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Microchip Technology AT93C56A-10PI-2.7
- Part No.:
- AT93C56A-10PI-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT93C56A-10PI-2.7.pdf
- Description:
- IC EEPROM 2KBIT 3-WIRE 2MHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,648
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Product details
Overview
AT93C56A-10PI-2.7 from Microchip Technology (formerly Atmel) is a 2 Kbit serial EEPROM with user-selectable 256 × 8 or 128 × 16 organization, 3-wire SPI-compatible interface, 2.7–5.5 V supply range, and industrial temperature rating (−40°C to +85°C). It delivers reliable nonvolatile storage for configuration data in embedded controllers, power supplies, and sensor modules.
For engineers reviewing the AT93C56A-10PI-2.7 datasheet, AT93C56A-10PI-2.7 pinout, AT93C56A-10PI-2.7 application, or AT93C56A-10PI-2.7 equivalent, key selection factors include its dual-voltage operation, self-timed 10 ms write cycle, 1 million endurance cycles, 100-year data retention, and compatibility with legacy 3-wire microcontroller GPIO interfaces.
Technical Context
The AT93C56A-10PI-2.7 implements a synchronous 3-wire serial protocol using CS, SK, and DI/DO lines, supporting READ, WRITE, ERASE, EWEN, EWDS, ERAL, and WRAL instructions. Its ORG pin selects between x8 and x16 memory mapping, enabling flexible byte- or word-oriented access without external logic.
It operates across 2.7–5.5 V with standby current as low as 6 µA at 2.7 V and supports clock rates up to 2 MHz at 5 V. The device features READY/BUSY status reporting via DO during write/erase operations and requires no separate erase step prior to write.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2048 bits (256 × 8 or 128 × 16 organization) |
| Supply Voltage Range | 2.7 V to 5.5 V - enables direct integration with 3.3 V and 5 V systems without level shifters |
| Interface | 3-wire serial (CS, SK, DI/DO) - uses standard GPIO pins, no dedicated SPI peripheral required |
| Max Clock Frequency | 2 MHz at 5 V - supports fast configuration reads in time-critical boot sequences |
| Write Cycle Time | 10 ms maximum - deterministic timing simplifies firmware timeout handling |
| Endurance | 1 million write cycles - suitable for dynamic parameter logging with daily updates over 27 years |
| Data Retention | 100 years at 25°C - ensures long-term calibration and serial number persistence in unpowered devices |
Pinout & Package
AT93C56A-10PI-2.7 is packaged in an 8-lead PDIP (0.300" wide), pin-compatible with JEDEC MS-001BA. Pin functions are electrically defined and validated per Atmel Rev. 3378E.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; must be held low for entire instruction sequence including address and data transfer |
| SK | Serial Clock | Input-only; rising edge clocks data in/out; frequency up to 2 MHz at 5 V |
| DI | Data Input | Serial instruction and address input; latched on SK rising edge |
| DO | Data Output | Tri-state output; returns data, READY/BUSY status, or high-impedance when CS high |
| VCC | Power Supply | 2.7–5.5 V supply; decoupling capacitor required within 10 mm of pin |
| GND | Ground | Reference return path for all I/O and internal circuitry |
| ORG | Organization Select | Connect to VCC for 128 × 16 mode; ground for 256 × 8 mode; unconnected defaults to x16 (not valid on 1.8 V variants) |
| DC | Don't Connect | No internal connection; must remain floating or tied to GND/VCC per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| User-selectable memory organization | Hardware-configurable x8/x16 mapping via ORG pin eliminates firmware branching for byte vs. word access |
| Self-timed write cycle | Fixed 10 ms max duration enables predictable interrupt latency and eliminates need for polling or external timers |
| READY/BUSY status reporting | DO pin outputs logic '1' (ready) or '0' (busy) after CS high, allowing host to avoid blind delays |
| Industrial temperature grade | Specified operation from −40°C to +85°C supports deployment in automotive ECUs and outdoor industrial sensors |
| Low-power standby mode | 6 µA max ISB2 at 2.7 V reduces quiescent current in battery-backed systems |
Applications
| Motor Control Configuration Storage | Smart Power Supply Calibration |
|---|---|
Use Scenario: Storing motor winding resistance, commutation angle offsets, and thermal derating tables in BLDC driver modules. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding factory-trimmed parameters accessed during power-up initialization. Use Value: Enables field-replaceable motor modules with plug-and-play calibration, eliminating manual setup per unit. | Use Scenario: Retaining voltage/current regulation coefficients, protection thresholds, and soft-start profiles in programmable DC-DC converters. IC Role / Device Role / Timing Role: Serial configuration store read during startup to configure digital PWM controller registers. Use Value: Allows single-hardware design to support multiple output voltages via software-defined settings stored in AT93C56A-10PI-2.7. |
| Industrial Sensor Linearization Data | Embedded System Bootloader Parameters |
Use Scenario: Holding polynomial coefficients and lookup table segments used to correct analog sensor nonlinearity (e.g., pressure, temperature transducers). IC Role / Device Role / Timing Role: Read-on-demand coefficient store accessed by MCU ADC firmware during signal processing pipeline. Use Value: Achieves ±0.1% full-scale accuracy without requiring higher-resolution ADC hardware or external calibration ICs. | Use Scenario: Storing bootloader jump address, firmware version hash, secure boot flags, and watchdog timeout values in safety-critical medical devices. IC Role / Device Role / Timing Role: Early-boot configuration memory read before main application starts; supports fail-safe recovery paths. Use Value: Ensures deterministic boot behavior and enables field firmware rollback without modifying flash memory layout. |
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; 2.5–5.5 V supply; 5 MHz max clock | Requires SPI peripheral instead of GPIO bit-banging; larger memory not needed for 2K use cases | Select when existing design uses hardware SPI and higher speed or capacity is acceptable |
| CAT25256VI-GT3 | 3-wire interface compatible; 32K × 8 organization; 1.8–5.5 V supply; 10 MHz max clock; no ORG pin | Lacks hardware organization select; supports lower 1.8 V operation but oversized for 2K requirement | Choose only if 1.8 V operation is mandatory and firmware can manage fixed x8 mapping |
Compared with M95256-WMN6TP and CAT25256VI-GT3, the AT93C56A-10PI-2.7 provides unique hardware-configurable memory mapping and optimal 2 Kbit density for cost-sensitive, GPIO-driven designs where pin count and BOM simplicity are critical.
Availability
AT93C56A-10PI-2.7 is available at Aetrix Electronics and suitable for motor control, power supply calibration, sensor linearization, and bootloader parameter storage requiring stable component supply across industrial temperature ranges.
Supply support for AT93C56A-10PI-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 nonvolatile memory solutions, with broad industrial and automotive qualification coverage.
The AT93C56A-10PI-2.7 belongs to Microchip's legacy serial EEPROM product line, designed specifically for low-pin-count, low-power, and GPIO-based configuration storage in resource-constrained embedded systems.
FAQ
What is the maximum clock frequency supported by AT93C56A-10PI-2.7?
The AT93C56A-10PI-2.7 supports a maximum SK clock frequency of 2 MHz at 5 V, 1 MHz at 2.7–5.5 V, and 0.25 MHz at 1.8–2.7 V. These values are specified in the AC Characteristics table of the official datasheet (Rev. 3378E), and timing margins must be maintained per tSKH/tSKL requirements.
Does AT93C56A-10PI-2.7 require a separate erase command before writing?
No, the AT93C56A-10PI-2.7 does not require a separate erase command before writing. Its self-timed WRITE cycle automatically handles both erase and program operations internally. However, the device must first be placed in Erase/Write Enable (EWEN) state before any WRITE or ERASE instruction is accepted.
How is memory organization selected on AT93C56A-10PI-2.7?
Memory organization on AT93C56A-10PI-2.7 is selected via the ORG pin: connect ORG to VCC for 128 × 16 (x16) mode, to GND for 256 × 8 (x8) mode. If left unconnected, the internal 1 MΩ pull-up selects x16 mode - but this behavior is not guaranteed on 1.8 V variants and is not applicable to AT93C56A-10PI-2.7.
What packages are available for AT93C56A-10PI-2.7?
The AT93C56A-10PI-2.7 is specifically offered in the 8-lead PDIP (0.300" wide, package code 8P3). Other variants like AT93C56A-10SI-2.7 use SOIC, but the -PI suffix denotes PDIP packaging per Microchip's ordering information table in Rev. 3378E.
Is AT93C56A-10PI-2.7 qualified for automotive applications?
The AT93C56A-10PI-2.7 is rated for industrial temperature (−40°C to +85°C) and is not AEC-Q100 qualified. While the broader AT93C56A/66A family includes automotive-grade versions (e.g., AT93C56A-10SE-2.7), the -PI-2.7 variant is intended for industrial and commercial use only.
AT93C56A-10PI-2.7 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:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT93C56A-10PI-2.7 FAQ
1.How can I place an order for AT93C56A-10PI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C56A-10PI-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 AT93C56A-10PI-2.7 reliable?
The price and inventory of AT93C56A-10PI-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 AT93C56A-10PI-2.7 is usually 5 days.
3.What payment methods are accepted for AT93C56A-10PI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C56A-10PI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C56A-10PI-2.7?
AT93C56A-10PI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C56A-10PI-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 AT93C56A-10PI-2.7?
For technical support, including AT93C56A-10PI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C56A-10PI-2.7 requirements.
6.How does Aetrix verify that AT93C56A-10PI-2.7 is sourced from the original manufacturer or authorized distributors?
All AT93C56A-10PI-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 AT93C56A-10PI-2.7 meets industry standards.
7.What is the process for return or replacement of AT93C56A-10PI-2.7?
All AT93C56A-10PI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C56A-10PI-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 AT93C56A-10PI-2.7 part is unused and in its original packaging.
Return procedure for AT93C56A-10PI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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