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Microchip Technology AT25020AY6-10YH-1.8
- Part No.:
- AT25020AY6-10YH-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
AT25020AY6-10YH-1.8.pdf
- Description:
- IC EEPROM 2KBIT SPI 8MINI MAP
- Quantity:
- Payment:
- Shipping:
Inventory:2,120
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Product details
Overview
AT25020AY6-10YH-1.8 from Microchip Technology (formerly Atmel) is a 2-Kbit SPI serial EEPROM organized as 256 × 8 bits, supporting 1.8 V to 5.5 V operation, 20 MHz clock rate at 5 V, 8-byte page write mode, and block write protection for 1/4, 1/2, or full memory array-used in industrial sensor calibration storage and embedded firmware parameter retention.
For engineers reviewing the AT25020AY6-10YH-1.8 datasheet, AT25020AY6-10YH-1.8 pinout, AT25020AY6-10YH-1.8 application, or AT25020AY6-10YH-1.8 equivalent, key selection criteria include low-voltage 1.8 V compatibility, MLP 2×3 mm DFN package footprint, SPI Mode 0/3 support, 1 million write cycles endurance, and hardware write protection via WP/HOLD pins.
Technical Context
The AT25020AY6-10YH-1.8 implements a synchronous SPI slave interface with separate SI/SO lines, MSB-first data transfer, and status register–controlled block protection (BP1/BP0). It operates exclusively as a slave device with no internal clock generation, relying on external master SCK timing.
Its architecture includes a self-timed internal write cycle (≤5 ms), automatic address increment during page writes, and dual-layer data protection: software-enabled via WREN/WRSR instructions and hardware-enforced via dedicated WP and HOLD pins that suspend communication without resetting sequence state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2048 bits (256 words × 8 bits), sufficient for storing configuration registers or calibration coefficients in space-constrained microcontroller systems. |
| Supply Voltage Range | 1.8 V to 5.5 V - enables direct interfacing with 1.8 V logic families and backward compatibility with 3.3 V/5 V host controllers without level shifting. |
| Max Clock Frequency | 20 MHz at VCC = 5.0 V - supports high-speed parameter updates in real-time control loops or boot-time configuration loading. |
| Write Endurance | 1,000,000 cycles - ensures reliable field recalibration over product lifetime in industrial monitoring applications. |
| Data Retention | 100 years at +25 °C - guarantees long-term integrity of stored calibration data or security keys without refresh. |
| Page Write Size | 8 bytes - minimizes write latency per transaction while avoiding excessive bus occupancy during burst programming. |
| Operating Temperature | −40 °C to +85 °C - qualified for industrial-grade deployment in automotive ECUs, PLC modules, and outdoor IoT gateways. |
Pinout & Package
AT25020AY6-10YH-1.8 uses an 8-lead Ultra Thin mini-MAP (MLP 2×3 mm) DFN package with exposed thermal pad, RoHS-compliant NiPdAu lead finish, and dual-no-lead construction optimized for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; must be driven low to initiate SPI communication and high to place SO in high-impedance state. |
| SCK | Serial Clock Input | Asynchronous master-generated clock; timing-critical for setup/hold compliance (min 20 ns high/low time at 1.8 V). |
| SI | Serial Data Input | Receives op-codes (e.g., WRITE, WREN), addresses, and data; MSB-first, sampled on SCK rising edge in Mode 0. |
| SO | Serial Data Output | Drives read data and status register contents; tri-stated when CS is high or HOLD is active. |
| GND | Ground Reference | Primary return path for all I/O and power currents; requires low-impedance connection to minimize noise coupling into SPI signals. |
| VCC | Power Supply | Single supply input supporting 1.8–5.5 V; decoupling capacitor (≥100 nF) required within 5 mm of VCC/GND pins. |
| WP | Write Protect | Hardware lock: drives low to inhibit all write operations regardless of WREN status or status register settings. |
| HOLD | Communication Suspend | Pauses ongoing SPI transfer (e.g., mid-read/write) without resetting internal address counter or command state machine. |
Key Features
| Feature | Design Value |
|---|---|
| SPI Mode 0 & 3 Support | Enables interoperability with diverse microcontrollers including legacy 68HC11 and modern ARM Cortex-M SPI peripherals without protocol translation. |
| Block Write Protection | Four configurable protection levels (none, 1/4, 1/2, full array) implemented via nonvolatile BP1/BP0 bits, preventing accidental overwrite of critical firmware parameters. |
| Self-timed Write Cycle | Eliminates need for external write-cycle timing control or polling delay insertion-host only checks RDY bit via RDSR instruction. |
| Low Standby Current | 0.1 µA typical at 1.8 V - extends battery life in always-on sensor nodes where EEPROM remains powered but idle >99% of time. |
| Industrial Temp Range | Rated −40 °C to +85 °C with full electrical specification compliance, enabling use in unheated enclosures or engine bay–adjacent modules. |
Applications
| Industrial Sensor Calibration | Embedded Firmware Configuration |
|---|---|
Use Scenario: Storing factory-trimmed offset/gain coefficients for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile parameter storage accessed during power-up initialization and runtime calibration updates via SPI. Use Value: Enables field recalibration without firmware reflash; 1M endurance supports >100 recalibrations/year over 10-year product life. | Use Scenario: Holding user-configurable settings (e.g., communication baud rate, alarm thresholds) in HVAC controller HMI modules. IC Role / Device Role / Timing Role: Persistent configuration store updated infrequently but read at every boot; accessed via standard SPI driver stack. Use Value: Survives power loss and firmware upgrades; 100-year data retention eliminates need for backup supercapacitors or batteries. |
| Automotive Body Control Module | Medical Diagnostic Equipment |
Use Scenario: Recording seat position memory, mirror angle presets, and lighting profiles in vehicle body control units. IC Role / Device Role / Timing Role: SPI-connected configuration memory with WP pin hardwired to MCU GPIO for secure write-lock during normal operation. Use Value: Hardware write protection prevents corruption from EMI-induced MCU glitches; 1.8 V operation matches low-power domain voltage rails. | Use Scenario: Storing device-specific calibration constants and regulatory compliance logs in portable ultrasound imaging units. IC Role / Device Role / Timing Role: Secure, traceable parameter storage with audit trail capability via timestamped write cycles. Use Value: Meets IEC 62304 data integrity requirements; 100-year retention satisfies medical device shelf-life mandates without periodic refresh. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95256-DFMN6TP/K | 256 Kbit capacity, same MLP 2×3 mm package, 20 MHz max clock, but requires 2.5–5.5 V supply (no 1.8 V support). | Higher density for multi-parameter logging; unsuitable for 1.8 V-only systems due to minimum 2.5 V VCC requirement. | Select when >2 Kbit storage is needed and system VCC ≥2.5 V; verify hold-time compatibility with host SPI peripheral. |
| BR25G256FJ-3GE2 | 256 Kbit, 1.7–5.5 V operation, same 8-pin DFN (2×3 mm), but supports Quad SPI and has faster 40 MHz clock rating. | Supports higher bandwidth firmware updates; lacks HOLD pin, requiring software-managed transaction suspension. | Choose for future-proofing with quad-I/O capability or when 40 MHz throughput is critical; confirm host supports enhanced SPI modes. |
Compared with M95256-DFMN6TP/K and BR25G256FJ-3GE2, the AT25020AY6-10YH-1.8 provides optimal balance of ultra-low-voltage operation, proven industrial reliability, and minimal pin count-making it ideal for cost-sensitive, space-constrained 1.8 V embedded systems where 2 Kbit suffices.
Availability
AT25020AY6-10YH-1.8 is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded firmware configuration, and automotive body control module designs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AT25020AY6-10YH-1.8 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 is a global semiconductor company specializing in microcontrollers, analog devices, and memory solutions, with a focus on robust, long-lifecycle components for industrial and automotive markets.
The AT25020AY6-10YH-1.8 belongs to Microchip's AT25xxxA serial EEPROM family, designed specifically for low-power, low-voltage embedded systems requiring reliable nonvolatile storage with minimal board space and simple SPI integration.
FAQ
What is the maximum operating clock frequency of the AT25020AY6-10YH-1.8 at 1.8 V?
The AT25020AY6-10YH-1.8 supports up to 5 MHz SCK frequency when operated at 1.8 V, as specified in Table 4 AC Characteristics under the 1.8–5.5 V column. This ensures reliable timing margins for low-voltage host controllers while maintaining compatibility with higher-speed 20 MHz operation at 5 V.
Does the AT25020AY6-10YH-1.8 require an external pull-up resistor on the SO pin?
No, the AT25020AY6-10YH-1.8 does not require an external pull-up on SO. Its SO pin is actively driven high or low during read operations and enters high-impedance state when CS is high or HOLD is asserted-eliminating need for external biasing and reducing BOM count.
How is write protection implemented on the AT25020AY6-10YH-1.8?
Write protection on the AT25020AY6-10YH-1.8 is implemented through two independent mechanisms: hardware protection via the WP pin (low = all writes disabled), and software-configurable block protection via BP1/BP0 bits in the status register, allowing selective locking of 0%, 25%, 50%, or 100% of the memory array.
Can the AT25020AY6-10YH-1.8 be used in SPI Mode 1 or Mode 2?
No, the AT25020AY6-10YH-1.8 explicitly supports only SPI Modes 0 (CPOL = 0, CPHA = 0) and 3 (CPOL = 1, CPHA = 1), as stated in its Features section. Using Mode 1 or Mode 2 will result in incorrect data sampling and communication failure.
What package type does the AT25020AY6-10YH-1.8 use, and what are its key mechanical dimensions?
The AT25020AY6-10YH-1.8 uses an 8-lead Ultra Thin mini-MAP (MLP 2×3 mm) DFN package (ordering code suffix "8Y6"), measuring 2.00 mm × 3.00 mm body size with 0.50 mm pitch, 0.30 mm max height, and an exposed thermal pad-ideal for thermally constrained, high-density PCB layouts.
AT25020AY6-10YH-1.8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-UFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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:
- 20 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- -
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-Mini Map (2x3)
AT25020AY6-10YH-1.8 FAQ
1.How can I place an order for AT25020AY6-10YH-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25020AY6-10YH-1.8 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 AT25020AY6-10YH-1.8 reliable?
The price and inventory of AT25020AY6-10YH-1.8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25020AY6-10YH-1.8 is usually 5 days.
3.What payment methods are accepted for AT25020AY6-10YH-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25020AY6-10YH-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25020AY6-10YH-1.8?
AT25020AY6-10YH-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25020AY6-10YH-1.8 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 AT25020AY6-10YH-1.8?
For technical support, including AT25020AY6-10YH-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25020AY6-10YH-1.8 requirements.
6.How does Aetrix verify that AT25020AY6-10YH-1.8 is sourced from the original manufacturer or authorized distributors?
All AT25020AY6-10YH-1.8 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 AT25020AY6-10YH-1.8 meets industry standards.
7.What is the process for return or replacement of AT25020AY6-10YH-1.8?
All AT25020AY6-10YH-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT25020AY6-10YH-1.8, 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 AT25020AY6-10YH-1.8 part is unused and in its original packaging.
Return procedure for AT25020AY6-10YH-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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