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Microchip Technology AT93C57-10PC
- Part No.:
- AT93C57-10PC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT93C57-10PC.pdf
- Description:
- IC EEPROM 2KBIT 3-WIRE 2MHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,251
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Product details
Overview
AT93C57-10PC from Microchip Technology (formerly Atmel) is a 2K-bit 3-wire serial EEPROM with user-selectable organization (256 × 8 or 128 × 16), low-voltage operation (2.7V–5.5V), and self-timed write cycle (≤10 ms). It features 8-pin PDIP packaging, 1 million write cycles endurance, and 100-year data retention - deployed in industrial control panels for configuration storage and calibration parameter backup.
For engineers reviewing the AT93C57-10PC datasheet, AT93C57-10PC pinout, AT93C57-10PC application, or AT93C57-10PC equivalent, key selection criteria include voltage range compatibility (2.7V–5.5V), 2K-bit density with x8/x16 configurability, 2 MHz clock support at 5V, SOIC/PDIP package options, and automotive-grade temperature variants.
Technical Context
The AT93C57-10PC 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 internal memory organization (x8 or x16), and DO pin provides READY/BUSY status during write cycles when CS is asserted post-instruction.
It operates across commercial (0°C to +70°C) and industrial (−40°C to +85°C) temperature ranges, supports 1.8V–5.5V supply (though AT93C57-10PC variant is rated 2.7V–5.5V), and uses no external erase cycle - all programming is self-timed with tWP ≤10 ms at VCC ≥2.7V.
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 5V - supports high-speed configuration reads in real-time embedded boot sequences |
| Write Cycle Time | ≤10 ms - ensures predictable firmware update latency for field-programmable devices |
| Endurance | 1 million write cycles - suitable for dynamic parameter logging in industrial HMI systems |
| Data Retention | 100 years at 25°C - guarantees long-term reliability of stored calibration or security keys |
| ESD Protection | >4000V HBM - robust against handling and board-level electrostatic discharge events |
Pinout & Package
AT93C57-10PC is supplied in an 8-pin PDIP (Plastic Dual Inline Package), 0.300" wide, with JEDEC MS-001 BA footprint. Pin 1 is marked by notch or dot; package height ≤ 0.210" (5.33 mm), lead pitch 0.100" (2.54 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable: must be low for instruction initiation and data transfer; high state places DO in high-impedance or outputs READY/BUSY |
| SK | Serial Clock | Synchronizes all data transfers; rising edge samples DI, falling edge clocks DO; min pulse width 250 ns at 2.7V–5.5V |
| DI | Data Input | Receives start bit, op code, address, and write data; setup/hold times defined per VCC range (e.g., 100 ns at 2.7V) |
| DO | Data Output | Serially outputs read data or READY/BUSY status; high-impedance when CS high and not in status-read mode |
| GND | Ground Reference | Primary return path for VCC and I/O; requires low-impedance PCB connection to minimize noise coupling |
| VCC | Power Supply | Single-supply input (2.7V–5.5V); decoupling capacitor (0.1 µF) recommended near pin |
| 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 remain floating or tied to GND/VCC only if required by board layout constraints |
Key Features
| Feature | Design Value |
|---|---|
| User-selectable memory organization | Hardware-configurable x8 or x16 word width via ORG pin - eliminates need for software re-mapping in legacy 8-bit vs 16-bit host systems |
| Self-timed write cycle | No external timing control needed; device internally manages erase-and-write sequence - simplifies host firmware and reduces interrupt latency |
| Instruction-based security model | EWEN/EWDS commands enforce explicit enable/disable of programming - prevents accidental overwrites during power transients or noise events |
| READY/BUSY status reporting | DO pin returns logic level indicating write completion when CS is pulsed high post-WRITE - enables polling-based host synchronization without fixed delays |
| Multi-voltage compatibility | Operates from 2.7V to 5.5V - supports mixed-voltage designs and brown-out tolerant operation in battery-backed systems |
Applications
| Industrial PLC Configuration Storage | Automotive Body Control Module (BCM) Calibration |
|---|---|
Use Scenario: Storing I/O mapping tables, PID tuning parameters, and fault log history in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding persistent system settings between power cycles. Use Value: Enables field-upgradable logic behavior without firmware reflashing; 1M endurance supports daily parameter updates over 10+ years. |
Use Scenario: Retaining seat position memory, mirror angle presets, and lighting profiles in vehicle BCMs. IC Role / Device Role / Timing Role: Low-power serial NV memory accessed during wake-up sequence to restore user preferences. Use Value: 2.7V minimum VCC allows reliable operation during cold-cranking (battery dip to ~3.0V); 100-year retention ensures lifetime calibration integrity. |
| Medical Infusion Pump Setup Data | Smart Energy Meter Firmware Bootloader Keys |
Use Scenario: Securing drug library limits, alarm thresholds, and clinician access codes in Class II medical devices. IC Role / Device Role / Timing Role: Tamper-resistant parameter store with hardware write protection (EWDS) and ESD-hardened I/O. Use Value: >4000V HBM rating withstands clinical environment ESD events; x16 mode optimizes space-constrained PCB layouts. |
Use Scenario: Storing asymmetric cryptographic keys used by bootloader to verify signed firmware images. IC Role / Device Role / Timing Role: Secure nonvolatile key vault with deterministic write timing (≤10 ms) for secure boot sequencing. Use Value: Self-timed writes prevent timing side-channel attacks; 100-year retention ensures key validity across product lifecycle. |
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 (vs. AT93C57-10PC's 2K-bit 3-wire); 2.5V–5.5V supply; 5 MHz max clock | Higher density and faster interface, but requires SPI controller instead of generic GPIO-bitbanged 3-wire | Select when migrating to higher-density storage and existing SPI infrastructure is available |
| STK12C68-55I | 8K-bit NVSRAM with parallel interface; 5V-only; built-in lithium backup; 10-year retention (vs. 100-year EEPROM) | Supports true random-access reads/writes (no serial addressing), but larger footprint and higher BOM cost | Select when ultra-fast random access and byte-level write speed are critical, and 5V-only operation is acceptable |
Compared with M95256-WMN6TP and STK12C68-55I, the AT93C57-10PC offers optimal balance of minimal pin count (3-wire), ultra-long data retention, and proven reliability in space-constrained industrial nodes - making it preferred where simplicity, longevity, and low-voltage flexibility outweigh raw speed or density needs.
Availability
AT93C57-10PC is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and medical device configuration storage requiring stable component supply across extended product lifecycles.
Supply support for AT93C57-10PC 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 is part of Atmel's legacy serial EEPROM portfolio designed for cost-sensitive, low-pin-count embedded systems needing reliable nonvolatile storage with minimal MCU resource usage.
FAQ
What is the memory organization of AT93C57-10PC?
The AT93C57-10PC supports two configurable organizations: 256 words × 8 bits or 128 words × 16 bits. The ORG pin determines selection - high for x16, low for x8. If left unconnected, an internal pull-up defaults to x16 mode. This flexibility allows the same AT93C57-10PC to serve both 8-bit microcontroller buses and 16-bit data paths without redesign.
Does AT93C57-10PC require an external erase cycle before writing?
No, the AT93C57-10PC does not require a separate erase cycle. Each WRITE instruction performs automatic on-the-fly erase-and-program within its self-timed 10 ms window. The device enters the ERASE/WRITE ENABLE state only after an explicit EWEN command, ensuring data integrity and preventing unintended writes - a core behavior of the AT93C57-10PC architecture.
What is the maximum clock frequency supported by AT93C57-10PC?
The AT93C57-10PC supports up to 2 MHz SK clock frequency at VCC = 4.5V–5.5V, and lower rates at reduced voltages (1 MHz at 2.7V–5.5V). AC timing parameters like tSKH/tSKL scale with VCC - for example, minimum SK high/low time is 250 ns at 2.7V–5.5V. This ensures reliable operation across the full 2.7V–5.5V range of the AT93C57-10PC.
How does the AT93C57-10PC indicate write completion?
The AT93C57-10PC uses its DO pin to signal READY/BUSY status. After initiating a WRITE, if CS is brought high for ≥250 ns while the internal write is ongoing, DO outputs logic '0'; once complete, DO outputs logic '1'. This feature is intrinsic to the AT93C57-10PC and enables precise host synchronization without fixed delay loops.
Is AT93C57-10PC compatible with automotive temperature requirements?
The AT93C57-10PC itself is specified for commercial temperature range (0°C to +70°C), but the AT93C57-10PI variant covers −40°C to +85°C and is automotive-qualified. While AT93C57-10PC is not rated for under-hood use, its design heritage and reliability metrics (1M endurance, 100-year retention) align with automotive subsystems operating in cabin environments - always verify qualification status per specific AT93C57-10PC ordering code.
AT93C57-10PC 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT93C57-10PC FAQ
1.How can I place an order for AT93C57-10PC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C57-10PC 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 AT93C57-10PC reliable?
The price and inventory of AT93C57-10PC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT93C57-10PC is usually 5 days.
3.What payment methods are accepted for AT93C57-10PC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C57-10PC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C57-10PC?
AT93C57-10PC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C57-10PC 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 AT93C57-10PC?
For technical support, including AT93C57-10PC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C57-10PC requirements.
6.How does Aetrix verify that AT93C57-10PC is sourced from the original manufacturer or authorized distributors?
All AT93C57-10PC 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 AT93C57-10PC meets industry standards.
7.What is the process for return or replacement of AT93C57-10PC?
All AT93C57-10PC units undergo pre-shipment inspection (PSI). If there is an issue with AT93C57-10PC, 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 AT93C57-10PC part is unused and in its original packaging.
Return procedure for AT93C57-10PC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT93C57-10PC Tags
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