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Microchip Technology 25LC080B-I/MS
- Part No.:
- 25LC080B-I/MS
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
25LC080B-I/MS.pdf
- Description:
- IC EEPROM 8KBIT SPI 10MHZ 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,898
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Product details
Overview
25LC080B-I/MS from Microchip Technology Inc. is an 8 Kbit SPI Serial EEPROM with 1024 × 8-bit organization, 32-byte page write capability, 10 MHz max clock frequency, and industrial temperature range (–40°C to +85°C). It operates from 2.5V to 5.5V and is used for nonvolatile parameter storage in microcontroller-based embedded systems requiring reliable, low-power data retention.
For engineers reviewing the 25LC080B-I/MS datasheet, 25LC080B-I/MS pinout, 25LC080B-I/MS application, or 25LC080B-I/MS equivalent, key selection criteria include page size (32 bytes), write cycle time (≤5 ms), HOLD/CS-controlled pause functionality, and hardware write protection via WP pin and BP0/BP1 status bits.
Technical Context
The 25LC080B-I/MS implements a standard SPI Mode 0,0/Master-Slave interface with separate SI (data in) and SO (data out) lines, enabling full-duplex communication under CS control. Its internal architecture includes a 32-byte page latch, status register with WIP/WEL/BP0/BP1 bits, and high-voltage generator for EEPROM programming.
It supports sequential read across address boundaries with automatic rollover at 03FFh, and enforces strict page-boundary alignment during write operations - crossing a 32-byte boundary wraps data to the start of the current page. The HOLD pin suspends ongoing transfers while preserving internal state, allowing host interrupt servicing without reinitialization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 × 8-bit array), sufficient for firmware configuration, calibration data, or device identity storage |
| Page Size | 32 bytes - defines maximum contiguous write length per CS assertion; critical for minimizing write latency in burst updates |
| Max Clock Frequency | 10 MHz at VCC ≥ 4.5V - enables fast read/write throughput up to 1.25 MB/s theoretical SPI bandwidth |
| Write Cycle Time | ≤5 ms - self-timed internal erase/write; determines minimum interval between write commands |
| Endurance | 1,000,000 erase/write cycles - supports long-term field operation in logging or counter applications |
| Data Retention | >200 years at +25°C - ensures nonvolatile storage integrity over product lifetime without refresh |
| Supply Voltage Range | 2.5V to 5.5V - compatible with 3.3V and 5V logic domains, simplifying power domain integration |
Pinout & Package
25LC080B-I/MS is housed in an 8-lead MSOP (Micro Small Outline Package) with 0.65 mm pitch, 3.00 mm × 4.90 mm body, and Pb-free/RoHS-compliant construction. Pin 1 is marked by a notch or beveled corner on the package top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Chip Select Input | Active-low enable; must go high after final data bit to trigger internal write cycle; deselects SO to high-Z for bus sharing |
| SO (Pin 2) | Serial Data Output | Tri-state output; data valid after SCK falling edge; enters high-Z when CS high or HOLD low |
| WP (Pin 3) | Hardware Write-Protect | Blocks Status Register writes when WPEN=1 and WP=low; no effect on memory reads or non-protected writes |
| VSS (Pin 4) | Ground Reference | Primary return path for all I/O and core circuitry; must be low-impedance connection to system GND plane |
| SI (Pin 5) | Serial Data Input | Latches instruction/address/data on SCK rising edge; requires setup/hold timing compliance per VCC level |
| SCK (Pin 6) | Serial Clock Input | Synchronizes all SPI transfers; rise/fall times ≤500 ns required; shared across multiple peripherals |
| HOLD (Pin 7) | Transfer Pause Control | Halts ongoing SPI sequence when pulled low during SCK low; preserves internal state for resume without restart |
| VCC (Pin 8) | Supply Voltage | Power input for core logic and EEPROM array; bypass capacitor (0.1 µF) required near pin for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| 32-byte page write buffer | Reduces number of CS assertions needed for multi-byte updates, lowering total write time vs. byte-write mode |
| Block write protection (BP0/BP1) | Enables selective locking of upper 1/4, 1/2, or full memory array - prevents accidental overwrite of critical firmware parameters |
| HOLD pin with state retention | Allows host MCU to service higher-priority interrupts mid-transfer without losing position or re-synchronizing |
| Power-on write disable | WEL latch resets at power-up, eliminating risk of spurious writes during supply ramp-up or brownout conditions |
| ESD protection >4 kV | Meets IEC 61000-4-2 Level 3 requirements, supporting robust handling in manufacturing and field environments |
Applications
| Industrial Sensor Calibration | Medical Device Configuration |
|---|---|
Use Scenario: Storing factory-calibrated sensor offset/gain coefficients and linearization tables in portable gas analyzers. IC Role / Device Role / Timing Role: Nonvolatile parameter store accessed during boot and periodic self-test; retains values across power cycles. Use Value: Enables traceable, field-updatable calibration without requiring external programming hardware or battery-backed RAM. | Use Scenario: Holding user-selectable therapy modes, alarm thresholds, and usage logs in infusion pumps. IC Role / Device Role / Timing Role: Secure configuration vault with hardware write-protection enabled for regulatory compliance (IEC 62304). Use Value: Prevents unauthorized modification of safety-critical settings while allowing authorized updates via authenticated firmware commands. |
| Automotive Body Control Module | Smart Energy Meter Firmware Patching |
Use Scenario: Recording door lock/unlock event counters and mirror position presets in vehicle BCMs operating across –40°C to +85°C. IC Role / Device Role / Timing Role: Industrial-temp EEPROM interfacing directly with PIC MCU SPI port; withstands automotive thermal cycling. Use Value: Provides guaranteed 200-year data retention and 1M endurance for infrequent but mission-critical state persistence. | Use Scenario: Storing delta patches applied to meter firmware during OTA updates to minimize bandwidth and flash wear. IC Role / Device Role / Timing Role: Low-power, page-efficient storage for patch metadata and checksums; accessed only during update windows. Use Value: Reduces update time by 40% vs. byte-write due to 32-byte page buffering, extending meter battery life in battery-powered deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 25LC080B-I/SN | Same electrical specs and pinout, but in 8-lead SOIC (3.9 mm width) instead of MSOP; larger footprint, higher thermal mass | Better suited for through-hole prototyping or legacy PCBs with SOIC footprints; less space-constrained than MSOP | Select when board layout accommodates wider package or requires manual soldering compatibility |
| AT25080B-MAHL-T | 8 Kbit SPI EEPROM with 32-byte page, but supports 1.8V–5.5V VCC range and has faster 20 MHz max clock; different status register bit mapping | Enables single-supply operation in 1.8V logic systems; not drop-in due to differing WRSR bit definitions and timing margins | Choose for ultra-low-voltage designs or higher-speed interfaces where Microchip's timing constraints limit throughput |
Compared with 25LC080B-I/MS, the 25LC080B-I/SN offers identical functionality in a larger SOIC package for ease of assembly, while AT25080B-MAHL-T extends voltage range and speed at the cost of register-level compatibility - both require validation of hold-time margins and status register interaction in target firmware.
Availability
25LC080B-I/MS is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device configuration, automotive body control modules, and smart energy meter firmware patching requiring stable component supply and long-term lifecycle support.
Supply support for 25LC080B-I/MS 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 Flash-IP solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 25LC080B 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 across industrial, automotive, and medical markets.
FAQ
What is the maximum clock frequency supported by the 25LC080B-I/MS?
The 25LC080B-I/MS supports up to 10 MHz clock frequency when VCC is 4.5V to 5.5V, 5 MHz at 2.5V to <4.5V, and 3 MHz at 1.8V to <2.5V - though the 25LC080B-I/MS variant is rated for 2.5V–5.5V operation only, so its usable maximum is 10 MHz. This allows high-speed read access and efficient page writes in time-critical applications.
How does the 25LC080B-I/MS handle page boundary crossings during write operations?
The 25LC080B-I/MS enforces strict 32-byte page alignment: if a page write command crosses a 32-byte boundary (e.g., starting at address 0x03E0 with 32 bytes), data wraps to the start of the same page (0x03E0) instead of continuing into the next page. This behavior is inherent to the 25LC080B-I/MS architecture and requires firmware to split writes at page boundaries.
What is the function of the HOLD pin on the 25LC080B-I/MS?
The HOLD pin on the 25LC080B-I/MS pauses ongoing SPI communication while preserving internal state - including address pointer and instruction phase - allowing the host MCU to service higher-priority interrupts. To activate, HOLD must be pulled low while SCK is low; resuming requires bringing HOLD high while SCK remains low. This feature is fully supported in the 25LC080B-I/MS.
Can the 25LC080B-I/MS be used in 1.8V systems?
No, the 25LC080B-I/MS is specified for 2.5V to 5.5V operation only. For 1.8V systems, Microchip offers the 25AA080B-I/MS variant, which shares the same 32-byte page size and pinout but supports 1.8V–5.5V. Using 25LC080B-I/MS below 2.5V violates its absolute minimum VCC rating and may result in unreliable read/write behavior or data corruption.
What write protection mechanisms does the 25LC080B-I/MS provide?
The 25LC080B-I/MS provides three-tiered write protection: (1) software-controlled via WREN/WRDI instructions and WEL bit, (2) status-register-based block protection (BP0/BP1) locking 0%, 25%, 50%, or 100% of memory, and (3) hardware protection using the WP pin in conjunction with the WPEN bit. All mechanisms are active and validated for the 25LC080B-I/MS.
25LC080B-I/MS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm 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:
- 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-MSOP
25LC080B-I/MS FAQ
1.How can I place an order for 25LC080B-I/MS through Aetrix?
Please submit a Request for Quotation (RFQ) for 25LC080B-I/MS 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 25LC080B-I/MS reliable?
The price and inventory of 25LC080B-I/MS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 25LC080B-I/MS is usually 5 days.
3.What payment methods are accepted for 25LC080B-I/MS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 25LC080B-I/MS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 25LC080B-I/MS?
25LC080B-I/MS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 25LC080B-I/MS 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 25LC080B-I/MS?
For technical support, including 25LC080B-I/MS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 25LC080B-I/MS requirements.
6.How does Aetrix verify that 25LC080B-I/MS is sourced from the original manufacturer or authorized distributors?
All 25LC080B-I/MS 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 25LC080B-I/MS meets industry standards.
7.What is the process for return or replacement of 25LC080B-I/MS?
All 25LC080B-I/MS units undergo pre-shipment inspection (PSI). If there is an issue with 25LC080B-I/MS, 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 25LC080B-I/MS part is unused and in its original packaging.
Return procedure for 25LC080B-I/MS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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