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Microchip Technology AT93C46W-10SC-2.7
- Part No.:
- AT93C46W-10SC-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT93C46W-10SC-2.7.pdf
- Description:
- IC EEPROM 1KBIT 3-WIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,863
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Product details
Overview
AT93C46W-10SC-2.7 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, 1 million write endurance, and 100-year data retention - deployed in industrial control panels for configuration storage and calibration parameter backup.
For engineers reviewing the AT93C46W-10SC-2.7 datasheet, AT93C46W-10SC-2.7 pinout, AT93C46W-10SC-2.7 application, or AT93C46W-10SC-2.7 equivalent, key selection criteria include low-voltage operation down to 2.7V, SOIC-8 (EIAJ) package compatibility, ORG-pin configurable memory width, and READY/BUSY status reporting via DO pin during write cycles.
Technical Context
The AT93C46W-10SC-2.7 implements a synchronous 3-wire serial interface (CS, SK, DI/DO) with start-bit–driven instruction decoding and no external clock dependency beyond SK. It supports seven instructions including READ, WRITE, ERASE, EWEN, EWDS, ERAL, and WRAL - all initiated by CS assertion and validated by rising-edge synchronization.
Memory organization is dynamically selected via the ORG pin: tied to VCC enables 64 × 16 mode; grounded enables 128 × 8 mode; unconnected defaults to x16 via internal ~1 MΩ pull-up (not available on 1.8V variants). The device enters Erase/Write Disable (EWDS) state at power-on and requires explicit EWEN before programming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 × 8 or 64 × 16 words) |
| Supply Voltage Range | 2.7V to 5.5V - enables direct interfacing with 3.3V microcontrollers without level-shifting |
| Max Clock Frequency | 1 MHz at 2.7V - defines maximum serial transaction rate under low-voltage operation |
| Write Cycle Time | 10 ms max - determines minimum time between successive write commands |
| Endurance | 1 million write cycles - supports frequent field updates in programmable logic controllers |
| Data Retention | 100 years at 25°C - ensures long-term reliability in unattended embedded systems |
| ESD Protection | >4000V HBM - provides robust handling in manufacturing and field service environments |
Pinout & Package
AT93C46W-10SC-2.7 is housed in an 8-lead EIAJ SOIC package (package code 8S2), 0.200" wide, with gull-wing leads and standard JEDEC footprint compatibility. Pin 1 is marked by a beveled corner or notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable: must be held low for entire instruction sequence; high state returns DO to high-impedance or outputs READY/BUSY |
| SK | Serial Clock | Input clock synchronizing all data transfers; timing parameters (tSKH/tSKL) scale with VCC |
| DI | Data Input | Serial instruction and address/data input; accepts 7-bit opcodes + address + data per instruction |
| DO | Data Output | Serial data output for READ; also reports READY ('1') / BUSY ('0') status during write cycles when CS goes high |
| GND | Ground | Reference return path for VCC and signal lines; requires low-impedance connection to system ground plane |
| VCC | Power Supply | Single supply input (2.7–5.5V); powers internal logic and charge pump for write/erase operations |
| ORG | Organization Select | Configures memory width: VCC = x16, GND = x8; internal pull-up selects x16 if floating (not valid on 1.8V variants) |
| DC | Don't Connect | No internal connection; must remain unconnected and unbonded - not usable as NC or tie-off |
Key Features
| Feature | Design Value |
|---|---|
| User-selectable memory organization | Runtime-configurable 128 × 8 or 64 × 16 layout via ORG pin - eliminates need for firmware rework when memory width requirements change |
| Self-timed write cycle | No external timing control needed; DO pin signals completion via READY/BUSY - simplifies host software polling logic |
| Multi-voltage support | Single part supports 2.7V–5.5V operation - reduces BOM count across 3.3V and 5V system variants |
| Industrial temperature range | -40°C to +85°C operation - qualified for use in motor drives, HVAC controllers, and factory automation equipment |
| Hardware write protection | EWDS instruction disables all programming modes after configuration - prevents accidental overwrites in deployed systems |
Applications
| Industrial PLC Configuration Storage | Automotive Body Control Module Calibration |
|---|---|
Use Scenario: Storing I/O mapping tables, PID tuning parameters, and fault log history in programmable logic controllers with no battery backup. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding persistent system settings accessible via SPI-compatible 3-wire interface. Use Value: Enables field-upgradable logic configurations without requiring firmware reflashing or external programming hardware. |
Use Scenario: Retaining seat position memory, mirror angle offsets, and lighting profiles across vehicle ignition cycles in body control units. IC Role / Device Role / Timing Role: Low-power serial EEPROM providing fast-read, infrequent-write storage for user-customizable vehicle settings. Use Value: Supports 100-year data retention and >1M write cycles - exceeds automotive OEM lifetime requirements for comfort features. |
| Medical Infusion Pump Parameter Backup | Smart Energy Meter Firmware Patch Storage |
Use Scenario: Safeguarding drug delivery profiles, alarm thresholds, and calibration coefficients in battery-powered infusion pumps with strict safety certification. IC Role / Device Role / Timing Role: Safety-critical nonvolatile memory storing immutable operational limits and regulatory-compliant configuration data. Use Value: ESD-hardened (>4kV HBM) and industrial-grade temperature performance ensure reliability in clinical environments. |
Use Scenario: Holding firmware patch images and cryptographic keys for secure over-the-air updates in utility-grade smart meters. IC Role / Device Role / Timing Role: Secure, tamper-resistant serial EEPROM used for authenticated code storage prior to MCU boot-time verification. Use Value: Hardware-enabled write disable (EWDS) prevents unauthorized modification of critical update payloads during deployment. |
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 (4-wire), 2.5–5.5V, 20 MHz max clock; no ORG pin or x8/x16 select | Higher density and faster interface, but requires SPI controller instead of generic GPIO bit-banging | Select when system already uses SPI peripherals and needs >1K capacity |
| CAT93C46VI-GT3 | Pin-compatible 1K 3-wire EEPROM; same 2.7–5.5V range, but only rated to 85°C (commercial temp grade) | Lacks extended industrial temperature qualification (-40°C to +85°C) | Select for cost-sensitive consumer applications where ambient temperature stays below 70°C |
Compared with M95128-WMN6TP and CAT93C46VI-GT3, the AT93C46W-10SC-2.7 uniquely combines ORG-pin memory-width flexibility, industrial temperature rating, and true 3-wire simplicity - making it optimal for resource-constrained microcontroller designs needing adaptable, ruggedized nonvolatile storage.
Availability
AT93C46W-10SC-2.7 is available at Aetrix Electronics and suitable for industrial control systems, automotive body electronics, medical infusion devices, and smart energy metering requiring stable component supply across long production lifecycles.
Supply support for AT93C46W-10SC-2.7 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 product support, documentation, and manufacturing continuity for the AT93C series EEPROMs.
The AT93C46W-10SC-2.7 belongs to Microchip's legacy serial EEPROM portfolio, designed specifically for cost-sensitive, low-pin-count embedded systems requiring reliable, low-voltage nonvolatile storage with minimal external components.
FAQ
What voltage range does the AT93C46W-10SC-2.7 support?
The AT93C46W-10SC-2.7 operates from 2.7V to 5.5V, enabling direct integration with both 3.3V and 5V microcontroller systems without level translation. This dual-voltage capability is explicitly denoted by the "-2.7" suffix in the part number and verified in the DC Characteristics table (VCC3 parameter).
How is memory organization selected on the AT93C46W-10SC-2.7?
Memory organization (128 × 8 or 64 × 16) is selected via the ORG pin: connect to VCC for x16 mode, to GND for x8 mode. If left unconnected, an internal ~1 MΩ pull-up selects x16 - though this internal pull-up is disabled on 1.8V variants (not applicable to AT93C46W-10SC-2.7).
Does the AT93C46W-10SC-2.7 support hardware write protection?
Yes - the AT93C46W-10SC-2.7 implements hardware-based write protection via the EWDS (Erase/Write Disable) instruction. Once executed, all programming instructions (WRITE, ERASE, WRAL, ERAL) are blocked until EWEN is issued again, preventing accidental overwrites in deployed systems.
What package type is used for the AT93C46W-10SC-2.7?
The AT93C46W-10SC-2.7 uses an 8-lead EIAJ SOIC package (package code 8S2), 0.200" wide, with gull-wing leads. It is distinct from the JEDEC SOIC (8S1) variant and is documented in the Ordering Information table on page 10 of the datasheet.
Can the AT93C46W-10SC-2.7 be used in automotive applications?
The AT93C46W-10SC-2.7 is rated for industrial temperature range (-40°C to +85°C) and carries automotive-grade qualification per the "Automotive Grade and Extended Temperature Devices Available" feature statement. While not AEC-Q200 certified out-of-box, its electrical and thermal specs meet common automotive body electronics requirements.
AT93C46W-10SC-2.7 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:
- 2.7V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT93C46W-10SC-2.7 FAQ
1.How can I place an order for AT93C46W-10SC-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C46W-10SC-2.7 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-2.7 reliable?
The price and inventory of AT93C46W-10SC-2.7 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-2.7 is usually 5 days.
3.What payment methods are accepted for AT93C46W-10SC-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C46W-10SC-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C46W-10SC-2.7?
AT93C46W-10SC-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C46W-10SC-2.7 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-2.7?
For technical support, including AT93C46W-10SC-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C46W-10SC-2.7 requirements.
6.How does Aetrix verify that AT93C46W-10SC-2.7 is sourced from the original manufacturer or authorized distributors?
All AT93C46W-10SC-2.7 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-2.7 meets industry standards.
7.What is the process for return or replacement of AT93C46W-10SC-2.7?
All AT93C46W-10SC-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C46W-10SC-2.7, 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-2.7 part is unused and in its original packaging.
Return procedure for AT93C46W-10SC-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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