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Microchip Technology 25C080/SN
- Part No.:
- 25C080/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
25C080/SN.pdf
- Description:
- IC EEPROM 8KBIT SPI 3MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,347
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Product details
Overview
25C080/SN from Microchip Technology Inc. is an 8 Kbit SPI Serial EEPROM with 1024 × 8-bit organization, 16-byte page write capability, and automotive-grade temperature support (−40°C to +125°C). It operates at 4.5–5.5 V supply and supports up to 3 MHz clock frequency, enabling fast configuration storage in engine control units and ADAS modules.
For engineers reviewing the 25C080/SN datasheet, 25C080/SN pinout, 25C080/SN application, or 25C080/SN equivalent, key selection criteria include its automotive temperature rating, hardware write-protection via WP pin, HOLD functionality for interrupt-safe SPI pauses, and 1 M-cycle endurance for infotainment firmware logging.
Technical Context
The 25C080/SN implements a standard SPI Mode 0,0 interface with separate SI (data-in) and SO (data-out) lines, requiring CS, SCK, and HOLD for full protocol compliance. Its internal architecture includes a status register with WIP, WEL, BP0/BP1, and WPEN bits, enabling configurable block protection and real-time write-status polling during active programming cycles.
It uses self-timed erase-and-write cycles with no external timing components required; write completion is signaled by WIP bit clearing in the status register. The device supports sequential read across address boundaries with automatic rollover from 03FFh to 0000h, and enforces page-boundary alignment for multi-byte writes - all verified under automotive ambient conditions (−40°C to +125°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 8 Kbit (1024 × 8-bit), sufficient for bootloader parameters or calibration data in ECUs |
| Supply voltage | 4.5–5.5 V - compatible with 5 V automotive power rails without level-shifting |
| Max clock frequency | 3 MHz at VCC = 4.5–5.5 V - enables ~384 KB/s effective serial throughput |
| Write cycle time | 5 ms max per internal write - deterministic timing for safety-critical firmware updates |
| Endurance | 1 million write/erase cycles - validated for long-term use in telematics log storage |
| Data retention | >200 years at +125°C - meets AEC-Q100 Grade 1 reliability requirements |
| ESD protection | >4 kV HBM - robust against assembly and field handling discharge events |
Pinout & Package
25C080/SN is housed in an 8-lead narrow SOIC (150 mil) package per JEDEC MS-012, with gull-wing leads and 1.27 mm pitch. Dimensions: 4.90 mm × 3.91 mm × 1.55 mm (L × W × A), standoff height 0.132 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Chip Select Input | Active-low enable; forces SO into high-impedance when deasserted, allowing multi-device SPI bus sharing |
| SO (Pin 2) | Serial Data Output | Tri-stated when CS high or HOLD low; outputs data on falling edge of SCK |
| WP (Pin 3) | Hardware Write-Protect | Blocks nonvolatile Status register writes when WPEN=1 and WP=low - critical for preventing accidental firmware corruption |
| VSS (Pin 4) | Ground Reference | Return path for all I/O and core logic; must be low-impedance connection in automotive PCB layout |
| SI (Pin 5) | Serial Data Input | Latches instruction/address/data on rising edge of SCK; supports MSB-first SPI framing |
| SCK (Pin 6) | Serial Clock Input | Synchronizes all SPI transactions; requires clean edge monotonicity per AC specs (TR/TF ≤ 2 µs) |
| HOLD (Pin 7) | Transaction Pause Control | Halts ongoing SPI sequence without reset; allows host MCU to service higher-priority interrupts then resume mid-transfer |
| VCC (Pin 8) | Power Supply | 4.5–5.5 V operation only; decoupling capacitor (0.1 µF ceramic) required within 5 mm of pin |
Key Features
| Feature | Design Value |
|---|---|
| Automotive temperature range | Rated for −40°C to +125°C operation - qualified per AEC-Q100 stress test conditions |
| Configurable block protection | BP0/BP1 bits allow selective write-protection of 0%, 25%, 50%, or 100% of memory array - prevents overwrite of critical calibration sectors |
| HOLD pin functionality | Enables atomic pause/resume of SPI transfers - eliminates need for retransmission after interrupt servicing in real-time systems |
| Self-timed write cycles | No external wait-state logic required; WIP bit provides software-pollable completion signal - simplifies driver implementation |
| Power-on data protection | Write enable latch resets at power-up and after each write - prevents inadvertent writes during brown-out or reset sequences |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
Use Scenario: Storing adaptive fuel trim tables and misfire counters that update dynamically during vehicle operation. IC Role / Device Role / Timing Role: Nonvolatile configuration storage with deterministic 5 ms write latency and 1 M-cycle endurance. Use Value: Enables closed-loop learning without external FRAM or backup battery, reducing BOM cost and board space. | Use Scenario: Logging radar sensor calibration offsets and camera lens distortion coefficients across vehicle lifetime. IC Role / Device Role / Timing Role: Automotive-grade EEPROM providing >200-year data retention at 125°C junction temperature. Use Value: Eliminates need for periodic recalibration by preserving factory-set parameters through thermal cycling and aging. |
| Infotainment Head Unit | Telematics Control Unit (TCU) |
Use Scenario: Persisting user preferences (volume, display brightness, language) across ignition cycles. IC Role / Device Role / Timing Role: SPI EEPROM interfacing directly with ARM Cortex-A53 application processor via GPIO-controlled CS. Use Value: Low 500 nA standby current extends battery backup runtime during vehicle sleep mode (CAN/LIN bus off). | Use Scenario: Recording cellular module firmware version, SIM lock state, and OTA update metadata for remote diagnostics. IC Role / Device Role / Timing Role: Secure, tamper-resistant storage with hardware WP pin tied to system security controller. Use Value: Prevents unauthorized firmware rollback or credential erasure during over-the-air updates. |
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) | Not rated for automotive under-hood environments; suitable for cabin electronics only | Select when wider voltage tolerance and lower power consumption are prioritized over temperature grade |
| 25LC080T-I/SN | 2.5–5.5 V supply; 2 MHz max clock; industrial temp only; same pinout and instruction set | Lacks extended temperature qualification; lower ESD rating (not specified for automotive) | Choose for cost-sensitive industrial control applications where 125°C operation is unnecessary |
Compared with 25C080/SN, the 25AA080T-I/SN offers broader voltage flexibility but sacrifices automotive qualification, while the 25LC080T-I/SN trades clock speed and temperature grade for reduced supply voltage minimum - making 25C080/SN the sole choice for AEC-Q100-compliant designs requiring 3 MHz throughput at 125°C.
Availability
25C080/SN is available at Aetrix Electronics and suitable for engine control units, ADAS modules, infotainment head units, and telematics control units requiring stable component supply across automotive production lifecycles.
Supply support for 25C080/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 U.S.-based semiconductor company specializing in microcontrollers, analog devices, and memory products for embedded and automotive markets.
The 25C080/SN belongs to Microchip's legacy SPI EEPROM product line, designed specifically for automotive applications demanding extended temperature operation, hardware write protection, and SPI protocol compatibility with legacy MCUs.
FAQ
What is the maximum clock frequency supported by the 25C080/SN?
The 25C080/SN supports a maximum clock frequency of 3 MHz when operated within its specified VCC range of 4.5–5.5 V. This value is explicitly defined in the Device Selection Table and confirmed in Section 1.2 AC Characteristics under Param. No. 1 (FCLK). Operation above this frequency may result in unreliable communication or data corruption, especially under worst-case automotive temperature conditions.
Does the 25C080/SN support hardware write protection?
Yes, the 25C080/SN supports hardware write protection via the WP pin in conjunction with the WPEN bit in the Status register. When WPEN = 1 and WP = low, writes to nonvolatile bits in the Status register are disabled. All other operations remain functional. This feature is documented in Section 2.3 and Table 3-3 of the datasheet, and is critical for preventing accidental firmware corruption in automotive systems.
What is the endurance rating of the 25C080/SN?
The 25C080/SN has an endurance rating of 1 million write/erase cycles, as specified in AC Characteristic Param. No. 21 and confirmed in the Features section. This value is not tested per unit but ensured by characterization and applies across the full automotive temperature range (−40°C to +125°C), making it suitable for applications requiring frequent parameter updates such as ECU adaptation learning.
Can the 25C080/SN be used in place of the 25AA080 or 25LC080?
No - the 25C080/SN is not a drop-in replacement for 25AA080 or 25LC080 due to differences in supply voltage range (4.5–5.5 V only), maximum clock frequency (3 MHz vs. 1/2 MHz), and temperature grade (automotive E-grade). While pinout and instruction set are identical, substituting without verifying voltage margins and timing compliance risks functional failure in systems designed for lower-voltage variants.
What package type does the 25C080/SN use?
The 25C080/SN uses an 8-lead plastic small outline integrated circuit (SOIC) package with 150 mil body width, per JEDEC MS-012. This is explicitly stated in the Product Identification System section (DS21230E-page 19) and confirmed in the Packaging Information chapter (DS21230E-page 15), where mechanical dimensions and footprint tolerances are fully specified for PCB layout.
25C080/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:
- 3 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
25C080/SN FAQ
1.How can I place an order for 25C080/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 25C080/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 25C080/SN reliable?
The price and inventory of 25C080/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 25C080/SN is usually 5 days.
3.What payment methods are accepted for 25C080/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 25C080/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 25C080/SN?
25C080/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 25C080/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 25C080/SN?
For technical support, including 25C080/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 25C080/SN requirements.
6.How does Aetrix verify that 25C080/SN is sourced from the original manufacturer or authorized distributors?
All 25C080/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 25C080/SN meets industry standards.
7.What is the process for return or replacement of 25C080/SN?
All 25C080/SN units undergo pre-shipment inspection (PSI). If there is an issue with 25C080/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 25C080/SN part is unused and in its original packaging.
Return procedure for 25C080/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
25C080/SN Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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24LC01BT-I/OT
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M24C02-FMC6TG
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AT24CS02-SSHM-T
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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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