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Microchip Technology 25LC080/SN
- Part No.:
- 25LC080/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
25LC080/SN.pdf
- Description:
- IC EEPROM 8KBIT SPI 2MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:425
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Product details
Overview
25LC080/SN from Microchip Technology Inc. is an 8 Kbit SPI Serial EEPROM IC with 1024 × 8-bit organization, 2.5–5.5 V supply range, and industrial temperature support (−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 serves as nonvolatile configuration storage in microcontroller-based embedded systems requiring reliable, low-power data retention.
For engineers reviewing the 25LC080/SN datasheet, 25LC080/SN pinout, 25LC080/SN application, or 25LC080/SN equivalent, this page delivers verified electrical specs, SPI timing constraints, pin-level functional roles, real-world use cases, and validated alternative parts - all aligned to DS21230E revision E.
Technical Context
The 25LC080/SN implements a standard SPI Mode 0,0 (CPOL=0, CPHA=0) interface with separate SI (data-in) and SO (data-out) lines, CS-controlled selection, and HOLD-driven pause capability. Its internal architecture includes a status register with WIP, WEL, BP0/BP1, and WPEN bits, enabling configurable block write protection across four memory segments.
It uses CMOS EEPROM technology with self-timed erase/write cycles, power-on write-disable logic, and built-in ESD protection (>4 kV). The device supports sequential read, byte/page write, and status register read/write operations - all initiated via 8-bit opcodes clocked on SCK rising edge with MSB-first transmission.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 8 Kbit (1024 × 8-bit), sufficient for firmware parameter tables or calibration data in resource-constrained MCU systems |
| Supply voltage | 2.5–5.5 V - compatible with 3.3 V and 5 V logic domains without level shifting |
| Max clock frequency | 2 MHz at VCC ≥ 2.5 V - enables fast configuration reads while maintaining timing margin in noisy environments |
| Write cycle time | 5 ms maximum - defines minimum interval between successive page writes; impacts boot-time initialization latency |
| Endurance | 1 million write/erase cycles - supports long-term field logging or counter applications with frequent updates |
| Data retention | Over 200 years at +25°C - ensures integrity of stored calibration or security keys across product lifetime |
| ESD protection | >4000 V HBM - provides robustness against handling and board-level electrostatic discharge events |
Pinout & Package
25LC080/SN is housed in an 8-lead narrow SOIC (150 mil) package per JEDEC MS-012, with gull-wing leads, 1.27 mm pitch, and 3.91 mm nominal width. Pin 1 is marked by a beveled corner or notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Chip Select Input | Active-low enable signal; must be held low during SPI transactions and high to enter standby mode (SO tri-stated) |
| SO (Pin 2) | Serial Data Output | Push-pull output delivering memory contents on falling SCK edge; high-impedance when CS high or HOLD active |
| WP (Pin 3) | Write-Protect Control | Hardware lock for status register writes when WPEN bit is set; does not affect memory array writes unless configured |
| VSS (Pin 4) | Ground Reference | Primary return path for all internal circuitry and I/O drivers; must be low-impedance connection to system GND |
| SI (Pin 5) | Serial Data Input | Latches instruction, address, and data on rising SCK edge; requires clean setup/hold timing relative to clock |
| SCK (Pin 6) | Serial Clock Input | Synchronizes all SPI transfers; rising edge clocks data into device, falling edge clocks data out of SO |
| HOLD (Pin 7) | Communication Pause | Halts ongoing SPI sequence without resetting state; must be asserted only when SCK is low to avoid metastability |
| VCC (Pin 8) | Power Supply | 2.5–5.5 V operating rail; bypass capacitor (0.1 µF) required near pin to suppress switching noise during write cycles |
Key Features
| Feature | Design Value |
|---|---|
| 16-byte page write buffer | Enables burst programming of up to 16 contiguous bytes per write cycle, reducing total write time vs. byte-by-byte writes |
| Configurable block protection | BP0/BP1 bits allow selective write-lock of 0%, 25%, 50%, or 100% of memory array - critical for safeguarding bootloader or security keys |
| HOLD pin functionality | Permits host MCU to suspend EEPROM communication mid-sequence to service higher-priority interrupts, then resume transparently |
| Power-on write disable | Ensures memory remains read-only until explicit WREN command is issued, preventing corruption during power ramp-up or brownout |
| Industrial temperature range | Guaranteed operation from −40°C to +85°C - suitable for automotive body control modules, industrial sensors, and outdoor IoT gateways |
Applications
| Industrial Sensor Calibration Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing factory-calibrated sensor offset/gain coefficients and linearization tables in a temperature/humidity sensor node. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed once per power cycle during initialization; no real-time timing constraints. Use Value: Enables plug-and-play accuracy without recalibration; leverages 200-year data retention and 1M endurance for field-deployed units. |
Use Scenario: Holding user-selectable therapy parameters and device ID in a portable infusion pump with battery backup. IC Role / Device Role / Timing Role: Secure, low-power parameter store interfaced via MCU SPI; write operations occur infrequently during setup. Use Value: Supports regulatory traceability requirements via guaranteed data integrity and hardware write protection of critical settings. |
| Automotive Body Control Module | Smart Energy Meter Firmware Patch Storage |
Use Scenario: Retaining door lock/unlock history, mirror position presets, and lighting profiles in a vehicle BCM. IC Role / Device Role / Timing Role: SPI-connected EEPROM used for persistent user preference storage; accessed during wake-up sequences. Use Value: Meets AEC-Q100-relevant reliability (1M cycles, >4 kV ESD) and operates across full industrial temp range. |
Use Scenario: Storing field-upgradable firmware patches and tariff tables in a utility-grade electricity meter with tamper detection. IC Role / Device Role / Timing Role: Secondary nonvolatile memory holding update payloads; written only during secure OTA sessions. Use Value: Hardware write protection (WP pin + BP bits) prevents unauthorized modification of billing-critical data. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 25AA080/SN | Wider VCC range (1.8–5.5 V); 1 MHz max clock; identical pinout and instruction set | Better suited for mixed-voltage systems or battery-powered designs with 1.8 V operation | Select when lower supply voltage support or broader voltage tolerance is required |
| 25LC080A/SN | Enhanced version with improved AC characteristics, tighter timing margins, and updated qualification; same 2.5–5.5 V range | Recommended for new designs per Microchip's notice; offers longer lifecycle availability and better production consistency | Prefer for new projects where long-term supply assurance and latest revision compliance are priorities |
Compared with 25LC080/SN, 25AA080/SN extends voltage flexibility downward to 1.8 V but trades off maximum speed (1 MHz vs. 2 MHz), while 25LC080A/SN maintains identical electrical specs with improved manufacturing robustness and official design-in recommendation.
Availability
25LC080/SN is available at Aetrix Electronics and suitable for industrial sensor calibration storage, medical device configuration memory, automotive body control modules, and smart energy meter firmware patch storage requiring stable component supply over extended production lifecycles.
Supply support for 25LC080/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 devices, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 25LC080 belongs to Microchip's legacy SPI Serial EEPROM product line, designed specifically for cost-sensitive, low-power embedded systems needing reliable nonvolatile storage with simple 4-wire SPI interface and hardware write protection.
FAQ
What is the maximum SPI clock frequency supported by the 25LC080/SN?
The 25LC080/SN supports up to 2 MHz maximum clock frequency when VCC is 2.5 V or higher. At lower supply voltages (1.8–2.5 V), the maximum clock rate drops to 1 MHz. This specification is defined in the AC Characteristics table of DS21230E and directly affects throughput during bulk read/write operations in the 25LC080/SN.
Does the 25LC080/SN require external pull-up resistors on its SPI lines?
No, the 25LC080/SN does not require external pull-ups on SI, SO, or SCK - these pins are actively driven. However, CS and WP should be pulled high with 10 kΩ resistors if not actively controlled, and HOLD must be tied high when unused to prevent unintended suspension of SPI communication in the 25LC080/SN.
How does hardware write protection work on the 25LC080/SN?
Hardware write protection on the 25LC080/SN is enabled when the WP pin is low AND the WPEN bit in the status register is set high. When active, it disables writes to nonvolatile status register bits only - memory array writes remain unaffected unless block protection bits (BP0/BP1) are also set. This dual-layer control is documented in Section 2.3 and Table 3-3 of the 25LC080/SN datasheet.
What is the purpose of the HOLD pin on the 25LC080/SN?
The HOLD pin on the 25LC080/SN allows the host MCU to pause an ongoing SPI transaction without aborting or reinitializing the sequence. When pulled low while SCK is low, it places SI, SCK, and SO in high-impedance state and freezes internal state - enabling interruption for higher-priority tasks. Resuming requires bringing HOLD high while SCK remains low, as specified in Section 2.6 of the 25LC080/SN datasheet.
Is the 25LC080/SN suitable for new designs?
No - Microchip explicitly states "Not recommended for new designs" in DS21230E, advising migration to the enhanced 25LC080A/SN or 25AA080A/SN variants. While the 25LC080/SN remains available and fully functional, new projects should select the 'A' revision for improved timing margins, updated qualification, and assured long-term supply continuity per Microchip's product change notification.
25LC080/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:
- 2 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- -
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
25LC080/SN FAQ
1.How can I place an order for 25LC080/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 25LC080/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 25LC080/SN reliable?
The price and inventory of 25LC080/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 25LC080/SN is usually 5 days.
3.What payment methods are accepted for 25LC080/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 25LC080/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 25LC080/SN?
25LC080/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 25LC080/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 25LC080/SN?
For technical support, including 25LC080/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 25LC080/SN requirements.
6.How does Aetrix verify that 25LC080/SN is sourced from the original manufacturer or authorized distributors?
All 25LC080/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 25LC080/SN meets industry standards.
7.What is the process for return or replacement of 25LC080/SN?
All 25LC080/SN units undergo pre-shipment inspection (PSI). If there is an issue with 25LC080/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 25LC080/SN part is unused and in its original packaging.
Return procedure for 25LC080/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
25LC080/SN Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
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AT24C02C-SSHM-T
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24LC01BT-I/OT
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M24C02-FMC6TG
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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24LC01BT-I/SN
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24AA02UIDT-I/OT
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AT24C08C-STUM-T
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