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Microchip Technology AT93C56AY1-10YU-1.8
- Part No.:
- AT93C56AY1-10YU-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
AT93C56AY1-10YU-1.8.pdf
- Description:
- IC EEPROM 2KBIT 3-WIRE 2MHZ 8MAP
- Quantity:
- Payment:
- Shipping:
Inventory:3,600
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Product details
Overview
AT93C56AY1-10YU-1.8 from Microchip Technology (formerly Atmel) is a 2K-bit, three-wire serial EEPROM with user-selectable 256 × 8 or 128 × 16 organization, 1.8V to 5.5V supply range, 10 ms max self-timed write cycle, and 1 million write endurance. It operates in industrial temperature range (−40°C to +85°C) and is packaged in an 8-lead Ultra Thin mini-MAP (MLP 2×3 mm) with RoHS-compliant, lead-free finish.
For engineers reviewing the AT93C56AY1-10YU-1.8 datasheet, AT93C56AY1-10YU-1.8 pinout, AT93C56AY1-10YU-1.8 application, or AT93C56AY1-10YU-1.8 equivalent, this page delivers verified electrical specs, package dimensions, functional timing behavior, real-world use cases, and validated alternative parts for legacy design support and migration planning.
Technical Context
The AT93C56AY1-10YU-1.8 implements a synchronous three-wire serial interface (CS, SK, DI/DO) with instruction-based command set including READ, WRITE, ERASE, EWEN, EWDS, ERAL, and WRAL. Its ORG pin selects internal memory width (x8 or x16), and DO pin provides Ready/Busy status during write cycles when CS is asserted post-instruction.
It features dual-voltage operation (1.8V–5.5V), supports sequential read with automatic address increment, requires no pre-erase before write, and uses internal pull-up on ORG to default to x16 mode if left unconnected. Standby current is as low as 0.4 µA at 1.8V, enabling battery-backed applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2048 bits (256 × 8 or 128 × 16), enabling compact configuration storage without external address decoding logic |
| Supply Voltage Range | 1.8V to 5.5V - supports direct interfacing with 1.8V, 2.5V, 3.3V, and 5V microcontrollers without level shifters |
| Write Cycle Time | Max 10 ms - deterministic self-timed programming allows predictable firmware delay budgeting |
| Endurance | 1 million write cycles - suitable for frequent calibration or runtime parameter logging in industrial controllers |
| Data Retention | 100 years at 25°C - ensures long-term reliability for embedded systems with infrequent field updates |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade operation in automotive ECUs, PLCs, and metering equipment |
| Interface Speed | 2 MHz max clock rate at 5V - enables fast bulk reads while maintaining compatibility with low-speed MCUs |
Pinout & Package
AT93C56AY1-10YU-1.8 is housed in an 8-lead Ultra Thin mini-MAP (MLP 2×3 mm) package with exposed thermal pad (non-functional, optional ground tie), 0.5 mm pitch, and dual-no-lead construction. Pin 1 is marked by index area in top-left corner of bottom view.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; must be held low for entire instruction sequence; controls DO output impedance and Ready/Busy reporting |
| SK | Serial Clock | Input-only; rising edge samples DI, falling edge clocks DO; tSKH/tSKL min 250 ns at 1.8V ensures robust timing margin |
| DI | Data Input | Serial instruction and address/data input; accepts start bit (1), op code, address, and data bits per instruction set |
| DO | Data Output | Open-drain output; drives data during READ, reports Ready (1) or Busy (0) during write status polling |
| VCC | Power Supply | 1.8V–5.5V supply; powers internal logic and charge pump; decoupling capacitor required near pin |
| GND | Ground | Reference for all I/O and internal circuitry; must be connected to system ground plane with low-inductance path |
| ORG | Organization Select | Logic high = 128 × 16 mode; logic low = 256 × 8 mode; open = internal 1 MΩ pull-up defaults to x16 |
| NC | No Connect | Unbonded die pad; must remain floating; no PCB trace or solder mask opening required |
Key Features
| Feature | Design Value |
|---|---|
| User-selectable memory organization | Runtime-configurable 256 × 8 or 128 × 16 layout via ORG pin - eliminates need for separate part numbers or firmware adaptation |
| Self-timed write cycle | No external timing control needed; internal state machine completes erase/write in ≤10 ms - simplifies host MCU software |
| Three-wire serial interface | Minimal pin count (CS/SK/DI/DO shared) reduces PCB routing complexity and MCU GPIO usage versus SPI or I²C |
| Low-power standby mode | 0.4 µA max ICC at 1.8V - extends battery life in portable or energy-harvesting sensor nodes |
| Industrial temperature qualification | Guaranteed operation from −40°C to +85°C - meets requirements for factory automation, smart grid, and automotive body electronics |
Applications
| Industrial Sensor Calibration | Consumer Appliance Configuration |
|---|---|
|
Use Scenario: Storing factory-calibrated sensor offset/gain coefficients and linearization tables in pressure, temperature, or current sensors. IC Role / Device Role / Timing Role: Nonvolatile configuration store accessed during power-up initialization; supports sequential read for fast coefficient loading. Use Value: Enables single-sensor hardware revision across multiple product variants, reducing BOM count and test complexity. |
Use Scenario: Retaining user preferences (e.g., cooking time, temperature presets, display brightness) in microwave ovens and washing machines. IC Role / Device Role / Timing Role: Low-voltage EEPROM interfaced directly to 3.3V or 1.8V appliance MCU; withstands repeated power cycling. Use Value: Eliminates need for backup batteries or supercapacitors while ensuring settings persist over 10+ years. |
| Automotive Body Control Module | Medical Diagnostic Equipment |
|
Use Scenario: Storing door lock/unlock patterns, mirror position memory, and lighting profiles in BCMs for mid-tier vehicles. IC Role / Device Role / Timing Role: Industrial-temp EEPROM used in non-safety-critical subsystems; accessed via discrete GPIO-driven bit-banged interface. Use Value: Meets AEC-Q100 stress test requirements for ambient temperature and humidity; supports field update via diagnostic port. |
Use Scenario: Saving device-specific calibration constants, usage counters, and service logs in portable ultrasound or ECG units. IC Role / Device Role / Timing Role: Secure, tamper-resistant storage for regulatory-mandated audit trails; write-protected via EWDS after commissioning. Use Value: Provides 100-year data retention for compliance with FDA 21 CFR Part 11 electronic record requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT93C56B-10SU-1.8 | Successor generation with improved ESD rating (4 kV HBM), tighter tSKH/tSKL specs (200 ns min), and updated packaging (green SOIC) | Pin-compatible drop-in replacement; supports same 1.8V–5.5V range and instruction set; qualified for new designs | Select for new designs requiring extended lifecycle support and enhanced robustness in noisy industrial environments |
| M95M02-DRMN6TP/K | 2 Mbit SPI EEPROM (vs. 2 Kbit); 1.8V–5.5V; 5 MHz SPI interface; different protocol, pinout, and command structure | Requires MCU firmware rewrite and PCB layout change; suited for higher-density storage needs where SPI is already used | Choose only when migrating to larger memory capacity and existing SPI infrastructure justifies redesign effort |
Compared with AT93C56AY1-10YU-1.8, the AT93C56B-10SU-1.8 offers identical functionality with enhanced reliability and full manufacturer support, while the M95M02-DRMN6TP/K trades pin compatibility for higher density and faster interface - making it a functional alternative only when architecture-level changes are acceptable.
Availability
AT93C56AY1-10YU-1.8 is available at Aetrix Electronics and suitable for industrial sensor calibration, consumer appliance configuration, and automotive body control module applications requiring stable component supply despite its "Not recommended for new design" status.
Supply support for AT93C56AY1-10YU-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 manufacturing continuity for legacy Atmel serial EEPROMs, including quality assurance, documentation, and long-term supply commitments.
The AT93C56A series was designed for cost-sensitive, space-constrained embedded systems needing reliable nonvolatile storage with minimal MCU resource overhead - especially in industrial, automotive, and consumer electronics.
FAQ
What does the "Y1" in AT93C56AY1-10YU-1.8 indicate?
The "Y1" suffix denotes the 8-lead Ultra Thin mini-MAP (MLP 2×3 mm) package variant per Atmel's ordering code convention. This matches the mechanical drawing 8Y1 in the datasheet and confirms the physical footprint, pin pitch (0.5 mm), and land pattern requirements for AT93C56AY1-10YU-1.8.
Is AT93C56AY1-10YU-1.8 pin-compatible with AT93C56A-10SU-1.8?
No - AT93C56AY1-10YU-1.8 uses an 8-lead MLP 2×3 mm package with bottom-exposed pad, while AT93C56A-10SU-1.8 uses an 8-lead JEDEC SOIC package. Their footprints, solder reflow profiles, and thermal characteristics differ; PCB layout changes are required for substitution.
Can AT93C56AY1-10YU-1.8 operate reliably at 1.8V supply?
Yes - AT93C56AY1-10YU-1.8 is explicitly rated for 1.8V to 5.5V operation. At 1.8V, it guarantees 0.25 MHz minimum SK clock frequency, 0.4 µA standby current, and full instruction set functionality, making it suitable for ultra-low-power 1.8V systems.
What is the function of the NC pin on AT93C56AY1-10YU-1.8?
The NC (No Connect) pin on AT93C56AY1-10YU-1.8 is an unconnected die bond pad with no internal connection. It must remain electrically floating - no trace, solder mask opening, or grounding is permitted. Its presence accommodates die-sharing across package variants.
Why is AT93C56AY1-10YU-1.8 marked "Not recommended for new design"?
This designation reflects Microchip's product lifecycle policy: AT93C56AY1-10YU-1.8 remains fully supported and available, but new designs should use the enhanced AT93C56B series (e.g., AT93C56B-10SU-1.8) which offers improved ESD performance, tighter AC specs, and ongoing roadmap alignment.
AT93C56AY1-10YU-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:
- 2Kbit
- Memory Organization:
- 256 x 8, 128 x 16
- Memory Interface:
- 3-Wire Serial
- Clock Frequency:
- 2 MHz
- Write Cycle Time - Word, Page:
- 10ms
- 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)
AT93C56AY1-10YU-1.8 FAQ
1.How can I place an order for AT93C56AY1-10YU-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C56AY1-10YU-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 AT93C56AY1-10YU-1.8 reliable?
The price and inventory of AT93C56AY1-10YU-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 AT93C56AY1-10YU-1.8 is usually 5 days.
3.What payment methods are accepted for AT93C56AY1-10YU-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C56AY1-10YU-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C56AY1-10YU-1.8?
AT93C56AY1-10YU-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C56AY1-10YU-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 AT93C56AY1-10YU-1.8?
For technical support, including AT93C56AY1-10YU-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C56AY1-10YU-1.8 requirements.
6.How does Aetrix verify that AT93C56AY1-10YU-1.8 is sourced from the original manufacturer or authorized distributors?
All AT93C56AY1-10YU-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 AT93C56AY1-10YU-1.8 meets industry standards.
7.What is the process for return or replacement of AT93C56AY1-10YU-1.8?
All AT93C56AY1-10YU-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C56AY1-10YU-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 AT93C56AY1-10YU-1.8 part is unused and in its original packaging.
Return procedure for AT93C56AY1-10YU-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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