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Microchip Technology 25LC080CT-E/SN
- Part No.:
- 25LC080CT-E/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
25LC080CT-E/SN.pdf
- Description:
- IC EEPROM 8KBIT SPI 10MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,150
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Product details
Overview
25LC080CT-E/SN 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 features hardware write protection via WP pin and STATUS register control. It is used for nonvolatile parameter storage in automotive body controllers and industrial sensor modules.
For engineers reviewing the 25LC080CT-E/SN datasheet, 25LC080CT-E/SN pinout, 25LC080CT-E/SN application, or 25LC080CT-E/SN equivalent, key selection criteria include VCC range compatibility, page-write boundary handling, HOLD/CS timing margins at 125°C, and WPEN-enabled hardware lock behavior under brownout conditions.
Technical Context
The 25LC080CT-E/SN implements a standard SPI Mode 0,0 interface with separate SI/SO lines and active-low CS, supporting byte and page write operations within fixed 16-byte physical pages. Its internal architecture includes a write-enable latch, STATUS register with WIP/WEL/BP0/BP1 bits, and high-voltage generator for EEPROM cell programming.
It uses CMOS process technology optimized for low-power operation: standby current is ≤1 µA at +85°C and ≤5 µA at +125°C, while read/write currents remain stable across 2.5–5.5V supply and full temperature range. The HOLD pin enables deterministic pause/resume of ongoing SPI transfers without sequence restart.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 × 8-bit), directly addressable via 16-bit SPI command frame |
| Interface | SPI Mode 0,0 (CPOL = 0, CPHA = 0); requires CS, SCK, SI, SO, WP, HOLD, VCC, VSS |
| Max Clock Frequency | 10 MHz at VCC ≥ 4.5V; reduced to 5 MHz at 2.5V ≤ VCC < 4.5V - constrains max data throughput |
| Page Size | 16 bytes - page writes must not cross 0x00, 0x10, 0x20… boundaries or data wraps within page |
| Write Cycle Time | ≤5 ms per internal write - blocks all memory access until WIP bit clears |
| Endurance & Retention | >1 million erase/write cycles; >200 years data retention at +25°C - validated for automotive ECU calibration storage |
| Temp Range | –40°C to +125°C (Automotive E grade) - qualified per AEC-Q100 Class 2 requirements |
Pinout & Package
25LC080CT-E/SN is packaged in 8-lead SOIC (SN) with 150-mil width, RoHS-compliant matte tin finish, and JEDEC MS-012AC footprint. Pin 1 is marked by notch or beveled corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CS | Chip Select Input | Active-low enable; rising edge after valid write initiates internal write cycle; forces SO to high-Z when deasserted |
| 2 - SO | Serial Data Output | Tri-state open-drain output; data valid after falling SCK edge; high-Z during HOLD or CS high |
| 3 - WP | Write-Protect Input | Hardware lock control: active-low only when WPEN=1 in STATUS register; no effect if WPEN=0 |
| 4 - VSS | Ground Reference | Primary return path for all I/O and core logic; must be low-impedance connection to system GND plane |
| 5 - SI | Serial Data Input | Latches instruction/address/data on rising SCK edge; sampled first on CS falling edge |
| 6 - SCK | Serial Clock Input | Synchronizes all SPI transfers; rise/fall times ≤2 µs required for 10 MHz operation |
| 7 - HOLD | Transfer Pause Input | Active-low suspend: must be asserted while SCK is low; tri-states SI/SO/SCK during hold |
| 8 - VCC | Supply Voltage | 2.5–5.5V operating range; bypass capacitor (0.1 µF ceramic) required within 10 mm of pin |
Key Features
| Feature | Design Value |
|---|---|
| Block Write Protection | Selective locking of 0%, 25%, 50%, or 100% of memory array via BP0/BP1 bits - prevents firmware corruption during field updates |
| Power-On Write Disable | WEL bit resets at power-up; requires explicit WREN before any write - eliminates accidental writes during power ramp |
| Hold Function | Deterministic SPI transfer suspension without reinitialization - enables servicing of higher-priority MCU interrupts mid-sequence |
| High-Reliability EEPROM | 1M endurance and 200-year retention qualified over full –40°C to +125°C range - suitable for automotive safety-critical configuration storage |
| Pb-Free & RoHS | Matte tin lead finish; compliant with JEDEC J-STD-609A Class 2 moisture sensitivity (MSL3) - supports lead-free reflow |
Applications
| Automotive Body Control Module | Industrial PLC Configuration Storage |
|---|---|
|
Use Scenario: Storing seat position presets, mirror angles, and lighting profiles in vehicle door modules. IC Role / Device Role / Timing Role: Nonvolatile parameter store interfaced to PIC MCU via SPI; accessed during power-on initialization and user adjustment events. Use Value: 125°C rating ensures reliability in door latch assemblies near power windows; WP pin prevents overwrite during CAN bus firmware updates. |
Use Scenario: Holding I/O mapping tables, calibration coefficients, and alarm thresholds in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: SPI-configurable memory mapped into MCU's peripheral address space; updated via HMI or Modbus RTU commands. Use Value: 16-byte page writes minimize update latency for small configuration changes; HOLD pin allows real-time interrupt response without losing EEPROM state. |
| Medical Infusion Pump Settings | Smart Energy Meter Firmware Parameters |
|
Use Scenario: Retaining drug library IDs, dose limits, and audit logs across power cycles in battery-backed infusion systems. IC Role / Device Role / Timing Role: Secure configuration vault accessed only by trusted bootloader; write-protected via BP1/BP0 and WP pin during normal operation. Use Value: >200-year data retention meets FDA 510(k) long-term reliability requirements; ESD rating >4 kV protects against ESD events in clinical environments. |
Use Scenario: Storing tariff schedules, metering constants, and security keys in ANSI C12.22-compliant smart meters. IC Role / Device Role / Timing Role: Tamper-resistant storage element isolated behind hardware write-protection; accessed during firmware upgrade verification. Use Value: Hardware WP + WPEN bit enables dual-layer protection: physical pin lock + software-configurable block lock - satisfies ANSI C12.22 security annexes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 25LC080D-I/SN | Same 8 Kbit capacity and SOIC-8 package, but rated for Industrial (–40°C to +85°C) only; 32-byte page size vs. 16-byte | Not qualified for automotive under-hood use; larger page size reduces write overhead but increases risk of partial-page corruption on interruption | Select only for cost-sensitive industrial designs where extended temperature is unnecessary and page-boundary management is robustly implemented |
| AT25DF041A-SHN-T | 4 Mbit density, 32-byte page, quad SPI support; wider VCC range (2.3–3.6V); no HOLD pin | Higher density for firmware storage; lacks HOLD functionality - unsuitable for interrupt-driven real-time systems requiring SPI pause | Choose when migrating to larger code storage with quad I/O bandwidth; avoid where deterministic SPI suspension is required |
Compared with 25LC080D-I/SN and AT25DF041A-SHN-T, the 25LC080CT-E/SN uniquely combines automotive-grade temperature qualification, 16-byte page granularity for fine-grained updates, and HOLD pin support - making it optimal for safety-critical, interrupt-sensitive embedded systems.
Availability
25LC080CT-E/SN is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, and medical device configuration storage requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 25LC080CT-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 leading provider of microcontroller, mixed-signal, analog, and Flash-IP solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 25LC080CT-E/SN belongs to Microchip's 25XX080C/D family of SPI EEPROMs, designed specifically for reliable, low-power nonvolatile data storage in automotive, industrial, and medical systems demanding extended temperature operation and hardware-level write protection.
FAQ
What is the maximum clock frequency supported by the 25LC080CT-E/SN?
The 25LC080CT-E/SN supports up to 10 MHz clock frequency when VCC is 4.5V to 5.5V. At 2.5V ≤ VCC < 4.5V, the maximum clock drops to 5 MHz. These limits are specified in Table 1-2 of DS22151B and must be respected to ensure setup/hold timing compliance across the full –40°C to +125°C range. Exceeding them risks read/write corruption.
Does the 25LC080CT-E/SN support page write operations, and what is its page size?
Yes, the 25LC080CT-E/SN supports page write operations with a fixed 16-byte page size. Physical page boundaries align to addresses 0x00, 0x10, 0x20, etc. Attempting to write across a boundary causes wraparound within the same page - a behavior explicitly documented in Section 2.3 of DS22151B. This differs from 'D'-suffix variants which use 32-byte pages.
How does hardware write protection work on the 25LC080CT-E/SN?
Hardware write protection on the 25LC080CT-E/SN requires both the WP pin to be driven low AND the WPEN bit (STATUS register bit 7) to be set high. If WPEN = 0, the WP pin has no effect - enabling safe board-level grounding of WP in systems where STATUS register writes must remain possible. This dual-condition lock is defined in Table 2-4 and Figure 2-7 of DS22151B.
What is the purpose of the HOLD pin on the 25LC080CT-E/SN?
The HOLD pin on the 25LC080CT-E/SN suspends ongoing SPI communication without resetting the internal state. When pulled low while SCK is low, it tri-states SI, SO, and SCK, allowing the host MCU to service higher-priority interrupts. Resuming requires bringing HOLD high while SCK remains low - a deterministic pause/resume mechanism critical for real-time systems using the 25LC080CT-E/SN.
Is the 25LC080CT-E/SN qualified for automotive applications?
Yes, the 25LC080CT-E/SN carries the 'E' temperature grade suffix, certifying operation from –40°C to +125°C and compliance with AEC-Q100 stress testing requirements for automotive electronics. Its packaging (SOIC-8 SN) and electrical specifications - including 5 µA standby current at +125°C and 4 kV ESD protection - are validated for under-hood and body-control module deployment.
25LC080CT-E/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:
- 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-SOIC
25LC080CT-E/SN FAQ
1.How can I place an order for 25LC080CT-E/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 25LC080CT-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 25LC080CT-E/SN reliable?
The price and inventory of 25LC080CT-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 25LC080CT-E/SN is usually 5 days.
3.What payment methods are accepted for 25LC080CT-E/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 25LC080CT-E/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 25LC080CT-E/SN?
25LC080CT-E/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 25LC080CT-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 25LC080CT-E/SN?
For technical support, including 25LC080CT-E/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 25LC080CT-E/SN requirements.
6.How does Aetrix verify that 25LC080CT-E/SN is sourced from the original manufacturer or authorized distributors?
All 25LC080CT-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 25LC080CT-E/SN meets industry standards.
7.What is the process for return or replacement of 25LC080CT-E/SN?
All 25LC080CT-E/SN units undergo pre-shipment inspection (PSI). If there is an issue with 25LC080CT-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 25LC080CT-E/SN part is unused and in its original packaging.
Return procedure for 25LC080CT-E/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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