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Microchip Technology AT93C57-10PC-2.5
- Part No.:
- AT93C57-10PC-2.5
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT93C57-10PC-2.5.pdf
- Description:
- IC EEPROM 2KBIT 3-WIRE 2MHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,951
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Product details
Overview
AT93C57-10PC-2.5 from Microchip Technology (formerly Atmel) is a 2K-bit 3-wire serial EEPROM with user-selectable 256 × 8 or 128 × 16 organization, low-voltage operation (2.5V to 5.5V), 2 MHz clock rate at 5V, and self-timed write cycle (max 10 ms). It serves as nonvolatile configuration storage in embedded controllers, power management units, and industrial sensor modules.
For engineers reviewing the AT93C57-10PC-2.5 datasheet, AT93C57-10PC-2.5 pinout, AT93C57-10PC-2.5 application, or AT93C57-10PC-2.5 equivalent, this page delivers verified electrical specs, validated pin functions, confirmed package mapping (8-pin PDIP), and real-world use context for rapid BOM validation and design-in.
Technical Context
The AT93C57-10PC-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. Its ORG pin selects between 8-bit or 16-bit word organization, and internal pull-up ensures x16 default when unconnected.
Write operations require explicit Erase/Write Enable (EWEN) before programming; status feedback is provided via DO pin during CS high after tCS ≥ 250 ns. The device supports READY/BUSY polling and operates across -40°C to +85°C (Industrial grade), with 1 million write cycles and 100-year data retention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2048 bits (256 × 8 or 128 × 16 words) |
| Supply Voltage Range | 2.5V to 5.5V - enables direct interfacing with 2.5V/3.3V microcontrollers without level shifting |
| Max Clock Frequency | 2 MHz at VCC = 5V - supports fast configuration reads in time-critical boot sequences |
| Write Cycle Time | ≤10 ms - defines minimum delay before next command; impacts firmware timeout logic |
| Data Retention | 100 years - guarantees long-term calibration or serial number storage in field-deployed equipment |
| Endurance | 1 million write cycles - supports frequent parameter updates in programmable power supplies or motor drives |
| ESD Protection | >4000V HBM - reduces need for external protection in board-level ESD-prone environments |
Pinout & Package
AT93C57-10PC-2.5 uses an 8-pin PDIP (package code 8P3) with 0.300" body width and through-hole mounting. Pin 1 is marked by notch or dot; pinout is identical to standard JEDEC SOIC variant except for lead form.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; must be held low for entire instruction sequence; controls DO output impedance state |
| SK | Serial Clock | Synchronizes all data transfers; rising edge latches DI, falling edge clocks DO |
| DI | Data Input | Receives instruction opcodes, addresses, and write data; sampled on SK rising edge |
| DO | Data Output | Outputs read data or READY/BUSY status; high-impedance when CS high or during write cycle |
| GND | Ground Reference | Return path for VCC and all I/O; requires low-impedance PCB connection to minimize noise coupling |
| VCC | Power Supply | 2.5V–5.5V input; bypass capacitor (0.1 µF) required within 10 mm of pins 4 and 5 |
| ORG | Organization Select | Tied to VCC for 128×16 mode, GND for 256×8 mode; internal ~1 MΩ pull-up defaults to x16 if floating |
| DC | Don't Connect | No internal connection; must remain unconnected and unstubbed to avoid parasitic coupling |
Key Features
| Feature | Design Value |
|---|---|
| User-selectable memory organization | Hardware-configurable 256×8 or 128×16 layout eliminates firmware byte-swapping overhead |
| Self-timed write cycle | No external timing control needed; simplifies host MCU firmware and removes need for fixed delays |
| READY/BUSY status reporting | Real-time DO pin feedback enables efficient polling instead of blind wait loops |
| Low standby current (6 µA @ 2.5V) | Extends battery life in always-on IoT nodes and portable instrumentation |
| Industrial temperature range (-40°C to +85°C) | Validated operation in automotive under-hood, factory automation, and outdoor telecom equipment |
Applications
| Industrial Sensor Calibration | Embedded Controller Configuration |
|---|---|
Use Scenario: Storing factory-calibrated gain/offset coefficients and linearization tables in pressure or temperature transmitters. IC Role / Device Role / Timing Role: Nonvolatile parameter storage accessed during power-up initialization and runtime correction routines. Use Value: Eliminates recalibration after power loss; 100-year retention ensures lifetime accuracy without field service. |
Use Scenario: Holding boot configuration flags, communication protocol settings, and user-defined I/O mappings in PLC CPU modules. IC Role / Device Role / Timing Role: Serial configuration memory read early in boot sequence to configure peripheral registers and interrupt vectors. Use Value: Enables field-upgradable firmware behavior without hardware redesign; 2.5V compatibility matches modern low-power MCUs. |
| Power Supply Trim Storage | Motor Drive Parameter Backup |
Use Scenario: Saving digitally trimmed voltage/current reference values in DC-DC controllers after production calibration. IC Role / Device Role / Timing Role: Write-once or infrequent-write storage for analog trim codes; accessed only during startup or service mode. Use Value: Replaces costly laser-trimmed resistors; 1M endurance supports full production test cycles and rework. |
Use Scenario: Backing up torque limits, acceleration profiles, and fault thresholds in servo drive firmware. IC Role / Device Role / Timing Role: Persistent storage updated during commissioning or maintenance; read at power-on to restore operational state. Use Value: Ensures consistent motion control behavior across power cycles; 2.5V–5.5V range accommodates varied supply rails in drive boards. |
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, 5V-only supply (4.5–5.5V), no ORG pin, 5 ms write cycle | Higher density but incompatible protocol; requires SPI-capable host and separate level shifter for 2.5V systems | Select only if migrating to SPI architecture and higher capacity is needed; not drop-in compatible. |
| CAT93C57VI-GT3 | Pin-compatible 2K-bit 3-wire EEPROM, same 2.5–5.5V range, but 5 ms max write time and 200 kHz max clock at 2.5V | Lower AC performance at low voltage; suitable where slower configuration access is acceptable | Drop-in replacement for cost-sensitive designs where 2 MHz clock is unused; verify timing margins in 2.5V operation. |
Compared with AT93C57-10PC-2.5, M95256-WMN6TP offers greater density but demands SPI infrastructure changes, while CAT93C57VI-GT3 preserves pinout and voltage compatibility but trades off speed-making it viable only where 2.5V system clock rates stay below 200 kHz.
Availability
AT93C57-10PC-2.5 is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded controller configuration, and power supply trim storage requiring stable component supply across extended product lifecycles.
Supply support for AT93C57-10PC-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 technical and manufacturing continuity for the AT93C family. The company specializes in microcontrollers, analog, and nonvolatile memory solutions for industrial and automotive markets.
The AT93C57 belongs to Microchip's legacy serial EEPROM product line, designed specifically for space-constrained, low-power embedded systems needing reliable, pin-efficient configuration storage with flexible voltage operation.
FAQ
What is the memory organization of AT93C57-10PC-2.5?
The AT93C57-10PC-2.5 supports user-selectable organization: 256 × 8 bits (when ORG = GND) or 128 × 16 bits (when ORG = VCC or floating). Internal pull-up (~1 MΩ) defaults to x16 mode if ORG is unconnected. This flexibility allows optimal byte- or word-aligned access depending on host processor architecture.
Does AT93C57-10PC-2.5 support 2.5V-only operation?
Yes, AT93C57-10PC-2.5 is rated for 2.5V to 5.5V operation. At 2.5V, maximum clock frequency is 500 kHz (not 2 MHz), and standby current is 6.0–10.0 µA. All DC and AC parameters in the datasheet are specified across this full range, making it suitable for mixed-voltage 2.5V/3.3V systems.
How does the READY/BUSY status work on AT93C57-10PC-2.5?
During a write cycle, pulling CS high after ≥250 ns (tCS) causes DO to output READY (logic 1) or BUSY (logic 0). This status remains valid until CS goes low again. AT93C57-10PC-2.5 does not support status polling after tWP completes - the DO pin returns to high-impedance once CS is deasserted.
Is AT93C57-10PC-2.5 pin-compatible with other AT93Cxx variants?
AT93C57-10PC-2.5 shares identical 8-pin PDIP pinout with AT93C46, AT93C56, and AT93C66 in the same package type. However, address depth differs: AT93C57 uses A7–A0 (256 words), while AT93C46 uses A6–A0 (128 words). Firmware must match instruction length and address width to avoid misreads or partial writes.
What is the significance of the "-10" and "-2.5" suffixes in AT93C57-10PC-2.5?
The "-10" denotes maximum write cycle time of 10 ms; "-2.5" specifies the 2.5V–5.5V supply range. "PC" indicates 8-pin PDIP package (0.300" width) with Commercial temperature grade (0°C to +70°C). These suffixes are critical for correct parametric selection - e.g., AT93C57-10PI-2.5 would be Industrial grade (-40°C to +85°C).
AT93C57-10PC-2.5 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:
- 2.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT93C57-10PC-2.5 FAQ
1.How can I place an order for AT93C57-10PC-2.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C57-10PC-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 AT93C57-10PC-2.5 reliable?
The price and inventory of AT93C57-10PC-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 AT93C57-10PC-2.5 is usually 5 days.
3.What payment methods are accepted for AT93C57-10PC-2.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C57-10PC-2.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C57-10PC-2.5?
AT93C57-10PC-2.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C57-10PC-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 AT93C57-10PC-2.5?
For technical support, including AT93C57-10PC-2.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C57-10PC-2.5 requirements.
6.How does Aetrix verify that AT93C57-10PC-2.5 is sourced from the original manufacturer or authorized distributors?
All AT93C57-10PC-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 AT93C57-10PC-2.5 meets industry standards.
7.What is the process for return or replacement of AT93C57-10PC-2.5?
All AT93C57-10PC-2.5 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C57-10PC-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 AT93C57-10PC-2.5 part is unused and in its original packaging.
Return procedure for AT93C57-10PC-2.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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