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Microchip Technology AT93C56-10PI-2.5
- Part No.:
- AT93C56-10PI-2.5
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT93C56-10PI-2.5.pdf
- Description:
- IC EEPROM 2KBIT 3-WIRE 2MHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,513
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Product details
Overview
AT93C56-10PI-2.5 from Microchip Technology (formerly Atmel) is a 2K-bit serial EEPROM with 3-wire interface, supporting 256 × 8 or 128 × 16 organization selectable via ORG pin, 2.5V–5.5V supply range, 10 ms max self-timed write cycle, and industrial temperature operation (−40°C to +85°C). It delivers high reliability for configuration storage in embedded controllers and power management systems.
For engineers reviewing the AT93C56-10PI-2.5 datasheet, AT93C56-10PI-2.5 pinout, AT93C56-10PI-2.5 application, or AT93C56-10PI-2.5 equivalent, key selection criteria include low-voltage compatibility (2.5V min), industrial-grade temperature rating, 3-wire serial interface timing at 500 kHz (2.5V), and pin-compatible alternatives across the AT93Cxx family.
Technical Context
The AT93C56-10PI-2.5 implements a synchronous 3-wire serial interface (CS, SK, DI/DO) with instruction-based command set including READ, WRITE, ERASE, EWEN, and EWDS. Memory organization is dynamically selected by the ORG pin state-logic high enables 128-word × 16-bit mode; logic low enables 256-word × 8-bit mode.
It features a self-timed write cycle (tWP ≤ 10 ms at VCC ≥ 2.5V), READY/BUSY status reporting via DO pin during programming, and no pre-erase requirement. Standby current is 10.0 µA max at 2.5V/85°C, and AC timing supports 500 kHz clock frequency under 2.5V operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2048 bits (256 × 8 or 128 × 16 words) |
| Supply Voltage Range | 2.5V to 5.5V - enables direct interfacing with 2.5V/3.3V microcontrollers without level shifting |
| Write Cycle Time | ≤10 ms - deterministic self-timed erase-and-write eliminates need for external timing control |
| Endurance | 1 million write cycles - supports frequent firmware or calibration updates in field-deployed devices |
| Data Retention | 100 years at 25°C - ensures long-term configuration integrity in unpowered storage |
| Operating Temperature | −40°C to +85°C - qualified for industrial and automotive under-hood applications |
| Interface Clock Rate | 500 kHz max at 2.5V - defines maximum SPI-like throughput for configuration reads/writes |
Pinout & Package
AT93C56-10PI-2.5 is housed in an 8-pin PDIP package (package code 8P3), 0.300" wide, with standard through-hole mounting. Pin 1 is marked by notch or dot; pin numbering follows JEDEC MS-001 BA convention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable: device responds only when CS = low; used to daisy-chain multiple serial EEPROMs |
| SK | Serial Clock | Synchronizes all data transfers; rising edge samples DI, falling edge outputs DO |
| DI | Data Input | Receives instruction opcodes, addresses, and write data; latched on SK rising edge |
| DO | Data Output | Outputs read data or READY/BUSY status; tri-stated when CS = high |
| GND | Ground Reference | Signal and power return path; must be low-impedance for stable read/write margins |
| VCC | Power Supply | 2.5V–5.5V input; decoupling capacitor (0.1 µF) required within 10 mm of VCC/GND pins |
| ORG | Organization Select | High = 128 × 16 mode; low = 256 × 8 mode; internal ~1 MΩ pull-up defaults to x16 if floating |
| DC | Don't Connect | No internal connection; must remain unconnected or tied to GND/VCC per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| User-selectable memory organization | Runtime-configurable 256×8 or 128×16 layout via single ORG pin - simplifies firmware adaptation across memory-width variants |
| Low-voltage operation down to 2.5V | Guaranteed functionality at 2.5V with 500 kHz clock and 10 µA standby - enables direct use in battery-backed or energy-harvesting systems |
| Self-timed write with status feedback | DO pin returns READY ('1') or BUSY ('0') after CS high - eliminates polling delays and simplifies host controller firmware |
| Industrial temperature qualification | Tested and guaranteed over −40°C to +85°C - suitable for motor drives, PLC I/O modules, and outdoor infrastructure |
| ESD protection >4000V HBM | Robust handling during board assembly and field service - reduces risk of latent damage in manufacturing environments |
Applications
| Industrial Sensor Calibration Storage | Embedded Controller Configuration |
|---|---|
Use Scenario: Storing factory-calibrated sensor offset/gain coefficients and linearization tables in pressure or temperature transmitters. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed during power-up initialization and runtime correction routines. Use Value: Enables field-replaceable sensors with unique calibration data preserved across power cycles and firmware updates. |
Use Scenario: Holding boot parameters, network MAC address, and user-defined settings in HVAC controllers and smart meters. IC Role / Device Role / Timing Role: Serial configuration memory interfaced to MCU GPIO or hardware SPI peripheral during system startup. Use Value: Reduces BOM count by eliminating need for external parallel EEPROM or flash; supports secure parameter locking via EWDS. |
| Power Management Unit Settings | Automotive Body Control Module |
Use Scenario: Saving overvoltage/undervoltage trip thresholds and fault log history in DC-DC converter supervisory ICs. IC Role / Device Role / Timing Role: Low-power serial NV memory accessed infrequently but requiring guaranteed retention over 10+ years. Use Value: Maintains safety-critical settings even after extended storage or battery depletion; withstands repeated thermal cycling. |
Use Scenario: Storing seat position presets, mirror angles, and lighting profiles in vehicle body control units. IC Role / Device Role / Timing Role: Industrial-grade EEPROM interfaced to 8-bit/16-bit automotive MCUs operating at 2.5V–5.5V supply. Use Value: Meets AEC-Q100 stress test requirements for ambient temperature and ESD robustness in passenger cabin environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT93C56-10PI | 4.5V–5.5V supply only; higher ICC (30 µA vs. 10 µA) at 2.5V operation not supported | Restricted to 5V systems; unsuitable for mixed-voltage or battery-powered designs | Select AT93C56-10PI-2.5 when main supply is 2.5V–3.3V and industrial temp range is mandatory |
| M95256-WMN6TP | 4-wire SPI interface (no ORG pin); fixed 32K × 8 organization; 2.5V–5.5V compatible; 5 ms write time | Larger capacity and faster write, but lacks x16/x8 flexibility and requires different command protocol | Choose M95256-WMN6TP when migrating to SPI-standard interface and higher density is needed |
Compared with AT93C56-10PI, the AT93C56-10PI-2.5 extends voltage range downward to 2.5V while maintaining identical pinout and instruction set; versus M95256-WMN6TP, it offers organization flexibility and simpler 3-wire control at the cost of lower density and slower write speed.
Availability
AT93C56-10PI-2.5 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 ranges and low-voltage operation.
Supply support for AT93C56-10PI-2.5 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 EEPROM family.
The AT93Cxx series was designed for space-constrained, low-power embedded systems requiring reliable nonvolatile storage with minimal interface overhead and flexible memory mapping.
FAQ
What is the memory organization of AT93C56-10PI-2.5?
The AT93C56-10PI-2.5 supports dual organization: 256 words × 8 bits or 128 words × 16 bits, selected by the ORG pin voltage. When ORG = VCC, it operates in 128 × 16 mode; when ORG = GND, it operates in 256 × 8 mode. This flexibility allows the same AT93C56-10PI-2.5 to serve both byte-oriented and word-oriented host processors without redesign.
Does AT93C56-10PI-2.5 require an external erase cycle before writing?
No. The AT93C56-10PI-2.5 performs automatic erase-before-write internally. Each WRITE instruction initiates a self-timed cycle that erases and reprograms the target location in one atomic operation. No separate ERASE command is needed unless selective location erasure is required prior to partial rewrites.
Can AT93C56-10PI-2.5 operate reliably at 2.5V?
Yes. AT93C56-10PI-2.5 is fully specified for 2.5V–5.5V operation, with AC timing validated down to 500 kHz clock rate and DC characteristics guaranteed at 2.5V. Its 10 µA max standby current at 2.5V/85°C and 10 ms write time make it suitable for low-power industrial applications where 2.5V rails are common.
How is READY/BUSY status reported during write on AT93C56-10PI-2.5?
During a WRITE cycle, the AT93C56-10PI-2.5 outputs READY/BUSY status on the DO pin. After completing the instruction, if CS is brought high for ≥250 ns, DO returns '0' (BUSY) while programming continues and '1' (READY) once complete. This eliminates need for fixed delay loops and enables efficient host polling.
Is AT93C56-10PI-2.5 pin-compatible with other AT93Cxx variants?
Yes. AT93C56-10PI-2.5 shares identical 8-pin PDIP pinout and instruction set with AT93C46, AT93C57, and AT93C66 in the same package variant (e.g., 8P3). However, memory depth differs: AT93C46 is 1K, AT93C56 is 2K, AT93C57 is 2K with rotated SOIC option, and AT93C66 is 4K - software must match address width to selected device.
AT93C56-10PI-2.5 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:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT93C56-10PI-2.5 FAQ
1.How can I place an order for AT93C56-10PI-2.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C56-10PI-2.5 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 AT93C56-10PI-2.5 reliable?
The price and inventory of AT93C56-10PI-2.5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT93C56-10PI-2.5 is usually 5 days.
3.What payment methods are accepted for AT93C56-10PI-2.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C56-10PI-2.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C56-10PI-2.5?
AT93C56-10PI-2.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C56-10PI-2.5 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 AT93C56-10PI-2.5?
For technical support, including AT93C56-10PI-2.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C56-10PI-2.5 requirements.
6.How does Aetrix verify that AT93C56-10PI-2.5 is sourced from the original manufacturer or authorized distributors?
All AT93C56-10PI-2.5 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 AT93C56-10PI-2.5 meets industry standards.
7.What is the process for return or replacement of AT93C56-10PI-2.5?
All AT93C56-10PI-2.5 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C56-10PI-2.5, 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 AT93C56-10PI-2.5 part is unused and in its original packaging.
Return procedure for AT93C56-10PI-2.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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