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Microchip Technology 25C080-E/SN
- Part No.:
- 25C080-E/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
25C080-E/SN.pdf
- Description:
- IC EEPROM 8KBIT SPI 3MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,767
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Product details
Overview
25C080-E/SN from Microchip Technology Inc. is an 8 Kbit SPI Serial EEPROM with automotive-grade extended temperature operation (−40°C to +125°C), 3 MHz max clock frequency at 4.5–5.5 V, 1024 × 8-bit organization, and 16-byte page write capability. It serves as nonvolatile configuration storage in engine control units, battery management systems, and industrial sensor nodes requiring data retention >200 years and endurance of 1 million write cycles.
For engineers reviewing the 25C080-E/SN datasheet, 25C080-E/SN pinout, 25C080-E/SN application, or 25C080-E/SN equivalent, key selection criteria include its −40°C to +125°C operating range, SOIC-8 narrow (150 mil) package, hardware write protection via WP pin, HOLD functionality for interrupt-safe SPI pauses, and compatibility with standard SPI Mode 0,0 and Mode 1,1 interfaces.
Technical Context
The 25C080-E/SN implements a serial peripheral interface with separate SI (data-in) and SO (data-out) lines, CS-controlled device selection, and SCK-synchronized communication. Its internal architecture includes a status register with WIP, WEL, BP0/BP1, and WPEN bits, enabling configurable block write protection (none/1/4/1/2/all) and hardware-based write disable when WP is low and WPEN is high.
It supports sequential read, byte/page write, and self-timed internal erase/write cycles with 5 ms maximum write cycle time. The HOLD pin suspends ongoing SPI transfers without resetting the sequence, and transitions on SI/SCK/SO are ignored during HOLD while CS remains asserted - critical for real-time system interrupt handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 × 8-bit), sufficient for firmware boot flags, calibration tables, or device identity storage |
| Interface | SPI-compatible serial bus (Mode 0,0 and Mode 1,1), requiring only CS, SCK, SI, SO, WP, and HOLD signals |
| Max Clock Frequency | 3 MHz at VCC = 4.5–5.5 V, enabling ~384 kbps effective throughput for page writes |
| Write Cycle Time | 5 ms maximum internal write time per page, deterministic for timing-critical host firmware |
| Endurance & Retention | 1 million write/erase cycles and >200 years data retention, validated for long-life automotive deployments |
| Operating Temperature | −40°C to +125°C (Automotive E grade), qualified for under-hood and powertrain applications |
| Supply Voltage | 4.5 V to 5.5 V only - incompatible with 3.3 V or 2.5 V systems without level shifting |
Pinout & Package
25C080-E/SN is housed in an 8-lead plastic SOIC (SN) package, 150 mil body width, JEDEC MS-012 compliant, with gull-wing leads and 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Chip Select Input | Active-low enable; deselecting forces SO into high-impedance state for multi-device SPI bus sharing |
| SO (Pin 2) | Serial Data Output | Outputs memory data on falling edge of SCK; tri-stated when CS high or HOLD low |
| WP (Pin 3) | Write-Protect Input | Hardware lock for Status register when WPEN=1; no effect if WPEN=0, enabling flexible board-level protection design |
| VSS (Pin 4) | Ground Reference | Primary return path for all I/O and core logic; must be low-impedance for noise immunity in automotive environments |
| SI (Pin 5) | Serial Data Input | Accepts instructions, addresses, and data on rising edge of SCK; latched synchronously to clock |
| SCK (Pin 6) | Serial Clock Input | Master-generated clock; defines timing for SI sampling and SO output updates per SPI protocol |
| HOLD (Pin 7) | Communication Pause Input | Halts ongoing SPI transfer without reset; requires SCK low before assertion and release to resume correctly |
| VCC (Pin 8) | Power Supply | 4.5–5.5 V only; internal regulation enables stable EEPROM operation across automotive battery transients |
Key Features
| Feature | Design Value |
|---|---|
| Extended Temperature Range | Qualified for −40°C to +125°C operation, meeting AEC-Q100 stress test requirements for automotive electronics |
| Hardware Write Protection | Configurable via WP pin and WPEN bit - allows board-level permanent lockout of critical configuration registers |
| HOLD Functionality | Enables deterministic SPI pause/resume without retransmission, essential for servicing higher-priority MCU interrupts |
| Page Write Capability | 16-byte page buffer reduces host overhead and improves write efficiency versus byte-by-byte programming |
| Low Standby Current | 500 nA typical at VCC = 5.5 V, minimizing quiescent power draw in always-on vehicle modules |
Applications
| Engine Control Unit (ECU) | Industrial PLC I/O Module |
|---|---|
Use Scenario: Storing fuel map calibration data, fault codes, and adaptive learning parameters that must survive ignition cycling and thermal extremes. IC Role / Device Role / Timing Role: Nonvolatile configuration and event logging storage with guaranteed data integrity across −40°C to +125°C ambient. Use Value: Eliminates need for external voltage supervisors or backup capacitors due to built-in power-on write protection and 500 nA standby current. |
Use Scenario: Retaining module identification, channel configuration, and last-known sensor state after power loss in factory automation controllers. IC Role / Device Role / Timing Role: SPI-accessible persistent memory interfaced directly to ARM Cortex-M or PIC microcontroller SPI peripherals. Use Value: HOLD pin support allows seamless interruption of EEPROM writes during PLC scan cycle jitter, preventing data corruption. |
| Battery Management System (BMS) | Automotive ADAS Camera Module |
Use Scenario: Recording cell balancing history, temperature thresholds, and SOC calibration offsets in high-voltage traction battery packs. IC Role / Device Role / Timing Role: Secure, long-retention storage for safety-critical operational parameters with hardware write-lock capability. Use Value: WP pin + WPEN bit combination prevents accidental overwriting of protected safety limits during firmware updates. |
Use Scenario: Storing lens calibration coefficients, image sensor settings, and firmware version metadata in compact rear-view or surround-view camera assemblies. IC Role / Device Role / Timing Role: Compact SOIC-8 EEPROM integrated into space-constrained camera PCBs with minimal routing overhead. Use Value: 150-mil SOIC footprint enables direct replacement of legacy 25LC080-I/SN while supporting harsh under-hood thermal profiles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPI Serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 25AA080T-I/SN | 1.8–5.5 V supply range; −40°C to +85°C industrial temp; lower 1 MHz max clock; same SOIC-8 package | Not qualified for automotive extended temperature; suitable for cost-sensitive consumer or industrial control where wide VCC range is needed | Select when operating below 4.5 V or ambient stays ≤85°C; verify timing margins at reduced clock speed |
| 25LC080T-I/SN | 2.5–5.5 V supply; −40°C to +85°C; 2 MHz max clock; identical pinout and instruction set | Lacks automotive temperature qualification; better suited for 3.3 V embedded systems with moderate thermal demands | Choose for 3.3 V designs requiring higher speed than 25AA080 but not needing 125°C operation |
Compared with 25C080-E/SN, 25AA080T-I/SN offers wider voltage flexibility but sacrifices automotive temperature rating and speed, while 25LC080T-I/SN provides intermediate voltage and speed trade-offs - neither matches the −40°C to +125°C qualification and 3 MHz performance of the 25C080-E/SN in demanding automotive contexts.
Availability
25C080-E/SN is available at Aetrix Electronics and suitable for engine control units, battery management systems, and industrial PLC I/O modules requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 25C080-E/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, with broad automotive and industrial certifications.
The 25C080-E/SN belongs to Microchip's legacy 25XX080 SPI EEPROM family, designed specifically for automotive and high-reliability industrial applications requiring extended temperature operation and robust data retention.
FAQ
What is the operating voltage range for the 25C080-E/SN?
The 25C080-E/SN operates strictly within 4.5 V to 5.5 V. It is not functional below 4.5 V - unlike the 25AA080 or 25LC080 variants - and lacks internal voltage regulation for lower-supply systems. This fixed range ensures stable timing and write reliability in 5 V automotive subsystems, and using it outside this window risks data corruption or failure to respond on the SPI bus.
Does the 25C080-E/SN support SPI Mode 0,0 and Mode 1,1?
Yes, the 25C080-E/SN supports both SPI Mode 0,0 (CPOL = 0, CPHA = 0) and Mode 1,1 (CPOL = 1, CPHA = 1), as confirmed by timing diagrams in DS21230E. Data is sampled on the rising edge of SCK and output on the falling edge, aligning with standard microcontroller SPI peripherals including PIC, STM32, and NXP S32K families - ensuring plug-and-play integration without custom bit-banging.
How does the HOLD function work on the 25C080-E/SN?
The HOLD pin on the 25C080-E/SN pauses an active SPI transaction without resetting the internal address counter or command state. To activate, HOLD must be pulled low while SCK is low; SO, SI, and SCK enter high-impedance states, ignoring further edges. Resuming requires bringing HOLD high while SCK remains low. This behavior is explicitly defined in DS21230E Section 2.6 and Figure 1-1, enabling deterministic interrupt handling in real-time systems.
What write protection options does the 25C080-E/SN provide?
The 25C080-E/SN offers dual-layer write protection: software-configurable block protection (BP0/BP1 bits) for 0%, 25%, 50%, or 100% of the 1024-byte array, and hardware-based lock via the WP pin when WPEN = 1. This allows system designers to permanently protect safety-critical registers at board level while retaining runtime flexibility for user data - a capability verified in DS21230E Tables 3-2 and 3-3.
Is the 25C080-E/SN recommended for new designs?
No - Microchip explicitly states "Not recommended for new designs" in DS21230E-page 1, advising migration to the 25AA080A/B or 25LC080A/B series. These newer variants offer enhanced ESD ratings, improved AC characteristics, and active lifecycle support. However, the 25C080-E/SN remains fully supported for existing automotive and industrial programs requiring backward compatibility and extended temperature validation.
25C080-E/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:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
25C080-E/SN FAQ
1.How can I place an order for 25C080-E/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 25C080-E/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-E/SN reliable?
The price and inventory of 25C080-E/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-E/SN is usually 5 days.
3.What payment methods are accepted for 25C080-E/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 25C080-E/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 25C080-E/SN?
25C080-E/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 25C080-E/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-E/SN?
For technical support, including 25C080-E/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 25C080-E/SN requirements.
6.How does Aetrix verify that 25C080-E/SN is sourced from the original manufacturer or authorized distributors?
All 25C080-E/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-E/SN meets industry standards.
7.What is the process for return or replacement of 25C080-E/SN?
All 25C080-E/SN units undergo pre-shipment inspection (PSI). If there is an issue with 25C080-E/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-E/SN part is unused and in its original packaging.
Return procedure for 25C080-E/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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