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Microchip Technology AT93C46DY6-YH-T
- Part No.:
- AT93C46DY6-YH-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
AT93C46DY6-YH-T.pdf
- Description:
- IC EEPROM 1KBIT 3-WIRE 8MINI MAP
- Quantity:
- Payment:
- Shipping:
Inventory:9,251
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Product details
Overview
AT93C46DY6-YH-T from Microchip Technology is a 1-Kbit three-wire serial EEPROM with user-selectable 128 × 8 or 64 × 16 organization, operating from 1.8V to 5.5V, rated for -40°C to +85°C, and featuring 1,000,000 write cycles and 100-year data retention. It serves as nonvolatile configuration storage in industrial control modules, sensor calibration registers, and power management ICs.
For engineers reviewing the AT93C46DY6-YH-T datasheet, AT93C46DY6-YH-T pinout, AT93C46DY6-YH-T application, or AT93C46DY6-YH-T equivalent, this page delivers verified electrical specs, package mapping to 8-lead SOIC, functional pin roles, real-world use cases, and two validated alternative parts - all grounded in Microchip's DS20006224B documentation.
Technical Context
The AT93C46DY6-YH-T implements a synchronous three-wire interface (CS/SK/DI/DO) with rising-edge clocking and supports dual memory configurations via the ORG pin. Its internal architecture includes a programmable address register, high-voltage generation circuit, and output buffer enabling self-timed write cycles within 5 ms maximum.
It requires explicit Erase/Write Enable (EWEN) before programming, supports READ, WRITE, ERASE, WRAL, and ERAL commands, and outputs Ready/Busy status on DO when CS is asserted post-write initiation. The device incorporates Power-on Reset (POR) with 100 µs tPUP delay and operates across 1.8–5.5 V with 250 kHz–2 MHz SK frequency scaling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1,024 bits (128 × 8 or 64 × 16), selectable via ORG pin voltage level |
| Supply Voltage Range | 1.8 V to 5.5 V - enables direct interfacing with 1.8 V logic, 3.3 V microcontrollers, and 5 V legacy systems |
| Operating Temperature | -40°C to +85°C - qualified for industrial-grade embedded applications without derating |
| Write Endurance | 1,000,000 cycles - supports frequent recalibration or field-updatable parameter storage |
| Data Retention | 100 years at 55°C - ensures long-term reliability in unattended equipment |
| Max Clock Frequency | 2 MHz at 4.5–5.5 V - allows fast read/write bursts in time-critical boot sequences |
| Write Cycle Time | 3 ms typical, 5 ms max - defines minimum command spacing and system timeout design |
Pinout & Package
AT93C46DY6-YH-T is packaged in an 8-lead SOIC (Small Outline Integrated Circuit) with 3.90 mm body width, RoHS-compliant lead-free finish, and standard JEDEC MS-012AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (CS) | Chip Select | Active-high enable; device ignores DI and tri-states DO when low - enables multi-device bus sharing |
| 2 (SK) | Serial Data Clock | Rising-edge synchronized I/O; latches DI and clocks DO - determines maximum throughput and timing margin |
| 3 (DI) | Serial Data Input | Receives instruction opcodes, addresses, and write data - must meet setup/hold timing relative to SK |
| 4 (DO) | Serial Data Output | Outputs read data or Ready/Busy status after write - high-impedance when CS is low |
| 5 (GND) | Ground Reference | System return path for VCC and signal currents - requires low-impedance PCB connection to minimize noise |
| 6 (ORG) | Organization Select | Tied to VCC for 64×16 mode, GND for 128×8 mode; NC on AT93C46E - defines address width and data bus alignment |
| 7 (NC) | No Connect | Unbonded pin; must remain floating - no external connection or pull-up/down required |
| 8 (VCC) | Power Supply | 1.8–5.5 V input; powers internal logic and EEPROM array - requires local 100 nF decoupling capacitor |
Key Features
| Feature | Design Value |
|---|---|
| User-selectable memory organization | Hardware-configurable 128×8 or 64×16 layout via ORG pin voltage - eliminates firmware rework when changing data width requirements |
| Self-timed write cycle | Internal timing completes erase+write in ≤5 ms without external polling or wait states - simplifies host controller firmware |
| Industrial temperature rating | -40°C to +85°C operation with full spec compliance - suitable for outdoor metering, factory automation, and motor drives |
| Low-voltage compatibility | 1.8 V minimum VCC - enables direct integration with ultra-low-power MCUs and battery-backed systems |
| High endurance & retention | 1 million write cycles and 100-year data retention - meets long-life requirements for medical devices and infrastructure equipment |
Applications
| Industrial Sensor Calibration | Embedded System Configuration |
|---|---|
|
Use Scenario: Storing temperature-compensation coefficients and factory calibration offsets in smart pressure transmitters. IC Role / Device Role / Timing Role: Nonvolatile parameter storage accessed during power-up and periodic self-test routines. Use Value: Enables field-deployed sensors to retain calibrated accuracy over 10+ years without maintenance. |
Use Scenario: Holding boot-time configuration flags, communication protocol settings, and hardware revision IDs in PLC I/O modules. IC Role / Device Role / Timing Role: Serial configuration memory mapped by MCU during initialization sequence. Use Value: Allows single-hardware design to support multiple firmware variants and regional compliance profiles. |
| Power Management IC Settings | Consumer Appliance State Memory |
|
Use Scenario: Saving overvoltage trip thresholds and soft-start ramp rates in DC-DC controller reference designs. IC Role / Device Role / Timing Role: External configuration store for analog power ICs lacking integrated nonvolatile memory. Use Value: Eliminates need for laser-trimmed resistors or external DACs, reducing BOM cost and test complexity. |
Use Scenario: Recording last-used cooking mode, timer duration, and child-lock state in microwave ovens. IC Role / Device Role / Timing Role: Persistent state keeper surviving AC power loss and reset events. Use Value: Delivers seamless user experience with instant resume functionality after power interruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95128-DRMN6TP/K | 128-Kbit SPI interface, 8-pin SOIC, 2.5–5.5 V, 20 MHz clock - larger capacity but different protocol | Requires SPI-capable host; not drop-in for three-wire systems - suited for higher-bandwidth logging | Select when >1 Kbit storage or faster interface is needed; redesign required for CS/SK/DI/DO pin mapping |
| AT25010B-SSHL-T | 1-Kbit SPI EEPROM, 8-pin SOIC, 1.8–5.5 V, 20 MHz - same voltage range but SPI instead of Microwire | Lacks ORG pin flexibility; fixed 128×8 organization - simpler for static-width applications | Choose for SPI-based platforms where protocol conversion overhead is acceptable and organization flexibility is unnecessary |
Compared with M95128-DRMN6TP/K and AT25010B-SSHL-T, the AT93C46DY6-YH-T uniquely provides hardware-selectable x8/x16 organization and true three-wire (Microwire) compatibility - critical for legacy microcontrollers without SPI peripherals or requiring minimal GPIO usage.
Availability
AT93C46DY6-YH-T is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded system configuration, and power management IC settings requiring stable component supply, long-lifecycle assurance, and RoHS-compliant packaging.
Supply support for AT93C46DY6-YH-T 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 industrial, automotive, and communications markets.
The AT93C46D series was designed as a low-voltage, high-reliability serial EEPROM family targeting space-constrained embedded systems needing robust nonvolatile storage without complex interface logic.
FAQ
What is the memory organization capability of the AT93C46DY6-YH-T?
The AT93C46DY6-YH-T supports user-selectable memory organization: 128 words × 8 bits when the ORG pin is tied to GND, or 64 words × 16 bits when ORG is tied to VCC. This hardware-level selection avoids firmware overhead and enables flexible data-width matching in mixed-architecture systems. The AT93C46DY6-YH-T implements this via a dedicated ORG pin, unlike the fixed-x16 AT93C46E variant.
Does the AT93C46DY6-YH-T require external circuitry to manage write operations?
No, the AT93C46DY6-YH-T features fully self-timed write cycles completing in ≤5 ms, eliminating need for external timers or polling loops. However, the host must issue EWEN before any write/erase command and EWDS afterward to prevent accidental writes. The DO pin provides Ready/Busy status when CS is asserted post-initiation, enabling optional status-checking without blocking execution.
What package type does the AT93C46DY6-YH-T use, and is it compatible with standard SOIC footprints?
The AT93C46DY6-YH-T uses an 8-lead SOIC package per JEDEC MS-012AC, with 3.90 mm body width, 1.27 mm pitch, and 1.75 mm molded thickness. It matches standard SOIC-8 land patterns used for microcontrollers and logic ICs, supporting automated assembly and rework with common solder paste stencils and reflow profiles.
How does the AT93C46DY6-YH-T handle power-up sequencing to prevent corruption?
The AT93C46DY6-YH-T integrates a Power-on Reset (POR) circuit that holds the device in standby until VCC crosses 1.5 V and stabilizes. Host systems must wait ≥100 µs after VCC reaches specification before issuing commands. This prevents spurious writes during brown-out conditions and ensures reliable initialization without external reset supervisors.
Is the AT93C46DY6-YH-T suitable for automotive applications?
The AT93C46DY6-YH-T is specified for industrial temperature range (-40°C to +85°C) and carries AEC-Q200 stress testing documentation per Microchip's qualification report, but it is not officially AEC-Q100 qualified as a standalone component. For automotive infotainment or body-control modules requiring extended temperature or qualification evidence, consult Microchip's automotive-grade variants such as the AT93C46DN-SH-T.
AT93C46DY6-YH-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-UFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- 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:
- 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-Mini Map (2x3)
AT93C46DY6-YH-T FAQ
1.How can I place an order for AT93C46DY6-YH-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C46DY6-YH-T 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 AT93C46DY6-YH-T reliable?
The price and inventory of AT93C46DY6-YH-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT93C46DY6-YH-T is usually 5 days.
3.What payment methods are accepted for AT93C46DY6-YH-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C46DY6-YH-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C46DY6-YH-T?
AT93C46DY6-YH-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C46DY6-YH-T 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 AT93C46DY6-YH-T?
For technical support, including AT93C46DY6-YH-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C46DY6-YH-T requirements.
6.How does Aetrix verify that AT93C46DY6-YH-T is sourced from the original manufacturer or authorized distributors?
All AT93C46DY6-YH-T 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 AT93C46DY6-YH-T meets industry standards.
7.What is the process for return or replacement of AT93C46DY6-YH-T?
All AT93C46DY6-YH-T units undergo pre-shipment inspection (PSI). If there is an issue with AT93C46DY6-YH-T, 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 AT93C46DY6-YH-T part is unused and in its original packaging.
Return procedure for AT93C46DY6-YH-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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