My Inquiry
My Account
Microchip Technology 25C080T/SN
- Part No.:
- 25C080T/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
25C080T/SN.pdf
- Description:
- IC EEPROM 8KBIT SPI 3MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,496
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
25C080T/SN from Microchip Technology Inc. is an 8 Kbit SPI Serial EEPROM designed for nonvolatile data storage in embedded control systems. It features 1024 × 8-bit organization, 16-byte page write capability, 3 MHz max clock frequency at 4.5–5.5 V, and automotive-grade temperature operation from −40°C to +125°C. It is used in engine control units, battery management systems, and industrial sensor calibration storage.
For engineers reviewing the 25C080T/SN datasheet, 25C080T/SN pinout, 25C080T/SN application, or 25C080T/SN equivalent, key selection criteria include its 5 V supply range, HOLD/CS/WP pin functionality, 1 M endurance cycles, and SOIC-8 (150 mil) packaging for space-constrained automotive PCBs.
Technical Context
The 25C080T/SN implements a standard SPI Mode 0,0 interface with separate SI (data in), SO (data out), SCK (clock), CS (chip select), WP (hardware write-protect), and HOLD (communication pause) pins. Its internal architecture includes a status register with WIP, WEL, BP1/BP0, and WPEN bits enabling configurable block protection and real-time write-in-progress monitoring.
It supports sequential read, byte/page write, and self-timed internal erase/write cycles with 5 ms maximum write cycle time. The device powers on in standby mode with write enable latch reset, requiring explicit WREN instruction before any memory write - ensuring robust immunity to spurious writes during power transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 8 Kbit (1024 × 8-bit), sufficient for firmware patch storage or configuration tables in ECUs |
| Interface | SPI-compatible serial bus (Mode 0,0), compatible with PIC, AVR, ARM Cortex-M microcontrollers |
| VCC range | 4.5 V to 5.5 V - matches 5 V automotive rail and avoids level-shifting in legacy vehicle electronics |
| Max clock frequency | 3 MHz at VCC = 4.5–5.5 V - enables fast parameter logging without CPU overhead |
| Write endurance | 1 million erase/write cycles - supports daily recalibration over 10+ years of vehicle service life |
| Data retention | >200 years at +25°C - ensures calibration data integrity across full product lifecycle |
| Operating temp | −40°C to +125°C (Automotive E grade) - qualified for under-hood and transmission control module environments |
Pinout & Package
25C080T/SN is supplied in an 8-pin narrow SOIC package (150 mil body width), JEDEC MS-012 compliant, with 1.27 mm pitch and surface-mount footprint optimized for reflow assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Chip Select Input | Active-low enable: pulls device out of standby; 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 active |
| WP (Pin 3) | Write-Protect Pin | Hardware lock: disables Status register writes when WP low and WPEN bit set - prevents accidental firmware corruption |
| VSS (Pin 4) | Ground | Reference return path for all I/O and core logic; must be low-inductance connection in noisy automotive environments |
| SI (Pin 5) | Serial Data Input | Latches data/instructions on SCK rising edge; accepts READ, WRITE, WREN, RDSR, WRSR commands per SPI protocol |
| SCK (Pin 6) | Serial Clock Input | Synchronizes all transfers; timing-critical for setup/hold compliance - max 3 MHz at 5 V |
| HOLD (Pin 7) | Hold Input | Pauses ongoing SPI transfer without resetting state; allows host MCU to service higher-priority interrupts mid-sequence |
| VCC (Pin 8) | Supply Voltage | 4.5–5.5 V DC input; internal voltage regulation enables stable EEPROM operation despite rail ripple |
Key Features
| Feature | Design Value |
|---|---|
| Page write (16 bytes) | Reduces write transaction count by 16× vs. byte writes - critical for logging burst sensor data with minimal MCU intervention |
| Block write protection | Configurable via BP1/BP0 bits to protect 0%, 25%, 50%, or 100% of array - isolates boot code from runtime parameter updates |
| HOLD pin functionality | Enables deterministic SPI pause/resume without command retransmission - essential for real-time OS context switching |
| Power-on write disable | Write enable latch resets at power-up, preventing unintended writes during brown-out or cold-start sequences |
| ESD protection | >4 kV HBM - meets automotive component-level ESD requirements (ISO 10605) without external protection diodes |
Applications
| Engine Control Unit (ECU) | Battery Management System (BMS) |
|---|---|
Use Scenario: Storing adaptive fuel trim values, knock sensor learning offsets, and fault code history across ignition cycles. IC Role / Device Role / Timing Role: Nonvolatile configuration storage with guaranteed write completion under transient 12 V supply dips. Use Value: Enables closed-loop engine optimization without external backup capacitors or complex power-fail detection circuitry. | Use Scenario: Retaining cell voltage calibration coefficients, SOC lookup tables, and thermal derating profiles in EV traction battery packs. IC Role / Device Role / Timing Role: Automotive-grade EEPROM interfacing directly with BMS MCU's SPI peripheral at 3 MHz. Use Value: Supports >1M write cycles required for daily recalibration over 15-year vehicle lifetime while operating at +125°C near battery cells. |
| Industrial PLC I/O Module | Automotive ADAS Camera Calibration |
Use Scenario: Holding analog input scaling factors, digital I/O mapping, and firmware update staging flags in factory-floor controllers. IC Role / Device Role / Timing Role: SPI EEPROM providing tamper-resistant parameter storage with hardware WP pin tied to system security controller. Use Value: Eliminates need for external write-protection logic; BP bits allow independent locking of factory vs. field-configurable memory regions. | Use Scenario: Storing lens distortion coefficients, pixel gain maps, and timestamped calibration logs in surround-view camera modules. IC Role / Device Role / Timing Role: High-reliability serial EEPROM operating in extended temperature range with HOLD support for interrupt-safe firmware updates. Use Value: Ensures vision system calibration persistence through vehicle power cycling and thermal cycling in under-hood mounting locations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPI EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 25AA080T/SN | 1.8–5.5 V supply range; 1 MHz max clock; Industrial temp only (−40°C to +85°C) | Lower voltage flexibility suits portable or mixed-voltage designs; not rated for under-hood automotive use | Select when system operates below 4.5 V or requires wider VCC range; verify timing margins at lower frequencies |
| 25LC080T/SN | 2.5–5.5 V supply; 2 MHz max clock; Industrial temp only | Optimized for 3.3 V systems with moderate speed needs; lacks automotive temperature qualification | Prefer for cost-sensitive industrial controls where 125°C operation is unnecessary and 3.3 V rail is dominant |
Compared with 25AA080T/SN and 25LC080T/SN, the 25C080T/SN uniquely delivers 3 MHz operation at 5 V with full automotive temperature range - making it the only choice among these three for high-speed, under-hood automotive applications requiring guaranteed performance at +125°C.
Availability
25C080T/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 long production lifecycles and automotive qualification continuity.
Supply support for 25C080T/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 microcontroller, mixed-signal, analog, and Flash-IP solutions, serving automotive, industrial, consumer, and communications markets with high-reliability silicon and development tools.
The 25C080T/SN belongs to Microchip's legacy 25XX080 SPI EEPROM family, engineered specifically for automotive and industrial applications demanding robust nonvolatile storage with hardware write protection and extended temperature operation.
FAQ
What is the maximum clock frequency supported by the 25C080T/SN?
The 25C080T/SN supports a maximum clock frequency of 3 MHz when operated within its specified VCC range of 4.5 V to 5.5 V. This timing is validated across the full automotive temperature range (−40°C to +125°C). At lower supply voltages, the maximum clock rate decreases - for example, to 2 MHz at 2.5–4.5 V (25LC080) or 1 MHz at 1.8–2.5 V (25AA080). Always consult the AC characteristics table in the DS21230E datasheet for voltage- and temperature-specific timing limits. The 25C080T/SN achieves this speed using optimized internal charge pump and sense amplifier design.
Does the 25C080T/SN require external pull-up resistors on its SO or SI lines?
No, the 25C080T/SN does not require external pull-up resistors on SO or SI. Its SO pin is internally configured as a tri-state open-drain output, and SI is a CMOS input with no pull-up requirement. However, proper signal integrity in noisy automotive environments demands controlled-impedance routing and local decoupling (0.1 µF ceramic capacitor near VCC pin). The device specifies input leakage current ≤ ±10 µA and output drive strength sufficient for standard SPI bus loading - eliminating need for external biasing in typical MCU-to-EEPROM point-to-point configurations.
How does the HOLD pin function during an active SPI transaction on the 25C080T/SN?
The HOLD pin on the 25C080T/SN suspends an ongoing SPI transaction without resetting internal state. When pulled low while SCK is low, it places SI, SCK, and SO into high-impedance states and ignores further input transitions - allowing the host MCU to service urgent interrupts. Communication resumes from the exact bit position when HOLD is returned high with SCK low. This behavior is electrically verified per DS21230E Figure 1-1 and enables deterministic real-time response in safety-critical automotive software stacks. The 25C080T/SN retains all address and instruction context during hold, eliminating re-synchronization overhead.
What memory protection mechanisms are implemented in the 25C080T/SN?
The 25C080T/SN implements three layered memory protections: (1) hardware write-protection via the WP pin (active-low) combined with the nonvolatile WPEN bit in the status register; (2) software-configurable block protection (BP1/BP0 bits) enabling 0%, 25%, 50%, or 100% array lockdown; and (3) power-on default write-disable - the WEL bit resets at startup, requiring explicit WREN instruction before any write. These features are documented in DS21230E Sections 2.3, 3.6, and 3.7. Together, they prevent accidental or malicious overwrites in mission-critical automotive storage applications.
Is the 25C080T/SN pin-compatible with newer Microchip EEPROMs like the 25AA080A?
No, the 25C080T/SN is not pin-compatible with the 25AA080A or 25AA080B. While both share the same 8-pin SOIC package and identical pinout (CS/SO/WP/VSS/SI/SCK/HOLD/VCC), the 25AA080A/B introduce enhanced features including faster write times, improved ESD rating, and updated status register mapping - but retain mechanical and electrical pin compatibility. However, Microchip explicitly marks the 25C080 series as "Not recommended for new designs" in DS21230E-page 1, advising migration to A/B variants for new projects. Legacy 25C080T/SN designs remain fully functional and supported for existing production.
25C080T/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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
25C080T/SN FAQ
1.How can I place an order for 25C080T/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 25C080T/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/SN reliable?
The price and inventory of 25C080T/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/SN is usually 5 days.
3.What payment methods are accepted for 25C080T/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 25C080T/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 25C080T/SN?
25C080T/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 25C080T/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/SN?
For technical support, including 25C080T/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 25C080T/SN requirements.
6.How does Aetrix verify that 25C080T/SN is sourced from the original manufacturer or authorized distributors?
All 25C080T/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/SN meets industry standards.
7.What is the process for return or replacement of 25C080T/SN?
All 25C080T/SN units undergo pre-shipment inspection (PSI). If there is an issue with 25C080T/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/SN part is unused and in its original packaging.
Return procedure for 25C080T/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
25C080T/SN Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
