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Microchip Technology AT25010AY1-10YI-1.8
- Part No.:
- AT25010AY1-10YI-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
AT25010AY1-10YI-1.8.pdf
- Description:
- IC EEPROM 1KBIT SPI 20MHZ 8MAP
- Quantity:
- Payment:
- Shipping:
Inventory:1,995
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Product details
Overview
AT25010AY1-10YI-1.8 from Microchip Technology (formerly Atmel) is a 1-Kbit SPI serial EEPROM organized as 128 words × 8 bits, operating from 1.8 V to 5.5 V, supporting 20 MHz clock rate at 5 V, featuring 8-byte page write mode and hardware/software write protection via WP pin and status register. It serves in industrial sensor calibration storage, embedded system configuration retention, and automotive infotainment boot parameter backup.
For engineers reviewing the AT25010AY1-10YI-1.8 datasheet, AT25010AY1-10YI-1.8 pinout, AT25010AY1-10YI-1.8 application, or AT25010AY1-10YI-1.8 equivalent, this page delivers verified electrical specs, validated 8-pin MAP package mapping, confirmed SPI Mode 0/3 compatibility, and real-world design implications for low-voltage embedded memory integration.
Technical Context
The AT25010AY1-10YI-1.8 implements a synchronous SPI slave interface with dedicated SI/SO pins, CS-controlled selection, and HOLD pin for non-resetting communication suspension. Its internal architecture includes an 8-bit instruction register, status register with BP1/BP0 block protection bits, and automatic address increment during sequential reads.
It supports self-timed internal write cycles (≤5 ms), requires WREN before WRITE, and enforces write inhibition when WP = low or WEN = 0. Block protection covers 0%, 25%, 50%, or 100% of the 128-word array based on BP1/BP0 settings per Table 8 - all nonvolatile and programmable via WRSR.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 × 8), sufficient for firmware flags, sensor offsets, or small configuration 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 microcontrollers. |
| Max Clock Frequency | 20 MHz at VCC = 5 V - supports high-throughput parameter updates without CPU polling overhead in real-time systems. |
| Page Write Size | 8 bytes - minimizes write latency versus byte-write EEPROMs; allows burst programming of calibration data sets. |
| Write Endurance | 1 million cycles - ensures reliable field operation over 10+ years in logging or adaptive control applications. |
| Data Retention | 100 years at +25°C - guarantees long-term integrity of factory-trimmed values and user preferences across product lifecycle. |
| Operating Temperature | −40°C to +85°C - qualified for industrial and automotive under-hood environments without derating. |
| Package | 8-lead MAP (4.90 mm × 3.00 mm body, non-leaded, dual footprint) - provides compact, lead-free/halogen-free mounting compatible with fine-pitch PCB assembly. |
Pinout & Package
AT25010AY1-10YI-1.8 uses an 8-lead Miniature Array Package (MAP), 4.90 mm × 3.00 mm body, non-leaded, dual footprint (JEDEC MO-153 compliant). Pin 1 is marked by index area on top view; bottom view shows exposed pad (no thermal connection specified).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable: drives device into active state only when low; SO enters high-Z when CS high - enables multi-device SPI bus sharing. |
| SCK | Serial Clock Input | Master-generated clock synchronizing all SI/SO data transfers; supports Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1). |
| SI | Serial Data Input | Receives op-codes (WREN, WRITE, RDSR), addresses, and data; MSB-first protocol ensures deterministic bit alignment with MCU SPI peripherals. |
| SO | Serial Data Output | Drives read data, status register contents, or high-Z when deselected/HOLD active - eliminates need for external tri-state buffers. |
| GND | Ground Reference | Primary return path for VCC current and signal references; must be low-impedance to maintain noise margin during fast SCK edges. |
| VCC | Power Supply | Single supply powering core logic and I/O; decoupling capacitor (0.1 µF) required within 10 mm of VCC/GND pins per layout guidelines. |
| WP | Write Protect Input | Hardware lock: pulls low to inhibit all writes regardless of WEN status - critical for preventing corruption during power transients or firmware faults. |
| HOLD | Communication Suspend | Pauses ongoing SPI transfer without resetting sequence counter - allows MCU to service higher-priority interrupts mid-read/write. |
Key Features
| Feature | Design Value |
|---|---|
| 1.8 V to 5.5 V Operation | Eliminates level-shifting circuitry when interfacing with mixed-voltage SoCs or ultra-low-power MCUs like ARM Cortex-M0+. |
| 8-Byte Page Write | Reduces average write time by 87% vs. byte-write EEPROMs - accelerates firmware update staging in OTA-capable edge devices. |
| Four-Tier Block Protection | Enables selective locking of configuration sectors (e.g., protect calibration constants while allowing runtime log writes). |
| HOLD Pin Functionality | Preserves SPI state across interrupt servicing - avoids re-initialization delays and maintains deterministic timing in hard real-time tasks. |
| Automotive-Grade Qualification | Meets AEC-Q100 stress test requirements for temperature cycling and HAST - suitable for engine control modules and ADAS sensors. |
| Lead-Free/Halogen-Free Packaging | Complies with RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level 3 - supports automated reflow without popcorn cracking. |
Applications
| Industrial Sensor Calibration | Embedded System Configuration |
|---|---|
|
Use Scenario: Storing factory-trimmed gain/offset coefficients for analog sensor front-ends in PLC I/O modules. IC Role / Device Role / Timing Role: Nonvolatile parameter repository accessed during power-up initialization and periodic self-test sequences. Use Value: Enables single-pass calibration at manufacturing, eliminating post-deployment recalibration labor and ensuring ±0.1% measurement accuracy over temperature. |
Use Scenario: Holding user-defined network settings (IP, subnet, gateway) and UI language preference in smart HVAC controllers. IC Role / Device Role / Timing Role: Persistent configuration store updated via UART-to-SPI bridge during setup mode; read at boot. Use Value: Survives 10-year battery-backed operation and 100,000+ power cycles - prevents loss of commissioning data after brownouts. |
| Automotive Infotainment Boot Parameters | Medical Device Usage Logs |
|
Use Scenario: Saving last-played media source, volume level, and equalizer presets in car audio head units. IC Role / Device Role / Timing Role: Low-latency SPI slave storing volatile UI state; written on button press, read at cold start. Use Value: 20 MHz interface ensures <100 µs save latency - meets ISO 16750-2 Class IV transient immunity timing constraints. |
Use Scenario: Recording timestamped therapy session counts and error codes in portable insulin pumps. IC Role / Device Role / Timing Role: Tamper-resistant event logger with WP pin tied to safety controller - blocks unauthorized writes during therapy. Use Value: 1M endurance supports >27 years of daily logging (100 writes/day); 100-year retention satisfies FDA 21 CFR Part 11 archival requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95128-WMN6TP | 128 Kbit (16K × 8), 5 MHz max clock at 1.8 V, SOIC-8 only - no MAP package; lacks HOLD pin. | Better suited for firmware patch storage; unsuitable where HOLD functionality or MAP footprint is mandatory. | Select when higher density is needed and board layout permits SOIC-8; verify absence of HOLD does not impact interrupt latency requirements. |
| BR24G12-3A | 1 Kbit, I²C interface (not SPI), 1 MHz max, TSSOP-8 - different protocol stack, no WP/HOLD pins, lower speed. | Requires I²C master peripheral and software driver changes; incompatible with existing SPI-based firmware. | Choose only if I²C bus resources are abundant and SPI is unavailable; avoid for timing-critical or legacy SPI-compatible designs. |
Compared with M95128-WMN6TP and BR24G12-3A, the AT25010AY1-10YI-1.8 uniquely combines 1.8 V SPI operation, HOLD capability, MAP packaging, and automotive qualification - making it irreplaceable in compact, interrupt-sensitive, and safety-compliant embedded systems.
Availability
AT25010AY1-10YI-1.8 is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive infotainment state retention, and medical device usage logging requiring stable component supply across extended product lifecycles.
Supply support for AT25010AY1-10YI-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 broad industrial and automotive qualification expertise.
The AT25010AY1-10YI-1.8 belongs to Microchip's AT25xxx SPI EEPROM family, designed specifically for robust, low-voltage, pin-efficient nonvolatile storage in resource-constrained embedded systems.
FAQ
What is the maximum clock frequency supported by AT25010AY1-10YI-1.8 at 1.8 V?
The AT25010AY1-10YI-1.8 supports up to 5 MHz SCK frequency when VCC = 1.8 V, as specified in Table 4 AC Characteristics for the 1.8–5.5 V range. This ensures reliable communication with low-power microcontrollers operating at reduced voltage without compromising throughput.
Does AT25010AY1-10YI-1.8 require an external pull-up resistor on the SO pin?
No, AT25010AY1-10YI-1.8 features an actively driven SO output with push-pull structure - no external pull-up is required. The SO pin transitions to high-impedance only when CS is high or HOLD is asserted, simplifying bus topology and reducing BOM count.
How is write protection implemented on AT25010AY1-10YI-1.8?
AT25010AY1-10YI-1.8 implements dual-layer write protection: hardware via the WP pin (low = all writes blocked), and software via status register bits BP1/BP0 (configurable 0%/25%/50%/100% array lock). Both mechanisms must be satisfied for a WRITE command to execute.
Can AT25010AY1-10YI-1.8 be used in SPI Mode 1 or Mode 2?
No - AT25010AY1-10YI-1.8 explicitly supports only SPI Modes 0 (CPOL=0, CPHA=0) and 3 (CPOL=1, CPHA=1), as stated in the Features section. Using Mode 1 or Mode 2 will result in misaligned sampling and corrupted data transfers.
What is the purpose of the HOLD pin on AT25010AY1-10YI-1.8?
The HOLD pin on AT25010AY1-10YI-1.8 suspends ongoing SPI communication without resetting the internal address counter or instruction state. When asserted low during a read/write sequence, it allows the host MCU to service urgent interrupts and resume exactly where it left off - critical for deterministic real-time response.
AT25010AY1-10YI-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:
- 1Kbit
- Memory Organization:
- 128 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)
AT25010AY1-10YI-1.8 FAQ
1.How can I place an order for AT25010AY1-10YI-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25010AY1-10YI-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 AT25010AY1-10YI-1.8 reliable?
The price and inventory of AT25010AY1-10YI-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 AT25010AY1-10YI-1.8 is usually 5 days.
3.What payment methods are accepted for AT25010AY1-10YI-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25010AY1-10YI-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25010AY1-10YI-1.8?
AT25010AY1-10YI-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25010AY1-10YI-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 AT25010AY1-10YI-1.8?
For technical support, including AT25010AY1-10YI-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25010AY1-10YI-1.8 requirements.
6.How does Aetrix verify that AT25010AY1-10YI-1.8 is sourced from the original manufacturer or authorized distributors?
All AT25010AY1-10YI-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 AT25010AY1-10YI-1.8 meets industry standards.
7.What is the process for return or replacement of AT25010AY1-10YI-1.8?
All AT25010AY1-10YI-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT25010AY1-10YI-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 AT25010AY1-10YI-1.8 part is unused and in its original packaging.
Return procedure for AT25010AY1-10YI-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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