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Microchip Technology AT93C46W-10SC
- Part No.:
- AT93C46W-10SC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT93C46W-10SC.pdf
- Description:
- IC EEPROM 1KBIT 3-WIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,943
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Product details
Overview
AT93C46W-10SC from Microchip Technology (formerly Atmel) is a 1K-bit 3-wire serial EEPROM with user-selectable 128 × 8 or 64 × 16 organization, operating from 2.7V to 5.5V, featuring 10 ms max self-timed write cycle and 1 million write endurance. It serves as nonvolatile configuration storage in microcontroller-based systems requiring low-voltage compatibility and space-constrained PCB layouts.
For engineers reviewing the AT93C46W-10SC datasheet, AT93C46W-10SC pinout, AT93C46W-10SC application, or AT93C46W-10SC equivalent, key selection criteria include voltage range (2.7–5.5V), 8-lead SOIC package (EIAJ), 2 MHz clock support at 5V, ORG-pin configurable memory width, and industrial-grade temperature operation (−40°C to +85°C).
Technical Context
The AT93C46W-10SC implements a synchronous 3-wire serial interface (CS, SK, DI/DO) with instruction-set-driven operation including READ, WRITE, ERASE, EWEN, and EWDS. Its internal organization is dynamically selected via the ORG pin-tied to VCC for 64 × 16 mode or GND for 128 × 8 mode-enabling flexible byte/word addressing without external logic.
Write operations are self-timed with no external erase step required; READY/BUSY status is reported on DO when CS is asserted post-instruction. The device supports dual supply voltage ranges (2.7–5.5V), delivers ≤10 µA standby current at 2.7V, and maintains data retention for 100 years under specified conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 × 8 or 64 × 16 organization) |
| Supply Voltage Range | 2.7V to 5.5V - enables direct interface with 3.3V and 5V microcontrollers without level-shifting |
| Max Clock Frequency | 2 MHz at VCC = 5.0V - supports high-speed configuration reads in time-critical boot sequences |
| Write Cycle Time | 10 ms maximum - defines minimum interval between successive writes; impacts firmware update latency |
| Endurance | 1 million write cycles - ensures reliable field reprogramming over product lifetime |
| Data Retention | 100 years at 25°C - guarantees long-term storage of calibration, serial, or security data |
| Operating Temperature | −40°C to +85°C - qualified for industrial environments including automotive body control modules |
Pinout & Package
AT93C46W-10SC is housed in an 8-lead EIAJ SOIC package (package code 8S2), 0.200" wide, with standard gull-wing leads and JEDEC-compliant footprint. Pin 1 is marked by a beveled corner or dot; the package is RoHS-compliant and moisture-sensitive level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable: must be held low during instruction execution; determines device activation in multi-device bus |
| SK | Serial Clock | Synchronizes all data transfers; rising edge latches DI, falling edge outputs DO |
| DI | Data Input | Receives instruction opcodes, addresses, and write data; requires setup/hold timing per AC specs |
| DO | Data Output | Outputs read data or READY/BUSY status; tri-states when CS is high |
| GND | Ground Reference | Signal and power return path; must be low-impedance to minimize noise coupling into serial interface |
| VCC | Power Supply | Primary supply input; decoupling capacitor (0.1 µF) required within 10 mm of pin |
| ORG | Organization Select | Configures memory width: VCC = 64×16, GND = 128×8; unconnected defaults to x16 via internal pull-up |
| DC | Don't Connect | No internal connection; must remain floating or tied to GND/VCC only if required by board layout constraints |
Key Features
| Feature | Design Value |
|---|---|
| User-selectable memory organization | Hardware-configurable 128 × 8 or 64 × 16 layout via ORG pin-eliminates need for software address translation |
| Low-voltage operation down to 2.7V | Guaranteed functionality across 2.7–5.5V range-supports mixed-voltage systems and brown-out resilience |
| Self-timed write cycle | No external timing control needed; busy polling via DO pin simplifies host firmware implementation |
| High reliability metrics | 1M write cycles and 100-year data retention-validated for mission-critical parameter storage in industrial controllers |
| ESD protection >4000V | HBM-rated robustness reduces risk of handling damage during assembly and field service |
Applications
| Industrial Sensor Calibration | Consumer Remote Control ID Storage |
|---|---|
Use Scenario: Storing factory-calibrated sensor offset/gain coefficients in HVAC temperature sensors. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed during power-on initialization. Use Value: Enables plug-and-play sensor replacement without manual recalibration; leverages 100-year retention for field-deployed units. |
Use Scenario: Holding unique IR code sets and button mapping profiles in universal remote controls. IC Role / Device Role / Timing Role: Serial configuration store read at startup to configure RF/IR transmission logic. Use Value: Supports firmware-updatable remote behavior using compact 1K-bit footprint and 2.7V operation for coin-cell battery life. |
| Automotive Body Control Module | Medical Infusion Pump Settings |
Use Scenario: Saving user preferences (mirror position, seat memory) and fault logs in 12V vehicle subsystems. IC Role / Device Role / Timing Role: Low-power EEPROM interfaced to 3.3V MCU via 3-wire SPI-compatible bus. Use Value: −40°C to +85°C rating ensures operation across engine bay thermal cycling; 1M endurance withstands frequent log updates. |
Use Scenario: Securing delivery rate presets, alarm thresholds, and calibration history in battery-powered infusion devices. IC Role / Device Role / Timing Role: Tamper-resistant configuration memory with verified data integrity on power-up. Use Value: 2.7V min supply allows direct use with single Li-ion cell; 100-year retention meets FDA long-term traceability requirements. |
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 max clock | Higher density and faster interface; requires SPI-capable host, not 3-wire compatible | Select when higher capacity and speed justify interface redesign and increased cost |
| STK11C68-3 | 8 Kbit (1K × 8), 3-wire interface, 4.5–5.5V only, 10 ms write, PDIP/SOIC | Narrower voltage range; lacks 2.7V support and ORG-pin flexibility; legacy part with limited availability | Consider only for drop-in replacement in existing 5V-only designs where ORG configuration is unused |
Compared with M95128-WMN6TP and STK11C68-3, the AT93C46W-10SC uniquely balances ultra-low-voltage operation (2.7V), hardware-configurable organization, and proven industrial reliability in a compact 8-lead SOIC-making it optimal for cost-sensitive, space-constrained, and mixed-supply embedded systems.
Availability
AT93C46W-10SC is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive body control modules, medical infusion pump settings, and consumer remote control ID storage requiring stable component supply across extended temperature and voltage ranges.
Supply support for AT93C46W-10SC 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 continues to manufacture, qualify, and support the AT93C series EEPROMs with full documentation and long-term product commitment.
The AT93C46W-10SC belongs to Microchip's legacy serial EEPROM portfolio designed specifically for robust, low-pin-count nonvolatile storage in resource-constrained embedded systems where 3-wire simplicity and wide voltage tolerance are critical.
FAQ
What is the function of the ORG pin on the AT93C46W-10SC?
The ORG pin on the AT93C46W-10SC selects internal memory organization: tied to VCC enables 64 × 16 mode (16-bit words), tied to GND enables 128 × 8 mode (8-bit bytes). If left unconnected, an internal ~1 MΩ pull-up defaults to x16 mode. This hardware-selectable width eliminates software address mapping overhead and is fully supported in the AT93C46W-10SC datasheet.
Does the AT93C46W-10SC support 1.8V operation?
No, the AT93C46W-10SC does not support 1.8V operation. Its specified supply range is 2.7V to 5.5V, as confirmed by the "-2.7" suffix in the ordering code and the DC Characteristics table (VCC3 = 2.7V to 5.5V). For 1.8V operation, Microchip offers the AT93C46W-10SC-1.8 variant, which is a distinct orderable part with different electrical specifications.
How is READY/BUSY status reported during a write cycle on the AT93C46W-10SC?
During a write cycle, the AT93C46W-10SC reports READY/BUSY status on the DO pin: after completing the instruction, if CS is brought high while the write is still active, DO outputs logic '0' (BUSY); once complete, DO outputs logic '1' (READY). This polling mechanism is defined in the Functional Description section and requires tCS ≥ 250 ns before sampling DO.
What package type is used for the AT93C46W-10SC?
The AT93C46W-10SC uses an 8-lead EIAJ SOIC package (package code 8S2), 0.200" wide, with gull-wing leads. This is explicitly stated in the Ordering Information table and Packaging Information section. It is physically distinct from the JEDEC SOIC (8S1) and TSSOP (8T) variants offered in the same family.
Is the AT93C46W-10SC pin-compatible with other AT93C46 variants like AT93C46-10SC?
Yes, the AT93C46W-10SC is pin-compatible with AT93C46-10SC and AT93C46R-10SC, as all share the same 8-lead EIAJ SOIC (8S2) package and identical pin functions (CS, SK, DI, DO, VCC, GND, ORG, DC). Differences lie only in voltage range (-2.7 vs blank) and pinout rotation (R suffix), not pin assignment or electrical interface.
AT93C46W-10SC 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:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT93C46W-10SC FAQ
1.How can I place an order for AT93C46W-10SC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C46W-10SC 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 AT93C46W-10SC reliable?
The price and inventory of AT93C46W-10SC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT93C46W-10SC is usually 5 days.
3.What payment methods are accepted for AT93C46W-10SC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C46W-10SC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C46W-10SC?
AT93C46W-10SC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C46W-10SC 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 AT93C46W-10SC?
For technical support, including AT93C46W-10SC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C46W-10SC requirements.
6.How does Aetrix verify that AT93C46W-10SC is sourced from the original manufacturer or authorized distributors?
All AT93C46W-10SC 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 AT93C46W-10SC meets industry standards.
7.What is the process for return or replacement of AT93C46W-10SC?
All AT93C46W-10SC units undergo pre-shipment inspection (PSI). If there is an issue with AT93C46W-10SC, 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 AT93C46W-10SC part is unused and in its original packaging.
Return procedure for AT93C46W-10SC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT93C46W-10SC Tags
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