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Microchip Technology AT93C56-10SC
- Part No.:
- AT93C56-10SC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT93C56-10SC.pdf
- Description:
- IC EEPROM 2KBIT 3-WIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,610
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Product details
Overview
AT93C56-10SC from Microchip Technology (formerly Atmel) is a 2K-bit serial EEPROM with 3-wire interface, supporting user-selectable 256 × 8 or 128 × 16 organization via the ORG pin, operating across 2.7V–5.5V supply, and featuring self-timed 10 ms max write cycle. It is used in industrial control systems for storing calibration data, configuration registers, and firmware boot parameters.
For engineers reviewing the AT93C56-10SC datasheet, AT93C56-10SC pinout, AT93C56-10SC application, or AT93C56-10SC equivalent, key selection considerations include voltage range compatibility (2.7V–5.5V), 2K-bit density with dual-word-width flexibility, SOIC-8 packaging, 2 MHz clock rate at 5V, and automotive-grade temperature support up to +85°C.
Technical Context
The AT93C56-10SC 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 architecture supports dynamic word-width selection (8-bit or 16-bit) via external ORG pin biasing, enabling flexible memory mapping without hardware redesign.
It uses a self-timed write cycle with READY/BUSY status feedback via DO pin when CS is asserted post-write initiation, eliminating need for external timing control. The device enters Erase/Write Disable state on power-up and requires explicit EWEN instruction before programming - ensuring robust data integrity in noisy or uncontrolled power environments.
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 mixed-voltage 3.3V and 5V systems without level-shifting |
| Max Clock Frequency | 2 MHz at VCC = 5V - supports high-speed configuration reads during system boot |
| Write Cycle Time | 10 ms maximum - defines worst-case latency for nonvolatile parameter updates |
| Endurance | 1 million write cycles - ensures long-term reliability in field-updatable applications |
| Data Retention | 100 years at +25°C - guarantees persistent storage of critical calibration or security keys |
| Operating Temperature | -40°C to +85°C - qualified for industrial and extended-temperature embedded deployments |
Pinout & Package
AT93C56-10SC 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 1 is marked by a beveled corner or dot; orientation follows JEDEC MS-001 BA outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable for serial command decoding; must remain low for full instruction duration |
| SK | Serial Clock | Synchronizes all data transfers; rising edge samples DI, falling edge outputs DO |
| DI | Data Input | Receives start bit, op-code, address, and write data; latched on SK rising edge |
| DO | Data Output | Drives read data or READY/BUSY status; high-impedance when CS is high |
| VCC | Power Supply | Primary supply rail (2.7V–5.5V); decoupling capacitor required within 10 mm |
| GND | Ground | Reference for all I/O and internal logic; must connect to system ground plane |
| ORG | Organization Select | High = 128 × 16 mode; low = 256 × 8 mode; 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 firmware rework when changing data width requirements |
| Self-timed write with status feedback | DO pin returns READY ('1') or BUSY ('0') after CS assertion - enables precise software polling without fixed delays |
| Low standby current | 6 µA typical at 2.7V - reduces quiescent power in battery-backed or always-on subsystems |
| ESD protection | >4000V HBM - enhances robustness during board handling and system integration |
| Industrial temperature grade | Rated -40°C to +85°C - supports deployment in motor drives, PLCs, and outdoor telemetry units |
Applications
| Industrial Sensor Calibration | Embedded System Configuration |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain coefficients for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile parameter store accessed during power-on initialization via SPI-compatible 3-wire interface. Use Value: Enables field-replaceable sensor modules with unique calibration data retained across power cycles and firmware updates. |
Use Scenario: Holding boot-time configuration flags (e.g., UART baud rate, display resolution, network MAC address) in medical diagnostic equipment. IC Role / Device Role / Timing Role: Serial configuration memory mapped to microcontroller's GPIO-controlled bit-banged interface. Use Value: Allows OEM customization without PCB revision; supports secure write-protection via EWDS instruction. |
| Automotive Body Control Module | Consumer Appliance Settings Storage |
Use Scenario: Saving user preferences (seat position, mirror angle, lighting profiles) in 12V automotive body control units. IC Role / Device Role / Timing Role: Low-voltage EEPROM interfaced to 3.3V MCU over noise-immune 3-wire bus with CS-driven command framing. Use Value: Operates reliably across automotive cold-crank (down to 2.7V) and hot-soak conditions while retaining settings for >10 years. |
Use Scenario: Retaining cooking program history, child-lock state, and language selection in smart ovens and washing machines. IC Role / Device Role / Timing Role: Cost-optimized serial memory accessed during UI initialization to restore last-used operational context. Use Value: Eliminates need for battery-backed SRAM; withstands 1M+ write cycles from frequent user interaction logs. |
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 (4-wire), 2.5–5.5V, 20 MHz max clock; no ORG pin or dual-word-width option | Higher density, faster interface, but requires SPI controller instead of bit-banged 3-wire | Select when migrating to SPI-based platforms or requiring >2K capacity |
| STK12C68-55I | 8K-bit NVSRAM with parallel interface, 4.5–5.5V only, built-in lithium backup; no serial protocol or low-voltage operation | Supports byte-level random writes without delay; incompatible pinout and voltage range | Choose for legacy 8-bit bus systems needing zero-write-delay nonvolatility |
Compared with M95256-WMN6TP and STK12C68-55I, the AT93C56-10SC uniquely balances 2.7V operation, hardware-selectable word width, and minimal 3-wire footprint - making it optimal for space-constrained, mixed-voltage embedded designs where pin count and voltage flexibility are prioritized over raw speed or density.
Availability
AT93C56-10SC is available at Aetrix Electronics and suitable for industrial automation, automotive electronics, and consumer appliance applications requiring stable component supply, long-lifecycle support, and guaranteed traceability.
Supply support for AT93C56-10SC 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 AT93Cxx family.
The AT93C56-10SC belongs to Microchip's legacy serial EEPROM product line, designed specifically for cost-sensitive, low-pin-count embedded systems needing reliable nonvolatile storage with flexible voltage and organization options.
FAQ
What is the memory organization of AT93C56-10SC?
The AT93C56-10SC provides 2048 bits of EEPROM organized as either 256 × 8 or 128 × 16 words, selected by the logic level applied to the ORG pin: high for 128 × 16 mode, low for 256 × 8 mode. An unconnected ORG pin defaults to x16 via internal pull-up. This configuration is fixed at power-up and remains active until reset.
Does AT93C56-10SC support 1.8V operation?
No, AT93C56-10SC does not support 1.8V operation. Per the official Atmel datasheet, the AT93C56 variant is specified for 2.7V–5.5V and 2.5V–5.5V versions only; 1.8V operation is exclusive to the AT93C46-10xx-1.8 ordering variants. Using AT93C56-10SC below 2.7V may result in unreliable read/write behavior or failure to enter programming modes.
How is write protection implemented on AT93C56-10SC?
AT93C56-10SC uses instruction-based write protection: it powers up in Erase/Write Disable (EWDS) state, blocking all programming commands until an explicit EWEN (Erase/Write Enable) instruction is issued. After programming, executing EWDS restores protection. There is no hardware write-protect pin - security relies entirely on controlled command sequencing and proper CS timing.
What package type is used for AT93C56-10SC?
AT93C56-10SC uses an 8-lead JEDEC-standard SOIC package (designated 8S1), 0.150" wide, with gull-wing leads and 1.27 mm pitch. This is distinct from the wider EIAJ SOIC (8S2) and TSSOP (8T) variants offered in other ordering codes - the "SC" suffix explicitly denotes the JEDEC SOIC-8 variant.
Can AT93C56-10SC be used in automotive applications?
Yes, AT93C56-10SC is qualified for industrial temperature range (-40°C to +85°C) and features >4000V HBM ESD protection, making it suitable for under-hood and cabin automotive modules such as body control units and HVAC controllers. While not AEC-Q100 certified, its electrical and thermal specs align with many Tier-2 automotive subsystem requirements when validated per customer qualification protocols.
AT93C56-10SC 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:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT93C56-10SC FAQ
1.How can I place an order for AT93C56-10SC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C56-10SC 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 reliable?
The price and inventory of AT93C56-10SC 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 is usually 5 days.
3.What payment methods are accepted for AT93C56-10SC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C56-10SC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C56-10SC?
AT93C56-10SC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C56-10SC 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?
For technical support, including AT93C56-10SC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C56-10SC requirements.
6.How does Aetrix verify that AT93C56-10SC is sourced from the original manufacturer or authorized distributors?
All AT93C56-10SC 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 meets industry standards.
7.What is the process for return or replacement of AT93C56-10SC?
All AT93C56-10SC units undergo pre-shipment inspection (PSI). If there is an issue with AT93C56-10SC, 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 part is unused and in its original packaging.
Return procedure for AT93C56-10SC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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