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Microchip Technology AT93C56AW-10SI-2.7
- Part No.:
- AT93C56AW-10SI-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT93C56AW-10SI-2.7.pdf
- Description:
- IC EEPROM 2KBIT 3-WIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,472
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Product details
Overview
AT93C56AW-10SI-2.7 from Microchip Technology (formerly Atmel) is a 2K-bit serial EEPROM with 3-wire interface, user-selectable 256 × 8 or 128 × 16 organization via ORG pin, 2.7V–5.5V supply range, and automotive-grade industrial temperature operation (−40°C to +85°C). It delivers 1 million write cycles, 100-year data retention, and supports sequential read in embedded control and sensor calibration systems.
For engineers reviewing the AT93C56AW-10SI-2.7 datasheet, AT93C56AW-10SI-2.7 pinout, AT93C56AW-10SI-2.7 application, or AT93C56AW-10SI-2.7 equivalent, key selection criteria include low-voltage 3-wire serial compatibility, x8/x16 organization flexibility, self-timed 10 ms write cycle, standby current as low as 6 µA at 2.7V, and JEDEC SOIC-8 packaging for space-constrained PCBs.
Technical Context
The AT93C56AW-10SI-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. Its internal organization is dynamically selected by the ORG pin voltage-logic high enables 128 × 16 mode, ground enables 256 × 8 mode-and supports dummy-bit-synchronized output timing.
Operation requires Chip Select (CS) activation followed by start bit and opcode/address/data sequence; DO outputs READY/BUSY status during write/erase when CS is reasserted after tCS ≥ 250 ns. The device operates without external erase cycles and features built-in write protection via EWDS instruction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2048 bits (256 × 8 or 128 × 16 configuration) |
| Supply Voltage Range | 2.7V to 5.5V - enables direct integration into 3.3V and 5V logic domains without level-shifting |
| Write Cycle Time | Max 10 ms - defines minimum interval between successive write commands; no external delay required |
| Endurance | 1 million write cycles - supports frequent field calibration or parameter logging in industrial controllers |
| Data Retention | 100 years at 25°C - ensures long-term reliability in unattended equipment like utility meters or remote sensors |
| Operating Temperature | −40°C to +85°C - meets industrial-grade requirements for automotive body electronics and factory automation |
| Interface Speed | 2 MHz max clock rate at 5V - allows fast configuration loading during system boot or firmware update |
| Standby Current | 6.0–10.0 µA at 2.7V - minimizes power draw in battery-backed or energy-harvesting applications |
Pinout & Package
AT93C56AW-10SI-2.7 is packaged in an 8-lead JEDEC SOIC (8S1), 0.150" wide, gull-wing surface-mount package measuring 4.80–5.00 mm × 5.79–6.20 mm with 1.27 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; must be held low for entire instruction sequence; controls DO high-impedance state |
| SK | Serial Clock | Synchronizes all data transfers; rising edge clocks DI input and DO output; frequency up to 2 MHz |
| DI | Data Input | Receives start bit, opcode, address, and write data; sampled on SK rising edge |
| DO | Data Output | Drives read data or READY/BUSY status; high-impedance when CS is high or during write execution |
| VCC | Power Supply | Primary supply rail (2.7–5.5V); powers internal logic and memory array |
| GND | Ground | Reference return path for all signals and supply current |
| ORG | Organization Select | Logic-high selects 128 × 16 mode; grounded selects 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 to avoid noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| User-selectable memory organization | Hardware-configurable 256 × 8 or 128 × 16 layout via ORG pin-enables optimal byte vs. word addressing without firmware changes |
| Self-timed write cycle | Internal timing eliminates need for external wait-state generation; DO reports BUSY/READY status for precise host synchronization |
| Low-power standby mode | 6 µA typical current at 2.7V allows continuous attachment in always-on systems such as smart thermostats or IoT edge nodes |
| Automotive-grade qualification | Qualified to extended industrial temperature (−40°C to +85°C) and lead-free/halogen-free standards-suitable for under-hood and dashboard modules |
| Sequential read capability | Auto-incrementing address pointer enables burst reads of contiguous memory without repeated address transmission-reduces bus overhead by ~40% vs. random access |
Applications
| Motor Control Parameter Storage | Industrial Sensor Calibration Data |
|---|---|
Use Scenario: Storing motor winding resistance, hall sensor offset, and PID tuning constants in BLDC driver modules. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed during power-up initialization and runtime recalibration. Use Value: Enables field-upgradable motor profiles without firmware reflashing; 1M endurance supports >10 years of daily recalibration cycles. | Use Scenario: Holding factory-trimmed gain/offset coefficients and linearization tables for pressure and temperature transducers. IC Role / Device Role / Timing Role: Serial configuration memory interfaced to microcontroller ADC subsystem during sensor initialization. Use Value: Eliminates manual trimming; 100-year retention guarantees accuracy over product lifetime without periodic recalibration. |
| Automotive Body Control Module (BCM) | Smart Energy Meter Firmware Settings |
Use Scenario: Saving seat position memory, mirror fold/unfold preferences, and lighting dimming profiles in vehicle BCMs. IC Role / Device Role / Timing Role: Low-voltage EEPROM accessed via 3-wire SPI-compatible bus during ignition-on sequence. Use Value: 2.7V operation ensures reliable writes during cold-cranking (battery dip to 2.8V); −40°C to +85°C rating matches under-dash environment. | Use Scenario: Storing tariff schedules, pulse constant scaling factors, and tamper-event logs in DIN-rail mounted electricity meters. IC Role / Device Role / Timing Role: Secure nonvolatile storage for regulatory-compliant meter parameters accessed during meter startup and firmware updates. Use Value: Lead-free/halogen-free construction meets RoHS/REACH; 10 ms write time enables fast parameter updates during utility-side provisioning. |
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 (no ORG pin); fixed 32K × 8 organization; 2.5–5.5V supply; 5 MHz max clock | Requires SPI master support instead of custom 3-wire logic; larger memory but no x16 option | Select when higher bandwidth or larger capacity is needed and SPI infrastructure already exists |
| STK12C68-55LBI | NVSRAM with 8K × 8 organization; parallel interface; 5V-only; 10-year retention; 100K endurance | Parallel bus footprint and voltage requirement incompatible with AT93C56AW-10SI-2.7's serial design | Choose only if legacy parallel EEPROM replacement is required and board layout permits SOIC-28 footprint |
Compared with M95256-WMN6TP and STK12C68-55LBI, AT93C56AW-10SI-2.7 offers unique hardware-selectable organization and true 3-wire simplicity for resource-constrained MCUs, while delivering superior endurance and retention-making it optimal for cost-sensitive, low-pin-count industrial designs where flexibility and longevity are critical.
Availability
AT93C56AW-10SI-2.7 is available at Aetrix Electronics and suitable for motor control parameter storage, industrial sensor calibration, automotive body control modules, and smart energy meter firmware settings requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AT93C56AW-10SI-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 is a global semiconductor company specializing in microcontrollers, analog devices, and memory solutions, with a focus on embedded control and connectivity.
The AT93C56AW-10SI-2.7 belongs to Microchip's legacy serial EEPROM product line, designed specifically for low-power, pin-efficient nonvolatile storage in industrial, automotive, and consumer systems where 3-wire simplicity and hardware-configurable memory mapping are essential.
FAQ
What is the maximum clock frequency supported by AT93C56AW-10SI-2.7?
The AT93C56AW-10SI-2.7 supports a maximum SK clock frequency of 2 MHz at VCC = 5.0V. At lower supply voltages (2.7V–5.5V), the AC characteristics specify a minimum clock period of 1000 ns, corresponding to 1 MHz operation. This timing ensures robust communication across its full voltage range without requiring external clock dividers or timing adjustments in host firmware.
How does the ORG pin affect memory organization in AT93C56AW-10SI-2.7?
In AT93C56AW-10SI-2.7, the ORG pin determines internal memory mapping: when tied to VCC, it selects 128 words × 16 bits; when grounded, it selects 256 words × 8 bits. If left unconnected, the internal 1 MΩ pull-up defaults to x16 mode. This hardware-selectable configuration eliminates software overhead and enables one PCB design to support both byte- and word-oriented applications.
Is AT93C56AW-10SI-2.7 compatible with 1.8V systems?
No, AT93C56AW-10SI-2.7 is a 2.7V–5.5V device and is not rated for 1.8V operation. The "-2.7" suffix explicitly denotes the 2.7V minimum supply variant. For 1.8V systems, Microchip offers the AT93C56A-10SI-1.8 or AT93C56AW-10SI-1.8 variants, which feature different internal voltage regulation and are characterized down to 1.8V.
What is the purpose of the DC pin on AT93C56AW-10SI-2.7?
The DC (Don't Connect) pin on AT93C56AW-10SI-2.7 has no internal connection and must remain electrically floating. It is included for mechanical symmetry and package compatibility across the AT93C56A/66A family. Connecting DC to any voltage rail or ground may introduce noise coupling or violate absolute maximum ratings, potentially degrading DO signal integrity or increasing standby current.
Does AT93C56AW-10SI-2.7 require an external erase cycle before writing?
No, AT93C56AW-10SI-2.7 performs automatic erase-before-write internally. Each WRITE instruction initiates a self-timed sequence that first erases the target location and then programs the new data-all within the specified 10 ms maximum write cycle time. No separate ERASE command is needed unless selective location erasure is required prior to partial rewrites.
AT93C56AW-10SI-2.7 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:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT93C56AW-10SI-2.7 FAQ
1.How can I place an order for AT93C56AW-10SI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C56AW-10SI-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 AT93C56AW-10SI-2.7 reliable?
The price and inventory of AT93C56AW-10SI-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 AT93C56AW-10SI-2.7 is usually 5 days.
3.What payment methods are accepted for AT93C56AW-10SI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C56AW-10SI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C56AW-10SI-2.7?
AT93C56AW-10SI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C56AW-10SI-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 AT93C56AW-10SI-2.7?
For technical support, including AT93C56AW-10SI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C56AW-10SI-2.7 requirements.
6.How does Aetrix verify that AT93C56AW-10SI-2.7 is sourced from the original manufacturer or authorized distributors?
All AT93C56AW-10SI-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 AT93C56AW-10SI-2.7 meets industry standards.
7.What is the process for return or replacement of AT93C56AW-10SI-2.7?
All AT93C56AW-10SI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C56AW-10SI-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 AT93C56AW-10SI-2.7 part is unused and in its original packaging.
Return procedure for AT93C56AW-10SI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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