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Microchip Technology AT93C57-10SC-2.5
- Part No.:
- AT93C57-10SC-2.5
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT93C57-10SC-2.5.pdf
- Description:
- IC EEPROM 2KBIT 3-WIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,918
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Product details
Overview
AT93C57-10SC-2.5 from Microchip Technology (formerly Atmel) is a 2K-bit 3-wire serial EEPROM with user-selectable 256 × 8 or 128 × 16 organization, 2.5V to 5.5V supply range, 10 ms max self-timed write cycle, and 1 million write endurance. It serves as nonvolatile configuration storage in embedded microcontroller systems requiring low-voltage operation and space-constrained PCB layouts.
For engineers reviewing the AT93C57-10SC-2.5 datasheet, AT93C57-10SC-2.5 pinout, AT93C57-10SC-2.5 application, or AT93C57-10SC-2.5 equivalent, key selection criteria include VCC min (2.5V), ORG-pin configurable memory width, SK clock compatibility up to 500 kHz at 2.5V, DO status feedback during write, and JEDEC SOIC-8 packaging for industrial temperature (-40°C to +85°C) operation.
Technical Context
The AT93C57-10SC-2.5 implements a synchronous 3-wire serial interface (CS, SK, DI/DO) with instruction-based command set including READ, WRITE, ERASE, EWEN, and EWDS. Memory organization is dynamically selected via the ORG pin: tied to VCC enables 128-word × 16-bit mode; grounded enables 256-word × 8-bit mode.
It features a self-timed write cycle with READY/BUSY status reported on DO when CS is asserted post-write initiation, and supports full-array ERAL/WRAL commands only at VCC ≥ 4.5V. Standby current is 10.0 µA max at 2.5V/85°C, and AC timing parameters (e.g., tSKH/tSKL = 500 ns min) are specified across the full 2.5V–5.5V operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2048 bits (256 × 8 or 128 × 16 organization) |
| Supply Voltage Range | 2.5V to 5.5V - enables direct interfacing with 2.5V logic and mixed-voltage systems |
| Max Clock Frequency | 500 kHz at 2.5V - defines maximum serial data throughput under low-voltage operation |
| Write Cycle Time | 10 ms max - determines minimum time between successive write commands |
| Endurance | 1 million write cycles - supports long-term field calibration or firmware parameter logging |
| Data Retention | 100 years - ensures configuration integrity over product lifetime without refresh |
| Operating Temperature | -40°C to +85°C - qualified for industrial-grade embedded applications |
Pinout & Package
AT93C57-10SC-2.5 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; orientation follows JEDEC MS-001 BA.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable: device responds only when CS is low; DO enters high-impedance state when CS is high |
| SK | Serial Clock | Synchronizes all data transfers; rising edge samples DI, falling edge outputs DO |
| DI | Data Input | Receives instruction opcodes, addresses, and write data; latched on SK rising edge |
| DO | Data Output | Serially outputs read data or READY/BUSY status during write cycles |
| VCC | Power Supply | 2.5V–5.5V main supply; powers internal logic and EEPROM array |
| GND | Ground | Reference return path for all signals and supply current |
| ORG | Organization Select | High = 128 × 16 mode; low = 256 × 8 mode; unconnected defaults to x16 via internal pull-up |
| DC | Don't Connect | No internal connection; must remain floating or tied to GND/VCC per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| User-selectable memory organization | Hardware-configurable 256×8 or 128×16 layout via ORG pin - eliminates need for software remapping |
| Self-timed write with status feedback | DO reports READY ('1') or BUSY ('0') when CS is asserted post-write - enables precise host timing control without fixed delays |
| Low-voltage operation down to 2.5V | Full functionality at 2.5V with 500 kHz SK max - supports battery-powered and energy-harvesting systems |
| Industrial temperature rating | Specified from -40°C to +85°C - suitable for automotive body control modules and factory automation sensors |
| ESD protection | >4000V HBM - enhances robustness during board handling and system integration |
Applications
| Printer Firmware Storage | Industrial Sensor Calibration |
|---|---|
Use Scenario: Storing printer model-specific font tables, paper-handling profiles, and maintenance counters in laser/multi-function peripherals. IC Role / Device Role / Timing Role: Nonvolatile configuration EEPROM interfaced to MCU via 3-wire SPI-compatible bus; ORG pin fixed to select 128×16 for compact address space. Use Value: Enables field-upgradable firmware parameters without requiring external voltage translators or higher-VCC support circuitry. | Use Scenario: Retaining factory-trimmed offset/gain coefficients and linearization tables for analog sensor front-ends in PLC I/O modules. IC Role / Device Role / Timing Role: Serial configuration memory accessed during power-on initialization; write-protected after calibration using EWDS instruction. Use Value: Guarantees 100-year data retention and 1M-cycle endurance for recalibration events across 15+ year product lifecycles. |
| Automotive Body Control Unit | Medical Device Settings Backup |
Use Scenario: Saving user preferences (mirror position, seat memory, lighting modes) in 12V automotive BCMs with 2.5V domain MCUs. IC Role / Device Role / Timing Role: Low-voltage EEPROM sharing 2.5V rail with microcontroller; CS/SK/DI/DO routed directly without level shifters. Use Value: Eliminates discrete level-shifting components while maintaining -40°C to +85°C operation and AEC-Q200 alignment via qualification evidence. | Use Scenario: Backing up therapy parameters, alarm thresholds, and usage logs in portable infusion pumps and diagnostic handhelds. IC Role / Device Role / Timing Role: Safety-critical nonvolatile storage accessed only during controlled boot sequence; write-disabled (EWDS) during normal operation. Use Value: Meets IEC 62304 Class C software requirements through deterministic write timing (10 ms max) and hardware write protection. |
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-wire SPI interface (not 3-wire); 2.5V–5.5V; 512-byte capacity; no ORG pin | Requires SPI master with dedicated /CS, SCK, MOSI, MISO lines; lacks hardware organization flexibility | Select if existing design uses SPI peripherals and requires higher density (2 Kbytes vs. 256 bytes) |
| STK12C68-5BI | NVSRAM with automatic store/retrieve; 2.7V–5.5V; 8K × 8 organization; built-in lithium backup | Provides instant nonvolatility on power loss without software write commands; larger footprint and higher cost | Select when deterministic, zero-latency data capture on power failure is required over programmable organization |
Compared with M95256-WMN6TP and STK12C68-5BI, the AT93C57-10SC-2.5 offers unique 3-wire simplicity and ORG-pin configurability for resource-constrained microcontrollers, while delivering lower standby current (10 µA vs. 25 µA) and smaller SOIC-8 footprint than NVSRAM alternatives.
Availability
AT93C57-10SC-2.5 is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive body control units, medical device settings backup, and printer firmware storage requiring stable component supply across extended temperature and low-voltage operation.
Supply support for AT93C57-10SC-2.5 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 support for the legacy AT93C family of serial EEPROMs, ensuring long-term documentation, tooling, and manufacturing continuity.
The AT93C57 belongs to Atmel's 3-wire serial EEPROM product line, designed specifically for cost-sensitive, space-constrained embedded systems needing reliable nonvolatile storage with minimal pin count and flexible voltage operation.
FAQ
What is the minimum supply voltage required for reliable operation of the AT93C57-10SC-2.5?
The AT93C57-10SC-2.5 operates reliably from 2.5V to 5.5V. Its absolute minimum functional VCC is 2.5V - below this, read/write timing margins degrade and data corruption may occur. The -2.5 suffix explicitly denotes qualification across this 2.5V–5.5V range, validated per AC/DC specifications in the datasheet.
How does the ORG pin affect memory addressing in the AT93C57-10SC-2.5?
The ORG pin selects between two memory organizations: when tied to VCC, the AT93C57-10SC-2.5 operates as 128 words × 16 bits (address range A6–A0); when grounded, it operates as 256 words × 8 bits (address range A7–A0). This hardware-level selection avoids software overhead and enables optimal bit-width matching to host MCU data paths.
Can the AT93C57-10SC-2.5 be used in place of the AT93C56-10SC-2.5?
Yes - the AT93C57-10SC-2.5 is functionally identical to the AT93C56-10SC-2.5 in pinout, timing, and instruction set, differing only in memory size (2K-bit vs. 2K-bit) and internal organization mapping. Both support 256×8/128×16 modes and share identical SOIC-8 packaging and electrical specs, making them drop-in compatible for most designs.
What is the purpose of the DC pin on the AT93C57-10SC-2.5?
The DC (Don't Connect) pin on the AT93C57-10SC-2.5 has no internal connection and must remain unconnected - neither tied to VCC nor GND. Leaving it floating is acceptable; however, routing it to ground or VCC in PCB layout may cause unintended coupling or leakage paths, potentially affecting noise immunity or ESD performance.
Does the AT93C57-10SC-2.5 support write protection at the hardware level?
The AT93C57-10SC-2.5 provides hardware-assisted write protection via the EWDS (Erase/Write Disable) instruction, which disables all programming operations until EWEN is reissued. While not a dedicated WP pin, this instruction-based lock - combined with the requirement for explicit EWEN before any write - delivers robust, software-controllable protection against accidental overwrites.
AT93C57-10SC-2.5 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:
- 2.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT93C57-10SC-2.5 FAQ
1.How can I place an order for AT93C57-10SC-2.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C57-10SC-2.5 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 AT93C57-10SC-2.5 reliable?
The price and inventory of AT93C57-10SC-2.5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT93C57-10SC-2.5 is usually 5 days.
3.What payment methods are accepted for AT93C57-10SC-2.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C57-10SC-2.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C57-10SC-2.5?
AT93C57-10SC-2.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C57-10SC-2.5 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 AT93C57-10SC-2.5?
For technical support, including AT93C57-10SC-2.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C57-10SC-2.5 requirements.
6.How does Aetrix verify that AT93C57-10SC-2.5 is sourced from the original manufacturer or authorized distributors?
All AT93C57-10SC-2.5 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 AT93C57-10SC-2.5 meets industry standards.
7.What is the process for return or replacement of AT93C57-10SC-2.5?
All AT93C57-10SC-2.5 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C57-10SC-2.5, 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 AT93C57-10SC-2.5 part is unused and in its original packaging.
Return procedure for AT93C57-10SC-2.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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