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Microchip Technology AT25020N-10SC-2.7
- Part No.:
- AT25020N-10SC-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT25020N-10SC-2.7.pdf
- Description:
- IC EEPROM 2KBIT SPI 3MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,904
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Product details
Overview
AT25020N-10SC-2.7 from Atmel (now Microchip) is a 2-Kbit SPI serial EEPROM organized as 256 × 8-bit memory, supporting 2.7V–5.5V operation, 2.1 MHz clock rate at 5V, and 8-byte page write mode. It features hardware write protection via WP pin, HOLD for communication suspension, and block-level write protection covering 1/4, 1/2, or full array - used in industrial sensor calibration storage and embedded microcontroller configuration retention.
For engineers reviewing the AT25020N-10SC-2.7 datasheet, AT25020N-10SC-2.7 pinout, AT25020N-10SC-2.7 application, or AT25020N-10SC-2.7 equivalent, key selection criteria include VCC range compatibility (2.7–5.5V), SOIC-8 JEDEC package footprint, 10 ms max self-timed write cycle, and SPI Mode 0/3 support with CS/SCK/SI/SO interface timing compliance.
Technical Context
The AT25020N-10SC-2.7 operates as a slave SPI peripheral with separate SI (input) and SO (output) pins, MSB-first data transfer, and instruction-based command set including WREN, WRITE, READ, RDSR, and WRSR. Its status register controls BP1/BP0 bits for nonvolatile block protection and reports RDY/BUSY and WEN states.
It supports three VCC operating ranges (1.8V, 2.7V, 5.0V), with AC timing parameters scaled per voltage: tWH/tWL = 200 ns (4.5–5.5V), 800 ns (1.8–3.6V); tV = 200 ns (4.5–5.5V), 800 ns (1.8–3.6V); and fSCK up to 2.1 MHz at 5V or 0.5 MHz at 1.8V - all verified across -40°C to +85°C industrial temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Kbit (256 words × 8 bits), sufficient for firmware parameter tables and device ID storage |
| VCC Range | 2.7V to 5.5V - enables direct interfacing with 3.3V and 5V microcontrollers without level shifting |
| Max Clock Rate | 2.1 MHz at 5V - supports high-throughput configuration loading in real-time systems |
| Write Cycle Time | 10 ms max - defines minimum delay between consecutive page writes; no external erase required |
| Endurance | 1 million write cycles - ensures >10 years of daily reprogramming in field-upgradable devices |
| Data Retention | 100 years at 25°C - guarantees long-term reliability for unpowered archival storage |
| ESD Protection | >4000V HBM - provides robust handling during board assembly and field service |
Pinout & Package
AT25020N-10SC-2.7 uses an 8-pin JEDEC SOIC (8S1) package, 0.150" wide, with gull-wing leads and standard 1.27 mm pitch. Pin 1 is marked by notch or dot; body dimensions are 4.98 mm × 3.99 mm × 1.75 mm max height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; must be low to accept instructions; high impedance on SO when CS high |
| SCK | Serial Clock | Input-only master-generated clock; timing critical for setup/hold compliance (tSU/tH) |
| SI | Serial Data Input | Accepts op-codes, addresses, and data; MSB first; ignored during HOLD or write cycle |
| SO | Serial Data Output | Tri-state output; drives data during READ; high-Z when CS high or during internal write |
| GND | Ground Reference | Return path for VCC and signal currents; requires low-impedance PCB plane connection |
| VCC | Power Supply | 2.7–5.5V supply; decoupling capacitor (0.1 µF) required within 10 mm of pin |
| WP | Write Protect | Hardware lock: low disables all writes regardless of WREN state; overrides software protection |
| HOLD | Communication Suspend | Pauses ongoing SPI transfer without resetting sequence; requires SCK low during assertion |
Key Features
| Feature | Design Value |
|---|---|
| Page Write Mode | 8-byte burst programming reduces total write time vs. byte-by-byte; address auto-increments within page boundary |
| Block Write Protection | Four nonvolatile BP1/BP0 settings protect 0%, 25%, 50%, or 100% of memory - prevents accidental overwrites of critical calibration data |
| Dual Write Protection | Combines hardware (WP pin) and software (WREN + status register) layers - eliminates single-point failure in safety-critical logging |
| HOLD Functionality | Enables multi-master arbitration or CPU interrupt servicing without losing SPI context - avoids re-initialization overhead |
| Industrial Temp Range | -40°C to +85°C operation confirmed in datasheet - suitable for automotive body control modules and outdoor IoT gateways |
Applications
| Industrial Sensor Calibration | Medical Device Configuration |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain coefficients for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed at power-up via SPI; RDY/BUSY polling ensures safe read before system initialization. Use Value: Eliminates need for external trimming components and enables field recalibration with verified 1M-cycle endurance. | Use Scenario: Retaining user-selected therapy parameters and device serial number in portable infusion pumps. IC Role / Device Role / Timing Role: Secure parameter EEPROM with WP pin hardwired to VCC and status register locked - prevents runtime corruption during battery swaps. Use Value: Meets IEC 62304 Class B software requirements via deterministic 10 ms write latency and 100-year data retention. |
| Automotive Body Control Module | Smart Energy Meter Firmware Patch Storage |
Use Scenario: Saving seat/mirror position presets and door lock status across ignition cycles in 12V vehicle systems. IC Role / Device Role / Timing Role: SPI slave interfaced to 3.3V MCU; HOLD pin used during CAN bus interrupt servicing to pause EEPROM access. Use Value: Automotive-grade qualification (-40°C to +85°C) and 4 kV ESD rating ensure reliability in electrically noisy cabin environments. | Use Scenario: Storing delta updates for firmware patches in utility meters deployed in remote substations. IC Role / Device Role / Timing Role: Low-power 2.7V operation allows direct connection to meter's backup supercapacitor rail during main power loss. Use Value: 2.7–5.5V VCC range and 100 µA standby current extend backup runtime while enabling secure patch validation pre-write. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95256-WMN6TP | 256 Kbit capacity, 20 MHz SPI, 1.8–5.5V, SO8 package; no HOLD pin | Higher density and speed but lacks HOLD functionality - unsuitable where SPI suspension is required | Select only if memory expansion is primary need and HOLD is unused in target design |
| BR25L2000FJ-WE2 | 2 Kbit, 10 MHz SPI, 1.7–5.5V, TSSOP-8; integrated write protection register only (no WP pin) | Smaller TSSOP-8 footprint and faster clock, but missing hardware WP pin - reduces fault tolerance | Prefer when board space is constrained and system-level write disable is managed entirely in firmware |
Compared with M95256-WMN6TP and BR25L2000FJ-WE2, AT25020N-10SC-2.7 uniquely combines industrial temperature rating, dual hardware/software write protection, and HOLD capability in a JEDEC SOIC-8 - making it optimal for designs requiring robustness under electrical stress and deterministic SPI flow control.
Availability
AT25020N-10SC-2.7 is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device configuration, and automotive body control modules requiring stable component supply and long-term lifecycle support.
Supply support for AT25020N-10SC-2.7 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
Atmel Corporation, now part of Microchip Technology, is a semiconductor manufacturer specializing in microcontrollers, nonvolatile memory, and security ICs for embedded systems.
The AT250xx family delivers SPI-compatible serial EEPROMs optimized for low-voltage, low-power, and industrial-grade reliability - targeting applications where firmware resilience and field-programmability are critical.
FAQ
What is the maximum clock frequency supported by AT25020N-10SC-2.7?
The AT25020N-10SC-2.7 supports up to 2.1 MHz at VCC = 4.5–5.5V, 2.1 MHz at 2.7–5.5V, and 0.5 MHz at 1.8–3.6V. These values are specified in the AC Characteristics table and validated across the full industrial temperature range (-40°C to +85°C). The AT25020N-10SC-2.7 must operate within these limits to guarantee tSU, tH, and tWH timing compliance.
Does AT25020N-10SC-2.7 require an external erase cycle before writing?
No, the AT25020N-10SC-2.7 performs fully self-timed write cycles with no separate erase step required. Each WRITE instruction automatically handles erase-and-program internally. The AT25020N-10SC-2.7 completes writes in ≤10 ms, and the RDY bit (Status Register Bit 0) indicates completion - enabling efficient polling-based firmware integration.
How does the WP pin function on AT25020N-10SC-2.7?
The WP (Write Protect) pin on AT25020N-10SC-2.7 provides hardware-level write inhibition: when pulled low, it blocks all WRITE, WRSR, and WREN commands regardless of status register settings. If WP goes low mid-write, ongoing operations continue, but new commands are rejected. The AT25020N-10SC-2.7 thus delivers fail-safe protection against voltage glitch-induced corruption.
Can AT25020N-10SC-2.7 be used with SPI Mode 1 or Mode 2 interfaces?
No, the AT25020N-10SC-2.7 explicitly supports only SPI Modes 0 (CPOL = 0, CPHA = 0) and 3 (CPOL = 1, CPHA = 1), as stated in the Features section. Attempting Mode 1 or Mode 2 will violate setup/hold timing and result in corrupted reads or failed writes. The AT25020N-10SC-2.7 datasheet confirms this limitation in both functional description and timing diagrams.
What package type is used for AT25020N-10SC-2.7?
The AT25020N-10SC-2.7 uses an 8-lead JEDEC-standard SOIC package (8S1), 0.150" wide, with gull-wing leads and 1.27 mm pitch. This matches industry-standard footprints for automated assembly and is compatible with common reflow profiles. The "SC" suffix in the part number explicitly denotes SOIC packaging, distinguishing it from PDIP ("PC") variants.
AT25020N-10SC-2.7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 2Kbit
- Memory Organization:
- 256 x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 3 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- -
- Voltage - Supply:
- 2.7V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT25020N-10SC-2.7 FAQ
1.How can I place an order for AT25020N-10SC-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25020N-10SC-2.7 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 AT25020N-10SC-2.7 reliable?
The price and inventory of AT25020N-10SC-2.7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25020N-10SC-2.7 is usually 5 days.
3.What payment methods are accepted for AT25020N-10SC-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25020N-10SC-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25020N-10SC-2.7?
AT25020N-10SC-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25020N-10SC-2.7 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 AT25020N-10SC-2.7?
For technical support, including AT25020N-10SC-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25020N-10SC-2.7 requirements.
6.How does Aetrix verify that AT25020N-10SC-2.7 is sourced from the original manufacturer or authorized distributors?
All AT25020N-10SC-2.7 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 AT25020N-10SC-2.7 meets industry standards.
7.What is the process for return or replacement of AT25020N-10SC-2.7?
All AT25020N-10SC-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT25020N-10SC-2.7, 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 AT25020N-10SC-2.7 part is unused and in its original packaging.
Return procedure for AT25020N-10SC-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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