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Microchip Technology AT93C57-10PI-1.8
- Part No.:
- AT93C57-10PI-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT93C57-10PI-1.8.pdf
- Description:
- IC EEPROM 2KBIT 3-WIRE 2MHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,972
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Product details
Overview
AT93C57-10PI-1.8 from Microchip Technology (formerly Atmel) is a 2K-bit 3-wire serial EEPROM with user-selectable 256 × 8 or 128 × 16 organization, 1.8V to 5.5V supply range, 10 ms max self-timed write cycle, and industrial temperature rating (−40°C to +85°C). It serves as nonvolatile configuration storage in embedded controllers, power management units, and sensor calibration modules.
For engineers reviewing the AT93C57-10PI-1.8 datasheet, AT93C57-10PI-1.8 pinout, AT93C57-10PI-1.8 application, or AT93C57-10PI-1.8 equivalent, this page delivers verified electrical specs, validated pin functions, confirmed low-voltage timing behavior at 1.8V, and real-world use cases for industrial-grade serial EEPROM selection.
Technical Context
The AT93C57-10PI-1.8 implements a synchronous 3-wire interface (CS, SK, DI/DO) with instruction-based command protocol including READ, WRITE, ERASE, EWEN, and EWDS. Its ORG pin selects between 8-bit and 16-bit word organization, though internal pullup-driven x16 mode is disabled on 1.8V variants per datasheet note.
Operation requires explicit Erase/Write Enable (EWEN) before programming; READY/BUSY status is reported via DO during CS high after tCS ≥ 250 ns. Write endurance is rated at 1 million cycles with 100-year data retention, and ESD protection exceeds 4000V HBM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2048 bits (256 × 8 or 128 × 16 words) |
| Supply Voltage Range | 1.8V to 5.5V - supports direct interfacing with 1.8V logic without level shifters |
| Max Clock Frequency | 0.25 MHz at 1.8V - defines minimum SK period of 4000 ns for reliable timing margin |
| Write Cycle Time | 10 ms maximum - determines worst-case blocking time for host firmware during write operations |
| Standby Current | 0.1 µA at VCC = 1.8V - enables ultra-low-power operation in battery-backed systems |
| Data Retention | 100 years - ensures long-term reliability in unattended industrial deployments |
| Endurance | 1 million write cycles - supports frequent recalibration or logging in field-upgradeable devices |
Pinout & Package
AT93C57-10PI-1.8 is supplied in an 8-pin PDIP (8P3) package with 0.300" body width and standard through-hole mounting. Pinout matches JEDEC SOIC (8S1) and EIAJ SOIC (8S2) footprints for layout compatibility across package variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; must be held low for full instruction sequence; DO reflects READY/BUSY when pulsed high post-write |
| SK | Serial Clock | Synchronous edge-triggered input; rising edge latches DI, falling edge samples DO; tSKH/tSKL ≥ 1000 ns at 1.8V |
| DI | Data Input | Serial command/data input; accepts 7-bit address + opcode for READ/WRITE/ERASE; setup/hold times scale with VCC |
| DO | Data Output | Open-drain output; drives data or READY/BUSY status; requires external pullup; high-impedance when CS high |
| VCC | Power Supply | 1.8V–5.5V single supply; decoupling capacitor required per layout guidelines |
| GND | Ground | Reference return path for all I/O and supply; separate analog/digital ground not required |
| ORG | Organization Select | Logic-high = 128 × 16 mode; logic-low = 256 × 8 mode; unconnected defaults to x16 but disabled on 1.8V parts |
| DC | No Connect | Internally unused; must be left floating or tied to GND/VCC per board design rules - no electrical function |
Key Features
| Feature | Design Value |
|---|---|
| 1.8V operation support | Enables direct integration with ultra-low-voltage microcontrollers and ASICs without voltage translation |
| User-selectable memory organization | Runtime-configurable 8-bit or 16-bit word access simplifies firmware alignment for diverse host architectures |
| Self-timed write cycle | Eliminates need for external write timing control or polling overhead beyond READY/BUSY status check |
| Industrial temperature range | Rated for −40°C to +85°C operation - suitable for automotive body electronics and factory automation |
| High ESD immunity | 4000V HBM rating reduces susceptibility to handling damage and system-level ESD events |
Applications
| Smart Energy Meters | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Storing tariff tables, calibration coefficients, and firmware update metadata across power cycles. IC Role / Device Role / Timing Role: Nonvolatile configuration register providing persistent parameter storage accessible via SPI-compatible 3-wire bus. Use Value: 1.8V operation allows co-location with low-power metrology ICs; 100-year retention ensures lifetime data integrity without battery backup. |
Use Scenario: Holding channel-specific gain/offset trim values and module identification data in modular I/O racks. IC Role / Device Role / Timing Role: Serial configuration EEPROM interfaced to FPGA or ARM-based controller for runtime calibration loading. Use Value: 1 million endurance cycles support field recalibration; industrial temp rating guarantees reliability in cabinet-mounted control hardware. |
| Automotive Body Control Units | Medical Diagnostic Sensors |
Use Scenario: Saving seat position presets, mirror angles, and lighting profiles in vehicle convenience systems. IC Role / Device Role / Timing Role: Low-voltage EEPROM storing user preferences and system state variables accessed during boot and runtime. Use Value: 0.1 µA standby current extends battery life in always-on modules; 1.8V compatibility aligns with modern CAN/LIN transceiver I/O levels. |
Use Scenario: Retaining sensor offset compensation, linearization parameters, and usage history in portable diagnostic tools. IC Role / Device Role / Timing Role: Calibration memory element read at startup to correct analog front-end inaccuracies. Use Value: High reliability (1M cycles, 100-yr retention) meets medical device longevity requirements; small 8-pin PDIP footprint fits compact handheld enclosures. |
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, 2.5–5.5V supply, 5 MHz clock, WLCSP package | Higher density and faster interface; incompatible pinout and protocol; requires SPI driver stack | Select when migrating to SPI-based designs with >2Kbit needs and PCB space constraints favoring WLCSP |
| STK12C68-5BI | 8Kbit NVSRAM with parallel interface, 4.5–5.5V only, built-in lithium backup | Parallel bus, volatile+nonvolatile hybrid architecture, no 1.8V support, higher power consumption | Choose only if existing design uses parallel EEPROM/NVRAM and requires byte-level random access with zero write latency |
Compared with M95256-WMN6TP and STK12C68-5BI, the AT93C57-10PI-1.8 provides optimal balance of ultra-low-voltage operation, proven 3-wire simplicity, industrial temperature resilience, and cost-effective PDIP packaging - making it the preferred choice for legacy-compatible, resource-constrained embedded systems requiring robust 2Kbit nonvolatile storage.
Availability
AT93C57-10PI-1.8 is available at Aetrix Electronics and suitable for smart energy meters, industrial PLC I/O modules, and automotive body control units requiring stable component supply across extended product lifecycles.
Supply support for AT93C57-10PI-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 technical and manufacturing continuity for the AT93C family of serial EEPROMs.
The AT93C57 belongs to Atmel's legacy 3-wire serial EEPROM product line, designed specifically for cost-sensitive, low-power embedded systems needing simple, reliable nonvolatile storage with minimal pin count and firmware overhead.
FAQ
What is the maximum clock frequency supported by AT93C57-10PI-1.8 at 1.8V?
The AT93C57-10PI-1.8 supports a maximum SK clock frequency of 0.25 MHz when operated at 1.8V, corresponding to a minimum SK period of 4000 ns. This value is specified in the AC Characteristics table under fSK for 1.8V ≤ VCC ≤ 5.5V, and reflects guaranteed timing margins for reliable communication in low-voltage industrial environments where the AT93C57-10PI-1.8 is commonly deployed.
Can the ORG pin on AT93C57-10PI-1.8 be left unconnected?
No - the ORG pin on AT93C57-10PI-1.8 must be actively driven to VCC or GND. Unlike higher-voltage variants, the 1.8V version disables the internal pullup that would otherwise default to x16 organization. Leaving ORG floating results in undefined memory organization behavior, potentially causing read/write failures. The AT93C57-10PI-1.8 datasheet explicitly states this limitation in the "Absolute Maximum Ratings" section footnote.
Does AT93C57-10PI-1.8 require an external pull-up resistor on the DO pin?
Yes, AT93C57-10PI-1.8 requires an external pull-up resistor on the DO pin because it features an open-drain output structure. A typical value is 4.7 kΩ to VCC, ensuring valid logic-high levels during READ operations and READY/BUSY status reporting. This requirement is consistent across all AT93C46/56/57/66 variants and is documented in the "Pin Capacitance" and "DC Characteristics" sections of the AT93C57-10PI-1.8 datasheet.
What is the write endurance specification for AT93C57-10PI-1.8?
The AT93C57-10PI-1.8 is rated for 1 million write cycles per memory location under specified conditions (5.0V, 25°C, page mode). This endurance figure is characterized and published in the "DC Characteristics" table of the official datasheet. It applies uniformly across the entire memory array and forms the basis for reliability calculations in applications such as field-upgradable firmware storage or periodic sensor calibration updates using the AT93C57-10PI-1.8.
Is AT93C57-10PI-1.8 compatible with the same PCB footprint as AT93C46-10PI-1.8?
Yes, AT93C57-10PI-1.8 shares identical pinout, package dimensions, and mechanical specifications with AT93C46-10PI-1.8 - both use the 8P3 PDIP package with 0.300" width and standardized lead spacing. However, firmware must be updated to handle the expanded 8-bit address space (A7–A0 vs. A6–A0) and revised instruction timing; the AT93C57-10PI-1.8 is not a drop-in software replacement despite physical footprint compatibility.
AT93C57-10PI-1.8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT93C57-10PI-1.8 FAQ
1.How can I place an order for AT93C57-10PI-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C57-10PI-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 AT93C57-10PI-1.8 reliable?
The price and inventory of AT93C57-10PI-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 AT93C57-10PI-1.8 is usually 5 days.
3.What payment methods are accepted for AT93C57-10PI-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C57-10PI-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C57-10PI-1.8?
AT93C57-10PI-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C57-10PI-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 AT93C57-10PI-1.8?
For technical support, including AT93C57-10PI-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C57-10PI-1.8 requirements.
6.How does Aetrix verify that AT93C57-10PI-1.8 is sourced from the original manufacturer or authorized distributors?
All AT93C57-10PI-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 AT93C57-10PI-1.8 meets industry standards.
7.What is the process for return or replacement of AT93C57-10PI-1.8?
All AT93C57-10PI-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C57-10PI-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 AT93C57-10PI-1.8 part is unused and in its original packaging.
Return procedure for AT93C57-10PI-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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