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Microchip Technology 25C080T-I/SN
- Part No.:
- 25C080T-I/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
25C080T-I/SN.pdf
- Description:
- IC EEPROM 8KBIT SPI 3MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,300
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Product details
Overview
25C080T-I/SN from Microchip Technology Inc. is an 8 Kbit SPI Serial EEPROM with 1024 × 8-bit organization, 4.5–5.5 V supply range, and automotive-grade temperature operation (−40°C to +125°C). It features 16-byte page write, 5 ms max internal write cycle time, and hardware write protection via WP pin and Status register. Used in engine control units for calibration storage and fault log retention.
For engineers reviewing the 25C080T-I/SN datasheet, 25C080T-I/SN pinout, 25C080T-I/SN application, or 25C080T-I/SN equivalent, key selection criteria include automotive temperature rating, SPI interface compatibility, block write protection granularity, and 1 M endurance cycles.
Technical Context
The 25C080T-I/SN implements a standard SPI Mode 0,0 interface with separate SI and SO lines, CS-controlled selection, and HOLD pin for transaction suspension without reset. It uses an internal high-voltage generator for EEPROM programming and includes a status register with WIP, WEL, BP0/BP1, and WPEN bits.
Its memory array is partitioned into four 256-byte blocks, enabling selective write protection of none, upper 1/4 (0300h–03FFh), upper 1/2 (0200h–03FFh), or all (0000h–03FFh) of the 1024-byte space. Write enable latch must be set via WREN instruction before any WRITE or WRSR command executes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 8 Kbit (1024 × 8-bit), sufficient for firmware patch storage or sensor calibration tables in automotive ECUs |
| Supply voltage | 4.5–5.5 V - compatible with 5 V automotive power rails and tolerant of battery transients |
| Max clock frequency | 3 MHz at VCC = 4.5–5.5 V - enables fast configuration reads during boot-up sequences |
| Write cycle time | 5 ms max - deterministic latency for critical event logging (e.g., airbag deployment flags) |
| Endurance | 1 million write/erase cycles - supports frequent recalibration in adaptive control systems |
| Data retention | >200 years at +125°C - ensures long-term reliability in under-hood applications |
| Temperature range | −40°C to +125°C (Automotive E grade) - qualified for engine compartment and transmission control modules |
Pinout & Package
25C080T-I/SN is packaged in an 8-lead narrow SOIC (150 mil body), JEDEC MS-012 compliant, with gull-wing leads and 1.27 mm pitch. The package is RoHS-compliant and rated for reflow soldering per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select Input | Active-low enable; forces device into Standby mode when high, tri-states SO to allow multi-device SPI bus sharing |
| SO | Serial Data Output | Push-pull output; data shifted out on falling edge of SCK; high-impedance when CS is high or HOLD is asserted |
| WP | Write-Protect Pin | Hardware lock for Status register nonvolatile bits when WPEN = 1; no effect if WPEN = 0, enabling flexible system-level protection schemes |
| VSS | Ground | Reference return path for all digital and analog circuitry; requires low-impedance connection to minimize noise coupling |
| SI | Serial Data Input | Latches instruction, address, and data on rising edge of SCK; accepts MSB-first SPI framing |
| SCK | Serial Clock Input | Synchronizes all serial transfers; rising edge clocks input data, falling edge updates SO output |
| HOLD | Hold Input | Pauses ongoing SPI sequence when pulled low while SCK is low; preserves internal state for interrupt servicing without restart overhead |
| VCC | Supply Voltage | 4.5–5.5 V power rail; internal regulation ensures stable EEPROM programming voltage across operating range |
Key Features
| Feature | Design Value |
|---|---|
| Block write protection | Selectable protection of none, upper 1/4, upper 1/2, or full memory array - enables secure storage of bootloader code while allowing runtime parameter updates |
| Power-on write disable | Write enable latch resets at power-up - prevents accidental writes during brown-out or cold-start conditions |
| HOLD pin functionality | Enables interruption of multi-byte SPI transfers without losing context - critical for real-time OS task preemption in safety-critical ECUs |
| 16-byte page write | Allows burst programming of up to 16 contiguous bytes per write cycle - reduces total programming time versus byte-write for calibration table updates |
| ESD protection | >4000 V HBM - meets automotive component robustness requirements for handling and assembly environments |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance System (ADAS) Camera Module |
|---|---|
Use Scenario: Storing adaptive fuel trim values, misfire counters, and diagnostic trouble codes (DTCs) that persist across ignition cycles. IC Role / Device Role / Timing Role: Nonvolatile configuration and event logging memory interfaced via SPI to MCU during initialization and periodic background tasks. Use Value: Automotive temperature rating (−40°C to +125°C) and 1 M endurance ensure reliable operation over 15+ year vehicle lifetime with frequent DTC writes. | Use Scenario: Holding lens calibration coefficients and image processing parameters updated during factory setup or field service. IC Role / Device Role / Timing Role: SPI-configurable persistent memory accessed during camera boot and firmware update verification. Use Value: Hardware write protection (BP0/BP1 + WP pin) prevents corruption of calibrated parameters during software updates or power glitches. |
| Transmission Control Module (TCM) | Electric Power Steering (EPS) Controller |
Use Scenario: Recording gear shift learning profiles and clutch wear metrics used by adaptive shift logic. IC Role / Device Role / Timing Role: Low-latency SPI EEPROM providing deterministic 5 ms write completion for time-critical adaptation data. Use Value: 3 MHz max clock frequency and page write capability reduce bus occupancy during high-priority control loops. | Use Scenario: Storing torque sensor offset compensation and motor phase alignment data after EPS motor replacement. IC Role / Device Role / Timing Role: Secure, tamper-resistant memory accessed only during authorized service mode via authenticated SPI commands. Use Value: WPEN bit + WP pin combination allows permanent locking of safety-critical parameters post-calibration, meeting ISO 26262 ASIL-B requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPI EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 25AA080T-I/SN | 1.8–5.5 V supply range; 1 MHz max clock; industrial temp only (−40°C to +85°C); lower VCC min enables battery-backed operation | Not qualified for under-hood automotive use; suitable for infotainment or body control modules with wider voltage tolerance | Select when system operates below 4.5 V or does not require extended temperature qualification |
| 25LC080T-I/SN | 2.5–5.5 V supply; 2 MHz max clock; industrial temp only; higher endurance margin at 2.5 V operation | Lacks automotive temperature rating; optimized for 3.3 V embedded systems with moderate speed needs | Choose for cost-sensitive industrial controllers where 125°C operation is unnecessary |
Compared with 25AA080T-I/SN and 25LC080T-I/SN, the 25C080T-I/SN uniquely delivers automotive-grade thermal performance (−40°C to +125°C) with 3 MHz SPI speed and 4.5–5.5 V operation-making it the only option qualified for direct integration into powertrain and chassis control modules.
Availability
25C080T-I/SN is available at Aetrix Electronics and suitable for engine control units, ADAS camera modules, and electric power steering systems requiring stable component supply across extended product lifecycles.
Supply support for 25C080T-I/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, serving automotive, industrial, and consumer markets with vertically integrated silicon and development tools.
The 25C080T-I/SN belongs to Microchip's legacy 25XX080 SPI EEPROM family, designed specifically for automotive applications requiring high-reliability nonvolatile storage with hardware write protection and extended temperature operation.
FAQ
What is the maximum clock frequency supported by the 25C080T-I/SN?
The 25C080T-I/SN supports a maximum SPI clock frequency of 3 MHz when operated within its specified VCC range of 4.5–5.5 V. This timing is validated across the full −40°C to +125°C automotive temperature range and enables fast read access during ECU boot sequences. Lower frequencies apply at reduced supply voltages, but those are not relevant for this part since its minimum VCC is 4.5 V.
Does the 25C080T-I/SN support page write operations?
Yes, the 25C080T-I/SN supports 16-byte page write operations, allowing up to 16 contiguous bytes to be loaded into the page latches before initiating an internal write cycle. This reduces total programming time compared to byte-wise writes and is especially useful for updating calibration tables. The page boundary is aligned to addresses ending in 0000b (e.g., 0000h–000Fh), and crossing a page boundary during write will cause wraparound within the same page.
How does hardware write protection work on the 25C080T-I/SN?
Hardware write protection on the 25C080T-I/SN requires both the WP pin to be held low and the WPEN bit in the Status register to be set high. When both conditions are met, writes to nonvolatile bits in the Status register are disabled. If WPEN = 0, the WP pin has no effect-enabling flexible system design where WP may be grounded yet Status register updates remain possible until WPEN is set.
What is the endurance and data retention specification for the 25C080T-I/SN?
The 25C080T-I/SN is specified for 1 million write/erase cycles and greater than 200 years of data retention at +125°C. These figures are ensured by characterization-not 100% tested-but represent guaranteed minimums per Microchip's Total Endurance™ model. The 200-year retention at maximum operating temperature confirms suitability for automotive applications with 15+ year service life expectations.
Is the 25C080T-I/SN pin-compatible with other members of the 25XX080 family?
Yes, the 25C080T-I/SN shares identical 8-pin SOIC (SN) package dimensions, pinout, and SPI interface protocol with 25AA080T-I/SN and 25LC080T-I/SN. However, electrical differences-including VCC range, max clock frequency, and temperature grade-mean that direct substitution requires validation of system-level voltage, timing, and environmental requirements. The 25C080T-I/SN is the only variant qualified for automotive extended temperature operation.
25C080T-I/SN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 3 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
25C080T-I/SN FAQ
1.How can I place an order for 25C080T-I/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 25C080T-I/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 25C080T-I/SN reliable?
The price and inventory of 25C080T-I/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 25C080T-I/SN is usually 5 days.
3.What payment methods are accepted for 25C080T-I/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 25C080T-I/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 25C080T-I/SN?
25C080T-I/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 25C080T-I/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 25C080T-I/SN?
For technical support, including 25C080T-I/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 25C080T-I/SN requirements.
6.How does Aetrix verify that 25C080T-I/SN is sourced from the original manufacturer or authorized distributors?
All 25C080T-I/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 25C080T-I/SN meets industry standards.
7.What is the process for return or replacement of 25C080T-I/SN?
All 25C080T-I/SN units undergo pre-shipment inspection (PSI). If there is an issue with 25C080T-I/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 25C080T-I/SN part is unused and in its original packaging.
Return procedure for 25C080T-I/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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