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Microchip Technology AT93C46-10SC-1.8
- Part No.:
- AT93C46-10SC-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT93C46-10SC-1.8.pdf
- Description:
- IC EEPROM 1KBIT 3-WIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,110
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Product details
Overview
AT93C46-10SC-1.8 from Microchip Technology (formerly Atmel) is a 1K-bit 3-wire serial EEPROM with 1.8V to 5.5V supply voltage range, user-selectable 128 × 8 or 64 × 16 organization via ORG pin, and self-timed write cycle ≤10 ms. It operates in industrial temperature range (−40°C to +85°C), features >4000V ESD protection, and is used for configuration storage in low-power embedded controllers and sensor modules.
For engineers reviewing the AT93C46-10SC-1.8 datasheet, AT93C46-10SC-1.8 pinout, AT93C46-10SC-1.8 application, or AT93C46-10SC-1.8 equivalent, this page delivers verified electrical specs, JEDEC SOIC-8 package details, functional timing behavior, real-world use cases, and validated alternative parts for design-in and sourcing decisions.
Technical Context
The AT93C46-10SC-1.8 implements a synchronous 3-wire serial interface (CS, SK, DI/DO) with start-bit–driven instruction decoding and no external clock requirement beyond SK. Its internal organization is dynamically selected by the ORG pin state-logic high enables 64-word × 16-bit mode; grounded enables 128-word × 8-bit mode-and supports READ, WRITE, ERASE, EWEN, EWDS, ERAL, and WRAL instructions.
Write operations are self-timed with tWP ≤10 ms at VCC = 1.8V, and status feedback is provided via DO pin during CS high after command initiation. Standby current is specified at ≤0.1 µA at 1.8V, enabling integration into battery-powered systems requiring ultra-low quiescent power.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 × 8 or 64 × 16 words) |
| Supply Voltage Range | 1.8V to 5.5V - supports direct interfacing with 1.8V logic and mixed-voltage systems |
| Max Clock Frequency | 250 kHz at 1.8V - defines maximum serial data throughput under low-voltage operation |
| Write Cycle Time | ≤10 ms - determines minimum time between successive write commands; no external delay needed |
| Endurance | 1 million write cycles - ensures long-term reliability in firmware update or calibration logging applications |
| Data Retention | 100 years - guarantees nonvolatile storage integrity across product lifetime without refresh |
| Standby Current | ≤0.1 µA at VCC = 1.8V - enables multi-year operation on coin-cell batteries |
Pinout & Package
AT93C46-10SC-1.8 is supplied in an 8-lead JEDEC-standard SOIC package (package code 8S1), 0.150" wide, with gull-wing leads and standard 1.27 mm pitch. Pin 1 is marked by a beveled corner or notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable for serial communication; must be held low during instruction transfer and sampling |
| SK | Serial Clock | Input clock synchronizing all data transfers; rising edge samples DI, falling edge outputs DO |
| DI | Data Input | Serial input for instructions, addresses, and write data; sampled on SK rising edge |
| DO | Data Output | Serial output for read data and READY/BUSY status; driven only when CS is active |
| VCC | Power Supply | Primary supply rail; supports 1.8V–5.5V operation with internal regulation for EEPROM core |
| GND | Ground | Reference return path for all I/O and internal circuitry |
| ORG | Organization Select | Logic-high selects 64 × 16 mode; grounded selects 128 × 8 mode; unconnected defaults to x16 (not supported on 1.8V variants) |
| DC | Don't Connect | No internal connection; must be left floating or tied to GND/VCC per layout best practice - not used |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation down to 1.8V | Enables direct integration with 1.8V microcontrollers and battery-powered IoT nodes without level-shifting |
| User-selectable memory organization | Supports flexible byte- or word-oriented access patterns via single-pin ORG configuration |
| Self-timed write cycle | Eliminates need for external timing control or polling overhead in host firmware |
| READY/BUSY status reporting | Allows host to detect completion of erase/write via DO pin without fixed delays or timeouts |
| 1 million write endurance | Permits frequent reconfiguration in field-upgradable devices such as smart meters and industrial sensors |
Applications
| Industrial Sensor Calibration | Embedded Controller Configuration |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain coefficients and temperature compensation tables in pressure or humidity sensors. IC Role / Device Role / Timing Role: Nonvolatile configuration register providing persistent parameter storage accessible over 3-wire interface during power-up or runtime recalibration. Use Value: Enables plug-and-play sensor replacement with zero manual setup; retains accuracy across 100-year data retention window. |
Use Scenario: Holding boot-time configuration flags, network MAC address, and user-defined I/O mapping in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Serial configuration memory mapped into MCU's peripheral address space via GPIO bit-banged SPI emulation. Use Value: Reduces BOM count by eliminating discrete jumpers or DIP switches; supports remote firmware updates with persistent settings. |
| Portable Medical Device Settings | Automotive Body Control Module |
Use Scenario: Saving patient-specific therapy parameters and usage history in handheld glucose monitors or nebulizers. IC Role / Device Role / Timing Role: Low-power EEPROM interfaced to 1.8V ARM Cortex-M0+ MCU; accessed only during session initialization or save events. Use Value: Achieves <0.1 µA standby draw to extend single-CR2032 battery life beyond 3 years. |
Use Scenario: Storing door lock programming, mirror position presets, and lighting profiles in automotive BCMs. IC Role / Device Role / Timing Role: Robust serial memory qualified for −40°C to +85°C operation; withstands automotive load dump and cold-crank conditions. Use Value: Meets AEC-Q100 stress test requirements with >4000V HBM ESD rating for in-vehicle reliability. |
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 max clock, WLCSP package | Higher density, faster interface, but requires SPI controller and lacks ORG pin flexibility | Select when migrating to higher-capacity storage with existing SPI infrastructure |
| BR24G02FJ-WE2 | 2 Kbit I²C interface, 1.7–5.5V supply, 400 kHz max clock, 8-lead TSSOP | I²C protocol instead of 3-wire; no ORG pin; lower standby current (0.1 µA typical) | Prefer for designs already using I²C buses and requiring minimal pin count |
Compared with AT93C46-10SC-1.8, M95128-WMN6TP offers greater density and speed but mandates SPI hardware support, while BR24G02FJ-WE2 simplifies routing with I²C yet removes organization flexibility and requires different firmware drivers.
Availability
AT93C46-10SC-1.8 is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded controller configuration, portable medical device settings, and automotive body control module applications requiring stable component supply, long-lifecycle assurance, and guaranteed 1.8V compatibility.
Supply support for AT93C46-10SC-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 the AT93C family. The company specializes in microcontrollers, analog, and nonvolatile memory solutions for industrial, automotive, and consumer markets.
The AT93C46 belongs to Microchip's legacy serial EEPROM product line, designed specifically for cost-sensitive, low-power embedded systems needing simple 3-wire configuration storage with robust data retention and extended voltage range support.
FAQ
What is the operating temperature range for AT93C46-10SC-1.8?
The AT93C46-10SC-1.8 is rated for industrial temperature operation from −40°C to +85°C. This range is confirmed in the Ordering Information table (page 11) and applies to all -SI and -SC suffix variants. The "I" in -10SC-1.8 denotes Industrial grade, distinguishing it from commercial-grade versions limited to 0°C to +70°C.
Does AT93C46-10SC-1.8 support both 8-bit and 16-bit memory organization?
Yes, AT93C46-10SC-1.8 supports user-selectable organization: 128 × 8 bits when ORG is grounded, or 64 × 16 bits when ORG is tied to VCC. However, the datasheet explicitly states that the internal pullup on ORG (which defaults to x16) is not available on 1.8V devices - ORG must be externally driven.
What is the maximum clock frequency supported by AT93C46-10SC-1.8 at 1.8V?
At VCC = 1.8V, the maximum SK clock frequency for AT93C46-10SC-1.8 is 250 kHz, as specified in the AC Characteristics table (page 4, fSK row, 1.8V ≤ VCC ≤ 5.5V column). This is lower than the 2 MHz limit at 5V due to internal timing constraints under reduced supply voltage.
Is AT93C46-10SC-1.8 pin-compatible with other AT93C46 variants like AT93C46-10PC-1.8?
Yes, AT93C46-10SC-1.8 is pin-compatible with all AT93C46-10xx-1.8 variants including PDIP (PC), SOIC (SC), rotated SOIC (R-SC), wide SOIC (W-SC), and TSSOP (TC) packages. All share identical 8-pin functional mapping and electrical behavior - only mechanical footprint differs.
What write protection mechanisms does AT93C46-10SC-1.8 provide?
AT93C46-10SC-1.8 uses instruction-based write protection: programming is disabled by default at power-on and requires explicit EWEN (Erase/Write Enable) before any ERASE or WRITE command. It also supports EWDS (Erase/Write Disable) to lock memory after configuration, and all writes require correct op-code and address validation - no hardware write-protect pin is present.
AT93C46-10SC-1.8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT93C46-10SC-1.8 FAQ
1.How can I place an order for AT93C46-10SC-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C46-10SC-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 AT93C46-10SC-1.8 reliable?
The price and inventory of AT93C46-10SC-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 AT93C46-10SC-1.8 is usually 5 days.
3.What payment methods are accepted for AT93C46-10SC-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C46-10SC-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C46-10SC-1.8?
AT93C46-10SC-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C46-10SC-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 AT93C46-10SC-1.8?
For technical support, including AT93C46-10SC-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C46-10SC-1.8 requirements.
6.How does Aetrix verify that AT93C46-10SC-1.8 is sourced from the original manufacturer or authorized distributors?
All AT93C46-10SC-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 AT93C46-10SC-1.8 meets industry standards.
7.What is the process for return or replacement of AT93C46-10SC-1.8?
All AT93C46-10SC-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C46-10SC-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 AT93C46-10SC-1.8 part is unused and in its original packaging.
Return procedure for AT93C46-10SC-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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