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Microchip Technology AT93C56W-10SC-2.5
- Part No.:
- AT93C56W-10SC-2.5
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT93C56W-10SC-2.5.pdf
- Description:
- IC EEPROM 2KBIT 3-WIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,935
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Product details
Overview
AT93C56W-10SC-2.5 from Microchip Technology (formerly Atmel) is a 2-kbit serial EEPROM with 3-wire interface, user-selectable 256 × 8 or 128 × 16 organization, 2.5V to 5.5V supply range, and 10 ms max self-timed write cycle. It operates in industrial temperature range (−40°C to +85°C) and is packaged in 8-lead EIAJ SOIC (8S2). This device serves as nonvolatile configuration storage in embedded controllers, power management units, and sensor calibration systems.
For engineers reviewing the AT93C56W-10SC-2.5 datasheet, AT93C56W-10SC-2.5 pinout, AT93C56W-10SC-2.5 application, or AT93C56W-10SC-2.5 equivalent, key selection criteria include low-voltage operation down to 2.5V, 1 million write endurance, 100-year data retention, 3-wire serial compatibility with legacy microcontrollers, and industrial-grade reliability for long-lifecycle deployments.
Technical Context
The AT93C56W-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. Its internal ORG pin selects between x8 and x16 memory organization, enabling flexible byte- or word-oriented access without external logic.
Write operations are self-timed and require prior EWEN enable; READY/BUSY status is reported via DO pin when CS is raised during programming. The device supports clock frequencies up to 500 kHz at 2.5V and features built-in ESD protection (>4000V HBM), making it suitable for noise-prone industrial environments.
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/3.3V microcontrollers without level shifters |
| Max Clock Frequency | 500 kHz at VCC = 2.5V - ensures reliable timing margin under low-voltage conditions |
| Write Cycle Time | 10 ms maximum - defines minimum interval between successive writes; impacts firmware update latency |
| Endurance | 1 million write cycles - supports frequent recalibration or logging in field-deployed equipment |
| Data Retention | 100 years at 25°C - guarantees long-term validity of stored calibration or security keys |
| Operating Temperature | −40°C to +85°C - qualified for industrial and automotive under-hood applications |
Pinout & Package
AT93C56W-10SC-2.5 is housed in an 8-lead EIAJ SOIC package (8S2), 0.200" wide, with standard gull-wing leads and JEDEC-compliant footprint. Pin 1 is marked by a beveled corner or dot; the package is RoHS-compliant and moisture-sensitive level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; must be held low for entire instruction sequence; controls device activation and READY/BUSY reporting |
| SK | Serial Clock | Synchronous edge-triggered input; rising edge latches DI, falling edge clocks DO; determines max interface speed |
| DI | Data Input | Serial command/address/data input; accepts Start Bit (1), Op Code, Address, and Data fields per instruction |
| DO | Data Output | Tri-state serial output; delivers read data or READY/BUSY status; high-impedance when CS is high |
| GND | Ground Reference | Primary return path for VCC and I/O; requires low-impedance PCB connection to minimize noise coupling |
| VCC | Power Supply | 2.5V–5.5V main supply; bypass capacitor (0.1 µF) required near pin for stable operation |
| ORG | Organization Select | Logic-high → 128 × 16 mode; logic-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 only if required by board layout constraints |
Key Features
| Feature | Design Value |
|---|---|
| User-selectable memory organization | Hardware-configurable x8 or x16 mode via ORG pin - eliminates need for software bit manipulation or external address decoding |
| Self-timed write cycle | No external timing control needed; DO pin reports BUSY/READY status - simplifies host firmware and avoids fixed delay loops |
| Low-voltage operation | Functional down to 2.5V with full AC/DC specs - enables direct use in battery-backed or energy-harvesting systems |
| High-reliability nonvolatile storage | 1M write cycles and 100-year retention - meets long-life requirements for medical, industrial, and infrastructure equipment |
| ESD robustness | ≥4000V HBM - reduces susceptibility to handling damage and system-level ESD events in factory or field environments |
Applications
| Industrial Sensor Calibration | Embedded Power Management |
|---|---|
Use Scenario: Storing factory-trimmed offset/gain coefficients and temperature compensation tables for analog sensor front-ends. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding persistent calibration parameters accessed at system boot. Use Value: Enables plug-and-play sensor replacement without reprogramming; maintains accuracy across thermal cycling and 10+ year service life. |
Use Scenario: Saving runtime-configured voltage/current limits, fault thresholds, and soft-start profiles in DC-DC controllers. IC Role / Device Role / Timing Role: System state keeper that retains safety-critical settings across power cycles and brownouts. Use Value: Ensures consistent power delivery behavior after unexpected shutdowns; eliminates need for host MCU to reinitialize on every restart. |
| Consumer Audio Device Settings | Automotive Body Control Module |
Use Scenario: Retaining user preferences (volume, EQ, input source) and firmware version metadata in portable speakers and soundbars. IC Role / Device Role / Timing Role: Low-power configuration store accessed infrequently during UI interaction or boot. Use Value: Delivers zero-latency recall of settings with <1 µA standby current at 2.5V - extends battery life in USB-C powered devices. |
Use Scenario: Storing door lock actuator calibration, mirror position memory, and lighting fade profiles in BCMs. IC Role / Device Role / Timing Role: Robust parameter vault operating across automotive temperature extremes and vibration. Use Value: Supports ASIL-B relevant functions via 1M endurance and −40°C to +85°C qualification; withstands repeated reprogramming during dealer updates. |
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, 2.5V–5.5V, 10 MHz clock, no ORG pin - fixed 32K × 8 organization | Higher density and faster interface but lacks hardware-configurable x8/x16 mode and 3-wire simplicity | Choose for bandwidth-constrained systems needing >2 Kbit or SPI-native hosts; avoid if legacy 3-wire protocol or flexible word size is required. |
| STK12C68-5LH1T | 8-Kbit NVSRAM with parallel interface, 4.5V–5.5V only, integrated lithium backup - no low-voltage support | Offers nanosecond random-access writes but requires higher VCC and larger PCB footprint | Prefer for real-time logging where write latency must be <100 ns; not suitable for 2.5V systems or space-constrained designs. |
Compared with M95256-WMN6TP and STK12C68-5LH1T, the AT93C56W-10SC-2.5 provides optimal balance of ultra-low-voltage operation, hardware-flexible memory mapping, and minimal pin count - making it the preferred choice for cost-sensitive, power-constrained embedded systems requiring exactly 2 Kbit of robust serial EEPROM.
Availability
AT93C56W-10SC-2.5 is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded power management, consumer audio device settings, and automotive body control module applications requiring stable component supply over extended production lifecycles.
Supply support for AT93C56W-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 continues to manufacture, qualify, and support the AT93C family of serial EEPROMs with full backward compatibility and long-term product roadmaps.
The AT93C56W-10SC-2.5 belongs to Microchip's legacy serial EEPROM product line, designed specifically for low-pin-count, low-power, and industrial-grade nonvolatile storage in resource-constrained microcontroller systems.
FAQ
What is the memory organization flexibility of the AT93C56W-10SC-2.5?
The AT93C56W-10SC-2.5 supports user-selectable 256 × 8 or 128 × 16 organization via the ORG pin: tied to VCC selects x16 mode, grounded selects x8 mode, and left unconnected defaults to x16 using an internal ~1 MΩ pull-up. This hardware-based configuration eliminates firmware overhead and enables seamless adaptation to byte- or word-oriented host protocols without changing the AT93C56W-10SC-2.5 part number.
Does the AT93C56W-10SC-2.5 require an external erase cycle before writing?
No, the AT93C56W-10SC-2.5 does not require a separate erase cycle. Each WRITE instruction automatically erases and programs the target location in a single self-timed operation. However, an EWEN (Erase/Write Enable) instruction must precede any WRITE or ERASE command, and EWDS must be issued afterward to prevent accidental writes - this two-step enable/disable protocol is integral to the AT93C56W-10SC-2.5's data integrity design.
What is the maximum clock frequency supported by the AT93C56W-10SC-2.5 at 2.5V?
At VCC = 2.5V, the AT93C56W-10SC-2.5 supports a maximum SK clock frequency of 500 kHz, as specified in its AC characteristics table. This limit ensures reliable setup/hold timing margins for DI and DO signals under low-voltage conditions. Exceeding 500 kHz may result in command corruption or failed writes, so firmware must throttle the clock accordingly when operating the AT93C56W-10SC-2.5 in 2.5V mode.
How is READY/BUSY status reported during a write cycle on the AT93C56W-10SC-2.5?
During a write cycle, the AT93C56W-10SC-2.5 outputs READY/BUSY status on the DO pin when CS is brought high after being held low for ≥250 ns (tCS). A logic '0' indicates programming is still in progress; a logic '1' confirms completion. This status is only valid while CS remains active - if CS is deasserted before tWP expires, the AT93C56W-10SC-2.5 will not report status, and the host must wait the full 10 ms maximum.
Is the AT93C56W-10SC-2.5 compatible with 1.8V systems?
No, the AT93C56W-10SC-2.5 is rated for 2.5V to 5.5V operation only. While the broader AT93C46/56/57/66 family includes 1.8V variants (e.g., AT93C56W-10SC-1.8), the AT93C56W-10SC-2.5 variant is explicitly characterized and guaranteed from 2.5V upward. Operating the AT93C56W-10SC-2.5 below 2.5V risks undefined behavior, incomplete writes, or premature data loss and is outside its qualified specification.
AT93C56W-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
AT93C56W-10SC-2.5 FAQ
1.How can I place an order for AT93C56W-10SC-2.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C56W-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 AT93C56W-10SC-2.5 reliable?
The price and inventory of AT93C56W-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 AT93C56W-10SC-2.5 is usually 5 days.
3.What payment methods are accepted for AT93C56W-10SC-2.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C56W-10SC-2.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C56W-10SC-2.5?
AT93C56W-10SC-2.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C56W-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 AT93C56W-10SC-2.5?
For technical support, including AT93C56W-10SC-2.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C56W-10SC-2.5 requirements.
6.How does Aetrix verify that AT93C56W-10SC-2.5 is sourced from the original manufacturer or authorized distributors?
All AT93C56W-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 AT93C56W-10SC-2.5 meets industry standards.
7.What is the process for return or replacement of AT93C56W-10SC-2.5?
All AT93C56W-10SC-2.5 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C56W-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 AT93C56W-10SC-2.5 part is unused and in its original packaging.
Return procedure for AT93C56W-10SC-2.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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