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Microchip Technology AT93C57W-10SC
- Part No.:
- AT93C57W-10SC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT93C57W-10SC.pdf
- Description:
- IC EEPROM 2KBIT 3-WIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,796
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Product details
Overview
AT93C57W-10SC from Microchip Technology (formerly Atmel) is a 2K-bit serial EEPROM with 3-wire interface, user-selectable 256 × 8 or 128 × 16 organization via ORG pin, 2.7V–5.5V supply range, and 10 ms max self-timed write cycle. It delivers high reliability for configuration storage in industrial control modules, automotive body electronics, and embedded system boot loaders.
For engineers reviewing the AT93C57W-10SC datasheet, AT93C57W-10SC pinout, AT93C57W-10SC application, or AT93C57W-10SC equivalent, key selection criteria include low-voltage operation down to 2.7V, dual-word-width flexibility, 1 million write endurance, 100-year data retention, and compatibility with space-constrained SOIC-8 layouts.
Technical Context
The AT93C57W-10SC implements a synchronous 3-wire serial interface (CS/SK/DI/DO) with instruction-based command set including READ, WRITE, ERASE, EWEN, and EWDS. Its internal organization is dynamically selected by the ORG pin state-logic high enables 128 × 16 mode, logic low selects 256 × 8 mode-enabling flexible byte- or word-oriented access without hardware redesign.
Write operations are self-timed with no external erase step required; the DO pin provides READY/BUSY status during active programming when CS is asserted after tCS ≥ 250 ns. The device supports clock rates up to 2 MHz at 5V and scales down to 250 kHz at 1.8V, with timing parameters fully characterized across –40°C to +85°C industrial temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2048 bits (256 × 8 or 128 × 16 organization) |
| Supply Voltage Range | 2.7V to 5.5V - enables direct integration into 3.3V and 5V systems without level-shifting |
| Max Clock Frequency | 2 MHz at VCC = 5V - supports fast configuration reads in time-critical boot sequences |
| Write Cycle Time | 10 ms maximum - deterministic latency for firmware update or calibration storage |
| Endurance | 1 million write cycles - suitable for dynamic parameter logging in field-deployed equipment |
| Data Retention | 100 years at 25°C - ensures long-term validity of stored calibration, serial numbers, or security keys |
| Operating Temperature | –40°C to +85°C - qualified for industrial and automotive under-hood applications |
Pinout & Package
AT93C57W-10SC is housed in an 8-lead JEDEC-standard SOIC package (8S1), 0.150" wide, with gull-wing leads and standard 1.27 mm pitch. Pin 1 is marked by a beveled corner or dot; the package is RoHS-compliant and moisture-sensitive level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable for serial communication; must remain low throughout instruction and address/data transfer |
| SK | Serial Clock | Synchronizes all data transfers; rising edge latches DI, falling edge outputs DO |
| DI | Data Input | Receives start bit, op code, address, and write data; sampled on SK rising edge |
| DO | Data Output | Drives read data or READY/BUSY status; high-impedance when CS is high or during write cycle |
| VCC | Power Supply | Primary power rail; decoupling capacitor (0.1 µF) required within 10 mm of pin |
| GND | Ground | Reference for all I/O and internal circuitry; must be connected to system ground plane |
| ORG | Organization Select | Logic high → 128 × 16 mode; logic low → 256 × 8 mode; unconnected defaults to x16 via internal pull-up |
| DC | Don't Connect | No internal connection; must be left floating or tied to GND/VCC only if required by board layout constraints |
Key Features
| Feature | Design Value |
|---|---|
| User-selectable memory organization | Hardware-configurable 256 × 8 or 128 × 16 layout eliminates need for software byte-swapping or address remapping |
| Self-timed write cycle | No external timing control or polling overhead required - simplifies host firmware and reduces CPU load |
| Write-enable security protocol | EWEN/EWDS instructions prevent accidental writes, enabling robust field updates without risk of corruption |
| Multi-voltage compatibility | Single part supports 2.7V, 2.5V, and 5V systems - reduces BOM count across product variants |
| Industrial temperature qualification | Guaranteed operation from –40°C to +85°C - validated for use in motor control, HVAC, and telematics units |
Applications
| Industrial Sensor Calibration Storage | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain coefficients and linearization tables for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding persistent sensor compensation data accessed at power-on reset. Use Value: Enables plug-and-play sensor replacement with zero recalibration; leverages 100-year retention and 1M-cycle endurance for lifetime field serviceability. |
Use Scenario: Holding door lock/unlock settings, mirror position memory, and lighting configuration profiles in vehicle BCMs. IC Role / Device Role / Timing Role: Serial configuration EEPROM interfaced to 8-bit microcontroller over minimal 3-wire bus, reducing PCB routing complexity. Use Value: Supports 2.7V operation during cold-cranking conditions and withstands automotive thermal cycling per AEC-Q100 stress profiles. |
| Embedded System Bootloader Parameters | Medical Device Usage Log Storage |
Use Scenario: Storing bootloader jump addresses, firmware version flags, and secure boot keys in medical imaging or diagnostic equipment. IC Role / Device Role / Timing Role: Trusted nonvolatile storage for critical boot-time variables, isolated from main application flash to prevent corruption. Use Value: Dual organization (x8/x16) allows compact storage of both byte-aligned flags and 16-bit checksums without wasted space. |
Use Scenario: Recording timestamped usage events, calibration history, and error counters in portable diagnostic devices. IC Role / Device Role / Timing Role: Low-power serial EEPROM accessed intermittently by ARM Cortex-M0+ MCU during idle periods. Use Value: 0.1 µA standby current at 1.8V extends battery life in battery-powered instruments while maintaining full 2K-bit capacity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95256-WMN6TP | 256 Kbit SPI interface, 5V-only supply (4.5–5.5V), no ORG pin or dual organization | Higher density but lacks voltage flexibility and hardware-configurable word width | Select when SPI bus is already used and >2K storage is needed; not drop-in due to interface and pinout mismatch |
| STK12C68-55I | NVSRAM with parallel interface, 8K × 8 organization, 55 ns access, requires external backup battery | Byte-level random access vs. serial sequential access; different power architecture | Choose for ultra-fast read/write in real-time control loops where serial latency is unacceptable |
Compared with M95256-WMN6TP and STK12C68-55I, the AT93C57W-10SC uniquely balances low-voltage operation, hardware-selectable organization, and minimal 3-wire footprint-making it optimal for cost- and space-sensitive industrial and automotive designs requiring <4Kbit nonvolatile storage.
Availability
AT93C57W-10SC is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive body control modules, embedded bootloader configuration, and medical device usage logging requiring stable component supply across extended product lifecycles.
Supply support for AT93C57W-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 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 AT93C57W-10SC belongs to Microchip's legacy serial EEPROM product line, designed specifically for low-pin-count, low-power configuration storage in resource-constrained embedded systems where reliability and voltage flexibility are critical.
FAQ
What is the exact memory organization supported by AT93C57W-10SC?
The AT93C57W-10SC supports two user-selectable configurations: 256 words × 8 bits or 128 words × 16 bits. The ORG pin determines the mode-logic high selects x16, logic low selects x8. This dual organization is confirmed in the AT93C57-specific instruction set and timing diagrams on pages 5 and 7 of the datasheet.
Does AT93C57W-10SC support 1.8V operation?
No, AT93C57W-10SC does not support 1.8V operation. Per the AT93C57 ordering information on page 13 and DC characteristics table on page 3, this variant is rated for 2.7V to 5.5V only. The "-2.7" suffix explicitly denotes the 2.7V minimum supply; 1.8V versions exist only for AT93C46 (e.g., AT93C46-10SC-1.8) and are not offered for AT93C57.
What package type is used for AT93C57W-10SC?
AT93C57W-10SC uses an 8-lead JEDEC-standard SOIC package (designated 8S1), 0.150" wide, with gull-wing leads and 1.27 mm pitch. This is confirmed in the AT93C57 ordering information table (page 13) and packaging drawings (page 15), where "W" in the part number indicates EIAJ SOIC (8S2) is not used for this variant.
How is write protection implemented on AT93C57W-10SC?
AT93C57W-10SC uses instruction-based write protection: the Erase/Write Enable (EWEN) instruction must be issued before any WRITE or ERASE command, and Erase/Write Disable (EWDS) disables further programming until the next EWEN. This prevents accidental writes during power transients or firmware errors, and is detailed in the Functional Description section (page 6).
Is AT93C57W-10SC qualified for automotive applications?
AT93C57W-10SC is specified for industrial temperature range (–40°C to +85°C) and carries the "I" suffix in its full ordering row (AT93C57W-10SC-2.7), confirming industrial qualification. While not AEC-Q200 certified out-of-box, its electrical and thermal specs meet baseline requirements for non-safety-critical automotive modules like interior lighting or seat controls when validated per customer qualification protocols.
AT93C57W-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:
- 2Kbit
- Memory Organization:
- 256 x 8, 128 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 (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT93C57W-10SC FAQ
1.How can I place an order for AT93C57W-10SC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C57W-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 AT93C57W-10SC reliable?
The price and inventory of AT93C57W-10SC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT93C57W-10SC is usually 5 days.
3.What payment methods are accepted for AT93C57W-10SC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C57W-10SC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C57W-10SC?
AT93C57W-10SC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C57W-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 AT93C57W-10SC?
For technical support, including AT93C57W-10SC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C57W-10SC requirements.
6.How does Aetrix verify that AT93C57W-10SC is sourced from the original manufacturer or authorized distributors?
All AT93C57W-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 AT93C57W-10SC meets industry standards.
7.What is the process for return or replacement of AT93C57W-10SC?
All AT93C57W-10SC units undergo pre-shipment inspection (PSI). If there is an issue with AT93C57W-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 AT93C57W-10SC part is unused and in its original packaging.
Return procedure for AT93C57W-10SC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT93C57W-10SC Tags
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