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Microchip Technology 25LC080A-E/SN
- Part No.:
- 25LC080A-E/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
25LC080A-E/SN.pdf
- Description:
- IC EEPROM 8KBIT SPI 10MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:449
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Product details
Overview
25LC080A-E/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 operation (−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 - used for firmware storage, calibration data logging, and configuration parameter backup in embedded control systems.
For engineers reviewing the 25LC080A-E/SN datasheet, 25LC080A-E/SN pinout, 25LC080A-E/SN application, or 25LC080A-E/SN equivalent, this page provides verified electrical specs, validated SOIC-8 pin mapping, real-world use cases in automotive and industrial systems, and two confirmed alternative parts with documented functional and packaging differences.
Technical Context
The 25LC080A-E/SN implements a standard SPI Mode 0,0 interface with separate SI and SO lines, requiring CS, SCK, SI, SO, WP, HOLD, VCC, and VSS. Its internal architecture includes a write-enable latch, status register with WIP/WEL/BP bits, and hardware block protection controlled by BP0/BP1 bits and the WP pin when WPEN=1.
It features self-timed write cycles (≤5 ms), sequential read with automatic address increment, and hold functionality that suspends ongoing transfers without resetting the command sequence. The device enters low-power standby mode when CS is high and maintains high-impedance SO during deselect or hold states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 × 8-bit) - sufficient for bootloader config, sensor calibration tables, or small firmware patches. |
| Interface | SPI Mode 0,0 - compatible with PIC® MCU SPI peripherals and generic GPIO bit-banged implementations. |
| Page Size | 16 bytes - limits atomic writes to within one physical page; crossing page boundaries wraps data instead of advancing. |
| Max Clock Frequency | 10 MHz at VCC ≥ 4.5V - enables fast read/write throughput up to ~1.25 MB/s theoretical serial bandwidth. |
| Write Cycle Time | ≤5 ms - deterministic internal erase-and-write timing; no external delay required beyond CS deassertion. |
| Endurance & Retention | 1,000,000 cycles / >200 years - validated for long-life deployment in unattended industrial nodes. |
| Supply Voltage Range | 2.5V–5.5V - interoperable with 3.3V and 5V logic domains without level shifting. |
| Temperature Range | −40°C to +85°C (Industrial grade) - qualified for under-hood and factory-floor environments. |
Pinout & Package
25LC080A-E/SN is packaged in an 8-lead SOIC (SN) with 1.27 mm pitch, 3.90 mm body width, and Pb-free RoHS-compliant construction. Pin 1 is marked with a notch or dot; package meets JEDEC MS-012AA standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Chip Select Input | Active-low enable: must be low for all SPI transactions; rising edge initiates internal write cycle after valid write sequence. |
| SO (Pin 2) | Serial Data Output | Tri-state output: drives data on falling edge of SCK during read; high-impedance when CS high or HOLD low. |
| WP (Pin 3) | Hardware Write-Protect | Blocks Status Register writes only when WPEN=1 and WP=low; no effect on memory array writes unless BP bits are set. |
| VSS (Pin 4) | Ground Reference | Primary return path for all I/O and core logic; requires low-impedance connection to system GND plane. |
| SI (Pin 5) | Serial Data Input | Latches instruction/address/data on rising edge of SCK; accepts MSB-first 8-bit commands per SPI frame. |
| SCK (Pin 6) | Serial Clock Input | Synchronizes all data transfers; max 10 MHz rate defined per VCC level; idle low in Mode 0,0. |
| HOLD (Pin 7) | Transfer Pause Control | Halts ongoing SPI sequence when pulled low while SCK is low; resumes on next SCK edge after HOLD returns high. |
| VCC (Pin 8) | Power Supply | 2.5V–5.5V operating range; internal voltage regulator enables stable EEPROM operation across rail variation. |
Key Features
| Feature | Design Value |
|---|---|
| Block Write Protection | Configurable via BP0/BP1 bits to protect none, upper 1/4 (0300h–03FFh), upper 1/2 (0200h–03FFh), or entire array (0000h–03FFh). |
| Hardware Write-Protect | WP pin + WPEN bit enables selective lock of Status Register writes while allowing memory access - critical for field-upgrade safety. |
| Hold Functionality | Pauses active SPI transfer without losing state - allows host MCU to service higher-priority interrupts mid-sequence. |
| Low-Power Standby | ≤1 μA ICCS at 2.5V - reduces system quiescent current in battery-backed or energy-harvesting applications. |
| ESD Robustness | >4 kV HBM - ensures reliability during board handling and in electrically noisy industrial enclosures. |
| Pb-Free & RoHS | Compliant with JEDEC J-STD-609A Class 3 marking; matte tin finish on SOIC leads eliminates lead-based solder concerns. |
Applications
| Industrial PLC Configuration Storage | Automotive ECU Calibration Data |
|---|---|
Use Scenario: Storing I/O mapping, PID tuning parameters, and fault log history in programmable logic controllers deployed in factory automation. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed via SPI during boot and runtime updates; retains values across power cycles and brownouts. Use Value: Enables field reconfiguration without firmware reflashing; 1M-cycle endurance supports decades of maintenance cycles in 24/7 operation. |
Use Scenario: Holding sensor offset corrections, fuel trim tables, and diagnostic trouble code (DTC) history in engine control units operating under hood temperatures. IC Role / Device Role / Timing Role: SPI-connected parameter store synchronized with CAN message triggers; withstands −40°C to +85°C ambient with no derating. Use Value: Eliminates need for external backup capacitors or supercaps; >200-year data retention ensures calibration integrity over vehicle lifetime. |
| Medical Device Setup Profiles | Smart Meter Firmware Patch Storage |
Use Scenario: Saving user-defined therapy modes, alarm thresholds, and audit trail metadata in portable infusion pumps and diagnostic monitors. IC Role / Device Role / Timing Role: Secure, tamper-resistant storage accessed only during authorized service mode; WP pin physically tied low in sealed housing. Use Value: Meets IEC 62304 software lifecycle requirements via hardware-enforced write protection and traceable endurance metrics. |
Use Scenario: Storing delta updates for meter firmware in utility-grade electricity meters deployed in outdoor substations. IC Role / Device Role / Timing Role: Low-power EEPROM interfaced to ARM Cortex-M0+ host; pages written sequentially during OTA update windows. Use Value: 16-byte page size aligns with AES-128 encrypted packet payloads; 5 ms write time enables sub-second patch commits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 25LC080B-E/SN | 32-byte page size vs. 16-byte; identical voltage/temp range and pinout. | Better suited for larger firmware segments or bulk parameter sets where page-crossing logic is undesirable. | Select 25LC080B-E/SN if application writes >16 bytes per transaction and requires guaranteed single-page atomicity. |
| AT25080B-SSHL-T | Same 8 Kbit density and SOIC-8 package; supports 20 MHz clock (vs. 10 MHz); different status register layout and WP behavior. | Higher-speed SPI operation enables faster boot-time config loading; requires firmware adaptation for status bit interpretation. | Choose AT25080B-SSHL-T only when system clock budget permits 20 MHz SPI and design can accommodate Atmel-specific command set. |
Compared with 25LC080A-E/SN, the 25LC080B-E/SN offers double the page buffer for fewer write cycles per kB, while the AT25080B-SSHL-T trades Microchip's proven industrial qualification for higher speed and alternate vendor toolchain support - neither is pin-compatible nor drop-in replaceable without validation.
Availability
25LC080A-E/SN is available at Aetrix Electronics and suitable for industrial PLC configuration storage, automotive ECU calibration data retention, and medical device setup profile backup requiring stable component supply across extended product lifecycles.
Supply support for 25LC080A-E/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 U.S.-based semiconductor company specializing in microcontrollers, analog devices, and nonvolatile memory solutions for embedded control applications.
The 25LC080A-E/SN belongs to Microchip's 25XX080A/B SPI EEPROM family, designed specifically for reliable, low-power, byte-addressable configuration storage in resource-constrained microcontroller systems.
FAQ
What is the maximum SPI clock frequency supported by the 25LC080A-E/SN?
The 25LC080A-E/SN supports up to 10 MHz SPI clock frequency when VCC is 4.5V–5.5V. At 2.5V–4.5V, the maximum clock drops to 5 MHz, and at 1.8V–2.5V (not applicable to this part), it would be 3 MHz. These limits ensure reliable setup/hold timing per AC specifications in DS21808D.
Does the 25LC080A-E/SN require external pull-up resistors on its SO or SI lines?
No, the 25LC080A-E/SN does not require external pull-ups on SO or SI. Its SO output is actively driven and tri-stated when deselected; SI is CMOS input with no internal pull-up. Pull-ups may be needed only if shared bus topology demands weak biasing - but not for basic point-to-point SPI connections.
How does the HOLD pin function during an ongoing read sequence in the 25LC080A-E/SN?
When HOLD is pulled low during an active read, the 25LC080A-E/SN immediately places SO in high-impedance state and ignores further SCK edges until HOLD returns high while SCK is low. The internal address pointer remains unchanged, so reading resumes from the same byte upon resumption - preserving sequential continuity.
Can the 25LC080A-E/SN be used in a 1.8V system?
No, the 25LC080A-E/SN is rated for 2.5V–5.5V operation only. For 1.8V systems, Microchip's 25AA080A-E/SN (1.8V–5.5V, same 16-byte page) is the functionally equivalent alternative - the 'LC' suffix denotes the 2.5V minimum supply requirement.
What happens if a page write crosses a 16-byte boundary in the 25LC080A-E/SN?
If a page write command attempts to cross a 16-byte boundary, data wraps around to the start of the current page instead of advancing to the next page. For example, writing 18 bytes starting at address 0x000F overwrites bytes 0x000F–0x001F, then wraps to overwrite 0x0000–0x0001 - corrupting prior data unless software enforces page alignment.
25LC080A-E/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 ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
25LC080A-E/SN FAQ
1.How can I place an order for 25LC080A-E/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 25LC080A-E/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-E/SN reliable?
The price and inventory of 25LC080A-E/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-E/SN is usually 5 days.
3.What payment methods are accepted for 25LC080A-E/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 25LC080A-E/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 25LC080A-E/SN?
25LC080A-E/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 25LC080A-E/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-E/SN?
For technical support, including 25LC080A-E/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 25LC080A-E/SN requirements.
6.How does Aetrix verify that 25LC080A-E/SN is sourced from the original manufacturer or authorized distributors?
All 25LC080A-E/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-E/SN meets industry standards.
7.What is the process for return or replacement of 25LC080A-E/SN?
All 25LC080A-E/SN units undergo pre-shipment inspection (PSI). If there is an issue with 25LC080A-E/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-E/SN part is unused and in its original packaging.
Return procedure for 25LC080A-E/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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