My Inquiry
My Account
Microchip Technology AT25160AY1-10YU-1.8
- Part No.:
- AT25160AY1-10YU-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
AT25160AY1-10YU-1.8.pdf
- Description:
- IC EEPROM 16KBIT SPI 20MHZ 8MAP
- Quantity:
- Payment:
- Shipping:
Inventory:2,375
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT25160AY1-10YU-1.8 from Microchip Technology (formerly Atmel) is a 16-Kbit SPI serial EEPROM organized as 2048 × 8 bits, supporting 1.8 V to 5.5 V operation with 20 MHz clock rate at 5 V, 32-byte page write capability, and hardware/software write protection. It serves as nonvolatile configuration storage in industrial controllers, automotive body modules, and IoT sensor nodes requiring low-voltage reliability.
For engineers reviewing the AT25160AY1-10YU-1.8 datasheet, AT25160AY1-10YU-1.8 pinout, AT25160AY1-10YU-1.8 application, or AT25160AY1-10YU-1.8 equivalent, key selection criteria include 1.8 V minimum supply, 5 ms max write cycle time, block write protection granularity (1/4, 1/2, or full array), HOLD pin suspend functionality, and compatibility with SPI Modes 0 and 3.
Technical Context
The AT25160AY1-10YU-1.8 operates as a slave device on a three-wire SPI bus (CS, SCK, SI/SO), using MSB-first transmission and op-code–driven command protocol. Its internal architecture includes an 8-bit instruction register, nonvolatile status register with BP0/BP1/WPEN bits, and automatic address incrementing during page writes.
It implements dual-layer data protection: hardware-level via the WP pin (when WPEN = 1) and software-level via WRSR-configurable block protection and WREN/WRDI instructions. The HOLD pin enables mid-transaction suspension without resetting the serial sequence, maintaining state across master pauses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 words × 8 bits); sufficient for firmware patch storage or multi-parameter calibration tables in space-constrained designs. |
| 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 systems without level shifters. |
| Max Clock Frequency | 20 MHz at VCC = 5 V; supports high-throughput configuration loading in real-time control loops. |
| Page Write Size | 32 bytes; minimizes write latency versus byte-write EEPROMs and reduces host MCU overhead during bulk updates. |
| Write Cycle Time | 5 ms maximum; deterministic programming duration simplifies timing-critical firmware sequencing and timeout handling. |
| Endurance & Retention | 1 million write cycles and 100-year data retention; validated for long-life deployment in unattended infrastructure equipment. |
| Operating Temperature | –40 °C to +85 °C; qualified for industrial and automotive under-hood applications per AEC-Q100 stress requirements. |
Pinout & Package
AT25160AY1-10YU-1.8 uses an 8-lead Miniature Array Package (MAP) with 4.90 mm × 3.00 mm body, lead-free/RoHS-compliant construction, and dual footprint compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; must be held low for entire SPI transaction; deassertion terminates communication and places SO in high-impedance state. |
| SCK | Serial Clock | Input-only clock signal; defines timing for SI sampling and SO output; supports SPI Modes 0 and 3 (CPOL/CPHA combinations). |
| SI | Serial Data Input | MOSI line for op-codes, addresses, and write data; ignored during HOLD assertion or when CS is high. |
| SO | Serial Data Output | MISO line for read data and status register contents; tri-stated when CS is high or HOLD is active. |
| GND | Ground Reference | Primary return path for VCC and I/O signals; requires low-impedance connection to system ground plane. |
| VCC | Power Supply | Single supply input; powers internal logic and memory array; bypass capacitor (0.1 µF) required near package pin. |
| WP | Write Protect | Hardware lock for status register and protected memory blocks when WPEN = 1; tied high for normal operation. |
| HOLD | Communication Suspend | Pauses ongoing SPI transfer without resetting internal address counter; allows master to service higher-priority interrupts. |
Key Features
| Feature | Design Value |
|---|---|
| SPI Mode 0 & 3 Support | Interoperates with legacy 68HC11 microcontrollers (Mode 0) and modern ARM-based SoCs (Mode 3), eliminating interface translation logic. |
| Block Write Protection | Configurable via status register to protect 0%, 25%, 50%, or 100% of memory-enabling secure storage of bootloader code while allowing runtime parameter updates. |
| Self-timed Write Cycle | No external delay or polling required beyond RDSR READY/BUSY bit check; simplifies firmware driver development and reduces CPU utilization. |
| HOLD Pin Functionality | Enables deterministic pause/resume of multi-byte reads or writes, critical for deterministic real-time systems where SPI traffic must yield to safety-critical interrupts. |
| 1.8 V Operation | Valid down to 1.8 V supply ensures compatibility with ultra-low-power MCUs (e.g., ARM Cortex-M0+) and battery-backed systems without voltage boosting. |
Applications
| Industrial PLC I/O Module | Automotive Body Control Unit |
|---|---|
Use Scenario: Storing calibrated sensor offsets and actuator dead-band settings in programmable logic controller expansion modules operating in factory-floor environments. IC Role / Device Role / Timing Role: Nonvolatile configuration storage with guaranteed write integrity during brown-out events and EMI-rich industrial noise. Use Value: Enables field recalibration without firmware reflash; 1.8 V operation supports direct connection to 3.3 V FPGA I/O banks with no level-shifting components. | Use Scenario: Holding door lock actuation history, mirror position presets, and lighting dimming profiles in automotive body electronics modules. IC Role / Device Role / Timing Role: Secure, tamper-resistant parameter storage with hardware write protection preventing unauthorized modification of safety-critical settings. Use Value: WP pin hardwiring prevents accidental overwrites during CAN bus firmware updates; 100-year retention ensures lifetime data persistence across vehicle ownership. |
| Medical Infusion Pump | Smart Energy Meter |
Use Scenario: Recording dose delivery logs, calibration constants, and user-defined therapy profiles in Class II medical devices requiring regulatory traceability. IC Role / Device Role / Timing Role: Audit-trail EEPROM with deterministic 5 ms write cycles enabling timestamped event logging synchronized to real-time clock interrupts. Use Value: Page write mode reduces flash wear versus discrete byte writes; endurance rating exceeds 10× typical product lifecycle requirements. | Use Scenario: Storing tariff schedules, metering calibration coefficients, and tamper-detection event counters in ANSI C12.20–compliant utility meters. IC Role / Device Role / Timing Role: High-reliability data logger with HOLD pin support for seamless interruption during power-fail detection sequences. Use Value: –40 °C to +85 °C rating ensures operation inside outdoor meter enclosures; RoHS/lead-free packaging meets global environmental compliance mandates. |
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 | STMicroelectronics 16 Kbit SPI EEPROM; identical 1.8–5.5 V range and 20 MHz speed, but uses standard SOIC-8 (8S1) instead of MAP (8Y1) package. | Requires PCB layout change due to different footprint; lacks HOLD pin functionality, limiting use in interrupt-driven real-time systems. | Select when SOIC-8 compatibility is prioritized over suspend capability and board space is not constrained. |
| BR24G16FJ-3GE2 | Rohm 16 Kbit SPI EEPROM; supports 1.6–5.5 V range and 10 MHz max speed at 1.8 V, packaged in 8-pin TSSOP (8A2) with built-in error correction. | Lower speed limits throughput in high-frequency logging; ECC adds robustness against bit flips but increases write latency by ~10%. | Select when enhanced radiation tolerance or extended low-voltage margin (1.6 V) is required over raw performance. |
Compared with M95160-DRMN6TP/K and BR24G16FJ-3GE2, the AT25160AY1-10YU-1.8 offers unique HOLD pin suspend capability and MAP package miniaturization, making it optimal for space-constrained, interrupt-sensitive embedded systems where deterministic SPI transaction control is essential.
Availability
AT25160AY1-10YU-1.8 is available at Aetrix Electronics and suitable for industrial automation, automotive subsystems, and medical device manufacturing requiring stable component supply and long-term obsolescence management.
Supply support for AT25160AY1-10YU-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 acquired Atmel in 2016 and maintains full technical and supply chain support for legacy Atmel serial EEPROM products.
The AT25xxxA family was designed specifically for robust, low-voltage SPI-based configuration and calibration storage in industrial and automotive applications demanding high endurance and wide temperature operation.
FAQ
What is the maximum clock frequency supported by the AT25160AY1-10YU-1.8 at 1.8 V supply?
The AT25160AY1-10YU-1.8 supports up to 5 MHz SCK frequency when operated at 1.8 V, as specified in Table 1-3 AC Characteristics. This is lower than its 20 MHz rating at 5 V, reflecting reduced internal timing margins at minimum supply voltage. Designers must configure their SPI master accordingly to avoid setup/hold violations.
Does the AT25160AY1-10YU-1.8 support SPI Mode 1 or Mode 2?
No, the AT25160AY1-10YU-1.8 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 result in incorrect data sampling due to mismatched clock polarity and phase alignment with the device's internal timing requirements.
How does the HOLD pin function during an active write cycle?
The HOLD pin has no effect during an internal write cycle (tWC); once the CS rising edge initiates programming, the device ignores HOLD until the write completes. However, HOLD can suspend read operations or command transmission before CS deassertion, preserving the current address pointer and allowing safe resumption after interrupt servicing.
What happens if more than 32 bytes are written in a single page write sequence to the AT25160AY1-10YU-1.8?
If more than 32 bytes are transmitted in one WRITE instruction, the internal address counter rolls over within the current page boundary (e.g., from address 0x001F back to 0x0000), causing previously written data in that page to be overwritten. The device does not auto-advance to the next page-explicit multi-page addressing is required for larger updates.
Is the AT25160AY1-10YU-1.8 pin-compatible with other packages in the AT25160A family?
No-while all AT25160A variants share identical electrical functionality and pin functions, the AT25160AY1-10YU-1.8 uses the 8Y1 MAP package (4.90 mm × 3.00 mm), which has different mechanical dimensions and land pattern than PDIP (8P3), SOIC (8S1), TSSOP (8A2), or ULLGA (8D3) variants. PCB layout must match the specific 8Y1 footprint.
AT25160AY1-10YU-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)
AT25160AY1-10YU-1.8 FAQ
1.How can I place an order for AT25160AY1-10YU-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25160AY1-10YU-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 AT25160AY1-10YU-1.8 reliable?
The price and inventory of AT25160AY1-10YU-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 AT25160AY1-10YU-1.8 is usually 5 days.
3.What payment methods are accepted for AT25160AY1-10YU-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25160AY1-10YU-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25160AY1-10YU-1.8?
AT25160AY1-10YU-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25160AY1-10YU-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 AT25160AY1-10YU-1.8?
For technical support, including AT25160AY1-10YU-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25160AY1-10YU-1.8 requirements.
6.How does Aetrix verify that AT25160AY1-10YU-1.8 is sourced from the original manufacturer or authorized distributors?
All AT25160AY1-10YU-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 AT25160AY1-10YU-1.8 meets industry standards.
7.What is the process for return or replacement of AT25160AY1-10YU-1.8?
All AT25160AY1-10YU-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT25160AY1-10YU-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 AT25160AY1-10YU-1.8 part is unused and in its original packaging.
Return procedure for AT25160AY1-10YU-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT25160AY1-10YU-1.8 Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
