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Microchip Technology AT93C56A-10PI-1.8
- Part No.:
- AT93C56A-10PI-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT93C56A-10PI-1.8.pdf
- Description:
- IC EEPROM 2KBIT 3-WIRE 2MHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,119
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Product details
Overview
AT93C56A-10PI-1.8 from Microchip Technology (formerly Atmel) is a 2 Kbit serial EEPROM with 3-wire interface, supporting 1.8V to 5.5V supply and user-selectable 256 × 8 or 128 × 16 organization via ORG pin. 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 sensor nodes.
For engineers reviewing the AT93C56A-10PI-1.8 datasheet, AT93C56A-10PI-1.8 pinout, AT93C56A-10PI-1.8 application, or AT93C56A-10PI-1.8 equivalent, key selection criteria include low-voltage operation down to 1.8V, PDIP-8 packaging, automotive-grade temperature range (−40°C to +85°C), and compatibility with legacy 3-wire SPI-like host interfaces requiring CS/SK/DI/DO timing compliance.
Technical Context
The AT93C56A-10PI-1.8 implements a synchronous 3-wire serial protocol with Chip Select (CS), Serial Clock (SK), and bidirectional Data I/O (DI/DO). Its internal organization is dynamically selected by the ORG pin: tied to VCC enables 128 × 16 mode; grounded enables 256 × 8 mode. No external erase cycle is required-write and erase are self-timed and instruction-triggered.
It supports sequential read with automatic address increment and READY/BUSY status reporting via DO during write/erase when CS is pulsed high after tCS ≥ 250 ns. The device operates across 1.8V–5.5V with standby current as low as 0.1 µA at 1.8V, making it suitable for battery-backed systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2048 bits (256 × 8 or 128 × 16 configurable) |
| Supply Voltage Range | 1.8V to 5.5V - enables direct interface with 1.8V logic and mixed-voltage systems |
| Interface Type | 3-wire serial (CS, SK, DI/DO) - requires no dedicated SPI peripheral; compatible with GPIO bit-banging |
| Max Clock Frequency | 2 MHz at 5V - supports fast configuration reads without CPU overhead |
| Write Cycle Time | 10 ms maximum - deterministic non-blocking timing for firmware state saves |
| Endurance | 1 million write cycles - sufficient for daily calibration updates over 27 years |
| Data Retention | 100 years at 25°C - ensures long-term reliability in unpowered storage |
Pinout & Package
AT93C56A-10PI-1.8 is packaged in an 8-lead PDIP (0.300" wide, JEDEC MS-001 BA compliant) with 2.54 mm lead pitch. Pin 1 is marked by notch or dot; package meets RoHS, lead-free, and halogen-free requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable: must be held low during instruction transfer and data exchange |
| SK | Serial Clock | Input clock synchronizing all data transfers; rising edge samples DI, falling edge outputs DO |
| DI | Data Input | Serial input for instructions, addresses, and write data; high-impedance when not selected |
| DO | Data Output | Serial output for read data and READY/BUSY status; tri-stated when CS high |
| VCC | Power Supply | 1.8V–5.5V supply; decoupling capacitor required within 10 mm of pin |
| GND | Ground | Reference return path for all signals and power; connect to system ground plane |
| ORG | Organization Select | Connect to VCC for 128×16 mode; ground for 256×8 mode; unconnected defaults to x16 (not supported on 1.8V variants) |
| DC | Don't Connect | No internal connection; must remain 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 eliminates software address mapping overhead |
| Self-timed write/erase | No external timing control needed - firmware waits only for DO status or fixed 10 ms timeout |
| Low-power standby | 0.1 µA max at 1.8V enables multi-year battery operation in maintenance-free sensors |
| Industrial temperature grade | Rated for −40°C to +85°C operation - validated for factory automation and outdoor metering |
| READY/BUSY status reporting | DO pin returns real-time write progress without polling delay or additional pins |
Applications
| Industrial PLC Configuration Storage | Automotive Sensor Calibration Data |
|---|---|
Use Scenario: Storing I/O mapping tables, PID tuning parameters, and fault log history in programmable logic controllers deployed in manufacturing lines. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed during boot and runtime reconfiguration via microcontroller GPIO bit-banged 3-wire interface. Use Value: Ensures deterministic startup behavior and field-upgradable settings without requiring external voltage supervisors or backup capacitors. | Use Scenario: Retaining temperature-compensated offset/gain coefficients for pressure and oxygen sensors in engine control units. IC Role / Device Role / Timing Role: Dedicated calibration memory updated during end-of-line programming and read at power-on reset to initialize ADC compensation routines. Use Value: Maintains measurement accuracy across thermal cycling and vehicle lifetime without recalibration service intervals. |
| Smart Energy Meter Firmware Parameters | Medical Diagnostic Device Settings |
Use Scenario: Holding tariff schedules, pulse constants, and communication protocol keys in ANSI C12.19-compliant electricity meters. IC Role / Device Role / Timing Role: Secure parameter store accessed only by authenticated firmware during secure boot and OTA update verification. Use Value: Enables regulatory-compliant data integrity with 100-year retention and tamper-resistant write protection via EWDS instruction. | Use Scenario: Preserving user-selected display contrast, alarm thresholds, and language preferences in portable ultrasound and ECG analyzers. IC Role / Device Role / Timing Role: Low-power persistent settings memory powered directly from coin-cell backup during main power loss. Use Value: Guarantees immediate usability after battery replacement with zero setup latency or data re-entry. |
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); 2.5V–5.5V supply; 256 Kbit density | Requires SPI peripheral instead of GPIO bit-banging; higher capacity but no organization flexibility | Choose when migrating to SPI-native MCUs and needing larger storage without hardware redesign |
| CAT93C56VI-GT3 | Same 2 Kbit size and 3-wire interface; 1.8V–5.5V; SOIC-8 package only (no PDIP) | Lacks PDIP option; identical timing and instruction set but different manufacturer qualification | Choose when SOIC-8 footprint is preferred and AEC-Q100 qualification is required for automotive use |
Compared with M95256-WMN6TP and CAT93C56VI-GT3, the AT93C56A-10PI-1.8 uniquely supports hardware-selectable memory organization in PDIP-8, enabling drop-in replacement in legacy through-hole designs while maintaining 1.8V operation and industrial temperature rating.
Availability
AT93C56A-10PI-1.8 is available at Aetrix Electronics and suitable for industrial PLCs, automotive sensor modules, smart energy meters, and medical diagnostic devices requiring stable component supply across extended product lifecycles.
Supply support for AT93C56A-10PI-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 applications.
The AT93C56A-10PI-1.8 belongs to Microchip's legacy serial EEPROM product line, designed specifically for cost-sensitive, space-constrained systems requiring reliable, low-voltage, pin-efficient configuration storage with minimal firmware overhead.
FAQ
What is the operating voltage range for AT93C56A-10PI-1.8?
The AT93C56A-10PI-1.8 operates from 1.8V to 5.5V, supporting direct integration with 1.8V, 2.5V, 3.3V, and 5V logic domains. Its 1.8V minimum enables use in ultra-low-power battery-powered systems where other EEPROMs require level-shifting or regulators.
Does AT93C56A-10PI-1.8 support both 8-bit and 16-bit memory organization?
Yes, AT93C56A-10PI-1.8 supports user-selectable organization: tie ORG to VCC for 128 × 16 mode (16-bit words), or to GND for 256 × 8 mode (8-bit bytes). This hardware configuration avoids software address translation and optimizes bus efficiency for specific MCU architectures.
What package type is used for AT93C56A-10PI-1.8?
AT93C56A-10PI-1.8 uses an 8-lead PDIP (Plastic Dual Inline Package) with 0.300" body width and 2.54 mm lead pitch. It is RoHS-compliant, lead-free, and halogen-free, meeting industrial temperature requirements (−40°C to +85°C).
How does the AT93C56A-10PI-1.8 indicate write completion status?
The AT93C56A-10PI-1.8 reports READY/BUSY status on the DO pin: after initiating a write, if CS is brought high for ≥250 ns, DO outputs '1' when complete and '0' while busy. This eliminates need for fixed delays or external polling timers in firmware.
Is AT93C56A-10PI-1.8 pin-compatible with older AT93C56 versions?
Yes, AT93C56A-10PI-1.8 maintains full pin-to-pin and functional compatibility with prior AT93C56 revisions in PDIP-8, including identical pinout, instruction set, timing, and electrical characteristics - enabling seamless drop-in replacement without PCB or firmware changes.
AT93C56A-10PI-1.8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT93C56A-10PI-1.8 FAQ
1.How can I place an order for AT93C56A-10PI-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C56A-10PI-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 AT93C56A-10PI-1.8 reliable?
The price and inventory of AT93C56A-10PI-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 AT93C56A-10PI-1.8 is usually 5 days.
3.What payment methods are accepted for AT93C56A-10PI-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C56A-10PI-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C56A-10PI-1.8?
AT93C56A-10PI-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C56A-10PI-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 AT93C56A-10PI-1.8?
For technical support, including AT93C56A-10PI-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C56A-10PI-1.8 requirements.
6.How does Aetrix verify that AT93C56A-10PI-1.8 is sourced from the original manufacturer or authorized distributors?
All AT93C56A-10PI-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 AT93C56A-10PI-1.8 meets industry standards.
7.What is the process for return or replacement of AT93C56A-10PI-1.8?
All AT93C56A-10PI-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C56A-10PI-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 AT93C56A-10PI-1.8 part is unused and in its original packaging.
Return procedure for AT93C56A-10PI-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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