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Microchip Technology AT93C46Y1-10YU-1.8
- Part No.:
- AT93C46Y1-10YU-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
AT93C46Y1-10YU-1.8.pdf
- Description:
- IC EEPROM 1KBIT 3-WIRE 2MHZ 8MAP
- Quantity:
- Payment:
- Shipping:
Inventory:2,503
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Product details
Overview
AT93C46Y1-10YU-1.8 from Microchip Technology (formerly Atmel) is a 1K-bit three-wire serial EEPROM with user-selectable 128 × 8 or 64 × 16 organization, operating from 1.8V to 5.5V supply, featuring 2 MHz clock rate at 5V, 10 ms max self-timed write cycle, and automotive-grade temperature range (−40°C to +85°C). It is used for configuration storage in embedded controllers, sensor calibration data retention, and boot parameter storage in space-constrained industrial modules.
For engineers reviewing the AT93C46Y1-10YU-1.8 datasheet, AT93C46Y1-10YU-1.8 pinout, AT93C46Y1-10YU-1.8 application, or AT93C46Y1-10YU-1.8 equivalent, key selection considerations include low-voltage operation down to 1.8V, ORG-pin configurable memory width, dBGA2™ package footprint compatibility, and 1 million write endurance for infrequent but critical updates.
Technical Context
The AT93C46Y1-10YU-1.8 implements a synchronous three-wire interface (CS/SK/DI/DO) with start-bit–driven instruction decoding and supports READ, WRITE, ERASE, EWEN, EWDS, ERAL, and WRAL commands. Its internal organization is selected via the ORG pin: logic high enables 64 × 16 mode; grounded enables 128 × 8 mode; unconnected defaults to x16 only on non-1.8V variants - thus ORG functionality is disabled on this 1.8V-rated part.
Write operations require prior EWEN execution and are self-timed (tWP ≤ 10 ms), with Ready/Busy status readable on DO after CS high assertion. The device features no separate erase cycle, supports full-array erase/write at VCC = 4.5–5.5V, and maintains data for 100 years with 1M endurance cycles under specified conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 × 8 or 64 × 16 organization) |
| Supply Voltage Range | 1.8V to 5.5V - enables direct interface with 1.8V I/O domains without level shifters |
| Max Clock Frequency | 2 MHz at 5V - sets maximum serial throughput at ~200 kbit/s for 8-bit reads |
| Write Cycle Time | ≤10 ms - defines minimum interval between successive writes; blocks host access during execution |
| Endurance | 1 million write/erase cycles - supports >27 years of daily reconfiguration (100 cycles/day) |
| Data Retention | 100 years at 25°C - ensures long-term reliability for firmware metadata and calibration constants |
| Operating Temperature | −40°C to +85°C - qualified for industrial and automotive under-hood environments |
Pinout & Package
AT93C46Y1-10YU-1.8 uses an 8-ball dBGA2™ package (1.5 mm × 2.0 mm, 0.5 mm pitch), optimized for ultra-compact PCB layouts and automated assembly. Pin mapping follows standard three-wire serial EEPROM topology with dedicated control and data lines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; must be held low for entire instruction sequence; determines device activation window |
| SK | Serial Clock | Synchronizes all data transfers; rising edge samples DI, falling edge outputs DO |
| DI | Data Input | Receives start bit, op code, address, and write data; latched on SK rising edge |
| DO | Data Output | Serially outputs read data or Ready/Busy status; high-impedance when CS high |
| VCC | Power Supply | 1.8–5.5V input; powers internal logic and charge pump for write operations |
| GND | Ground | Reference return path for all signals and internal circuitry |
| ORG | Organization Select | Not functional on 1.8V version - fixed x8/x16 configuration determined by factory mask option |
| DC | No Connect | Internally unused terminal; must be left floating or tied to GND per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Three-wire serial interface | Reduces MCU GPIO count and PCB routing complexity vs. SPI/I²C; compatible with legacy microcontrollers lacking dedicated peripherals |
| Self-timed write cycle | Eliminates need for external timing control or polling overhead - host asserts CS high to poll DO for completion |
| 1.8V operation support | Enables direct integration into battery-powered or ultra-low-power systems without voltage translation circuitry |
| Automotive-grade qualification | Meets extended temperature and reliability requirements for industrial control panels, telematics units, and motor control modules |
| Lead-free/halogen-free packaging | Complies with RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) |
Applications
| Industrial Sensor Calibration | Embedded Controller Configuration |
|---|---|
Use Scenario: Storing factory-trimmed offset/gain coefficients for analog front-end sensors in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile parameter store accessed during power-up initialization; read-only during runtime. Use Value: Enables single-batch calibration across production, eliminating manual trim pots and reducing BOM cost and field drift over 100-year retention. | Use Scenario: Holding boot-time configuration flags (e.g., UART baud rate, CAN node ID, watchdog timeout) in HVAC controller mainboards. IC Role / Device Role / Timing Role: Serial configuration memory interfaced directly to MCU GPIOs; accessed once per power cycle. Use Value: Supports field-upgradable settings without firmware reflashing; 1.8V compatibility allows direct connection to low-power ARM Cortex-M0+ I/O banks. |
| Automotive Body Control Module | Medical Diagnostic Instrument |
Use Scenario: Saving user preferences (lighting profiles, mirror positions) and fault log history in vehicle door modules. IC Role / Device Role / Timing Role: Low-energy persistent storage updated infrequently (<100 writes/year); accessed via discrete GPIO bit-banging. Use Value: Meets AEC-Q100 Grade 2 requirements; 1M endurance exceeds lifetime requirement of 10,000 write cycles for end-user settings. | Use Scenario: Archiving calibration certificates and transducer linearity correction tables in portable ultrasound probe interfaces. IC Role / Device Role / Timing Role: Tamper-resistant configuration vault; write-protected after initial commissioning using EWDS command. Use Value: Ensures regulatory compliance (IEC 62304) by guaranteeing data integrity across 100-year shelf life and 1M-cycle reliability under clinical usage patterns. |
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 SPI interface, 2.5–5.5V supply, 20 MHz clock, 5 ms write time | Higher density, faster interface, but requires SPI peripheral and additional CS line | Select when migrating to higher-capacity storage with MCU SPI support and layout space for extra trace |
| AT25128B-MAHL-T | 128 Kbit SPI interface, 1.8–5.5V, 20 MHz, 5 ms write, SOIC-8 package | Larger footprint, SPI protocol, same voltage range; lacks ORG flexibility but offers hardware write-protect pin | Prefer for drop-in replacement where board area permits SOIC-8 and hardware WP is required for safety-critical lockout |
Compared with M95128-WMN6TP and AT25128B-MAHL-T, the AT93C46Y1-10YU-1.8 provides minimal GPIO count, ultra-small dBGA2™ footprint, and guaranteed 1.8V operation - making it optimal for space- and power-constrained designs where 1K-bit capacity suffices and bit-banged three-wire is preferred over SPI.
Availability
AT93C46Y1-10YU-1.8 is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded controller configuration, and automotive body control module applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AT93C46Y1-10YU-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 Inc. is a leading provider of microcontroller, mixed-signal, analog, and Flash-IP solutions, acquired Atmel in 2016 and maintains full product support for legacy Atmel EEPROMs.
The AT93C46 series belongs to Microchip's legacy serial EEPROM portfolio designed for cost-sensitive, low-pin-count embedded systems requiring reliable nonvolatile storage with minimal interface overhead and wide voltage operation.
FAQ
What is the valid supply voltage range for AT93C46Y1-10YU-1.8?
The AT93C46Y1-10YU-1.8 operates from 1.8V to 5.5V. This 1.8V minimum enables direct interfacing with modern ultra-low-power MCUs and battery-backed systems without level-shifting circuitry. Operation below 1.8V is not guaranteed, and exceeding 5.5V may cause permanent damage per absolute maximum ratings.
Does AT93C46Y1-10YU-1.8 support ORG pin configuration for memory organization?
No - the ORG pin is not functional on the AT93C46Y1-10YU-1.8. Per the datasheet, ORG-based organization selection (x8 vs x16) is disabled on 1.8V versions of the AT93C46. Memory width is fixed at factory; users must verify the configured organization (128 × 8 or 64 × 16) from ordering code documentation or device marking.
What package type does AT93C46Y1-10YU-1.8 use, and what are its dimensions?
AT93C46Y1-10YU-1.8 uses an 8-ball dBGA2™ package measuring 1.5 mm × 2.0 mm with 0.5 mm ball pitch. This ultra-compact footprint supports high-density PCB layouts and automated placement. Ball assignments follow standard three-wire serial topology, with no thermal pad or exposed die attach.
How many write cycles can AT93C46Y1-10YU-1.8 endure, and what is its data retention period?
The AT93C46Y1-10YU-1.8 guarantees 1 million write/erase cycles and 100 years of data retention at 25°C. These values are characterized per JEDEC standards and apply across the full operating temperature range (−40°C to +85°C), with retention degrading predictably at elevated temperatures per Arrhenius modeling.
Is AT93C46Y1-10YU-1.8 suitable for automotive applications?
Yes - AT93C46Y1-10YU-1.8 is qualified for automotive-grade operation (−40°C to +85°C) and offered in lead-free/halogen-free packaging. While not AEC-Q200 certified as a standalone component, its specification and test flow align with automotive subsystem requirements for body electronics, infotainment, and ADAS auxiliary modules.
AT93C46Y1-10YU-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:
- 1Kbit
- Memory Organization:
- 128 x 8, 64 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)
AT93C46Y1-10YU-1.8 FAQ
1.How can I place an order for AT93C46Y1-10YU-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C46Y1-10YU-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 AT93C46Y1-10YU-1.8 reliable?
The price and inventory of AT93C46Y1-10YU-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 AT93C46Y1-10YU-1.8 is usually 5 days.
3.What payment methods are accepted for AT93C46Y1-10YU-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C46Y1-10YU-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C46Y1-10YU-1.8?
AT93C46Y1-10YU-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C46Y1-10YU-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 AT93C46Y1-10YU-1.8?
For technical support, including AT93C46Y1-10YU-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C46Y1-10YU-1.8 requirements.
6.How does Aetrix verify that AT93C46Y1-10YU-1.8 is sourced from the original manufacturer or authorized distributors?
All AT93C46Y1-10YU-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 AT93C46Y1-10YU-1.8 meets industry standards.
7.What is the process for return or replacement of AT93C46Y1-10YU-1.8?
All AT93C46Y1-10YU-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C46Y1-10YU-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 AT93C46Y1-10YU-1.8 part is unused and in its original packaging.
Return procedure for AT93C46Y1-10YU-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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