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Microchip Technology AT93C46Y1-10YI-1.8
- Part No.:
- AT93C46Y1-10YI-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
AT93C46Y1-10YI-1.8.pdf
- Description:
- IC EEPROM 1KBIT 3-WIRE 2MHZ 8MAP
- Quantity:
- Payment:
- Shipping:
Inventory:1,819
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Product details
Overview
AT93C46Y1-10YI-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, self-timed 10 ms max write cycle, and automotive-grade temperature range (−40°C to +85°C) in an 8-lead Miniature Array Package (MAP). It serves as nonvolatile configuration storage in microcontroller-based industrial control modules.
For engineers reviewing the AT93C46Y1-10YI-1.8 datasheet, AT93C46Y1-10YI-1.8 pinout, AT93C46Y1-10YI-1.8 application, or AT93C46Y1-10YI-1.8 equivalent, key selection criteria include low-voltage operation down to 1.8V, dual-word-width flexibility via ORG pin, 1 million write endurance, 100-year data retention, and lead-free/halogen-free 8Y1 MAP package compatibility with space-constrained PCB layouts.
Technical Context
The AT93C46Y1-10YI-1.8 implements a synchronous three-wire serial interface (CS, SK, DI/DO) with start-bit–driven instruction decoding. Its internal architecture supports two memory organizations selected by the ORG pin: 128 words × 8 bits (ORG = GND) or 64 words × 16 bits (ORG = VCC), with unconnected ORG defaulting to x16 mode only on 2.7V variants-not applicable to this 1.8V-rated device.
Write operations require explicit EWEN instruction prior to ERASE or WRITE; all programming is self-timed with DO pin reporting Ready/Busy status when CS is raised mid-cycle. The device lacks an erase-before-write requirement and supports full-array ERAL/WRAL instructions-valid only at VCC ≥ 4.5V, thus not active under typical 1.8V operation.
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 interfacing with 1.8V logic and mixed-voltage systems without level shifters |
| Max Clock Frequency | 2 MHz at 5V - sets maximum serial read/write throughput; reduced at lower VCC per AC specs |
| Write Cycle Time | 10 ms maximum - defines minimum time between successive write commands; no external delay needed |
| Endurance | 1 million write cycles - supports frequent field updates in calibration or logging applications |
| Data Retention | 100 years - ensures long-term reliability for firmware configuration storage across product lifetime |
| Operating Temperature | −40°C to +85°C - certified for industrial environments including motor drives and sensor nodes |
Pinout & Package
AT93C46Y1-10YI-1.8 is housed in an 8-lead Miniature Array Package (MAP), body size 4.90 mm × 3.00 mm, with exposed pad, lead-free/halogen-free finish, and dual footprint compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; must be held low for entire instruction sequence; high state places DO in high-impedance |
| SK | Serial Clock | Input-only; rising edge samples DI and shifts DO; timing governed by tSKH/tSKL min values |
| DI | Data Input | Serial instruction and address/data input; latched on SK rising edge; requires tDIS/tDIH setup/hold |
| DO | Data Output | Open-drain output; drives data during READ; reports Ready/Busy when CS high mid-cycle |
| VCC | Power Supply | 1.8V–5.5V supply; decoupling capacitor required near pin for noise immunity |
| GND | Ground | Reference for all I/O and internal circuitry; low-impedance connection critical for timing stability |
| ORG | Organization Select | Hardwired to VCC or GND to select x16 or x8 mode; not functional on 1.8V devices per datasheet note |
| DC | Don't Connect | No internal connection; must remain floating or tied to GND/VCC per layout guidelines; not usable as NC |
Key Features
| Feature | Design Value |
|---|---|
| User-selectable memory organization | Hardware-configurable 128×8 or 64×16 word structure via ORG pin - eliminates software rework when changing data width requirements |
| Three-wire serial interface | Minimal GPIO usage (CS/SK/DI/DO shared line) - reduces MCU pin count and simplifies routing on dense PCBs |
| Self-timed write cycle | No external timing control or polling overhead needed - simplifies firmware implementation and guarantees completion within 10 ms |
| Automotive-grade qualification | −40°C to +85°C operation with AEC-Q200 alignment - suitable for under-hood and industrial control applications |
| Lead-free/halogen-free packaging | 8Y1 MAP package compliant with RoHS and JEDEC MSL-3 - supports automated assembly and long-term environmental compliance |
Applications
| Industrial Sensor Calibration | Embedded System Configuration |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain coefficients for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile parameter storage accessed during power-up initialization; read-only during runtime. Use Value: Enables plug-and-play sensor replacement with zero recalibration; leverages 100-year retention and 1M endurance for infrequent but critical updates. | Use Scenario: Holding boot-time configuration flags (e.g., UART baud rate, display resolution, network MAC address) in medical diagnostic handhelds. IC Role / Device Role / Timing Role: Serial configuration ROM interfaced to MCU's GPIO bit-banged SPI peripheral. Use Value: Reduces BOM cost vs. flash-based alternatives; 1.8V operation matches ultra-low-power MCU core voltage. |
| Motor Drive Parameter Storage | IoT Edge Node Identity |
Use Scenario: Saving user-adjusted PID loop gains and thermal derating curves in brushless DC motor controllers. IC Role / Device Role / Timing Role: Write-once-during-commissioning, read-frequently storage element with guaranteed data integrity. Use Value: Supports field firmware updates without losing tuned parameters; 10 ms write time allows background saving during idle cycles. | Use Scenario: Securing unique device identifiers (e.g., cryptographic keys, BLE address) in battery-powered smart meters. IC Role / Device Role / Timing Role: Tamper-resistant identity vault accessed only during secure boot and OTA update verification. Use Value: Low standby current (0.1 µA at 1.8V) extends 10-year battery life; x16 organization stores 64-byte keys efficiently. |
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), SPI interface, 2.5–5.5V, 20 MHz clock, WLCSP package | Higher density, faster interface, smaller footprint - suited for designs needing >1K storage or higher throughput | Select when migrating to SPI-based platforms or requiring >10× capacity; not pin-compatible |
| AT25010B-SSHL-T | 1 Kbit, SPI interface, 1.8–5.5V, 10 MHz clock, 8-lead SOIC | Different protocol (SPI vs. Microwire), same voltage range and density - offers broader distributor availability | Choose for legacy SPI designs or where SOIC package is preferred over MAP; requires firmware interface change |
Compared with AT93C46Y1-10YI-1.8, M95128-WMN6TP delivers 128× more memory and 10× faster clock but uses SPI and WLCSP packaging, while AT25010B-SSHL-T retains 1K density and 1.8V support but mandates SPI driver adaptation and SOIC board space - neither is drop-in replaceable.
Availability
AT93C46Y1-10YI-1.8 is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded system configuration, motor drive parameter storage, and IoT edge node identity applications requiring stable component supply, automotive-grade reliability, and lead-free packaging.
Supply support for AT93C46Y1-10YI-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 components, and memory solutions, with a focus on embedded control and connectivity.
The AT93C46Y1-10YI-1.8 belongs to Microchip's legacy Microwire-compatible serial EEPROM product line, designed specifically for low-pin-count, low-power nonvolatile storage in resource-constrained industrial and automotive systems.
FAQ
What is the correct supply voltage range for AT93C46Y1-10YI-1.8?
The AT93C46Y1-10YI-1.8 operates from 1.8V to 5.5V, as indicated by the "-1.8" suffix in its ordering code. This distinguishes it from the -2.7 variant (2.7V–5.5V). Operation below 1.8V is not guaranteed, and exceeding 5.5V risks permanent damage per Absolute Maximum Ratings.
Does AT93C46Y1-10YI-1.8 support both 8-bit and 16-bit memory organization?
Yes, AT93C46Y1-10YI-1.8 supports user-selectable organization: 128 × 8 bits (ORG = GND) or 64 × 16 bits (ORG = VCC). However, the datasheet explicitly states the ORG pin feature is not available on 1.8V devices - meaning organization is fixed at power-up and cannot be dynamically switched on AT93C46Y1-10YI-1.8.
What package type does AT93C46Y1-10YI-1.8 use?
AT93C46Y1-10YI-1.8 uses the 8Y1 package: an 8-lead Miniature Array Package (MAP) with 4.90 mm × 3.00 mm body size, dual footprint compatibility, and lead-free/halogen-free finish. This is confirmed by the "Y1" in the part number and the Ordering Information table.
Is AT93C46Y1-10YI-1.8 suitable for automotive applications?
Yes, AT93C46Y1-10YI-1.8 is qualified for industrial temperature range (−40°C to +85°C) and labeled "Automotive Grade, Extended Temperature and Lead-Free/Halogen-Free" in the Features section. While not AEC-Q100 certified, its spec-grade testing and packaging meet common automotive subsystem requirements outside the engine compartment.
How many write cycles can AT93C46Y1-10YI-1.8 endure?
AT93C46Y1-10YI-1.8 guarantees 1 million write cycles per memory location, as specified in the Features section and Table 4 (Endurance). This endurance rating applies across the full operating temperature and voltage range, enabling robust field updates in maintenance and calibration workflows.
AT93C46Y1-10YI-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, 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)
AT93C46Y1-10YI-1.8 FAQ
1.How can I place an order for AT93C46Y1-10YI-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C46Y1-10YI-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 AT93C46Y1-10YI-1.8 reliable?
The price and inventory of AT93C46Y1-10YI-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 AT93C46Y1-10YI-1.8 is usually 5 days.
3.What payment methods are accepted for AT93C46Y1-10YI-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C46Y1-10YI-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C46Y1-10YI-1.8?
AT93C46Y1-10YI-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C46Y1-10YI-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 AT93C46Y1-10YI-1.8?
For technical support, including AT93C46Y1-10YI-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C46Y1-10YI-1.8 requirements.
6.How does Aetrix verify that AT93C46Y1-10YI-1.8 is sourced from the original manufacturer or authorized distributors?
All AT93C46Y1-10YI-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 AT93C46Y1-10YI-1.8 meets industry standards.
7.What is the process for return or replacement of AT93C46Y1-10YI-1.8?
All AT93C46Y1-10YI-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C46Y1-10YI-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 AT93C46Y1-10YI-1.8 part is unused and in its original packaging.
Return procedure for AT93C46Y1-10YI-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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