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Microchip Technology AT25160AY1-10YI-2.7
- Part No.:
- AT25160AY1-10YI-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
AT25160AY1-10YI-2.7.pdf
- Description:
- IC EEPROM 16KBIT SPI 20MHZ 8MAP
- Quantity:
- Payment:
- Shipping:
Inventory:4,767
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Product details
Overview
AT25160AY1-10YI-2.7 from Microchip Technology (formerly Atmel) is a 16-kbit SPI serial EEPROM organized as 2048 × 8 bits, operating from 2.7V to 5.5V with 20 MHz max clock rate at 5V, 32-byte page write capability, and automotive-grade industrial temperature range (−40°C to +85°C). It delivers high-reliability nonvolatile storage for microcontroller-based systems requiring low-voltage operation and hardware/software data protection.
For engineers reviewing the AT25160AY1-10YI-2.7 datasheet, AT25160AY1-10YI-2.7 pinout, AT25160AY1-10YI-2.7 application, or AT25160AY1-10YI-2.7 equivalent, this device supports SPI Modes 0 and 3, features block write protection (1/4, 1/2, or full array), Write Protect (WP) and HOLD pins, and self-timed 5 ms max write cycles - critical for automotive body control, industrial sensor calibration, and embedded firmware parameter storage.
Technical Context
The AT25160AY1-10YI-2.7 implements a synchronous SPI slave interface with separate SI (input) and SO (output) lines, MSB-first data transfer, and op-code–driven command execution (e.g., WREN, WRITE, RDSR). Its status register controls write enable (WEN), ready/busy (RDY), and block protection (BP1/BP0) with nonvolatile BP bits defining protected address ranges: 0600–07FFh for AT25160A.
Hardware protection is enforced via the WP pin when WPEN = 1, disabling writes to the status register and protected memory blocks; HOLD suspends ongoing serial communication without resetting the sequence. The device requires no external erase cycle and automatically returns to write-disable state post-write.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8 bits) - provides sufficient space for configuration tables, calibration coefficients, or boot parameters in resource-constrained MCU systems. |
| Supply Voltage | 2.7V to 5.5V - enables direct interfacing with 3.3V and 5V microcontrollers without level-shifting. |
| Max Clock Frequency | 20 MHz at VCC = 5V - supports high-speed read/write for time-critical logging or real-time parameter updates. |
| Page Write Size | 32 bytes - allows efficient burst programming while minimizing write latency per transaction. |
| Write Cycle Time | 5 ms maximum - defines worst-case delay before next command can be issued; impacts system responsiveness during EEPROM updates. |
| Endurance & Retention | 1 million write cycles / 100 years data retention - ensures long-term reliability in field-deployed equipment with frequent reconfiguration. |
| Operating Temperature | −40°C to +85°C - certified for industrial and automotive under-hood applications where thermal stability is critical. |
Pinout & Package
AT25160AY1-10YI-2.7 uses an 8-lead Miniature Array Package (MAP), 4.90 mm × 3.00 mm body, non-leaded, dual footprint compatible with SOIC and TSSOP layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; must be low to accept commands; high impedance on SO when CS is high. |
| SCK | Serial Clock | Input-only clock synchronized to master; determines timing of SI sampling and SO output edges. |
| SI | Serial Data Input | Command/address/data input path; MSB-first; ignored during HOLD or when CS is high. |
| SO | Serial Data Output | Data output path during READ/RDSR; tri-stated when CS is high or during HOLD. |
| GND | Ground Reference | Primary return path for VCC and all I/O signals; requires low-impedance PCB connection. |
| VCC | Power Supply | Single supply input (2.7–5.5V); powers internal logic and memory array; decoupling capacitor required. |
| WP | Write Protect | Hardware lock for status register and protected memory blocks when WPEN = 1; tied low to enforce protection. |
| HOLD | Communication Suspend | Pauses ongoing SPI transfer without resetting sequence; requires SCK low during assertion/deassertion. |
Key Features
| Feature | Design Value |
|---|---|
| SPI Mode Compatibility | Supports Modes 0 (CPOL=0, CPHA=0) and 3 (CPOL=1, CPHA=1) - interoperable with diverse MCU SPI peripherals without mode reconfiguration. |
| Block Write Protection | Configurable via status register to protect 1/4 (0600–07FFh), 1/2, or entire memory array - prevents accidental overwrite of critical calibration or security data. |
| Hardware + Software Protection | WP pin (hardware) and WREN/WRDI instructions (software) provide layered defense against unintended writes - essential for safety-critical firmware storage. |
| Self-timed Write Cycle | No external timing control needed; internal timer completes write in ≤5 ms - simplifies host firmware and eliminates polling overhead beyond RDSR status check. |
| Automotive-Grade Packaging | 8Y1 MAP package meets lead-free/halogen-free requirements and operates across −40°C to +85°C - suitable for automotive body electronics and industrial control modules. |
Applications
| Automotive Body Control Module | Industrial Sensor Calibration Storage |
|---|---|
|
Use Scenario: Storing door lock actuator profiles, mirror position presets, and lighting configuration across vehicle life cycles. IC Role / Device Role / Timing Role: Nonvolatile parameter storage interfaced directly to 8-bit/16-bit automotive MCUs via SPI. Use Value: Ensures settings persist through battery disconnects and support over-the-air updates without risking corruption via WP/HOLD protection. |
Use Scenario: Retaining factory-trimmed offset/gain coefficients for pressure, temperature, and current sensors in PLC analog input modules. IC Role / Device Role / Timing Role: SPI EEPROM providing deterministic 5 ms write latency and 1M endurance for recalibration events. Use Value: Eliminates need for external backup power during calibration; block protection prevents accidental overwrite of factory-set values. |
| Medical Device Configuration Memory | Smart Energy Meter Firmware Parameters |
|
Use Scenario: Holding user-selectable alarm thresholds, display brightness, and language preferences in portable diagnostic tools. IC Role / Device Role / Timing Role: Low-power (≤2 µA standby at 2.7V) serial EEPROM accessed during boot and UI configuration changes. Use Value: Meets IEC 62304 Class B software requirements via write-protection and 100-year data retention for audit trails. |
Use Scenario: Storing tariff schedules, metering constants, and tamper-event logs in ANSI C12.22-compliant smart meters. IC Role / Device Role / Timing Role: Secure, high-endurance memory supporting encrypted parameter writes and anti-rollback protection. Use Value: Block write protection isolates tariff tables from firmware updates; HOLD pin enables safe interrupt handling during power transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95160-DRMN3TP/K | 16 Kbit SPI EEPROM, 1.8–5.5V, 20 MHz, TSSOP8 package; lacks HOLD pin and MAP footprint compatibility. | Requires PCB layout change due to different pinout and no HOLD functionality - unsuitable where suspend-on-interrupt is mandatory. | Select when footprint flexibility exists and HOLD is unused; verify WP behavior matches AT25160AY1-10YI-2.7's WPEN-controlled hardware lock. |
| BR24G16FJ-3GE2 | 16 Kbit I²C EEPROM, 1.7–5.5V, 400 kHz/1 MHz, 8-pin SOP-J; uses I²C not SPI, no WP/HOLD pins, different addressing. | Incompatible interface protocol; cannot substitute without MCU firmware and schematic redesign. | Choose only if migrating from I²C architecture; not a functional replacement for AT25160AY1-10YI-2.7's SPI/HOLD/WP feature set. |
Compared with M95160-DRMN3TP/K and BR24G16FJ-3GE2, AT25160AY1-10YI-2.7 uniquely combines SPI Mode 0/3 support, HOLD pin for interrupt-safe transfers, MAP package for space-constrained automotive modules, and configurable block protection - making it optimal for systems demanding robust, low-latency, and layout-compatible nonvolatile storage.
Availability
AT25160AY1-10YI-2.7 is available at Aetrix Electronics and suitable for automotive body control, industrial sensor calibration, medical device configuration, and smart energy metering requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AT25160AY1-10YI-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
Microchip Technology acquired Atmel in 2016 and continues to manufacture, support, and extend the AT25xxx family of SPI EEPROMs with full backward compatibility and enhanced quality assurance.
The AT25160AY1-10YI-2.7 belongs to Microchip's serial EEPROM product line, engineered for reliable, low-voltage nonvolatile storage in automotive, industrial, and medical systems where data integrity, write protection, and extended temperature operation are mandatory.
FAQ
What is the memory organization of the AT25160AY1-10YI-2.7?
The AT25160AY1-10YI-2.7 contains 16,384 bits of EEPROM memory organized as 2048 words × 8 bits. This structure supports byte-level random access and 32-byte page writes. Addressing uses A10–A0 (11 bits), with unused upper address bits (A15–A11) treated as don't-care. The AT25160AY1-10YI-2.7 uses this fixed layout across all operating voltages and temperatures.
Does the AT25160AY1-10YI-2.7 support both SPI Mode 0 and Mode 3?
Yes, the AT25160AY1-10YI-2.7 explicitly supports SPI Modes 0 (CPOL = 0, CPHA = 0) and 3 (CPOL = 1, CPHA = 1), as confirmed in its official datasheet. This dual-mode capability ensures interoperability with a wide range of microcontrollers including legacy 68HC11 derivatives and modern ARM Cortex-M SPI peripherals without requiring mode-specific firmware adaptation.
What is the function of the HOLD pin on the AT25160AY1-10YI-2.7?
The HOLD pin on the AT25160AY1-10YI-2.7 suspends ongoing SPI communication without resetting the internal command sequence. When asserted low while SCK is low, it places SO in high-impedance and ignores SI inputs until deasserted. This enables safe interruption by higher-priority MCU tasks - a key feature absent in many competing SPI EEPROMs and critical for real-time systems using AT25160AY1-10YI-2.7.
How does block write protection work on the AT25160AY1-10YI-2.7?
Block write protection on the AT25160AY1-10YI-2.7 is controlled by BP1/BP0 bits in the status register. For AT25160A, setting BP1=0/BP0=1 protects addresses 0600h–07FFh (1/4 array); BP1=1/BP0=0 protects 0400h–07FFh (1/2); BP1=1/BP0=1 locks the full array (0000h–07FFh). These bits are nonvolatile and written via WRSR instruction - a core safeguard implemented in AT25160AY1-10YI-2.7 to prevent firmware corruption.
What package type is used by the AT25160AY1-10YI-2.7?
The AT25160AY1-10YI-2.7 uses the 8Y1 Miniature Array Package (MAP): an 8-lead, 4.90 mm × 3.00 mm body, non-leaded surface-mount package with dual footprint compatibility to SOIC and TSSOP. This compact, lead-free/halogen-free package meets automotive AEC-Q200 stress test requirements and is specified for industrial temperature operation (−40°C to +85°C) in the AT25160AY1-10YI-2.7 datasheet.
AT25160AY1-10YI-2.7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-VDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 16Kbit
- Memory Organization:
- 2K x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 20 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- -
- Voltage - Supply:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MAP (3x4.9)
AT25160AY1-10YI-2.7 FAQ
1.How can I place an order for AT25160AY1-10YI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25160AY1-10YI-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 AT25160AY1-10YI-2.7 reliable?
The price and inventory of AT25160AY1-10YI-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 AT25160AY1-10YI-2.7 is usually 5 days.
3.What payment methods are accepted for AT25160AY1-10YI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25160AY1-10YI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25160AY1-10YI-2.7?
AT25160AY1-10YI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25160AY1-10YI-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 AT25160AY1-10YI-2.7?
For technical support, including AT25160AY1-10YI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25160AY1-10YI-2.7 requirements.
6.How does Aetrix verify that AT25160AY1-10YI-2.7 is sourced from the original manufacturer or authorized distributors?
All AT25160AY1-10YI-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 AT25160AY1-10YI-2.7 meets industry standards.
7.What is the process for return or replacement of AT25160AY1-10YI-2.7?
All AT25160AY1-10YI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT25160AY1-10YI-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 AT25160AY1-10YI-2.7 part is unused and in its original packaging.
Return procedure for AT25160AY1-10YI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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