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Microchip Technology AT25160BY6-YH-T
- Part No.:
- AT25160BY6-YH-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
AT25160BY6-YH-T.pdf
- Description:
- IC EEPROM 16KBIT SPI 8MINI MAP
- Quantity:
- Payment:
- Shipping:
Inventory:4,475
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Product details
Overview
AT25160BY6-YH-T from Microchip Technology (formerly Atmel) is a 16-kbit SPI serial EEPROM organized as 2048 × 8-bit memory, featuring 1.8–5.5 V operation, 20 MHz max clock rate at 5 V, 32-byte page write capability, and hardware/software write protection via WP pin and status register. It serves as nonvolatile configuration storage in industrial control modules requiring low-voltage reliability and SPI interface compatibility with microcontrollers like the 68HC11.
For engineers reviewing the AT25160BY6-YH-T datasheet, AT25160BY6-YH-T pinout, AT25160BY6-YH-T application, or AT25160BY6-YH-T equivalent, key selection criteria include its MLP 2×3 mm (8Y6) package, NiPdAu lead finish, −40°C to +85°C industrial temperature range, block write protection granularity (1/4, 1/2, or full array), and self-timed 5 ms max write cycle.
Technical Context
The AT25160BY6-YH-T operates exclusively as an SPI slave device with separate SI (input) and SO (output) pins, supporting only SPI modes 0 (CPOL=0, CPHA=0) and 3 (CPOL=1, CPHA=1), though mode 0 is fully documented and validated. Its internal architecture includes an 8-bit instruction register, nonvolatile status register (BP0/BP1/WPEN bits), and automatic address increment during page writes.
Communication is initiated by CS low, followed by op-code transmission (e.g., WREN, WRITE, RDSR); all programming requires prior WREN execution, and the HOLD pin suspends ongoing transfers without resetting sequence state. Write cycles are fully self-timed with no external erase step needed, and RDY/BUSY status is monitored via bit 0 of the status register.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16,384 bits (2048 words × 8 bits), enabling storage of firmware parameters or calibration data in space-constrained designs |
| Supply Voltage Range | 1.8 V to 5.5 V - supports direct interfacing with 1.8 V, 3.3 V, and 5 V logic systems without level shifting |
| Max Clock Frequency | 20 MHz at VCC = 5.0 V - enables fast configuration loading in high-throughput industrial boot sequences |
| Page Write Size | 32 bytes - reduces write overhead versus byte-wise programming; limits burst write length to avoid address roll-over corruption |
| Write Endurance | 1 million cycles - ensures long-term reliability in applications with frequent parameter updates (e.g., energy meter tariff tables) |
| Data Retention | 100 years at +25°C - guarantees integrity of stored calibration coefficients or security keys over product lifetime |
| Operating Temperature | −40°C to +85°C - qualified for deployment in industrial PLCs, motor drives, and outdoor sensor nodes |
Pinout & Package
AT25160BY6-YH-T uses an 8-lead Ultra Thin Mini-MAP (MLP 2×3 mm, package code 8Y6), 0.50 mm pitch, dual no-lead DFN-style package with NiPdAu lead finish. 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 low to accept instructions; high-Z SO when CS high |
| SCK | Serial Clock Input | Master-generated clock; timing-critical for setup/hold compliance per AC specs (e.g., tSU ≥ 5 ns at 1.8 V) |
| SI | Serial Data Input | Receives op-codes, addresses, and data; ignored during HOLD or write cycle |
| SO | Serial Data Output | Tri-state output delivering read data or status bits; transitions to high-Z when CS high or HOLD active |
| GND | Ground Reference | Primary return path for VCC and I/O; requires low-impedance PCB connection to minimize noise coupling |
| VCC | Power Supply | Single supply input (1.8–5.5 V); decoupling capacitor (0.1 µF) required near pin per layout guidelines |
| WP | Write Protect | Hardware lock for status register and protected memory blocks when WPEN = 1 and WP = low |
| HOLD | Communication Suspend | Pauses ongoing SPI transfer without resetting internal address counter; requires SCK low to assert |
Key Features
| Feature | Design Value |
|---|---|
| SPI Mode 0 & 3 Support | Enables interoperability with diverse MCU families including 68HC11 and modern ARM Cortex-M SPI peripherals |
| Block Write Protection | Configurable 1/4, 1/2, or full memory array lock via BP0/BP1 bits - prevents accidental overwrite of critical boot sectors |
| Hardware + Software Write Protection | WP pin + WRSR instruction allow layered security: hardware lock for field updates, software lock for factory programming |
| Self-timed Write Cycle | Eliminates need for external timing control or polling delay; 5 ms max duration simplifies host firmware implementation |
| Industrial Temp Range | −40°C to +85°C operation verified across voltage range - suitable for uncontrolled environments like factory floors |
Applications
| Industrial PLC Configuration Storage | Smart Meter Firmware Parameter Backup |
|---|---|
|
Use Scenario: Storing I/O mapping tables, PID tuning constants, and communication protocol settings in programmable logic controllers deployed in manufacturing lines. IC Role / Device Role / Timing Role: Nonvolatile configuration memory accessed via SPI during power-up and runtime reconfiguration; RDY/BUSY flag synchronizes host reads/writes. Use Value: Ensures deterministic startup behavior and retains calibrated values across 10+ year service life without battery backup. |
Use Scenario: Holding tariff schedules, metering calibration offsets, and security keys in ANSI C12.22-compliant electricity meters operating in outdoor enclosures. IC Role / Device Role / Timing Role: SPI EEPROM providing tamper-resistant storage for regulatory-critical data; WP pin physically tied to secure ground plane. Use Value: Meets 100-year data retention requirement for utility-grade metering while supporting field firmware updates via protected page writes. |
| Medical Diagnostic Device Calibration | Automotive Body Control Module Settings |
|
Use Scenario: Saving sensor gain/offset coefficients and diagnostic fault logs in portable ultrasound or ECG units subject to repeated sterilization cycles. IC Role / Device Role / Timing Role: Low-power (0.1 µA standby at 1.8 V) serial memory storing calibration data accessed during pre-use self-test sequences. Use Value: Maintains traceable calibration history across device lifecycle without volatile RAM backup or supercapacitors. |
Use Scenario: Storing seat position presets, mirror angles, and lighting profiles in automotive body control modules (BCM) compliant with AEC-Q200 stress testing. IC Role / Device Role / Timing Role: Industrial-temp EEPROM interfaced to BCM MCU via dedicated SPI bus; HOLD pin used during CAN interrupt servicing. Use Value: Enables user-customizable settings persistence through vehicle battery disconnects and thermal cycling from −40°C to +85°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95160-DWDW | 16-kbit SPI EEPROM, 2.5–5.5 V supply, 10 MHz max clock, SOIC-8 package (8S1), no HOLD pin | Lacks HOLD functionality and industrial temp grade; rated −40°C to +85°C but not AEC-Q200 qualified | Select when board layout uses SOIC-8 and HOLD is unused; verify timing margins at lower clock rate |
| BR24G16NUX-10 | 16-kbit I²C EEPROM, 1.7–5.5 V, 400 kHz/1 MHz, 2×3 mm DFN (same footprint as 8Y6), built-in write protect | I²C interface requires different MCU peripheral and pull-up design; no WP/HOLD pin-level control | Choose for I²C-based systems needing identical MLP 2×3 mm footprint; confirm MCU I²C master availability |
Compared with M95160-DWDW and BR24G16NUX-10, the AT25160BY6-YH-T uniquely combines SPI mode flexibility, HOLD pin for interrupt-safe operation, and MLP 2×3 mm packaging optimized for high-density industrial PCBs - making it preferred where deterministic timing and minimal board area are critical.
Availability
AT25160BY6-YH-T is available at Aetrix Electronics and suitable for industrial control systems, smart metering platforms, and medical diagnostics equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AT25160BY6-YH-T 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 maintains full support for the legacy AT25xxxB EEPROM family, offering robust qualification, long-term documentation, and global distribution.
The AT25160BY6-YH-T belongs to Microchip's serial SPI EEPROM product line, designed specifically for reliable, low-power nonvolatile storage in industrial, medical, and infrastructure applications demanding extended data retention and wide voltage operation.
FAQ
What is the package type and lead finish of the AT25160BY6-YH-T?
The AT25160BY6-YH-T uses an 8-lead Ultra Thin Mini-MAP (MLP 2×3 mm, JEDEC MO-229 compliant) package with NiPdAu lead finish. This DFN-style package measures 2.00 mm × 3.00 mm with 0.50 mm pitch, optimized for high-density PCB layouts and RoHS-compliant assembly processes. The NiPdAu finish ensures superior solderability and wire-bond compatibility.
Does the AT25160BY6-YH-T support both SPI Mode 0 and Mode 3 in practice?
The AT25160BY6-YH-T datasheet explicitly states support for SPI Modes 0 (CPOL=0, CPHA=0) and 3 (CPOL=1, CPHA=1), but only Mode 0 operation is fully characterized and tested. While Mode 3 may function in some systems, Microchip recommends using Mode 0 for guaranteed timing compliance, especially under worst-case voltage and temperature conditions.
How does block write protection work on the AT25160BY6-YH-T?
The AT25160BY6-YH-T implements block write protection via two nonvolatile status register bits (BP1, BP0), allowing selection of four protection levels: none, lower 1/4 (0600–07FFh), lower 1/2 (0400–07FFh), or full array (0000–07FFh). Protection is enforced during WRITE and WRSR instructions when WPEN=1 and WP pin is low, preventing modification of protected regions without first disabling hardware protection.
What is the maximum write speed and endurance rating of the AT25160BY6-YH-T?
The AT25160BY6-YH-T supports up to 20 MHz SPI clock frequency at 5.0 V, enabling fast page writes (32 bytes in ~5 ms). Its endurance is rated at 1 million write cycles per memory location, verified at 3.3 V and +25°C. This ensures reliable operation in applications with daily parameter updates over a decade-long service life.
Can the AT25160BY6-YH-T operate reliably at 1.8 V supply voltage?
Yes, the AT25160BY6-YH-T is fully specified for 1.8 V to 5.5 V operation. At 1.8 V, it supports up to 5 MHz clock frequency, maintains 0.1 µA standby current (ISB1), and guarantees all DC and AC parameters across −40°C to +85°C. This makes it suitable for battery-powered or ultra-low-power industrial sensors where supply headroom is constrained.
AT25160BY6-YH-T 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:
- 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-Mini Map (2x3)
AT25160BY6-YH-T FAQ
1.How can I place an order for AT25160BY6-YH-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25160BY6-YH-T 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 AT25160BY6-YH-T reliable?
The price and inventory of AT25160BY6-YH-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25160BY6-YH-T is usually 5 days.
3.What payment methods are accepted for AT25160BY6-YH-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25160BY6-YH-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25160BY6-YH-T?
AT25160BY6-YH-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25160BY6-YH-T 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 AT25160BY6-YH-T?
For technical support, including AT25160BY6-YH-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25160BY6-YH-T requirements.
6.How does Aetrix verify that AT25160BY6-YH-T is sourced from the original manufacturer or authorized distributors?
All AT25160BY6-YH-T 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 AT25160BY6-YH-T meets industry standards.
7.What is the process for return or replacement of AT25160BY6-YH-T?
All AT25160BY6-YH-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25160BY6-YH-T, 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 AT25160BY6-YH-T part is unused and in its original packaging.
Return procedure for AT25160BY6-YH-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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