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Microchip Technology AT25160AY1-10YI-1.8
- Part No.:
- AT25160AY1-10YI-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
AT25160AY1-10YI-1.8.pdf
- Description:
- IC EEPROM 16KBIT SPI 20MHZ 8MAP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
AT25160AY1-10YI-1.8 from Microchip Technology (formerly Atmel) is a 16-kbit SPI serial EEPROM organized as 2048 × 8 bits, supporting 1.8V to 5.5V operation, 20 MHz clock rate at 5V, 32-byte page write, and automotive-grade extended temperature range (−40°C to +125°C). It serves as nonvolatile configuration storage in microcontroller-based automotive control units.
For engineers reviewing the AT25160AY1-10YI-1.8 datasheet, AT25160AY1-10YI-1.8 pinout, AT25160AY1-10YI-1.8 application, or AT25160AY1-10YI-1.8 equivalent, key selection criteria include low-voltage compatibility (1.8V min), block write protection granularity, HOLD/CS timing behavior, and MAP package footprint for space-constrained PCB layouts.
Technical Context
The AT25160AY1-10YI-1.8 operates as an SPI slave with fixed 3-wire interface (CS, SCK, SI/SO), supports Modes 0 and 3, and uses MSB-first transmission. Its internal architecture includes a nonvolatile status register with BP0/BP1 bits enabling 1/4, 1/2, or full array write protection, and WPEN bit controlling hardware write protect pin functionality.
All write cycles are self-timed (max 5 ms), require prior WREN instruction, and support page writes up to 32 bytes. The device features dual supply voltage support (1.8V–5.5V), high-reliability endurance (1 million cycles), and 100-year data retention - validated across −40°C to +125°C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8-bit words) - provides sufficient space for firmware configuration, calibration data, and event logs in embedded controllers. |
| Supply Voltage Range | 1.8 V to 5.5 V - enables direct interfacing with 1.8V logic families and backward compatibility with 3.3V/5V systems without level shifters. |
| Max Clock Frequency | 20 MHz at VCC = 5.0 V - supports fast programming and read access in high-throughput applications like real-time sensor calibration updates. |
| Page Write Size | 32 bytes - allows efficient burst writes while minimizing write cycle overhead and reducing host MCU intervention time. |
| Write Endurance | 1,000,000 cycles - ensures long-term reliability in applications requiring frequent parameter updates, such as adaptive motor control tuning. |
| Data Retention | 100 years - guarantees persistent storage integrity over product lifetime without refresh, critical for automotive safety-critical modules. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive environments and industrial edge devices exposed to thermal stress. |
Pinout & Package
AT25160AY1-10YI-1.8 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 1 is marked by index area on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; must be held low during entire SPI transaction; controls device selection in multi-slave bus configurations. |
| SCK | Serial Clock | Input-only synchronous clock; defines timing for SI sampling and SO output; supports up to 20 MHz at 5V. |
| SI | Serial Data Input | MOSI input for op-code, address, and write data; MSB-first protocol requires precise setup/hold timing relative to SCK. |
| SO | Serial Data Output | MISO output for read data and status register contents; tri-stated when CS is high or during HOLD assertion. |
| GND | Ground Reference | Primary return path for all I/O and power currents; must be low-impedance connection to minimize noise coupling into SPI signals. |
| VCC | Power Supply | Single-supply input supporting 1.8V–5.5V; internal regulation ensures stable core voltage across wide input range. |
| WP | Write Protect | Hardware lock for status register and protected memory blocks when WPEN=1; prevents accidental writes during power transitions. |
| HOLD | Communication Suspend | Pauses ongoing SPI transfer without resetting sequence; requires SCK low before assertion; maintains internal address counter state. |
Key Features
| Feature | Design Value |
|---|---|
| Block Write Protection | Configurable via status register to protect 0%, 25%, 50%, or 100% of memory - enables secure partitioning of factory calibration vs. field-updatable parameters. |
| Low-Voltage Operation | Functional down to 1.8V with full AC/DC specs - eliminates need for external voltage translators in battery-powered or energy-harvesting systems. |
| Self-Timed Write Cycle | Max 5 ms internal erase/write completion - removes requirement for host polling delay; RDSR instruction confirms readiness via RDY bit. |
| HOLD Functionality | Preserves serial sequence state during interrupt-driven MCU operation - avoids reinitialization overhead when servicing higher-priority tasks. |
| Automotive Qualification | AEC-Q100 Grade 2 compliant (−40°C to +125°C) with lead-free/halogen-free packaging - meets OEM requirements for engine control, ADAS, and body electronics. |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
Use Scenario: Storing adaptive fuel trim values, misfire counters, and diagnostic trouble codes (DTCs) that persist across ignition cycles. IC Role / Device Role / Timing Role: Nonvolatile configuration and event logging memory interfaced directly to 16-bit automotive MCU via SPI. Use Value: Enables compliance with OBD-II standards through guaranteed 100-year data retention and 1M-cycle endurance under thermal cycling stress. |
Use Scenario: Retaining camera calibration offsets, radar fusion parameters, and lane-departure warning thresholds updated during vehicle initialization. IC Role / Device Role / Timing Role: Secure, protected memory for safety-critical calibration data accessed during boot and runtime by vision processor SoC. Use Value: Block write protection prevents corruption of factory-set coefficients during over-the-air software updates or ECU reprogramming. |
| Industrial Motor Drive Controller | Smart Energy Meter |
Use Scenario: Saving motor thermal model coefficients, current limit profiles, and fault history logs in variable-frequency drives operating in harsh electrical environments. IC Role / Device Role / Timing Role: Robust SPI EEPROM providing deterministic write latency and immunity to brown-out conditions during mains transients. Use Value: 1.8V operation allows direct connection to isolated 3.3V logic rails; HOLD pin enables seamless interruption during emergency stop sequences. |
Use Scenario: Archiving tariff schedules, tamper-event timestamps, and metering calibration constants in utility-grade electricity meters with 20+ year service life. IC Role / Device Role / Timing Role: Long-life nonvolatile memory storing regulatory-compliant billing data and cryptographic keys for secure firmware updates. Use Value: AEC-Q100 qualification ensures reliability under wide ambient temperature swings and long-term storage without data degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95160-DRMN6TP/K | 16 Kbit SPI EEPROM, 1.8V–5.5V, same 8-lead TSSOP (8A2) package but not MAP-compatible; max clock 20 MHz at 5V; no HOLD pin. | Lacks HOLD functionality and MAP footprint - unsuitable where suspend-on-interrupt or board-level footprint reuse is required. | Select when TSSOP layout exists and HOLD is unused; verify absence of HOLD dependency in existing firmware. |
| 25AA160CT-I/MNY | 16 Kbit SPI EEPROM, 1.8V–5.5V, same 8Y1 MAP package; includes enhanced ESD protection (4 kV HBM); identical pinout and timing. | Drop-in replacement with improved robustness against assembly ESD events; same block protection and endurance specs. | Preferred for new designs requiring higher manufacturing yield in high-ESD environments; fully compatible with AT25160AY1-10YI-1.8 firmware and layout. |
Compared with M95160-DRMN6TP/K, AT25160AY1-10YI-1.8 offers HOLD capability and MAP package flexibility; compared with 25AA160CT-I/MNY, it shares identical footprint and function but differs in ESD rating - making the latter better suited for high-volume automated assembly lines.
Availability
AT25160AY1-10YI-1.8 is available at Aetrix Electronics and suitable for automotive control units, ADAS modules, industrial motor drives, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AT25160AY1-10YI-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 strong heritage in automotive and industrial embedded markets.
The AT25160AY1-10YI-1.8 belongs to Microchip's AT25xxx family of SPI serial EEPROMs, designed specifically for reliable, low-power nonvolatile storage in safety-critical and thermally demanding applications.
FAQ
What is the maximum clock frequency supported by the AT25160AY1-10YI-1.8?
The AT25160AY1-10YI-1.8 supports up to 20 MHz SCK frequency at VCC = 5.0 V. At lower supply voltages (1.8V–3.6V), the maximum clock rate is reduced to 5 MHz per AC characteristics tables. This ensures timing margin compliance across the full 1.8V–5.5V operating range without requiring dynamic clock scaling in host firmware.
Does the AT25160AY1-10YI-1.8 support hardware write protection?
Yes, the AT25160AY1-10YI-1.8 supports hardware write protection via its WP pin when the WPEN bit in the status register is set to "1". When WP is pulled low under this condition, writes to the status register and block-protected memory segments are inhibited - providing fail-safe protection against unintended modifications during power-up or system faults.
What package type does the AT25160AY1-10YI-1.8 use?
The AT25160AY1-10YI-1.8 uses an 8-lead Miniature Array Package (MAP), designated as 8Y1, with dimensions 4.90 mm × 3.00 mm and non-leaded construction. It features dual footprint compatibility with JEDEC SOIC and TSSOP packages, simplifying layout migration and second-source options.
How many write cycles can the AT25160AY1-10YI-1.8 endure?
The AT25160AY1-10YI-1.8 is rated for 1,000,000 write cycles at 5.0 V and 25°C under page-write conditions. This endurance is maintained across its full operating temperature range (−40°C to +125°C), ensuring long-term reliability in applications requiring frequent parameter updates, such as adaptive control algorithms.
Is the AT25160AY1-10YI-1.8 qualified for automotive applications?
Yes, the AT25160AY1-10YI-1.8 is automotive-grade qualified per AEC-Q100 Grade 2 (−40°C to +125°C) and offered in lead-free/halogen-free packaging. It meets stringent reliability, thermal cycling, and long-term data retention requirements for engine control, body electronics, and ADAS subsystems.
AT25160AY1-10YI-1.8 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:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MAP (3x4.9)
AT25160AY1-10YI-1.8 FAQ
1.How can I place an order for AT25160AY1-10YI-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25160AY1-10YI-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 AT25160AY1-10YI-1.8 reliable?
The price and inventory of AT25160AY1-10YI-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 AT25160AY1-10YI-1.8 is usually 5 days.
3.What payment methods are accepted for AT25160AY1-10YI-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25160AY1-10YI-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25160AY1-10YI-1.8?
AT25160AY1-10YI-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25160AY1-10YI-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 AT25160AY1-10YI-1.8?
For technical support, including AT25160AY1-10YI-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25160AY1-10YI-1.8 requirements.
6.How does Aetrix verify that AT25160AY1-10YI-1.8 is sourced from the original manufacturer or authorized distributors?
All AT25160AY1-10YI-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 AT25160AY1-10YI-1.8 meets industry standards.
7.What is the process for return or replacement of AT25160AY1-10YI-1.8?
All AT25160AY1-10YI-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT25160AY1-10YI-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 AT25160AY1-10YI-1.8 part is unused and in its original packaging.
Return procedure for AT25160AY1-10YI-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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