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Microchip Technology AT93C57-10PI
- Part No.:
- AT93C57-10PI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT93C57-10PI.pdf
- Description:
- IC EEPROM 2KBIT 3-WIRE 2MHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,934
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Product details
Overview
AT93C57-10PI from Microchip Technology (formerly Atmel) is a 2-kbit serial EEPROM with 3-wire interface, user-selectable 256 × 8 or 128 × 16 organization, 2.7V–5.5V supply range, and industrial temperature rating (−40°C to +85°C). It delivers self-timed write cycles (≤10 ms), 1 million write endurance, and 100-year data retention for configuration storage in embedded controllers and power management systems.
For engineers reviewing the AT93C57-10PI datasheet, AT93C57-10PI pinout, AT93C57-10PI application, or AT93C57-10PI equivalent, this page provides verified electrical specs, package mapping, functional timing behavior, and real-world use context for industrial-grade serial memory selection.
Technical Context
The AT93C57-10PI implements a synchronous 3-wire serial interface (CS, SK, DI/DO) with instruction-based command set including READ, WRITE, ERASE, EWEN, and EWDS. Its ORG pin selects between x8 and x16 memory organization, enabling flexible byte- or word-oriented access without external logic.
It operates across VCC = 2.7V–5.5V with guaranteed AC timing at fSK ≤ 1 MHz (2.7V), supports READY/BUSY status polling via DO during write/erase, and requires no pre-erase cycle-enabling direct byte/word programming after EWEN activation.
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 - supports mixed-voltage system integration without level shifters |
| Max Clock Frequency | 1 MHz at 2.7V - ensures reliable timing margin in low-power industrial environments |
| Write Cycle Time | ≤10 ms - enables deterministic firmware update latency for boot configuration writes |
| Endurance | 1 million write cycles - sufficient for >10 years of daily calibration updates in field-deployed equipment |
| Data Retention | 100 years at 85°C - guarantees long-term parameter persistence in unpowered storage |
| Operating Temperature | −40°C to +85°C - qualified for industrial control, motor drives, and automotive body electronics |
Pinout & Package
AT93C57-10PI is supplied in an 8-pin PDIP (8P3) package with 0.300" width, suitable for through-hole prototyping and legacy industrial PCBs. Pin functions are electrically identical across SOIC and TSSOP variants but physically mapped per JEDEC standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; must be held low for full instruction sequence; high state triggers READY/BUSY status read on DO |
| SK | Serial Clock | Synchronous edge-triggered input; rising edge latches DI, falling edge clocks DO; tSKH/tSKL ≥ 250 ns at 2.7V |
| DI | Data Input | Serial instruction/address/data input; accepts 7-bit address + 8/16-bit data depending on ORG setting |
| DO | Data Output | Open-drain output; returns read data or READY ('1') / BUSY ('0') status during write/erase |
| GND | Ground Reference | Return path for VCC and all I/O; decoupling capacitor required within 10 mm of VCC/GND pins |
| VCC | Power Supply | 2.7V–5.5V main supply; internal regulation enables stable core operation across voltage range |
| ORG | Organization Select | High = 128 × 16 mode; low = 256 × 8 mode; unconnected defaults to x16 via internal ~1 MΩ pull-up |
| DC | No Connect | Internally unused; must be left floating or tied to GND/VCC per layout best practice - no electrical function |
Key Features
| Feature | Design Value |
|---|---|
| User-selectable memory organization | Hardware-configurable x8 or x16 mode via ORG pin - eliminates need for software bit-packing in host MCU |
| Self-timed write/erase | No external timing control needed; DO pin provides real-time READY/BUSY feedback - simplifies host firmware state machine |
| Low-voltage operation | Functional down to 2.7V with full AC/DC specs - enables direct interface with 3.3V microcontrollers without level translation |
| Industrial temperature grade | Qualified from −40°C to +85°C - meets extended thermal requirements for factory automation and outdoor electronics |
| ESD protection | >4000V HBM - enhances robustness during board handling and in-system programming |
Applications
| Industrial Sensor Calibration | Motor Drive Configuration |
|---|---|
Use Scenario: Storing factory-calibrated sensor offset/gain coefficients and linearization tables in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed during power-on initialization via SPI-compatible 3-wire bus. Use Value: Enables field-replaceable sensor modules with persistent calibration data retained across 100+ years without battery backup. |
Use Scenario: Holding motor commutation angles, current limits, and PID tuning parameters in brushless DC drive inverters. IC Role / Device Role / Timing Role: Serial configuration memory interfaced to ARM Cortex-M4 host MCU using GPIO bit-banged 3-wire protocol. Use Value: Supports safe re-tuning during maintenance without firmware reflashing; 1M endurance allows >200 recalibrations over product lifetime. |
| Power Supply Sequencing | Embedded System Bootloader Settings |
Use Scenario: Storing voltage rail sequencing delays and fault thresholds in multi-rail telecom power supplies. IC Role / Device Role / Timing Role: Standalone EEPROM providing startup configuration to dedicated PMIC sequencer IC. Use Value: Eliminates external OTP fuses; 2.7V min VCC ensures reliable read during brown-out conditions before main rails stabilize. |
Use Scenario: Holding bootloader jump address, secure boot flag, and watchdog timeout settings in medical device SoCs. IC Role / Device Role / Timing Role: Early-boot nonvolatile memory accessed before DRAM initialization, supporting fail-safe recovery paths. Use Value: 100-year retention guarantees integrity of critical boot parameters across device shelf life and repeated thermal cycling. |
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 | 4-kbit SPI interface (4-wire), 2.5V–5.5V, 5ms max write time, SO8 package only | Requires SPI master with dedicated CS/SCK/MOSI/MISO; no ORG pin flexibility | Choose when migrating to SPI-standard interface and higher density is acceptable |
| STK12C68-55I | NVSRAM (64kbit), parallel interface, 5V-only, built-in lithium backup, DIP28 package | Byte-write without erase cycle; volatile SRAM + nonvolatile shadow; higher pin count and cost | Choose only if sub-microsecond random-access writes are mandatory and board space permits larger package |
Compared with M95256-WMN6TP and STK12C68-55I, the AT93C57-10PI offers unique 3-wire simplicity, hardware-selectable organization, and proven industrial reliability at lower pin count and BOM cost - making it optimal for resource-constrained embedded controllers where interface minimalism and long-term data integrity are primary.
Availability
AT93C57-10PI is available at Aetrix Electronics and suitable for industrial sensor calibration, motor drive configuration, and power supply sequencing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AT93C57-10PI 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 AT93Cxx family.
The AT93C57 belongs to Atmel's legacy serial EEPROM product line, designed specifically for low-pin-count, low-power, industrial-grade configuration storage in cost-sensitive embedded systems.
FAQ
What is the maximum clock frequency supported by AT93C57-10PI at 2.7V?
The AT93C57-10PI supports a maximum SK clock frequency of 1 MHz when operated at VCC = 2.7V, as specified in the AC Characteristics table under "fSK" with test condition "2.7V ≤ VCC ≤ 5.5V". This ensures robust timing margins in low-voltage industrial applications where clock stability may vary.
Does AT93C57-10PI require an external erase cycle before writing?
No, the AT93C57-10PI does not require a separate erase cycle before writing. Its self-timed WRITE instruction automatically handles both erase and program operations internally. The device only requires an EWEN instruction to enable programming prior to WRITE or ERASE commands.
How is memory organization selected on AT93C57-10PI?
Memory organization on the AT93C57-10PI is selected via the ORG pin: tying ORG to VCC configures 128 × 16 (x16) mode; tying ORG to GND configures 256 × 8 (x8) mode. If left unconnected, an internal ~1 MΩ pull-up selects x16 mode - confirmed in the Functional Description section.
What is the standby current consumption of AT93C57-10PI at 2.7V?
At VCC = 2.7V and CS = 0V, the AT93C57-10PI exhibits a standby current (ISB3) of 6.0 µA (typical) to 10.0 µA (max), as specified in the DC Characteristics table. This ultra-low quiescent draw supports battery-backed or energy-harvesting systems requiring multi-year shelf life.
Is AT93C57-10PI pin-compatible with AT93C46-10PI?
No, AT93C57-10PI is not pin-compatible with AT93C46-10PI. Although both share identical 8-pin PDIP/SOIC/TSSOP footprints and signal names (CS, SK, DI, DO, VCC, GND, ORG, DC), their instruction sets differ: AT93C57 uses 8-bit addresses (A7–A0) versus AT93C46's 7-bit addressing (A6–A0), requiring host firmware adaptation even with identical physical layout.
AT93C57-10PI 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:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT93C57-10PI FAQ
1.How can I place an order for AT93C57-10PI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C57-10PI 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 reliable?
The price and inventory of AT93C57-10PI 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 is usually 5 days.
3.What payment methods are accepted for AT93C57-10PI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C57-10PI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C57-10PI?
AT93C57-10PI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C57-10PI 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?
For technical support, including AT93C57-10PI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C57-10PI requirements.
6.How does Aetrix verify that AT93C57-10PI is sourced from the original manufacturer or authorized distributors?
All AT93C57-10PI 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 meets industry standards.
7.What is the process for return or replacement of AT93C57-10PI?
All AT93C57-10PI units undergo pre-shipment inspection (PSI). If there is an issue with AT93C57-10PI, 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 part is unused and in its original packaging.
Return procedure for AT93C57-10PI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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