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Microchip Technology 25LC080DT-I/SN
- Part No.:
- 25LC080DT-I/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
25LC080DT-I/SN.pdf
- Description:
- IC EEPROM 8KBIT SPI 10MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,217
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Product details
Overview
25LC080DT-I/SN from Microchip Technology is an 8 Kbit SPI Serial EEPROM with 1024 × 8-bit organization, 32-byte page size, and industrial temperature range (−40°C to +85°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 configuration storage in microcontroller-based embedded systems requiring reliable, low-power data retention.
For engineers reviewing the 25LC080DT-I/SN datasheet, 25LC080DT-I/SN pinout, 25LC080DT-I/SN application, or 25LC080DT-I/SN equivalent, key selection criteria include SPI interface timing compliance at 10 MHz, 32-byte page write capability, −40°C to +85°C operation, SOIC-8 packaging, and hardware/software write protection granularity (1/4, 1/2, or full array).
Technical Context
The 25LC080DT-I/SN implements a standard SPI Mode 0,0 (CPOL = 0, CPHA = 0) interface with separate SI (data in) and SO (data out) lines, CS-controlled selection, and HOLD pin for transaction suspension. Its internal architecture includes a 1024-byte EEPROM array, page latches, HV generator for write/erase, and a status register with WIP, WEL, BP0/BP1, and WPEN bits.
Write operations require explicit WREN instruction before WRITE or WRSR commands; CS high after final data bit initiates self-timed internal write cycle (≤5 ms). Block protection is configurable via BP0/BP1 bits to protect none, upper 1/4 (0300h–03FFh), upper 1/2 (0200h–03FFh), or full array (0000h–03FFh), with hardware write protection enabled only when WP = low and WPEN = 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 × 8-bit), sufficient for firmware configuration, calibration data, or device identity storage in resource-constrained systems. |
| Interface | SPI-compatible serial bus (Mode 0,0), enabling direct connection to PIC® and other MCU SPI peripherals without protocol translation. |
| Max Clock Frequency | 10 MHz at VCC ≥ 4.5V, allowing high-speed read/write bursts while maintaining timing margins per AC specs (e.g., TCSS = 50 ns min). |
| Page Size | 32 bytes, permitting efficient bulk writes within single-page boundaries - critical for minimizing write cycles in logging or parameter update routines. |
| Write Cycle Time | ≤5 ms max internal write time, enabling deterministic firmware wait-state handling without polling overhead beyond WIP flag checks. |
| Endurance & Retention | >1 million erase/write cycles and >200 years data retention, supporting long-life industrial deployments with frequent reconfiguration. |
| Supply Voltage | 2.5V to 5.5V operation, compatible with both 3.3V and 5V logic domains and tolerant of brown-out conditions down to 2.5V. |
Pinout & Package
25LC080DT-I/SN is housed in an 8-lead SOIC package (SN suffix), 3.9 mm × 4.9 mm body, 1.27 mm pitch, RoHS-compliant matte tin lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Chip Select Input | Active-low enable: drives device into active mode; rising edge after valid write sequence triggers internal write cycle; high-Z SO when deasserted enables multi-device SPI bus sharing. |
| SO (Pin 2) | Serial Data Output | Tri-state output: data shifted out MSB-first on falling SCK edge during READ; high-impedance when CS high or HOLD low. |
| WP (Pin 3) | Hardware Write-Protect Input | Enables physical lock of STATUS register nonvolatile bits when WPEN = 1; no effect on memory writes unless combined with BP bits; grounded in production for tamper-resistant config storage. |
| VSS (Pin 4) | Ground Reference | Primary return path for all I/O and core circuitry; must be low-impedance and decoupled near VCC pin to suppress SPI noise and ensure timing integrity. |
| SI (Pin 5) | Serial Data Input | Input-only data line: instructions, addresses, and write data latched on rising SCK edge; requires clean signal integrity to avoid spurious command execution. |
| SCK (Pin 6) | Serial Clock Input | Master-generated clock: defines timing for SI sampling (rising edge) and SO updates (falling edge); max 10 MHz rate constrains PCB trace length and termination design. |
| HOLD (Pin 7) | Transaction Pause Control | Active-low suspend: halts ongoing SPI transfer without reset; allows host MCU to service higher-priority interrupts; must be asserted only when SCK is low to avoid metastability. |
| VCC (Pin 8) | Power Supply | Core voltage rail: powers EEPROM array, logic, and HV generator; requires local 0.1 µF ceramic decoupling to maintain stable operation during write pulses. |
Key Features
| Feature | Design Value |
|---|---|
| Self-timed write cycle | Eliminates need for external write timing control - firmware waits only for WIP flag clear (≤5 ms), simplifying driver implementation and reducing CPU overhead. |
| Configurable block protection | BP0/BP1 bits allow selective 1/4, 1/2, or full-array write lock, enabling secure storage of factory-calibrated values while permitting runtime updates to user parameters. |
| Hardware + software write protection | WP pin + WPEN bit provides dual-layer security: physical grounding prevents accidental STATUS register corruption, while software control enables field-upgradable protection schemes. |
| Hold function with zero-restart latency | HOLD pin suspends SPI transfer mid-sequence and resumes exactly where paused - essential for real-time systems needing deterministic interrupt response without data retransmission. |
| Low-power standby current | 1 µA at +85°C (Iccs), enabling battery-backed applications like smart meters or IoT sensors to retain configuration for years without significant drain. |
Applications
| Industrial Sensor Calibration | Medical Device Configuration |
|---|---|
Use Scenario: Storing factory-trimmed sensor gain/offset coefficients and linearization tables in pressure or temperature transmitters operating in harsh environments. IC Role / Device Role / Timing Role: Nonvolatile configuration store accessed during power-up initialization and periodic self-test; SPI reads occur at <1 MHz during boot, writes only during calibration mode. Use Value: Enables field-replaceable sensor modules with unique calibration data preserved across 200+ year retention, eliminating need for external calibration EEPROM or MCU flash wear management. | Use Scenario: Holding patient-specific therapy parameters, device serial number, and usage logs in portable infusion pumps compliant with IEC 62304. IC Role / Device Role / Timing Role: Secure parameter vault: WP pin hardwired low during manufacturing to prevent unauthorized modification of safety-critical settings; STATUS register write-protection enforced via WPEN. Use Value: Meets Class B medical software requirements by isolating immutable configuration from volatile runtime data, reducing validation scope and enabling audit-ready change history via page-write logging. |
| Automotive Body Control Module | Smart Energy Meter Firmware Patch Storage |
Use Scenario: Saving seat/mirror position presets, lighting profiles, and door lock behavior in 12V automotive BCMs exposed to −40°C to +85°C ambient. IC Role / Device Role / Timing Role: SPI slave on shared MCU peripheral bus; withstands load-dump transients via 6.5V absolute max VCC rating; page writes occur during ignition-off maintenance windows. Use Value: Delivers AEC-Q100 stress reliability (ESD >4 kV) and automotive-grade temperature operation without derating, avoiding costly qualification of alternative memory technologies. | Use Scenario: Storing firmware patch images and cryptographic keys for OTA updates in ANSI C12.22-compliant electricity meters deployed in utility substations. IC Role / Device Role / Timing Role: Dual-role memory: holds encrypted patch binaries (read-only post-install) and mutable update metadata (write-protected via BP1/BP0); accessed via isolated SPI bus with watchdog-monitored transactions. Use Value: Supports secure, field-upgradable firmware with rollback capability - 32-byte pages align with AES-128 block size, and 1M endurance exceeds 10-year utility upgrade cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPI Serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 25LC080D-I/SN | Same die, identical electrical specs and pinout; differs only in marking code (no 'T' suffix) and minor packaging traceability format. | No functional difference; both rated for Industrial temp and 2.5–5.5V operation; same SOIC-8 footprint and thermal profile. | Select 25LC080D-I/SN if legacy BOM references non-'T' variant; no design or qualification impact. |
| AT25080B-SSHL-T | 8 Kbit SPI EEPROM with 16-byte page size, 20 MHz max clock, and different STATUS register layout (no WPEN bit); requires modified driver for BP bit handling. | Lacks hardware WP pin integration - write protection relies solely on STATUS register bits, increasing risk of accidental corruption during power glitches. | Choose only if higher clock speed (20 MHz) is mandatory and firmware can accommodate divergent protection logic and 16-byte page constraints. |
Compared with 25LC080D-I/SN, the 25LC080DT-I/SN offers identical functionality with standardized traceability marking; versus AT25080B-SSHL-T, it provides superior hardware-enforced security via WP pin + WPEN synergy and larger 32-byte pages for efficient firmware updates, making it preferred for safety-critical or high-integrity storage.
Availability
25LC080DT-I/SN is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device configuration, and automotive body control modules requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 25LC080DT-I/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, analog, FPGA, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 25LC080DT-I/SN belongs to Microchip's 25XX080C/D family of SPI Serial EEPROMs, designed specifically for robust, low-power nonvolatile data storage in cost-sensitive embedded systems where SPI interface simplicity and guaranteed data integrity are paramount.
FAQ
What is the maximum clock frequency supported by the 25LC080DT-I/SN?
The 25LC080DT-I/SN supports a maximum SPI clock frequency of 10 MHz when VCC is 4.5V to 5.5V. At lower voltages (2.5V ≤ VCC < 4.5V), the max clock drops to 5 MHz. These limits are defined in Table 1-2 of the DS22151B datasheet and ensure reliable setup/hold timing for SI and SO signals. The 25LC080DT-I/SN must be operated within these AC specifications to guarantee correct read/write behavior across its full industrial temperature range.
Does the 25LC080DT-I/SN support page write operations, and what is its page size?
Yes, the 25LC080DT-I/SN supports page write operations with a fixed page size of 32 bytes. This is confirmed in the Device Selection Table and Section 2.3 of the datasheet. Page writes allow up to 32 bytes to be loaded into the page buffer before initiating an internal write cycle, improving efficiency over byte-by-byte programming. However, all bytes in a page write must reside within the same physical page boundary (e.g., addresses 0x000–0x01F), or data wraps within the page - a constraint the 25LC080DT-I/SN firmware driver must enforce.
How does hardware write protection work on the 25LC080DT-I/SN?
Hardware write protection on the 25LC080DT-I/SN requires both the WP pin (Pin 3) to be held low AND the WPEN bit (bit 7 of STATUS register) to be set to '1'. When both conditions are met, writes to the nonvolatile bits of the STATUS register (BP0, BP1, WPEN) are blocked - preventing accidental changes to protection settings. Memory array writes remain subject to BP0/BP1 configuration. This dual-gate mechanism ensures that grounding WP during manufacturing locks protection policy, while WPEN=0 allows full STATUS register access even with WP low - a key flexibility for development and field service.
What is the endurance and data retention specification for the 25LC080DT-I/SN?
The 25LC080DT-I/SN is specified for >1 million erase/write cycles and >200 years of data retention at 25°C, as stated in Table 1-3 of DS22151B. These figures are characterized under standard conditions (VCC = 5.5V, TA = 25°C) and represent minimum guaranteed performance. Real-world retention may extend beyond 200 years at lower temperatures, and endurance remains >1M cycles across the full industrial temperature range (−40°C to +85°C), making the 25LC080DT-I/SN suitable for applications demanding multi-decade reliability without refresh.
Can the 25LC080DT-I/SN be used in a 3.3V system, and what are the voltage requirements?
Yes, the 25LC080DT-I/SN is fully compatible with 3.3V systems. Its specified VCC range is 2.5V to 5.5V, and all DC and AC characteristics - including 10 MHz max clock - are guaranteed at 3.3V (within the 2.5V–4.5V VCC band per Table 1-2). Logic thresholds scale with VCC (e.g., VIH1 = 0.7×VCC), ensuring interoperability with 3.3V MCUs. No level-shifting is required, and the 25LC080DT-I/SN draws only 2.5 mA typical read current at 3.3V/5 MHz, supporting low-power designs.
25LC080DT-I/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:
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
25LC080DT-I/SN FAQ
1.How can I place an order for 25LC080DT-I/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 25LC080DT-I/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 25LC080DT-I/SN reliable?
The price and inventory of 25LC080DT-I/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 25LC080DT-I/SN is usually 5 days.
3.What payment methods are accepted for 25LC080DT-I/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 25LC080DT-I/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 25LC080DT-I/SN?
25LC080DT-I/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 25LC080DT-I/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 25LC080DT-I/SN?
For technical support, including 25LC080DT-I/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 25LC080DT-I/SN requirements.
6.How does Aetrix verify that 25LC080DT-I/SN is sourced from the original manufacturer or authorized distributors?
All 25LC080DT-I/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 25LC080DT-I/SN meets industry standards.
7.What is the process for return or replacement of 25LC080DT-I/SN?
All 25LC080DT-I/SN units undergo pre-shipment inspection (PSI). If there is an issue with 25LC080DT-I/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 25LC080DT-I/SN part is unused and in its original packaging.
Return procedure for 25LC080DT-I/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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