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Microchip Technology 25LC080CT-E/MS
- Part No.:
- 25LC080CT-E/MS
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
25LC080CT-E/MS.pdf
- Description:
- IC EEPROM 8KBIT SPI 10MHZ 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,619
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Product details
Overview
25LC080CT-E/MS from Microchip Technology is an 8 Kbit SPI Serial EEPROM with 1024 × 8-bit organization, 16-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 configuration storage in automotive control modules.
For engineers reviewing the 25LC080CT-E/MS datasheet, 25LC080CT-E/MS pinout, 25LC080CT-E/MS application, or 25LC080CT-E/MS equivalent, key selection considerations include its MSOP-8 package, hardware write-protection via WP pin, HOLD functionality for interrupt-safe SPI pauses, and automotive-grade endurance (>1M cycles, >200-year data retention).
Technical Context
The 25LC080CT-E/MS implements a standard SPI Mode 0,0 interface (CPOL = 0, CPHA = 0) with separate SI (data in) and SO (data out) lines, requiring CS, SCK, SI, SO, WP, HOLD, VCC, and VSS. Its internal architecture includes a write-enable latch, STATUS register with BP0/BP1 block protection bits, and high-voltage generator for EEPROM programming.
It supports byte and page writes (max 16 bytes/page), self-timed internal write cycles (≤5 ms), and sequential read with automatic address increment. The HOLD pin suspends ongoing SPI transfers without resetting state, enabling host MCU interrupt servicing while preserving transaction context.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 × 8-bit) - sufficient for firmware configuration, calibration tables, and device identity storage in compact embedded systems. |
| Interface | SPI-compatible serial bus (Mode 0,0) - interoperable with PIC® and most ARM/Cortex-M microcontrollers without protocol translation. |
| Max Clock Frequency | 10 MHz at VCC ≥ 4.5V - enables fast parameter loading during boot or runtime reconfiguration. |
| Page Size | 16 bytes - constrains burst writes to within physical page boundaries; software must manage wraparound to avoid unintended overwrites. |
| Endurance & Retention | >1 million erase/write cycles and >200 years data retention - validated for automotive ECU logging and infotainment settings storage. |
| Temperature Range | –40°C to +125°C (Automotive E grade) - qualified for under-hood and transmission-control applications per AEC-Q100 stress requirements. |
| Supply Voltage | 2.5V to 5.5V - compatible with 3.3V and 5V system rails, eliminating level-shifting in mixed-voltage designs. |
Pinout & Package
25LC080CT-E/MS is housed in an 8-lead MSOP (Mini Small Outline Package), 3.0 mm × 3.0 mm body, 0.65 mm pitch, RoHS-compliant and Pb-free. Pin 1 is marked with a dot or beveled edge; package meets JEDEC MO-187AA standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Chip Select Input | Active-low enable: drives device into active mode; rising edge after write sequence initiates internal write cycle. |
| SO (Pin 2) | Serial Data Output | Tri-state open-drain output; data valid after SCK falling edge; high-impedance when CS high or HOLD low. |
| WP (Pin 3) | Hardware Write-Protect | Blocks STATUS register writes when WPEN bit = 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 logic; must be low-impedance and decoupled near VCC pin. |
| SI (Pin 5) | Serial Data Input | Latches instruction/address/data on SCK rising edge; requires setup/hold timing compliance per VCC voltage tier. |
| SCK (Pin 6) | Serial Clock Input | Synchronizes all SPI transfers; max 10 MHz at 4.5–5.5V; rise/fall times ≤2 µs required for reliable sampling. |
| HOLD (Pin 7) | Transfer Pause Control | Pulls SO to high-Z and ignores SI/SCK transitions when low (must be asserted while SCK = low); resumes on rising edge while SCK = low. |
| VCC (Pin 8) | Power Supply | 2.5–5.5V operation; bypass capacitor (0.1 µF ceramic) required between VCC and VSS close to the package. |
Key Features
| Feature | Design Value |
|---|---|
| Block Write Protection | Selectively protects 0%, 25%, 50%, or 100% of memory array via BP0/BP1 bits - enables secure storage of factory-calibrated parameters while allowing field-updatable user settings. |
| Power-On Write Protection | Write enable latch resets at power-up and after every write - prevents accidental writes during brown-out or reset sequences without explicit WREN command. |
| HOLD Functionality | Pauses active SPI transfers without losing state - allows host MCU to service time-critical interrupts (e.g., CAN message arrival) and resume EEPROM access seamlessly. |
| Automotive Qualification | Rated for –40°C to +125°C ambient and qualified per AEC-Q100 stress test conditions - suitable for engine control units, ADAS sensors, and body electronics. |
| ESD Robustness | 4 kV HBM ESD rating on all pins - reduces susceptibility to handling damage and board-level transient events in manufacturing and field environments. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Configuration Storage |
|---|---|
|
Use Scenario: Storing trim values, fault codes, and adaptive learning parameters across ignition cycles in gasoline/diesel ECUs. IC Role / Device Role / Timing Role: Nonvolatile configuration memory accessed via SPI during boot and runtime; retains data through 12V battery disconnect. Use Value: Enables zero-power retention of critical calibration data for emissions compliance and drivability - supported by >200-year data retention and automotive temperature range. |
Use Scenario: Holding I/O mapping, PID tuning constants, and user-defined logic states in modular programmable logic controllers. IC Role / Device Role / Timing Role: SPI-configurable persistent memory interfaced to ARM-based PLC main controller; updated during commissioning or maintenance. Use Value: Eliminates need for battery-backed SRAM; withstands industrial thermal cycling (–40°C to +85°C) and vibration without data loss. |
| Medical Infusion Pump Calibration | Smart Energy Meter Firmware Settings |
|
Use Scenario: Securing drug library metadata, dose limits, and operator audit trails in Class II medical infusion devices. IC Role / Device Role / Timing Role: Tamper-resistant configuration store with hardware write-protection (WP pin + WPEN bit) preventing unauthorized parameter modification. Use Value: Meets IEC 62304 safety requirements via block protection of critical calibration zones and >1M endurance for frequent recalibration events. |
Use Scenario: Storing tariff schedules, meter ID, cryptographic keys, and tamper-event logs in ANSI C12.22-compliant smart meters. IC Role / Device Role / Timing Role: Secure, long-life EEPROM accessed over isolated SPI bus; write-protected sections prevent firmware corruption during power faults. Use Value: Achieves 20+ year field life with >200-year data retention and 4 kV ESD robustness against utility grid transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPI EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 25LC080DT-E/MS | 32-byte page size vs. 16-byte; identical voltage, temp, and pinout. | Better suited for larger burst writes; requires firmware update to handle page boundary crossing. | Choose if system performs frequent multi-byte updates and can accommodate revised page management logic. |
| AT25DF041A-MAHN-T | 4 Mbit density, quad-SPI capable, 2.7–3.6V only, SOIC-8 package. | Higher capacity and faster throughput but narrower VCC range and no HOLD/WP pin support. | Select when migrating to higher-density storage with quad-I/O acceleration, and 3.3V-only supply is acceptable. |
Compared with 25LC080DT-E/MS and AT25DF041A-MAHN-T, the 25LC080CT-E/MS offers optimal balance of automotive qualification, hardware write protection, HOLD functionality, and 16-byte page compatibility with legacy PIC® and 8-bit MCU firmware stacks.
Availability
25LC080CT-E/MS is available at Aetrix Electronics and suitable for automotive control units, industrial PLCs, medical infusion pumps, and smart energy meters requiring stable component supply across extended product lifecycles.
Supply support for 25LC080CT-E/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, FPGA, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 25LC080C/D family was designed specifically for cost-sensitive, space-constrained embedded systems requiring reliable, low-power, SPI-accessible nonvolatile memory - especially in automotive, industrial, and medical applications demanding AEC-Q100 or extended temperature compliance.
FAQ
What is the maximum clock frequency supported by the 25LC080CT-E/MS?
The 25LC080CT-E/MS supports up to 10 MHz SPI clock frequency when VCC is 4.5V to 5.5V. At 2.5V to <4.5V, the maximum clock drops to 5 MHz, and at 1.8V to <2.5V (not applicable to this part), it would be 3 MHz. These limits ensure reliable setup/hold timing for SI and SO signals across voltage and temperature ranges.
Does the 25LC080CT-E/MS require external pull-up resistors on SO or other pins?
No, the 25LC080CT-E/MS does not require external pull-ups on SO - it features an internally driven push-pull output. However, CS, WP, and HOLD should be pulled high via 10 kΩ resistors in most designs to ensure defined logic states during power-up or floating conditions, especially in noisy automotive or industrial environments.
How does the HOLD function behave during an active write cycle in the 25LC080CT-E/MS?
The HOLD pin has no effect during an internal write cycle (TWC ≤5 ms) - once CS rises after a write command, the device executes the erase-and-write sequence autonomously. HOLD only pauses active SPI communication (read/write instructions in progress); it cannot interrupt or abort an ongoing internal write.
Can the 25LC080CT-E/MS be used in a 1.8V system?
No, the 25LC080CT-E/MS is specified for 2.5V to 5.5V operation only. For 1.8V systems, Microchip's 25AA080C/D series (e.g., 25AA080CT-I/MS) supports 1.8V–5.5V and shares identical pinout and instruction set, but lacks automotive temperature grade.
What happens to the write enable latch after issuing a WRITE command to the 25LC080CT-E/MS?
After a successful WRITE command completes (CS goes high post-data), the write enable latch is automatically reset - disabling further writes until WREN is reissued. This behavior prevents accidental overwrites and enforces explicit write-enable sequencing, a key safety feature in automotive and medical firmware storage.
25LC080CT-E/MS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- 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-MSOP
25LC080CT-E/MS FAQ
1.How can I place an order for 25LC080CT-E/MS through Aetrix?
Please submit a Request for Quotation (RFQ) for 25LC080CT-E/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 25LC080CT-E/MS reliable?
The price and inventory of 25LC080CT-E/MS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 25LC080CT-E/MS is usually 5 days.
3.What payment methods are accepted for 25LC080CT-E/MS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 25LC080CT-E/MS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 25LC080CT-E/MS?
25LC080CT-E/MS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 25LC080CT-E/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 25LC080CT-E/MS?
For technical support, including 25LC080CT-E/MS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 25LC080CT-E/MS requirements.
6.How does Aetrix verify that 25LC080CT-E/MS is sourced from the original manufacturer or authorized distributors?
All 25LC080CT-E/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 25LC080CT-E/MS meets industry standards.
7.What is the process for return or replacement of 25LC080CT-E/MS?
All 25LC080CT-E/MS units undergo pre-shipment inspection (PSI). If there is an issue with 25LC080CT-E/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 25LC080CT-E/MS part is unused and in its original packaging.
Return procedure for 25LC080CT-E/MS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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