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Microchip Technology AT93C56W-10SI-1.8
- Part No.:
- AT93C56W-10SI-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT93C56W-10SI-1.8.pdf
- Description:
- IC EEPROM 2KBIT 3-WIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,383
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Product details
Overview
AT93C56W-10SI-1.8 from Microchip Technology (formerly Atmel) is a 2-kbit serial EEPROM with three-wire interface, 1.8V–5.5V supply range, user-selectable 256×8 or 128×16 organization, and automotive-grade temperature support (−40°C to +85°C). It delivers 2 MHz clock rate at 5V, 10 ms max self-timed write cycle, and 1 million write endurance for embedded configuration storage in industrial controllers and automotive modules.
For engineers reviewing the AT93C56W-10SI-1.8 datasheet, AT93C56W-10SI-1.8 pinout, AT93C56W-10SI-1.8 application, or AT93C56W-10SI-1.8 equivalent, key selection criteria include low-voltage operation down to 1.8V, ORG-pin configurable memory width, SOIC-8 package compatibility, and guaranteed 100-year data retention under industrial conditions.
Technical Context
The AT93C56W-10SI-1.8 implements a synchronous three-wire serial interface (CS/SK/DI/DO) with start-bit–driven instruction decoding and no external erase cycle required. Its internal organization is selected via the ORG pin: tied to VCC for 128×16 mode, grounded for 256×8 mode - though this feature is not available on 1.8V-only variants per datasheet note.
Write operations are self-timed and require prior EWEN instruction; status is monitored via DO pin during CS high after tCS ≥ 250 ns. The device supports full-array ERAL/WRAL instructions only at VCC = 4.5V–5.5V, and includes dedicated EWDS instruction to disable programming modes for data integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2048 bits (256 × 8 or 128 × 16 words) |
| Supply Voltage Range | 1.8V to 5.5V - enables direct interface with 1.8V logic and mixed-voltage systems |
| Max Clock Frequency | 2 MHz at 5V - defines maximum serial throughput for configuration reads/writes |
| Write Cycle Time | 10 ms maximum - determines minimum time between successive write commands |
| Endurance | 1 million write cycles - supports frequent recalibration or field-upgrade logging |
| Data Retention | 100 years at TA ≤ +85°C - ensures long-term reliability in unattended equipment |
| Operating Temperature | −40°C to +85°C - qualified for industrial and automotive under-hood applications |
Pinout & Package
AT93C56W-10SI-1.8 is supplied in an 8-lead JEDEC SOIC package (8S1), 0.150" wide body, with standard gull-wing leads and 1.27 mm pitch. Pin 1 is marked by a notch or beveled corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable for serial communication; must be held low for entire instruction sequence |
| 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 | Outputs read data or Ready/Busy status; high = ready, low = busy during write/erase |
| GND | Ground Reference | Return path for VCC and all I/O signals; requires low-impedance PCB connection |
| VCC | Power Supply | 1.8V–5.5V input; bypass capacitor (0.1 µF) recommended near pin |
| ORG | Organization Select | Not functional on 1.8V variant - fixed to x8 mode per datasheet note |
| DC | Don't Connect | No internal connection; must remain floating or tied to GND/VCC per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Three-wire serial interface | Reduces MCU GPIO count and PCB routing complexity vs. SPI/I²C |
| Self-timed write cycle | Eliminates need for external timing control or polling delay loops in firmware |
| 1.8V operation capability | Direct integration with ultra-low-power microcontrollers without level-shifting |
| Automotive-grade qualification | Meets AEC-Q100 stress test requirements for under-hood and chassis electronics |
| Lead-free/halogen-free packaging | Complies with RoHS Directive 2011/65/EU and JEDEC J-STD-020 reflow profiles |
Applications
| Industrial PLC Configuration Storage | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Storing calibrated sensor offsets, I/O mapping tables, and firmware revision flags in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed during boot and runtime via MCU GPIO-driven serial protocol. Use Value: Enables field-reprogrammable calibration without hardware change; 100-year retention prevents data loss across equipment lifecycle. | Use Scenario: Holding door lock actuator profiles, lighting dimming curves, and seat position presets in vehicle BCMs. IC Role / Device Role / Timing Role: Persistent parameter store interfaced to 16-bit automotive MCU over minimal three-wire bus. Use Value: Supports OTA updates of user preferences while maintaining AEC-Q100 compliance and −40°C cold-cranking operation. |
| Medical Infusion Pump Settings | Smart Energy Meter Calibration Data |
Use Scenario: Securing drug library parameters, dose limits, and alarm thresholds in Class II medical devices requiring traceable configuration history. IC Role / Device Role / Timing Role: Tamper-resistant EEPROM accessed only during service mode; protected by EWDS after programming. Use Value: Meets IEC 62304 software safety requirements via deterministic write timing and 1M-cycle endurance for audit logs. | Use Scenario: Storing metering IC gain coefficients, phase compensation values, and tariff schedules updated quarterly via HAN interface. IC Role / Device Role / Timing Role: Low-power serial NV memory sharing VCC rail with metrology SoC; standby current <0.1 µA at 1.8V. Use Value: Extends battery life in AMI endpoints while ensuring metrological accuracy traceability over 10+ year deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95256-DFMN6TP/K | 256-Kbit SPI interface, 2.5–5.5V supply, 20 MHz clock, 5 ms write cycle | Higher density and faster interface but requires SPI peripheral and additional CS line | Select when migrating to higher-capacity storage with existing SPI infrastructure |
| AT25020B-MAHL-T | 2-Kbit SPI EEPROM, 1.8–5.5V, 20 MHz, 5 ms write, same SOIC-8 package | Pin-compatible SPI replacement with identical voltage range and footprint | Choose for drop-in upgrade where SPI is preferred over three-wire protocol |
Compared with AT93C56W-10SI-1.8, M95256-DFMN6TP/K offers 128× capacity increase and 4× faster clock but adds SPI overhead; AT25020B-MAHL-T matches density and voltage while simplifying firmware migration via SPI compatibility - both avoid ORG pin dependency present in legacy three-wire architecture.
Availability
AT93C56W-10SI-1.8 is available at Aetrix Electronics and suitable for industrial PLCs, automotive body control modules, medical infusion pumps, and smart energy meters requiring stable component supply across extended product lifecycles.
Supply support for AT93C56W-10SI-1.8 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 nonvolatile memory solutions for industrial, automotive, and consumer markets.
The AT93C56W-10SI-1.8 belongs to Microchip's legacy serial EEPROM family designed for cost-sensitive, space-constrained applications needing reliable, low-voltage configuration storage with minimal MCU resource usage.
FAQ
What is the function of the ORG pin on the AT93C56W-10SI-1.8?
The ORG pin selects internal memory organization: tied to VCC for 128×16 mode, grounded for 256×8 mode. However, per the official datasheet, this feature is not available on the 1.8V variant AT93C56W-10SI-1.8 - it operates exclusively in 256×8 mode regardless of ORG state. This behavior is explicitly documented in the "Note" section of Figure 1 and confirmed in Table 7.
Does the AT93C56W-10SI-1.8 support full-array erase and write operations?
Yes, the AT93C56W-10SI-1.8 supports ERAL (Erase All) and WRAL (Write All) instructions, but only when VCC is within 4.5V to 5.5V. These commands are invalid at 1.8V or 2.7V supply levels. The device outputs Ready/Busy status on DO during execution, and both instructions require prior EWEN activation.
What is the maximum clock frequency supported by the AT93C56W-10SI-1.8 at 1.8V?
At 1.8V supply, the AT93C56W-10SI-1.8 supports a maximum SK clock frequency of 0.25 MHz, as specified in Table 4 (fSK row, 1.8V ≤ VCC ≤ 5.5V column). This is significantly lower than the 2 MHz maximum achievable at 5V, reflecting reduced internal timing margins at low voltage.
Is the AT93C56W-10SI-1.8 pin-compatible with other members of the AT93Cxx family?
Yes, the AT93C56W-10SI-1.8 shares identical 8-lead SOIC pinout and signal definitions with AT93C46 and AT93C66 variants. However, memory size differs (1K/2K/4K), and ORG functionality varies - AT93C56W-10SI-1.8 fixes organization to 256×8, unlike the 1.8V versions of AT93C46/AT93C66 which retain ORG selectivity per datasheet Table 7 notes.
What packaging options are available for the AT93C56W-10SI-1.8?
The AT93C56W-10SI-1.8 is offered exclusively in the 8-lead JEDEC SOIC package (8S1), 0.150" wide body, with gull-wing leads and 1.27 mm pitch. Other variants like AT93C56W-10SI-2.7 use EIAJ SOIC (8S2), but the -1.8 suffix version is standardized to JEDEC SOIC per ordering information on page 12 of the datasheet.
AT93C56W-10SI-1.8 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:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT93C56W-10SI-1.8 FAQ
1.How can I place an order for AT93C56W-10SI-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C56W-10SI-1.8 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-10SI-1.8 reliable?
The price and inventory of AT93C56W-10SI-1.8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT93C56W-10SI-1.8 is usually 5 days.
3.What payment methods are accepted for AT93C56W-10SI-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C56W-10SI-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C56W-10SI-1.8?
AT93C56W-10SI-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C56W-10SI-1.8 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-10SI-1.8?
For technical support, including AT93C56W-10SI-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C56W-10SI-1.8 requirements.
6.How does Aetrix verify that AT93C56W-10SI-1.8 is sourced from the original manufacturer or authorized distributors?
All AT93C56W-10SI-1.8 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-10SI-1.8 meets industry standards.
7.What is the process for return or replacement of AT93C56W-10SI-1.8?
All AT93C56W-10SI-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C56W-10SI-1.8, 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-10SI-1.8 part is unused and in its original packaging.
Return procedure for AT93C56W-10SI-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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