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Microchip Technology 25LC080BT-E/ST
- Part No.:
- 25LC080BT-E/ST
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
25LC080BT-E/ST.pdf
- Description:
- IC EEPROM 8KBIT SPI 10MHZ 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,977
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Product details
Overview
25LC080BT-E/ST from Microchip Technology Inc. is an 8 Kbit SPI Serial EEPROM with 1024 × 8-bit organization, 32-byte page size, 2.5–5.5 V supply range, and industrial/automotive temperature support (−40°C to +125°C). It features hardware write protection via WP pin, HOLD functionality for interrupt-safe bus suspension, and self-timed 5 ms write cycles - deployed in automotive body control modules for configuration storage.
For engineers reviewing the 25LC080BT-E/ST datasheet, 25LC080BT-E/ST pinout, 25LC080BT-E/ST application, or 25LC080BT-E/ST equivalent, key selection criteria include page size compatibility (32-byte), automotive-grade temperature operation, TSSOP-8 package footprint, and SPI timing compliance at up to 10 MHz clock frequency.
Technical Context
The 25LC080BT-E/ST implements a standard SPI Mode 0,0/Master-Slave interface with separate SI/SO lines and dedicated CS, SCK, WP, and HOLD control signals. Its internal architecture includes a status register with WIP, WEL, BP0/BP1, and WPEN bits enabling configurable block protection (none, 1/4, 1/2, or full array) and hardware write-enable gating.
Write operations require explicit WREN instruction followed by CS high transition to initiate self-timed internal erase/write; read operations support sequential addressing with automatic address rollover at 03FFh. HOLD suspends ongoing transfers while preserving internal state, allowing host MCU to service higher-priority interrupts without reinitializing the transaction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 × 8-bit), sufficient for firmware parameter tables or calibration data in compact embedded systems |
| Page Size | 32 bytes - defines maximum contiguous write length per CS assertion; crossing page boundary wraps data within same page |
| Max Clock Frequency | 10 MHz at VCC ≥ 4.5 V - enables fast read/write throughput compatible with modern MCU SPI peripherals |
| Write Cycle Time | 5 ms max - determines minimum interval between write commands; impacts real-time logging latency |
| Endurance | 1,000,000 erase/write cycles - supports frequent field-updatable configurations in automotive ECUs |
| Data Retention | > 200 years at +85°C - ensures long-term reliability of stored calibration or security keys over product lifetime |
| Supply Voltage | 2.5–5.5 V - interoperable with 3.3 V and 5 V logic domains without level-shifting |
Pinout & Package
25LC080BT-E/ST is housed in an 8-lead TSSOP package (4.4 mm body width, 0.65 mm pitch), RoHS-compliant and Pb-free, optimized for high-density PCB layouts in automotive and industrial applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Chip Select Input | Active-low enable signal; must be low for all SPI transactions; rising edge initiates internal write cycle after valid write sequence |
| SO (Pin 2) | Serial Data Output | Tri-state output delivering memory contents on falling edge of SCK during read; high-impedance when deselected or during HOLD |
| WP (Pin 3) | Write-Protect Pin | Hardware lock for Status Register writes when WPEN bit is set; low = protection active; no effect on memory array writes unless configured via BP bits |
| VSS (Pin 4) | Ground Reference | Primary return path for all internal circuitry; requires low-impedance connection to system ground plane |
| SI (Pin 5) | Serial Data Input | Accepts instructions, addresses, and data on rising edge of SCK; latched synchronously to clock for reliable command decoding |
| SCK (Pin 6) | Serial Clock Input | Master-generated clock synchronizing all SPI transfers; timing constraints (e.g., THI/TLO ≥ 50 ns) scale with VCC |
| HOLD (Pin 7) | Hold Input | Pauses ongoing SPI transfer when pulled low during SCK low phase; preserves internal state for MCU interrupt handling without restart overhead |
| VCC (Pin 8) | Supply Voltage | Power input for core logic and EEPROM array; decoupling capacitor required near pin to suppress switching noise during write cycles |
Key Features
| Feature | Design Value |
|---|---|
| Automotive Temperature Range | Rated for −40°C to +125°C operation, meeting AEC-Q100 stress test requirements for under-hood and chassis-mounted ECUs |
| Configurable Block Protection | BP0/BP1 bits allow software-selectable write protection of none, upper 1/4 (0300h–03FFh), upper 1/2 (0200h–03FFh), or entire array (0000h–03FFh) |
| Hardware Write-Enable Gating | WPEN bit enables/disables WP pin function - permits safe installation in systems with grounded WP while retaining Status Register programmability |
| Low-Power Standby Mode | 1 μA max standby current at 2.5 V enables battery-backed operation in always-on vehicle subsystems |
| HOLD Functionality | Enables deterministic pause/resume of SPI transfers without loss of address pointer or command state - critical for time-sensitive interrupt handling |
Applications
| Automotive Body Control Unit | Industrial PLC Configuration Storage |
|---|---|
Use Scenario: Storing door lock actuator calibration offsets and seat position presets across ignition cycles in a vehicle body controller. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed via SPI during boot and runtime updates; HOLD used during CAN interrupt servicing. Use Value: 32-byte page size aligns with typical calibration record length; 1M endurance supports daily recalibration over 10+ year vehicle life. | Use Scenario: Retaining I/O mapping tables and alarm thresholds in a DIN-rail mounted programmable logic controller. IC Role / Device Role / Timing Role: SPI-connected parameter EEPROM interfaced to ARM Cortex-M7 MCU; WP pin hardwired to prevent accidental writes during firmware updates. Use Value: Automotive-grade temp rating ensures reliability in unventilated control cabinets; 5 ms write time allows background parameter saves without disrupting scan cycle timing. |
| Medical Infusion Pump Settings | Smart Energy Meter Firmware Parameters |
Use Scenario: Securing drug delivery rate limits and user-access permissions in Class II medical infusion equipment. IC Role / Device Role / Timing Role: Secure configuration store with hardware write protection (WP + WPEN) preventing unauthorized modification of safety-critical parameters. Use Value: >200-year data retention guarantees integrity of regulatory-mandated settings across device lifetime; ESD rating >4 kV withstands clinical environment handling. | Use Scenario: Holding tariff schedules, metering constants, and communication credentials in ANSI C12.22-compliant smart electricity meters. IC Role / Device Role / Timing Role: SPI EEPROM integrated into metrology SoC subsystem; sequential read mode enables fast retrieval of time-of-use rate tables. Use Value: 10 MHz max clock supports rapid credential loading during AMI network rejoin; TSSOP-8 package fits constrained meter PCB real estate. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 25LC080AT-E/ST | 16-byte page size; 1.8–5.5 V supply; rated only for Industrial (−40°C to +85°C), not Automotive | Lacks extended temperature support; unsuitable for under-hood or chassis-mounted automotive use | Select only for cost-sensitive industrial designs where 16-byte pages suffice and ambient temperature stays ≤85°C |
| AT25080B-SSHL-T | Same 8 Kbit / 32-byte page / TSSOP-8; 1.8–5.5 V supply; Industrial temp only; different status register map and HOLD timing | Requires firmware adaptation for status bit interpretation and HOLD setup/hold times; no automotive qualification | Consider for legacy Atmel-based designs needing drop-in footprint replacement, but validate timing and protection logic in target environment |
Compared with 25LC080BT-E/ST, the 25LC080AT-E/ST lacks automotive temperature rating and uses smaller pages, while AT25080B-SSHL-T requires firmware changes due to divergent status register behavior and offers no AEC-Q100 assurance - making 25LC080BT-E/ST the sole choice for new automotive designs requiring guaranteed −40°C to +125°C operation and hardware write protection.
Availability
25LC080BT-E/ST is available at Aetrix Electronics and suitable for automotive body control units, industrial PLCs, medical infusion pumps, and smart energy meters requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 25LC080BT-E/ST 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 components, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 25LC080B series belongs to Microchip's serial EEPROM product line, engineered specifically for robust, low-power nonvolatile storage in automotive, industrial, and medical applications demanding extended temperature operation and configurable write protection.
FAQ
What is the maximum SPI clock frequency supported by the 25LC080BT-E/ST?
The 25LC080BT-E/ST supports up to 10 MHz SPI clock frequency when VCC is 4.5–5.5 V. At 2.5–4.5 V, the maximum clock drops to 5 MHz, and at 1.8–2.5 V (not applicable to this part), it would be 3 MHz. These limits ensure reliable setup/hold timing for SI/SO transitions and are specified in Table 1-2 of the DS21808D datasheet.
Does the 25LC080BT-E/ST support hardware write protection?
Yes, the 25LC080BT-E/ST supports hardware write protection via the WP pin in conjunction with the WPEN bit in its status register. When WPEN = 1 and WP = low, writes to the nonvolatile status register bits are disabled. Memory array protection is controlled separately by BP0/BP1 bits and remains functional regardless of WP state.
What package type is used for the 25LC080BT-E/ST?
The 25LC080BT-E/ST uses an 8-lead TSSOP package (4.4 mm body width, 0.65 mm lead pitch), designated by the "ST" suffix. This RoHS-compliant, Pb-free package is optimized for automated assembly and high-density PCB layouts in automotive and industrial applications.
How many write/erase cycles does the 25LC080BT-E/ST guarantee?
The 25LC080BT-E/ST guarantees 1,000,000 write/erase cycles per memory location, validated per JEDEC standards. This endurance rating applies across its full operating temperature range (−40°C to +125°C) and supports frequent field updates in automotive and industrial control applications.
Can the 25LC080BT-E/ST be used in systems with 3.3 V logic levels?
Yes, the 25LC080BT-E/ST operates reliably with 3.3 V logic levels: its VCC range is 2.5–5.5 V, VIH1 threshold is 2.0 V minimum (at VCC ≥ 2.7 V), and VOL is ≤0.4 V at 2.1 mA load - fully compatible with standard 3.3 V CMOS I/O without level shifters.
25LC080BT-E/ST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not 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-TSSOP
25LC080BT-E/ST FAQ
1.How can I place an order for 25LC080BT-E/ST through Aetrix?
Please submit a Request for Quotation (RFQ) for 25LC080BT-E/ST 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 25LC080BT-E/ST reliable?
The price and inventory of 25LC080BT-E/ST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 25LC080BT-E/ST is usually 5 days.
3.What payment methods are accepted for 25LC080BT-E/ST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 25LC080BT-E/ST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 25LC080BT-E/ST?
25LC080BT-E/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 25LC080BT-E/ST 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 25LC080BT-E/ST?
For technical support, including 25LC080BT-E/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 25LC080BT-E/ST requirements.
6.How does Aetrix verify that 25LC080BT-E/ST is sourced from the original manufacturer or authorized distributors?
All 25LC080BT-E/ST 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 25LC080BT-E/ST meets industry standards.
7.What is the process for return or replacement of 25LC080BT-E/ST?
All 25LC080BT-E/ST units undergo pre-shipment inspection (PSI). If there is an issue with 25LC080BT-E/ST, 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 25LC080BT-E/ST part is unused and in its original packaging.
Return procedure for 25LC080BT-E/ST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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