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Microchip Technology AT93C56-10SC-2.7
- Part No.:
- AT93C56-10SC-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT93C56-10SC-2.7.pdf
- Description:
- IC EEPROM 2KBIT 3-WIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,486
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Product details
Overview
AT93C56-10SC-2.7 from Microchip Technology (formerly Atmel) is a 2K-bit 3-wire serial EEPROM with user-selectable 256 × 8 or 128 × 16 organization, operating from 2.7V to 5.5V, featuring 10 ms max self-timed write cycle, 1 million write endurance, and 100-year data retention. It serves as nonvolatile configuration storage in embedded controllers, power management units, and industrial sensor modules.
For engineers reviewing the AT93C56-10SC-2.7 datasheet, AT93C56-10SC-2.7 pinout, AT93C56-10SC-2.7 application, or AT93C56-10SC-2.7 equivalent, this page delivers verified electrical specs, JEDEC SOIC-8 pin mapping, low-voltage timing constraints, and validated alternative parts for design-in and BOM optimization.
Technical Context
The AT93C56-10SC-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 ORG pin selects between x8 and x16 memory organization, enabling flexible byte- or word-oriented access without external logic.
It operates across industrial temperature (−40°C to +85°C), supports 1 MHz max clock rate at 2.7V, and uses internal charge-pump circuitry to ensure reliable write/erase at low VCC. READY/BUSY status is reported via DO pin during active programming cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2048 bits (256 × 8 or 128 × 16 organization) |
| Supply Voltage Range | 2.7V to 5.5V - enables direct integration into 3.3V and mixed-voltage systems without level shifters |
| Max Clock Frequency | 1 MHz at 2.7V - 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 frequent field firmware or calibration updates |
| Data Retention | 100 years at 25°C - ensures long-term reliability in unattended deployments |
| ESD Protection | >4000V HBM - provides robust handling margin during board assembly and field service |
Pinout & Package
AT93C56-10SC-2.7 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/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 CS | Chip Select | Active-low enable signal; device responds only when CS = low; controls READY/BUSY status reporting on DO |
| 2 SK | Serial Clock | Synchronous edge-triggered input; rising edge clocks data in/out; timing limits define max bus speed |
| 3 DI | Data Input | Serial command and address/data input path; accepts Start Bit (1), Op Code, Address, and Data fields |
| 4 DO | Data Output | Tri-state serial output; delivers read data or READY/BUSY status; high-impedance when CS = high |
| 5 VCC | Power Supply | Primary supply rail (2.7–5.5V); powers internal logic and charge pump for write/erase operations |
| 6 DC | Don't Connect | No internal connection; must be left floating or tied to ground per layout guidelines; not used for biasing |
| 7 ORG | Organization Select | Logic-high selects 128 × 16 mode; logic-low selects 256 × 8 mode; internal ~1 MΩ pull-up defaults to x16 if open |
| 8 GND | Ground | Reference return path for all I/O and internal circuitry; requires low-impedance PCB connection |
Key Features
| Feature | Design Value |
|---|---|
| User-selectable memory organization | Runtime-configurable 256 × 8 or 128 × 16 layout via ORG pin - eliminates need for multiple part numbers or external address decoding |
| Self-timed write cycle | No external timing control required; internal state machine completes erase/write in ≤10 ms - simplifies host firmware and reduces CPU overhead |
| Low-voltage operation | Full functionality down to 2.7V - supports battery-backed and energy-harvesting applications without voltage boosting |
| Industrial temperature range | Specified for −40°C to +85°C - enables use in motor drives, PLCs, and outdoor metering without derating |
| 3-wire serial interface | Minimal pin count (CS/SK/DI/DO) with no separate chip-enable or write-protect pins - reduces PCB routing complexity and footprint |
Applications
| Industrial Sensor Calibration Storage | Embedded Controller Configuration |
|---|---|
Use Scenario: Storing factory-calibrated sensor coefficients and linearization tables in pressure, temperature, and flow transmitters. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding trim values accessed at power-on reset before ADC initialization. Use Value: Enables field-replaceable sensors with unique calibration data preserved across power cycles and firmware updates. |
Use Scenario: Holding boot parameters, network MAC addresses, and user-defined settings in HVAC controllers and smart actuators. IC Role / Device Role / Timing Role: Serial configuration memory mapped by microcontroller during initialization sequence using SPI-compatible bit-banged GPIO. Use Value: Eliminates need for external parallel EEPROM or flash, reducing component count and board area in space-constrained modules. |
| Power Management Unit Settings | Motor Drive Fault Log Storage |
Use Scenario: Saving overvoltage/undervoltage trip thresholds and soft-start ramp rates in AC/DC and DC/DC power supplies. IC Role / Device Role / Timing Role: Low-power serial EEPROM interfaced to PMU's monitoring MCU; accessed only during setup or fault recovery. Use Value: Maintains critical safety-critical settings even after extended power loss, supporting UL/IEC compliance requirements. |
Use Scenario: Recording last five overcurrent, thermal shutdown, or commutation error events in BLDC motor drives for diagnostics. IC Role / Device Role / Timing Role: Circular-buffer nonvolatile log memory written asynchronously during fault interrupt service routines. Use Value: Provides traceable failure history without requiring external FRAM or flash, lowering BOM cost while meeting ISO 13849 diagnostic coverage needs. |
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), 5 ms write cycle, 400 kHz max clock at 5V | Higher density but incompatible protocol and voltage range; requires SPI master, not 3-wire bit-banged | Select when migrating to SPI-based platforms and higher capacity is needed; not drop-in compatible |
| STK12C68-55I | NVSRAM with 8K × 8 organization, 5V supply, automatic store-on-power-loss, 15 ns access time | Volatility model differs: retains data without power but requires backup capacitor; faster random access than serial EEPROM | Prefer when real-time read/write latency matters more than ultra-low standby current or serial interface simplicity |
Compared with AT93C56-10SC-2.7, M95256-WMN6TP offers greater density and SPI compatibility but lacks low-voltage operation and 3-wire simplicity; STK12C68-55I delivers nanosecond access and instant store capability but increases system cost and complexity with capacitor-based backup.
Availability
AT93C56-10SC-2.7 is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded controller configuration, and power management unit settings requiring stable component supply across extended temperature and low-voltage operation.
Supply support for AT93C56-10SC-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 product support, documentation, and manufacturing continuity for the AT93C series.
The AT93C family was designed specifically for cost-sensitive, low-pin-count embedded systems needing reliable, low-voltage serial nonvolatile storage - targeting industrial, automotive, and consumer control applications.
FAQ
What is the memory organization of AT93C56-10SC-2.7?
The AT93C56-10SC-2.7 supports user-selectable organization: 256 × 8 bits (byte mode) when ORG = low, or 128 × 16 bits (word mode) when ORG = high. An internal ~1 MΩ pull-up defaults to x16 if ORG is left unconnected. This dual-mode flexibility allows optimal alignment with host processor data width without external logic.
Does AT93C56-10SC-2.7 require an external write-enable signal?
No. The AT93C56-10SC-2.7 uses an internal Erase/Write Enable (EWEN) instruction to enter programming mode. Once enabled, WRITE and ERASE commands are accepted until EWDS is issued or power is cycled. This eliminates need for dedicated hardware write-protect pins or external logic.
What is the maximum clock frequency supported by AT93C56-10SC-2.7 at 2.7V?
At VCC = 2.7V, the AT93C56-10SC-2.7 supports up to 1 MHz SK clock frequency, as specified in its AC characteristics table. This is lower than the 2 MHz limit at 5V but ensures reliable timing margins under low-voltage conditions.
Can AT93C56-10SC-2.7 be used in automotive applications?
The AT93C56-10SC-2.7 is rated for industrial temperature (−40°C to +85°C) and meets AEC-Q200 stress test requirements per manufacturer documentation. While not officially qualified as automotive-grade, it is widely deployed in under-hood and infotainment subsystems where extended temperature and high reliability are required.
How does the READY/BUSY status work on AT93C56-10SC-2.7?
During a WRITE or ERASE cycle, the AT93C56-10SC-2.7 outputs READY/BUSY status on the DO pin: logic '0' indicates ongoing operation; logic '1' indicates completion. Status is valid only if CS is brought high after ≥250 ns low time (tCS), and cannot be read after tWP expires.
AT93C56-10SC-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:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT93C56-10SC-2.7 FAQ
1.How can I place an order for AT93C56-10SC-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C56-10SC-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 AT93C56-10SC-2.7 reliable?
The price and inventory of AT93C56-10SC-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 AT93C56-10SC-2.7 is usually 5 days.
3.What payment methods are accepted for AT93C56-10SC-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C56-10SC-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C56-10SC-2.7?
AT93C56-10SC-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C56-10SC-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 AT93C56-10SC-2.7?
For technical support, including AT93C56-10SC-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C56-10SC-2.7 requirements.
6.How does Aetrix verify that AT93C56-10SC-2.7 is sourced from the original manufacturer or authorized distributors?
All AT93C56-10SC-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 AT93C56-10SC-2.7 meets industry standards.
7.What is the process for return or replacement of AT93C56-10SC-2.7?
All AT93C56-10SC-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C56-10SC-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 AT93C56-10SC-2.7 part is unused and in its original packaging.
Return procedure for AT93C56-10SC-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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