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Microchip Technology AT93C57-10PI-2.7
- Part No.:
- AT93C57-10PI-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT93C57-10PI-2.7.pdf
- Description:
- IC EEPROM 2KBIT 3-WIRE 2MHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,391
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Product details
Overview
AT93C57-10PI-2.7 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 (2.7V–5.5V), 10 ms max self-timed write cycle, and industrial temperature range (−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-2.7 datasheet, AT93C57-10PI-2.7 pinout, AT93C57-10PI-2.7 application, or AT93C57-10PI-2.7 equivalent, key selection criteria include VCC operating range compatibility, ORG-pin configurable memory width, 3-wire interface timing at 1 MHz (2.7V), standby current ≤10 µA, and industrial-grade reliability for long-life deployments.
Technical Context
The AT93C57-10PI-2.7 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 (tWP ≤10 ms at 4.5–5.5V; ≤10 ms at 2.7–5.5V), READY/BUSY status reporting via DO pin during programming, and no pre-erase requirement. Endurance is rated at 1 million write cycles and data retention at 100 years under industrial conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2048 bits (256 × 8 or 128 × 16 words) |
| Supply Voltage | 2.7V to 5.5V - supports mixed-voltage systems without level shifters |
| Write Cycle Time | ≤10 ms - enables deterministic firmware update timing in real-time systems |
| Standby Current | ≤10.0 µA at 2.7V - critical for battery-backed or energy-harvesting applications |
| Clock Frequency | 1.0 MHz max at 2.7V - ensures reliable timing margin in noise-prone industrial environments |
| Data Retention | 100 years - guarantees configuration integrity over full product lifecycle |
| Endurance | 1 million write cycles - sufficient for frequent recalibration or logging use cases |
Pinout & Package
AT93C57-10PI-2.7 is supplied in an 8-pin PDIP package (package code 8P3), with 0.300" body width and through-hole mounting. Pin 1 is marked by a notch or dot; orientation follows JEDEC MS-001 BA standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable: device responds only when CS = low; high state places DO in high-impedance |
| SK | Serial Clock | Synchronizes all data transfers; rising edge latches DI, falling edge samples DO |
| DI | Data Input | Receives instruction opcodes, addresses, and write data; must meet tDIS/tDIH setup/hold timing |
| DO | Data Output | Drives read data or READY/BUSY status; high-impedance when CS = high or during write |
| VCC | Power Supply | Primary supply rail (2.7–5.5V); powers internal logic and charge pump for write operations |
| GND | Ground | Reference return path for all I/O and internal circuitry; requires low-impedance connection |
| ORG | Organization Select | Configures memory width: VCC = 128×16, GND = 256×8; unconnected defaults to x16 via internal pull-up |
| DC | Don't Connect | No internal connection; must be left floating or tied to GND/VCC per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| User-selectable memory organization | Hardware-configurable 256×8 or 128×16 layout via ORG pin - eliminates software rework across variants |
| Self-timed write cycle | No external timing control needed; DO reports READY/BUSY - simplifies host firmware design |
| Industrial temperature grade | −40°C to +85°C operation - qualified for automotive body electronics and industrial PLCs |
| Low standby current | ≤10 µA at 2.7V - extends battery life in portable diagnostic tools and remote sensors |
| ESD protection | >4000V HBM - enhances robustness during board handling and field deployment |
Applications
| Motor Control Configuration Storage | Smart Sensor Calibration Data |
|---|---|
Use Scenario: Storing motor phase alignment offsets, PID tuning parameters, and fault history in BLDC driver modules. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed during boot and runtime via SPI-compatible 3-wire interface. Use Value: Enables field-upgradable motor profiles without MCU firmware changes; 1M endurance supports lifetime recalibration. |
Use Scenario: Retaining factory-trimmed gain/offset coefficients and temperature compensation tables in MEMS accelerometers. IC Role / Device Role / Timing Role: Dedicated calibration memory mapped to sensor subsystem; read at power-on reset. Use Value: Maintains measurement accuracy across 100-year data retention; 2.7V operation matches sensor analog front-end supply. |
| Power Supply Sequencing Parameters | Industrial I/O Module Identification |
Use Scenario: Holding voltage ramp rates, delay timers, and rail enable order for multi-rail DC-DC systems in telecom equipment. IC Role / Device Role / Timing Role: System-level configuration store accessed by PMU controller during cold start. Use Value: Guarantees safe power-up sequence across temperature extremes; 10 µA ISB minimizes quiescent drain. |
Use Scenario: Storing unique MAC address, hardware revision, and calibration ID in modular PLC I/O cards. IC Role / Device Role / Timing Role: Identity and traceability memory read once per power cycle by host controller. Use Value: Supports automated inventory and firmware matching; industrial temp rating ensures reliability in cabinet-mounted 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 | 4-wire SPI interface; 2.5V–5.5V supply; 5ms write time; SO8 package only | Requires SPI master with CPOL=0, CPHA=0; no ORG pin - fixed 32K×8 organization | Select when migrating to SPI-standard interface and higher density is acceptable |
| STK12C68-5BI | NVSRAM with 5V-only operation (4.5–5.5V); automatic store-on-power-loss; 100 ns access | Provides SRAM-like read speed and instant nonvolatility; no write timing delays | Select when deterministic sub-microsecond reads and zero-write-latency persistence are required |
Compared with M95256-WMN6TP and STK12C68-5BI, the AT93C57-10PI-2.7 offers unique ORG-pin configurability, lower 2.7V operation, and proven 100-year retention - making it optimal for cost-sensitive, low-power industrial designs where memory width flexibility matters.
Availability
AT93C57-10PI-2.7 is available at Aetrix Electronics and suitable for motor control systems, smart sensor modules, power supply sequencers, and industrial I/O devices requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AT93C57-10PI-2.7 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, qualification, and supply chain continuity.
The AT93C57 belongs to Atmel's 3-wire serial EEPROM product line, designed specifically for space-constrained, low-power embedded systems needing simple, robust nonvolatile storage without complex protocol stacks.
FAQ
What is the maximum clock frequency supported by AT93C57-10PI-2.7 at 2.7V?
The AT93C57-10PI-2.7 supports a maximum SK clock frequency of 1.0 MHz when operated at VCC = 2.7V, as specified in the AC Characteristics table for the 2.7V–5.5V voltage range. This timing margin ensures reliable communication in electrically noisy industrial environments while maintaining compatibility with legacy 8-bit microcontrollers running at modest clock speeds. The AT93C57-10PI-2.7 meets all tSKH, tSKL, and tCS timing requirements at this rate.
How does the ORG pin affect memory organization in AT93C57-10PI-2.7?
In the AT93C57-10PI-2.7, the ORG pin selects between two memory configurations: when tied to VCC, the device operates as 128 words × 16 bits; when grounded, it operates as 256 words × 8 bits. An unconnected ORG pin defaults to x16 mode via an internal ~1 MΩ pull-up. This hardware-selectable organization allows one PCB layout to support either byte- or word-oriented firmware without changing the AT93C57-10PI-2.7 part number.
Does AT93C57-10PI-2.7 require a separate erase cycle before writing?
No, the AT93C57-10PI-2.7 does not require a separate erase cycle before writing. Each WRITE instruction automatically erases the target location prior to programming, and the entire write cycle (including erase and program phases) is self-timed and completes within 10 ms maximum. The AT93C57-10PI-2.7 enters the ERASE/WRITE ENABLE state only after an EWEN instruction, ensuring data integrity against accidental writes.
What is the standby current specification for AT93C57-10PI-2.7 at 2.7V?
The AT93C57-10PI-2.7 draws ≤10.0 µA of standby current (ISB3) when VCC = 2.7V and CS = 0V, as confirmed in the DC Characteristics table. This ultra-low quiescent draw enables use in always-on, battery-powered applications such as wireless sensor nodes and portable test equipment where multi-year operation on primary cells is required. The AT93C57-10PI-2.7 achieves this while retaining full functionality across its industrial temperature range.
Is AT93C57-10PI-2.7 pin-compatible with other members of the AT93C46/56/57/66 family?
Yes, the AT93C57-10PI-2.7 shares identical pinout and package dimensions with AT93C46, AT93C56, and AT93C66 in the same package variant (e.g., 8P3 PDIP), enabling drop-in replacement for density upgrades. However, instruction addressing differs: AT93C57 uses 8-bit addresses (A7–A0) for x8 mode versus AT93C46's 7-bit (A6–A0), so firmware must be verified for address width compatibility. The AT93C57-10PI-2.7 retains full electrical and timing interoperability within the family.
AT93C57-10PI-2.7 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:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT93C57-10PI-2.7 FAQ
1.How can I place an order for AT93C57-10PI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C57-10PI-2.7 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-2.7 reliable?
The price and inventory of AT93C57-10PI-2.7 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-2.7 is usually 5 days.
3.What payment methods are accepted for AT93C57-10PI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C57-10PI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C57-10PI-2.7?
AT93C57-10PI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C57-10PI-2.7 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-2.7?
For technical support, including AT93C57-10PI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C57-10PI-2.7 requirements.
6.How does Aetrix verify that AT93C57-10PI-2.7 is sourced from the original manufacturer or authorized distributors?
All AT93C57-10PI-2.7 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-2.7 meets industry standards.
7.What is the process for return or replacement of AT93C57-10PI-2.7?
All AT93C57-10PI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C57-10PI-2.7, 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-2.7 part is unused and in its original packaging.
Return procedure for AT93C57-10PI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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