My Inquiry
My Account
Microchip Technology AT93C46DY6-YH-E
- Part No.:
- AT93C46DY6-YH-E
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
AT93C46DY6-YH-E.pdf
- Description:
- IC EEPROM 1KBIT 3-WIRE 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:32,810
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT93C46DY6-YH-E 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 - deployed in industrial sensor calibration, embedded system configuration storage, and power-management parameter backup.
For engineers reviewing the AT93C46DY6-YH-E datasheet, AT93C46DY6-YH-E pinout, AT93C46DY6-YH-E application, or AT93C46DY6-YH-E equivalent, key selection considerations include voltage range compatibility (1.8–5.5 V), three-wire interface timing at 2 MHz (5 V), self-timed 5 ms max write cycle, ORG pin functionality for x8/x16 mode selection, and industrial-grade temperature operation.
Technical Context
The AT93C46DY6-YH-E implements a synchronous three-wire serial interface (CS/SK/DI/DO) with rising-edge clock synchronization and supports both READ and WRITE operations initiated via opcode-driven command sequences. Its internal architecture includes an address register, row/column decoders, high-voltage generation for EEPROM programming, and a power-on reset circuit ensuring safe initialization.
Unlike the AT93C46E variant, the AT93C46D-based AT93C46DY6-YH-E retains the ORG pin to enable runtime selection between 128 × 8 and 64 × 16 memory configurations - a critical differentiator for systems requiring flexible byte- or word-oriented access without firmware rework.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1,024 bits (128 × 8 or 64 × 16 configurable) |
| Supply Voltage Range | 1.8 V to 5.5 V - enables direct interfacing with 1.8 V, 2.7 V, 3.3 V, and 5 V microcontrollers without level shifters |
| Max Clock Frequency | 2 MHz at VCC = 4.5–5.5 V - supports high-speed configuration reads in real-time control loops |
| Write Cycle Time | ≤ 5 ms - ensures predictable latency for non-blocking firmware updates of calibration tables |
| Endurance | 1,000,000 write cycles - sustains daily field recalibration over 27 years at one write per day |
| Data Retention | 100 years at TA = 55 °C - guarantees long-term integrity of stored device identity or security keys |
| Operating Temperature | -40 °C to +85 °C - qualified for deployment in automotive body controllers and industrial PLC modules |
Pinout & Package
AT93C46DY6-YH-E is supplied in an 8-lead SOIC package (3.9 mm × 4.9 mm body, 1.27 mm pitch), RoHS-compliant and halide-free, with gull-wing leads suitable for standard reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-high enable: device responds only when CS = high; DO enters high-Z when CS = low |
| SK | Serial Data Clock | Rising-edge synchronized I/O - all data latched on SK rising edge; defines maximum 2 MHz timing at 5 V |
| DI | Serial Data Input | Receives instruction opcodes (READ/EWEN/WRITE), addresses, and data; requires tDIS/tDIH setup/hold timing |
| DO | Serial Data Output | Outputs read data or Ready/Busy status (logic 1 = ready, logic 0 = busy during write/erase) |
| GND | Ground Reference | System ground return path; required for stable VCC reference and noise immunity |
| ORG | Internal Organization Select | Tie to VCC for 64 × 16 mode; tie to GND for 128 × 8 mode; unconnected defaults to 64 × 16 |
| NC | No Connect | Pin 7 is internally unused and must remain floating or grounded - no electrical function |
| VCC | Power Supply | 1.8–5.5 V supply input; includes internal POR circuit requiring ≥100 µs stabilization before first command |
Key Features
| Feature | Design Value |
|---|---|
| User-selectable memory organization | Hardware-configurable x8 or x16 mode via ORG pin - eliminates need for software abstraction layer in mixed-data-width systems |
| Self-timed write cycle | No external polling or timeout management required - DO pin signals completion via Ready/Busy status |
| Industrial temperature grade | Validated operation from -40 °C to +85 °C - supports deployment in engine control units and outdoor metering hardware |
| Low standby current | 0.4 µA at 1.8 V - extends battery life in always-on IoT endpoint devices with infrequent configuration updates |
| Green packaging | Lead-free, halide-free, RoHS-compliant SOIC - meets global environmental compliance requirements without derating |
Applications
| Industrial Sensor Calibration | Embedded System 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 storage accessed during power-up or recalibration routines; interfaces via SPI-compatible three-wire bus. Use Value: Enables field-replaceable sensor modules with persistent calibration data across power cycles and firmware updates. |
Use Scenario: Holding boot configuration flags, network MAC addresses, and UI language settings in medical diagnostic handhelds. IC Role / Device Role / Timing Role: Serial configuration memory mapped by MCU during initialization; supports fast 2 MHz reads at 3.3 V. Use Value: Reduces BOM count by replacing discrete jumpers or OTP fuses while supporting post-manufacturing personalization. |
| Power Management Backup | Consumer Device Identity Storage |
Use Scenario: Saving last-known state (e.g., dimming level, color temperature) in smart LED drivers after AC mains interruption. IC Role / Device Role / Timing Role: Low-voltage EEPROM (1.8 V min) retaining data during brownout conditions; writes triggered on state change. Use Value: Delivers seamless user experience with zero-loss state recovery, even under unstable 2.7 V rail conditions. |
Use Scenario: Storing unique device identifiers, firmware version stamps, and regulatory certification codes in Bluetooth audio earbuds. IC Role / Device Role / Timing Role: Secure, tamper-resistant serial memory accessed during bootloader authentication sequence. Use Value: Supports anti-counterfeiting and OTA update validation without requiring cryptographic co-processors. |
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 (4-wire), fixed 128 × 1024 organization, no ORG pin | Higher density but incompatible command set and pinout; requires MCU SPI peripheral instead of generic GPIO bit-banging | Select when >1 Kbit capacity is needed and SPI-native interface simplifies firmware integration |
| AT25010B-SSHL-T | 1-Kbit SPI EEPROM, 2.5–5.5 V range, no ORG pin, fixed 128 × 8 organization | Lacks x16 mode and 1.8 V support; not suitable for ultra-low-power or dual-width memory access use cases | Choose for cost-sensitive designs where 1.8 V operation and x16 flexibility are unnecessary |
Compared with M95128-DRMN6TP/K and AT25010B-SSHL-T, the AT93C46DY6-YH-E uniquely supports hardware-selectable memory width and 1.8 V operation - making it optimal for space-constrained, multi-voltage embedded systems requiring minimal firmware adaptation.
Availability
AT93C46DY6-YH-E is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded system configuration, and power-management parameter backup requiring stable component supply across extended product lifecycles.
Supply support for AT93C46DY6-YH-E 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 U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and nonvolatile memory solutions, with ISO 9001-certified global manufacturing and design centers.
The AT93C46D family was designed specifically for low-power, three-wire serial configuration storage in resource-constrained embedded systems - emphasizing voltage flexibility, industrial reliability, and hardware-configurable memory layout.
FAQ
What is the function of the ORG pin on the AT93C46DY6-YH-E?
The ORG pin on the AT93C46DY6-YH-E selects internal memory organization: tied to VCC for 64 × 16 mode, tied to GND for 128 × 8 mode, or left unconnected to default to 64 × 16. This hardware-selectable feature distinguishes AT93C46DY6-YH-E from the fixed-x16 AT93C46E and enables flexible data access without firmware changes. The AT93C46DY6-YH-E's ORG pin is functional and must be properly terminated per application requirements.
Does the AT93C46DY6-YH-E support 1.8 V operation, and what are the timing implications?
Yes, the AT93C46DY6-YH-E operates down to 1.8 V with guaranteed functionality across -40°C to +85°C. At 1.8 V, maximum clock frequency is reduced to 250 kHz, and AC timing parameters such as tSKH/tSKL increase to 1000 ns minimum. These relaxed timings ensure robust communication in ultra-low-power battery-powered systems where voltage scaling is used to minimize energy consumption. The AT93C46DY6-YH-E maintains full command compatibility and data integrity at 1.8 V.
How does the AT93C46DY6-YH-E indicate write completion during a self-timed write cycle?
The AT93C46DY6-YH-E uses its DO pin to signal Ready/Busy status: after initiating a WRITE or ERASE command, if CS is brought high following a minimum tCS low time, DO outputs logic 0 while busy and transitions to logic 1 upon completion. This eliminates the need for fixed software delays - firmware can poll DO synchronously with SK to determine readiness. The AT93C46DY6-YH-E's Ready/Busy mechanism is fully functional across its entire 1.8–5.5 V supply range.
Is the AT93C46DY6-YH-E pin-compatible with other members of the AT93C46D family?
Yes, the AT93C46DY6-YH-E shares identical 8-lead SOIC pinout, electrical characteristics, and command set with all AT93C46D variants (e.g., AT93C46D-PU, AT93C46D-XM). It is not pin-compatible with AT93C46E devices, which omit the ORG pin (pin 6) and route NC to that position. The AT93C46DY6-YH-E's Y6-YH-E suffix denotes specific tape-and-reel packaging and industrial-grade screening, not functional deviation - all AT93C46D-SOIC parts share the same footprint and interface behavior.
What is the maximum endurance and data retention specification for the AT93C46DY6-YH-E?
The AT93C46DY6-YH-E is specified for 1,000,000 write cycles and 100 years of data retention at 55°C ambient temperature. These values are characterized per Microchip's qualification standards and apply across the full industrial temperature range (-40°C to +85°C) and supply voltage range (1.8 V to 5.5 V). Endurance testing is performed at VCC = 5.0 V and TA = 25°C; retention is extrapolated from accelerated high-temperature testing. The AT93C46DY6-YH-E delivers proven long-term reliability for mission-critical configuration storage.
AT93C46DY6-YH-E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-UFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 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-UDFN (2x3)
AT93C46DY6-YH-E FAQ
1.How can I place an order for AT93C46DY6-YH-E through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C46DY6-YH-E 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-E reliable?
The price and inventory of AT93C46DY6-YH-E 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-E is usually 5 days.
3.What payment methods are accepted for AT93C46DY6-YH-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C46DY6-YH-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C46DY6-YH-E?
AT93C46DY6-YH-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C46DY6-YH-E 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-E?
For technical support, including AT93C46DY6-YH-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C46DY6-YH-E requirements.
6.How does Aetrix verify that AT93C46DY6-YH-E is sourced from the original manufacturer or authorized distributors?
All AT93C46DY6-YH-E 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-E meets industry standards.
7.What is the process for return or replacement of AT93C46DY6-YH-E?
All AT93C46DY6-YH-E units undergo pre-shipment inspection (PSI). If there is an issue with AT93C46DY6-YH-E, 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-E part is unused and in its original packaging.
Return procedure for AT93C46DY6-YH-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT93C46DY6-YH-E Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
