25LC080A-I/SN is usually 5 days.
3.What payment methods are accepted for 25LC080A-I/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 25LC080A-I/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 25LC080A-I/SN?
25LC080A-I/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 25LC080A-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 25LC080A-I/SN?
For technical support, including 25LC080A-I/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 25LC080A-I/SN requirements.
6.How does Aetrix verify that 25LC080A-I/SN is sourced from the original manufacturer or authorized distributors?
All 25LC080A-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 25LC080A-I/SN meets industry standards.
7.What is the process for return or replacement of 25LC080A-I/SN?
All 25LC080A-I/SN units undergo pre-shipment inspection (PSI). If there is an issue with 25LC080A-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 25LC080A-I/SN part is unused and in its original packaging.
Return procedure for 25LC080A-I/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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