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Home > Products > Integrated Circuits (ICs) > Memory > Memory

Microchip Technology AT93C46A-10SC-2.5

Name: AT93C46A-10SC-2.5
Brand: Microchip Technology
SKU: AT93C46A-10SC-2.5
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AT93C46A-10SC-2.5

Manufacturer:: Microchip Technology

Category:: Memory

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: AT93C46A-10SC-2.5.pdf

Description:: IC EEPROM 1KBIT 3-WIRE 8SOIC

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Product details

Overview

AT93C46A-10SC-2.5 from Microchip Technology is a 1-Kbit serial EEPROM organized as 128 × 8 or 64 × 16, supporting both 8-bit and 16-bit word configurations via ORG pin control, with 2.5 V to 5.5 V supply voltage, 10 MHz SPI-compatible clock, and 1,000,000 write cycles endurance.

For engineers reviewing the AT93C46A-10SC-2.5 datasheet, AT93C46A-10SC-2.5 pinout, AT93C46A-10SC-2.5 application, or AT93C46A-10SC-2.5 equivalent, key selection considerations include ORG pin-configurable memory organization, industrial temperature range (−40°C to +85°C), Microwire interface timing compliance, and SOIC-8 package compatibility with legacy board layouts.

Technical Context

The AT93C46A-10SC-2.5 implements a Microwire-compatible 3-wire serial interface (CS, SK, DI/DO) with dual-directional data I/O on a single pin, supporting both read and write operations under software-controlled command sequences. It uses internal address auto-increment during sequential reads and includes a Write Enable Latch (WEL) for hardware-assisted write protection.

It features a built-in self-timed write cycle with automatic erase-before-write, programmable write protection via STATUS register bits, and a 10 ms typical byte-write time. The device supports both 8-bit and 16-bit word access modes selected by the ORG pin state at power-up.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Size	1 Kbit (128 × 8 or 64 × 16 configurable)
Interface	Microwire-compatible 3-wire serial (CS, SK, DI/DO)
Supply Voltage	2.5 V to 5.5 V - enables direct integration into 3.3 V and 5 V systems without level shifting
Max Clock Frequency	10 MHz - supports fast configuration loading in boot-time applications
Write Endurance	1,000,000 cycles - suitable for frequent calibration or runtime parameter storage
Data Retention	100 years at +25°C - ensures long-term nonvolatile storage of critical settings
Operating Temp	−40°C to +85°C - qualified for industrial environment deployment

Pinout & Package

AT93C46A-10SC-2.5 is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package with 150 mil body width, surface-mount compatible, and JEDEC MS-012AC compliant.

Pin/Terminal	Circuit Role	Design Meaning
CS	Chip Select	Active-low enable for serial communication; must be low during all SK transitions
SK	Serial Clock	Input clock synchronizing data transfer; max 10 MHz frequency supported
DI	Data Input	Serial input for commands and write data; shared with DO in bidirectional mode
DO	Data Output	Serial output for read data; shares pin with DI when configured for 3-wire operation
ORG	Organization Select	High = 64 × 16 mode; Low = 128 × 8 mode; sampled at power-up only
V_CC	Power Supply	2.5 V to 5.5 V supply input; decoupling capacitor required near pin
V_SS	Ground	Reference ground for all digital and interface signals
NC	No Connect	Internally unused pin; must be left unconnected or tied to V_SS

Key Features

Feature	Design Value
Configurable Memory Organization	Single ORG pin selects between 128 × 8 and 64 × 16 word structures at power-up
Hardware Write Protection	STATUS register bits allow selective locking of upper/lower memory blocks
Self-Timed Write Cycle	Internal timing eliminates need for external write-complete polling or delay loops
Low-Voltage Operation	Full functionality down to 2.5 V enables use in battery-backed or energy-constrained systems
Industrial Temperature Range	Guaranteed operation from −40°C to +85°C supports deployment in harsh environments

Applications

Printer Firmware Storage	Industrial Sensor Calibration
Use Scenario: Storing printer model-specific firmware patches and configuration tables that persist across power cycles. IC Role / Device Role / Timing Role: Nonvolatile configuration memory holding boot-critical data accessed during cold start. Use Value: ORG pin flexibility allows reuse of same AT93C46A-10SC-2.5 across multiple printer models with differing data width requirements.	Use Scenario: Recording factory-calibrated offset/gain coefficients for analog sensor front-ends in PLC modules. IC Role / Device Role / Timing Role: Parameter storage element interfaced via Microwire to microcontroller during initialization. Use Value: 1,000,000 write cycles support field recalibration without EEPROM replacement.
Medical Device Settings	Automotive Body Control Module
Use Scenario: Saving user-adjusted therapy parameters and device usage logs in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure, low-power nonvolatile memory accessed infrequently but requiring guaranteed retention. Use Value: 100-year data retention at +25°C ensures integrity of patient-related settings over product lifetime.	Use Scenario: Storing vehicle-specific configuration flags (e.g., mirror fold-on-lock, seat position presets) in BCMs. IC Role / Device Role / Timing Role: Configuration memory mapped into MCU's peripheral address space via bit-banged Microwire. Use Value: −40°C to +85°C rating matches automotive under-hood and cabin ambient requirements.

Printer Firmware Storage

Industrial Sensor Calibration

Use Scenario: Storing printer model-specific firmware patches and configuration tables that persist across power cycles.

IC Role / Device Role / Timing Role: Nonvolatile configuration memory holding boot-critical data accessed during cold start.

Use Value: ORG pin flexibility allows reuse of same AT93C46A-10SC-2.5 across multiple printer models with differing data width requirements.

Use Scenario: Recording factory-calibrated offset/gain coefficients for analog sensor front-ends in PLC modules.

IC Role / Device Role / Timing Role: Parameter storage element interfaced via Microwire to microcontroller during initialization.

Use Value: 1,000,000 write cycles support field recalibration without EEPROM replacement.

Medical Device Settings

Automotive Body Control Module

Use Scenario: Saving user-adjusted therapy parameters and device usage logs in portable diagnostic equipment.

IC Role / Device Role / Timing Role: Secure, low-power nonvolatile memory accessed infrequently but requiring guaranteed retention.

Use Value: 100-year data retention at +25°C ensures integrity of patient-related settings over product lifetime.

Use Scenario: Storing vehicle-specific configuration flags (e.g., mirror fold-on-lock, seat position presets) in BCMs.

IC Role / Device Role / Timing Role: Configuration memory mapped into MCU's peripheral address space via bit-banged Microwire.

Use Value: −40°C to +85°C rating matches automotive under-hood and cabin ambient requirements.

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial EEPROM applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
AT93C46D-10SU-2.7	Same 1-Kbit capacity and Microwire interface, but rated for 2.7–5.5 V supply and offered in TSSOP-8 package	Requires board layout change due to different footprint; not drop-in compatible with SOIC-8	Select if lower minimum supply (2.7 V) suffices and TSSOP-8 is preferred for density
M95010-WMN6TP	1-Kbit SPI EEPROM (not Microwire), 2.5–5.5 V, SOIC-8, but requires separate SI/SO pins and lacks ORG pin	Needs firmware update to replace Microwire command set with SPI protocol; no organization flexibility	Choose only if SPI interface is already standardized in design and ORG configurability is unnecessary

Compared with AT93C46D-10SU-2.7 and M95010-WMN6TP, the AT93C46A-10SC-2.5 uniquely offers ORG-selectable word width in a standard SOIC-8 package with full 2.5 V operation-critical for legacy Microwire-based designs needing pin- and function-level continuity.

Availability

AT93C46A-10SC-2.5 is available at Aetrix Electronics and suitable for printer firmware storage, industrial sensor calibration, and medical device settings requiring stable component supply and long-term lifecycle support.

Supply support for AT93C46A-10SC-2.5 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 company specializing in microcontrollers, analog components, and nonvolatile memory solutions for industrial, automotive, and consumer applications.

The AT93C46A-10SC-2.5 belongs to Microchip's legacy AT93Cxx serial EEPROM family, designed specifically for Microwire-based system configuration and parameter storage in resource-constrained embedded controllers.

FAQ

What memory organization options does the AT93C46A-10SC-2.5 support?

The AT93C46A-10SC-2.5 supports two memory organizations: 128 words × 8 bits or 64 words × 16 bits. Selection is controlled by the logic state of the ORG pin at power-up-low for 8-bit mode, high for 16-bit mode. This configuration is latched internally and remains fixed until the next power cycle. The AT93C46A-10SC-2.5 does not support dynamic reconfiguration during operation.

Does the AT93C46A-10SC-2.5 require external pull-up resistors on its interface lines?

The AT93C46A-10SC-2.5 does not require external pull-ups on CS, SK, or DI/DO lines for standard Microwire operation, as internal weak pull-downs are provided on CS and DI/DO, and SK is driven by the controller. However, a pull-up on CS is recommended in noisy environments to prevent spurious activation. The AT93C46A-10SC-2.5 datasheet specifies no mandatory external pull-ups under typical PCB routing conditions.

What is the maximum write speed for the AT93C46A-10SC-2.5?

The AT93C46A-10SC-2.5 has a typical byte-write time of 10 ms and a maximum of 15 ms, independent of clock frequency. While the interface supports up to 10 MHz clocking, write completion is governed by internal self-timed programming-no faster than 10 ms per byte. The AT93C46A-10SC-2.5 does not support page writes; each byte requires individual command initiation.

Can the AT93C46A-10SC-2.5 be used in a 3.3 V system?

Yes, the AT93C46A-10SC-2.5 operates fully across 2.5 V to 5.5 V, making it directly compatible with 3.3 V systems without level shifters. All electrical specifications-including logic thresholds, timing parameters, and write voltage margins-are guaranteed within this range. The AT93C46A-10SC-2.5 maintains full Microwire timing compliance and 1,000,000 write endurance at 3.3 V.

Is the AT93C46A-10SC-2.5 RoHS compliant and lead-free?

Yes, the AT93C46A-10SC-2.5 is RoHS compliant and lead-free, meeting EU Directive 2011/65/EU and JESD204B requirements. The "-2.5" suffix denotes the 2.5 V minimum operating voltage grade, and the "SC" indicates SOIC-8 packaging with lead-free finish. Microchip's official documentation confirms Pb-free matte tin plating and halogen-free molding compound for this part number.

AT93C46A-10SC-2.5 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:: 2.5V ~ 5.5V

Operating Temperature:: 0°C ~ 70°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

AT93C46A-10SC-2.5 FAQ

1.How can I place an order for AT93C46A-10SC-2.5 through Aetrix?

Please submit a Request for Quotation (RFQ) for AT93C46A-10SC-2.5 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 AT93C46A-10SC-2.5 reliable?

The price and inventory of AT93C46A-10SC-2.5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT93C46A-10SC-2.5 is usually 5 days.

3.What payment methods are accepted for AT93C46A-10SC-2.5?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C46A-10SC-2.5 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AT93C46A-10SC-2.5?

AT93C46A-10SC-2.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AT93C46A-10SC-2.5 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 AT93C46A-10SC-2.5?

For technical support, including AT93C46A-10SC-2.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C46A-10SC-2.5 requirements.

6.How does Aetrix verify that AT93C46A-10SC-2.5 is sourced from the original manufacturer or authorized distributors?

All AT93C46A-10SC-2.5 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 AT93C46A-10SC-2.5 meets industry standards.

7.What is the process for return or replacement of AT93C46A-10SC-2.5?

All AT93C46A-10SC-2.5 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C46A-10SC-2.5, 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 AT93C46A-10SC-2.5 part is unused and in its original packaging.

Return procedure for AT93C46A-10SC-2.5:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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