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Microchip Technology AT93C57W-10SI-1.8
- Part No.:
- AT93C57W-10SI-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT93C57W-10SI-1.8.pdf
- Description:
- IC EEPROM 2KBIT 3-WIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,017
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Product details
Overview
AT93C57W-10SI-1.8 from Microchip Technology (formerly Atmel) is a 2K-bit, 3-wire serial EEPROM with user-selectable 256 × 8 or 128 × 16 organization, operating from 1.8V to 5.5V supply, featuring 10 ms max self-timed write cycle and 1 million write endurance. It serves as nonvolatile configuration storage in low-power industrial sensors and automotive body control modules.
For engineers reviewing the AT93C57W-10SI-1.8 datasheet, AT93C57W-10SI-1.8 pinout, AT93C57W-10SI-1.8 application, or AT93C57W-10SI-1.8 equivalent, this page delivers verified electrical specs, SOIC-8 pin mapping, low-voltage timing constraints, and validated alternatives for industrial-grade embedded design.
Technical Context
The AT93C57W-10SI-1.8 implements a synchronous 3-wire serial interface (CS/SK/DI/DO) with ORG pin-controlled memory organization and no external erase cycle required. Its instruction set includes READ, WRITE, ERASE, EWEN, EWDS, ERAL, and WRAL - all initiated by rising-edge CS and validated for 1.8V operation.
At VCC = 1.8V, it supports 250 kHz max clock frequency (fSK), 1000 ns minimum SK high/low time, and 0.1 µA standby current (ISB1). The DO pin provides READY/BUSY status during write cycles when CS is asserted post-instruction, enabling host synchronization without polling overhead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2048 bits (256 × 8 or 128 × 16 organization) |
| Supply Voltage Range | 1.8V to 5.5V - enables direct interfacing with 1.8V logic and mixed-voltage systems |
| Write Cycle Time | ≤10 ms - self-timed; eliminates need for external timing control or wait states |
| Endurance | 1 million write cycles - supports frequent calibration or runtime parameter updates |
| Data Retention | 100 years at 25°C - ensures long-term reliability in unattended equipment |
| Operating Temperature | -40°C to +85°C - qualified for industrial ambient environments |
| Interface | 3-wire serial (CS/SK/DI/DO) - minimal GPIO usage; no SPI hardware required |
Pinout & Package
AT93C57W-10SI-1.8 is housed in an 8-lead JEDEC SOIC package (8S1), 0.150" wide, with standard pinout (non-rotated). Pin 1 is CS, pin 2 is SK, pin 3 is DI, pin 4 is DO, pin 5 is VCC, pin 6 is DC (no connect), pin 7 is ORG, and pin 8 is GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; must be held low for entire instruction sequence; initiates READY/BUSY status readout |
| SK | Serial Clock | Synchronizes data transfer; rising edge samples DI, falling edge outputs DO; tSKH/tSKL ≥1000 ns at 1.8V |
| DI | Data Input | Receives start bit, op code, address, and data; setup/hold times ≥400 ns relative to SK at 1.8V |
| DO | Data Output | Serial output for READ; tri-state during idle; indicates READY ('1') or BUSY ('0') during write |
| VCC | Power Supply | 1.8V–5.5V input; powers internal logic and charge pump; decoupling capacitor required |
| ORG | Organization Select | High = 128 × 16 mode; low = 256 × 8 mode; unconnected defaults to x16 (not supported on 1.8V variants) |
| GND | Ground Reference | Return path for VCC and I/O; must be low-impedance connection to minimize noise coupling |
| DC | No Connect | Internally unused; must remain floating; not bonded or connected in die |
Key Features
| Feature | Design Value |
|---|---|
| 1.8V Operation | Full functionality down to 1.8V supply - eliminates level-shifting in ultra-low-power microcontroller designs |
| User-Selectable Organization | Hardware-configurable 256×8 or 128×16 layout - optimizes byte- vs word-oriented firmware access patterns |
| Self-Timed Write Cycle | No external timing circuitry needed; host reads DO pin for completion status - simplifies software driver implementation |
| Industrial Temperature Range | -40°C to +85°C operation - certified for deployment in factory automation and vehicle ECUs |
| ESD Protection | ≥4000V HBM - enhances robustness against handling and board-level electrostatic discharge events |
Applications
| Industrial Sensor Calibration Storage | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Storing temperature-compensation coefficients and sensor offset values in factory-calibrated pressure transducers. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed during power-up initialization via 3-wire interface. Use Value: Enables field-replaceable sensor heads with unique calibration data retained across 100-year lifetime without battery backup. |
Use Scenario: Holding door lock actuator timing profiles and seat position memory in 12V automotive BCMs. IC Role / Device Role / Timing Role: Low-voltage EEPROM interfaced to 1.8V microcontroller I/O pins for secure parameter storage. Use Value: Supports 1.8V logic compatibility and 1M endurance for repeated seat/mirror adjustment logging over vehicle lifetime. |
| Medical Infusion Pump Settings | Smart Energy Meter Configuration |
Use Scenario: Retaining drug library parameters, dose limits, and alarm thresholds in battery-powered infusion pumps. IC Role / Device Role / Timing Role: Fail-safe configuration store accessed only during boot or maintenance mode. Use Value: Guarantees 100-year data retention and 1M write cycles for critical safety-critical settings without volatile RAM backup. |
Use Scenario: Storing tariff schedules, metering constants, and communication credentials in ANSI C12.22-compliant smart meters. IC Role / Device Role / Timing Role: Tamper-resistant nonvolatile memory with ESD-hardened I/O for utility-grade field deployment. Use Value: Meets IEC 61000-4-2 Level 4 (8 kV contact) immunity requirements via integrated 4 kV HBM protection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95M02-DRMN6TP/K | 2 Mbit SPI interface, 1.8V–5.5V, 5ms write cycle, 400 kHz min clock at 1.8V | Requires SPI peripheral instead of generic GPIO bit-banging; higher density but larger footprint | Choose for systems already using SPI peripherals and requiring >2 Kbit capacity |
| BR24G02FJ-WE2 | 2 Kbit I²C interface, 1.7V–5.5V, 5ms write cycle, supports 1 MHz I²C at 1.8V | Uses two-wire bus with address pins; requires I²C master; lacks ORG pin flexibility | Prefer when board uses I²C infrastructure and needs lower pin count than 3-wire |
Compared with AT93C57W-10SI-1.8, M95M02-DRMN6TP/K offers higher density and faster writes but demands SPI hardware; BR24G02FJ-WE2 reduces pin count via I²C yet forfeits organization selection and READY/BUSY signaling - making AT93C57W-10SI-1.8 optimal for GPIO-constrained, low-power, and flexible-configuration designs.
Availability
AT93C57W-10SI-1.8 is available at Aetrix Electronics and suitable for industrial sensor calibration storage, automotive body control modules, medical infusion pump settings, and smart energy meter configuration requiring stable component supply and guaranteed long-term availability.
Supply support for AT93C57W-10SI-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 product support, qualification, and manufacturing continuity for the AT93C family.
The AT93C57 belongs to Microchip's legacy serial EEPROM product line, designed specifically for cost-sensitive, low-pin-count, and ultra-low-power embedded systems requiring reliable nonvolatile storage without complex interface controllers.
FAQ
What is the maximum clock frequency supported by AT93C57W-10SI-1.8 at 1.8V?
The AT93C57W-10SI-1.8 supports a maximum SK clock frequency of 250 kHz at VCC = 1.8V, as specified in the AC Characteristics table (fSK min = 0.25 MHz). This is enforced by minimum tSKH and tSKL timing requirements of 1000 ns each, ensuring reliable data sampling and output stability under low-voltage conditions.
Does AT93C57W-10SI-1.8 support both x8 and x16 memory organization at 1.8V operation?
No - the ORG pin functionality for selecting between 256 × 8 and 128 × 16 organization is explicitly disabled on 1.8V versions of the AT93C57, including AT93C57W-10SI-1.8. Per the datasheet note on page 2, "This feature is not available on 1.8V devices." The device operates in fixed 256 × 8 mode at 1.8V.
Can AT93C57W-10SI-1.8 be used in automotive applications requiring AEC-Q100 qualification?
AT93C57W-10SI-1.8 is rated for industrial temperature range (-40°C to +85°C) and carries no AEC-Q100 qualification. While it meets extended temperature and reliability specs (1M endurance, 100-year retention), automotive-grade use requires the explicitly qualified AT93C57-10XU variant (e.g., AT93C57-10XU-1.8) with full AEC-Q100 Grade 2 certification.
What is the purpose of the DC pin on AT93C57W-10SI-1.8?
The DC (Don't Connect) pin on AT93C57W-10SI-1.8 is an unconnected terminal - not bonded to the die and electrically inactive. It must remain floating with no PCB trace or solder connection. This pin exists due to package pinout compatibility across the AT93C46/56/57/66 family and has zero functional impact on AT93C57W-10SI-1.8 operation.
How does the READY/BUSY status reporting work on AT93C57W-10SI-1.8 during a write cycle?
During a write cycle, if CS is driven high after the instruction completes (and held low for ≥250 ns), the DO pin outputs READY (logic '1') when programming finishes or BUSY (logic '0') while still active. This allows the host to poll status without fixed delays. AT93C57W-10SI-1.8 supports this feature fully at 1.8V, with tSV ≤1000 ns per AC specs.
AT93C57W-10SI-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:
- 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:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT93C57W-10SI-1.8 FAQ
1.How can I place an order for AT93C57W-10SI-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C57W-10SI-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 AT93C57W-10SI-1.8 reliable?
The price and inventory of AT93C57W-10SI-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 AT93C57W-10SI-1.8 is usually 5 days.
3.What payment methods are accepted for AT93C57W-10SI-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C57W-10SI-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C57W-10SI-1.8?
AT93C57W-10SI-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C57W-10SI-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 AT93C57W-10SI-1.8?
For technical support, including AT93C57W-10SI-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C57W-10SI-1.8 requirements.
6.How does Aetrix verify that AT93C57W-10SI-1.8 is sourced from the original manufacturer or authorized distributors?
All AT93C57W-10SI-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 AT93C57W-10SI-1.8 meets industry standards.
7.What is the process for return or replacement of AT93C57W-10SI-1.8?
All AT93C57W-10SI-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C57W-10SI-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 AT93C57W-10SI-1.8 part is unused and in its original packaging.
Return procedure for AT93C57W-10SI-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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