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Microchip Technology 25LC080D-E/ST
- Part No.:
- 25LC080D-E/ST
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
25LC080D-E/ST.pdf
- Description:
- IC EEPROM 8KBIT SPI 10MHZ 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,860
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Product details
Overview
25LC080D-E/ST from Microchip Technology is an 8 Kbit SPI Serial EEPROM with 1024 × 8-bit organization, 32-byte page size, and industrial/automotive temperature support (−40°C to +125°C). It operates from 2.5V to 5.5V, supports up to 10 MHz clock frequency, and delivers 5 mA read/write current at 5.5V - used for nonvolatile parameter storage in automotive control modules, industrial PLCs, and embedded sensor nodes.
For engineers reviewing the 25LC080D-E/ST datasheet, 25LC080D-E/ST pinout, 25LC080D-E/ST application, or 25LC080D-E/ST equivalent, key selection criteria include page write capability (32 bytes), hardware write protection via WP pin and STATUS register, HOLD functionality for interrupt-safe SPI pauses, and TSSOP-8 packaging suitable for space-constrained automotive PCB layouts.
Technical Context
The 25LC080D-E/ST implements a standard SPI Mode 0,0 interface with separate SI/SO lines, CS-controlled selection, and SCK-synchronized data transfer. Its internal architecture includes a 32-byte page latch, status register with WIP/WEL/BP bits, and high-voltage generator for EEPROM cell programming.
It supports sequential read across address boundaries with automatic rollover, byte/page write with CS-high-triggered internal write cycle (≤5 ms), and hardware/software write protection combining WP pin logic with BP0/BP1 bits for 0%, 25%, 50%, or 100% array protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 × 8-bit) - provides sufficient space for firmware configuration, calibration data, and event logs in resource-limited microcontroller systems. |
| Page Size | 32 bytes - enables efficient bulk writes within a single page without crossing boundaries; requires software management to avoid wraparound. |
| Max Clock Frequency | 10 MHz at VCC ≥ 4.5V - allows high-speed communication with modern MCUs while maintaining timing margin under worst-case voltage/temp conditions. |
| Write Cycle Time | ≤5 ms - defines minimum interval between write commands; impacts real-time logging latency and system responsiveness during parameter updates. |
| Endurance | >1 million erase/write cycles - ensures long-term reliability in applications requiring frequent field-updatable settings (e.g., motor control profiles). |
| Data Retention | >200 years at +25°C - guarantees persistent storage integrity over product lifetime without refresh, critical for safety-critical automotive subsystems. |
| Operating Temp | −40°C to +125°C (Automotive E grade) - qualified for under-hood and powertrain environments where thermal stress exceeds industrial limits. |
Pinout & Package
25LC080D-E/ST is packaged in an 8-lead TSSOP (4.4 mm body width), RoHS-compliant, with lead pitch of 0.65 mm and footprint optimized for automated assembly in automotive-grade PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Chip Select Input | Active-low enable signal; must be low for all SPI transactions; rising edge after write sequence initiates internal write cycle. |
| SO (Pin 2) | Serial Data Output | Tri-state output delivering memory contents on falling edge of SCK; enters high-Z when CS is high or HOLD is asserted. |
| WP (Pin 3) | Hardware Write-Protect Input | Low-active pin enabling nonvolatile block protection only when WPEN bit = 1; allows selective lockdown of configuration registers. |
| VSS (Pin 4) | Ground Reference | Primary return path for all internal circuitry; must be connected to system ground plane with low-impedance routing to minimize noise coupling. |
| SI (Pin 5) | Serial Data Input | Accepts instruction, address, and data bits on rising edge of SCK; latched synchronously to ensure robust sampling in noisy environments. |
| SCK (Pin 6) | Serial Clock Input | Master-generated clock controlling timing of all SPI transfers; rise/fall times ≤2 µs required for reliable operation at 10 MHz. |
| HOLD (Pin 7) | Communication Pause Control | Active-low input suspending ongoing SPI sequences without resetting state; enables MCU to service higher-priority interrupts mid-transfer. |
| VCC (Pin 8) | Supply Voltage | 2.5–5.5V operating range; decoupling capacitor (0.1 µF) required near pin to suppress supply transients during write operations. |
Key Features
| Feature | Design Value |
|---|---|
| 32-byte page write | Enables faster bulk writes than 16-byte variants (e.g., 25LC080C), reducing total time to update multi-byte configuration blocks. |
| HOLD pin support | Permits interruption of SPI transfers without losing context - essential for deterministic response in real-time automotive ECUs. |
| Hardware + software write protection | Combines WP pin and STATUS register BP bits to enforce layered security: physical lockout plus programmable segment-level access control. |
| Automotive temperature grade (E) | Qualified from −40°C to +125°C - meets AEC-Q100 stress test requirements for engine control, transmission, and ADAS subsystems. |
| Self-timed write cycles | Eliminates need for external timeout logic; internal timer completes erase/write in ≤5 ms regardless of VCC or temperature variation. |
Applications
| Automotive Engine Control Unit | Industrial Programmable Logic Controller |
|---|---|
Use Scenario: Storing fuel map coefficients, fault codes, and adaptive learning parameters subject to frequent updates during vehicle operation. IC Role / Device Role / Timing Role: Nonvolatile configuration storage interfacing directly with MCU's SPI peripheral; accessed during boot and runtime diagnostics. Use Value: 32-byte page writes reduce flash wear on host MCU; automotive temp grade ensures reliability under hood thermal cycling. |
Use Scenario: Retaining I/O mapping tables, ladder logic configuration, and calibration offsets across power cycles in factory automation controllers. IC Role / Device Role / Timing Role: Dedicated SPI EEPROM for deterministic, low-latency parameter access independent of main processor load. Use Value: HOLD pin allows uninterrupted operation during servo motion interrupts; >1M endurance supports decades of maintenance cycles. |
| Medical Infusion Pump | Smart Energy Meter |
Use Scenario: Securing drug delivery profiles, dosage history, and user audit logs with tamper-resistant storage compliant with IEC 62304. IC Role / Device Role / Timing Role: Safety-critical nonvolatile memory holding executable configuration validated before therapy initiation. Use Value: Hardware write protection (WP + WPEN) prevents accidental overwrite of calibrated flow rates during field servicing. |
Use Scenario: Logging kWh consumption, tariff schedules, and firmware version history in utility-grade meters deployed outdoors. IC Role / Device Role / Timing Role: Long-life data logger storing time-stamped energy events with guaranteed retention beyond 20 years. Use Value: >200-year data retention at +25°C and −40°C to +125°C operation ensure accuracy across meter lifetime and environmental extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 25LC080D-I/ST | Same 8 Kbit, 32-byte page, TSSOP-8 package, but rated for Industrial (−40°C to +85°C) only - no automotive qualification. | Lacks AEC-Q100 compliance and extended high-temp operation; unsuitable for under-hood use. | Select 25LC080D-I/ST only for cost-sensitive industrial designs where ambient temperature remains below +85°C. |
| AT25080B-SSHL-T | 8 Kbit SPI EEPROM with 32-byte page, SOIC-8 package, 1.8–5.5V supply, but max clock = 20 MHz and endurance = 100K cycles. | Higher speed but lower endurance and no HOLD pin - limits suitability for high-write-frequency automotive applications. | Choose AT25080B-SSHL-T when 20 MHz SPI bandwidth is required and write cycles are infrequent; verify HOLD absence does not impact system interrupt handling. |
Compared with 25LC080D-E/ST, the 25LC080D-I/ST sacrifices automotive qualification for lower cost, while the AT25080B-SSHL-T trades endurance and HOLD support for higher clock speed - making 25LC080D-E/ST optimal for safety-critical, high-reliability automotive and industrial deployments demanding both robustness and deterministic behavior.
Availability
25LC080D-E/ST is available at Aetrix Electronics and suitable for automotive control units, industrial PLCs, and medical device data loggers requiring stable component supply with full lifecycle traceability and long-term availability assurance.
Supply support for 25LC080D-E/ST 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 25LC080D-E/ST belongs to Microchip's 25XX080 family of SPI Serial EEPROMs, designed specifically for reliable, low-power nonvolatile storage in automotive, industrial, and medical systems requiring extended temperature operation and robust data integrity.
FAQ
What is the maximum clock frequency supported by the 25LC080D-E/ST?
The 25LC080D-E/ST 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 at 1.8V ≤ VCC < 2.5V (not applicable to 25LC080D-E/ST due to its 2.5V min VCC), it would be 3 MHz. This graded specification ensures timing compliance across its full 2.5–5.5V operating range.
Does the 25LC080D-E/ST support page write operations, and what is the page size?
Yes, the 25LC080D-E/ST supports page write operations with a fixed 32-byte page size - distinguishing it from the 16-byte page variant (25LC080C). This allows up to 32 bytes to be loaded into the page buffer before triggering the internal write cycle, improving efficiency for multi-byte configuration updates.
How does the HOLD pin function in the 25LC080D-E/ST, and what is its timing requirement?
The HOLD pin in the 25LC080D-E/ST pauses ongoing SPI communication without resetting the transaction state. It must be asserted low while SCK is low to activate; resuming requires bringing HOLD high while SCK remains low. Minimum HOLD setup/hold times are 20–80 ns depending on VCC, ensuring compatibility with fast MCU SPI peripherals.
What write protection mechanisms are implemented in the 25LC080D-E/ST?
The 25LC080D-E/ST implements dual-layer write protection: hardware-based via the WP pin (active-low) combined with the WPEN bit in the STATUS register, and software-configurable block protection using BP0/BP1 bits to lock 0%, 25%, 50%, or 100% of the memory array - providing flexible, tamper-resistant data security.
Is the 25LC080D-E/ST qualified for automotive applications, and what temperature range does it cover?
Yes, the 25LC080D-E/ST carries the "E" suffix indicating Automotive qualification per Microchip's internal standards, with guaranteed operation from −40°C to +125°C. While not formally AEC-Q100 certified in this datasheet revision, its E-grade screening and extended temperature validation make it suitable for engine control, body electronics, and ADAS subsystems.
25LC080D-E/ST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm 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-TSSOP
25LC080D-E/ST FAQ
1.How can I place an order for 25LC080D-E/ST through Aetrix?
Please submit a Request for Quotation (RFQ) for 25LC080D-E/ST 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 25LC080D-E/ST reliable?
The price and inventory of 25LC080D-E/ST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 25LC080D-E/ST is usually 5 days.
3.What payment methods are accepted for 25LC080D-E/ST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 25LC080D-E/ST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 25LC080D-E/ST?
25LC080D-E/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 25LC080D-E/ST 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 25LC080D-E/ST?
For technical support, including 25LC080D-E/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 25LC080D-E/ST requirements.
6.How does Aetrix verify that 25LC080D-E/ST is sourced from the original manufacturer or authorized distributors?
All 25LC080D-E/ST 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 25LC080D-E/ST meets industry standards.
7.What is the process for return or replacement of 25LC080D-E/ST?
All 25LC080D-E/ST units undergo pre-shipment inspection (PSI). If there is an issue with 25LC080D-E/ST, 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 25LC080D-E/ST part is unused and in its original packaging.
Return procedure for 25LC080D-E/ST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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