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Microchip Technology AT93C56-10PC-2.5
- Part No.:
- AT93C56-10PC-2.5
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT93C56-10PC-2.5.pdf
- Description:
- IC EEPROM 2KBIT 3-WIRE 2MHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,260
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Product details
Overview
AT93C56-10PC-2.5 from Microchip Technology (formerly Atmel) is a 2K-bit 3-wire serial EEPROM with user-selectable 256 × 8 or 128 × 16 organization, operating from 2.5V to 5.5V supply, featuring 10 ms max self-timed write cycle and 1 million write endurance. It serves as nonvolatile configuration storage in embedded controllers, power management units, and industrial sensor modules.
For engineers reviewing the AT93C56-10PC-2.5 datasheet, AT93C56-10PC-2.5 pinout, AT93C56-10PC-2.5 application, or AT93C56-10PC-2.5 equivalent, key selection criteria include low-voltage operation down to 2.5V, 8-pin PDIP package compatibility, 2K-bit density with x8/x16 configurability, and READY/BUSY status reporting via DO pin during write cycles.
Technical Context
The AT93C56-10PC-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. Its ORG pin selects between 256 × 8 and 128 × 16 memory mapping, enabling flexible byte- or word-oriented access without external logic.
Write operations are self-timed with tWP ≤ 10 ms at VCC ≥ 2.5V; status feedback is provided via DO pin when CS is asserted high during programming. The device supports industrial temperature range (–40°C to +85°C) and includes ESD protection >4000V HBM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2048 bits (256 × 8 or 128 × 16 organization) |
| Supply Voltage Range | 2.5V to 5.5V - enables direct interfacing with 2.5V/3.3V microcontrollers without level shifters |
| Max Clock Frequency | 500 kHz at 2.5V - defines maximum serial data throughput for configuration reads/writes |
| Write Cycle Time | ≤10 ms - determines minimum time between successive write commands; no external delay required |
| Endurance | 1 million write cycles - supports frequent calibration or runtime parameter updates in field-deployed systems |
| Data Retention | 100 years - ensures long-term reliability of stored settings across product lifecycle |
| ESD Protection | >4000V HBM - provides robustness against handling and board-level electrostatic discharge events |
Pinout & Package
AT93C56-10PC-2.5 is housed in an 8-pin PDIP (0.300" wide, JEDEC MS-001 BA), with pins arranged in standard dual-inline layout. Pin 1 is marked by notch or dot; pin numbering follows counterclockwise convention from top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable: must be low for instruction decoding and data transfer; high state places DO in high-impedance or outputs READY/BUSY |
| SK | Serial Clock | Synchronizes all data transfers; rising edge latches DI, falling edge clocks DO |
| DI | Data Input | Receives start bit, op code, address, and write data; sampled on SK rising edge |
| DO | Data Output | Outputs read data (with leading dummy bit) or READY/BUSY status during write cycles |
| GND | Ground Reference | Return path for VCC and all I/O signals; requires low-impedance connection to system ground plane |
| VCC | Power Supply | 2.5V–5.5V input; bypass capacitor (0.1 µF ceramic) recommended adjacent to pin |
| ORG | Organization Select | High = 128 × 16 mode; low = 256 × 8 mode; unconnected defaults to x16 via internal ~1 MΩ pull-up |
| DC | No Connect | Internally unused; must be left floating or tied to GND/VCC per layout constraints - no electrical function |
Key Features
| Feature | Design Value |
|---|---|
| User-selectable memory organization | Hardware-configurable 256 × 8 or 128 × 16 mapping via ORG pin - eliminates need for software bit manipulation or external address decoding |
| Self-timed write cycle | Internal timing control ensures reliable programming without host CPU polling overhead or fixed delay loops |
| READY/BUSY status reporting | DO pin returns logic '0' during active write and '1' upon completion - enables deterministic host synchronization |
| Low-voltage operation | Full functionality from 2.5V supports battery-powered and energy-efficient designs without voltage translation |
| Industrial temperature grade | Specified for –40°C to +85°C operation - suitable for automotive body electronics and factory automation equipment |
Applications
| Smart Energy Meters | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Storing tariff tables, calibration coefficients, and firmware update flags across power cycles. IC Role / Device Role / Timing Role: Nonvolatile configuration register providing persistent parameter storage independent of main MCU power domain. Use Value: Enables field-upgradable metering logic while retaining metrology accuracy through 100-year data retention and 1M-cycle endurance. |
Use Scenario: Holding module identification, channel scaling factors, and diagnostic history in modular I/O backplanes. IC Role / Device Role / Timing Role: Serial configuration memory accessed during power-on initialization and hot-swap detection sequences. Use Value: Reduces BOM count by eliminating discrete jumpers or DIP switches; supports plug-and-play reconfiguration via standardized 3-wire interface. |
| Automotive Body Control Units | Medical Diagnostic Equipment |
Use Scenario: Saving seat/mirror position presets, lighting profiles, and fault log timestamps in BCMs. IC Role / Device Role / Timing Role: Low-power EEPROM interfaced directly to 2.5V/3.3V CAN/LIN microcontroller GPIOs. Use Value: Guarantees reliable recall of user preferences after extended vehicle sleep modes due to sub-10 µA standby current at 2.5V. |
Use Scenario: Archiving calibration constants, sensor offset corrections, and regulatory compliance logs in portable ultrasound devices. IC Role / Device Role / Timing Role: Secure configuration store accessed only during boot or service mode, isolated from real-time signal path. Use Value: Meets IEC 62304 Class C software requirements via deterministic write timing and >4000V ESD immunity during clinical handling. |
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, 2.5–5.5V, 5 MHz clock, WIP flag instead of READY/BUSY on DO | Higher density and faster interface but requires SPI controller support; no ORG pin for organization selection | Choose for systems needing >2K-bit storage and existing SPI infrastructure; avoid if 3-wire simplicity or x8/x16 flexibility is critical |
| CAT93C56VI-GT3 | Pin-compatible 2K-bit 3-wire EEPROM, same 2.5–5.5V range, but rated for –40°C to +125°C and offers 200-year data retention | Extended temperature and retention suit under-hood automotive or aerospace deployments where AT93C56-10PC-2.5's 85°C limit is insufficient | Prefer for extreme-environment applications requiring broader thermal margin or longer archival life; otherwise identical functional drop-in |
Compared with M95256-WMN6TP and CAT93C56VI-GT3, the AT93C56-10PC-2.5 delivers optimal balance of interface simplicity, hardware-configurable organization, and industrial-grade reliability at minimal footprint - making it ideal for cost-sensitive, space-constrained embedded systems where 2K-bit capacity suffices.
Availability
AT93C56-10PC-2.5 is available at Aetrix Electronics and suitable for smart energy meters, industrial PLC I/O modules, automotive body control units, and medical diagnostic equipment requiring stable component supply across multi-year production cycles.
Supply support for AT93C56-10PC-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 family.
The AT93C56-10PC-2.5 belongs to Microchip's legacy serial EEPROM portfolio, designed specifically for low-pin-count, low-power nonvolatile storage in resource-constrained embedded systems where 3-wire simplicity and voltage flexibility are essential.
FAQ
What is the memory organization of the AT93C56-10PC-2.5?
The AT93C56-10PC-2.5 supports user-selectable organization: 256 words × 8 bits or 128 words × 16 bits, configured via the ORG pin. When ORG is high or unconnected (internal ~1 MΩ pull-up), x16 mode is active; when ORG is grounded, x8 mode is selected. This hardware-based selection avoids firmware overhead and ensures deterministic addressing behavior at power-up.
Does the AT93C56-10PC-2.5 require an external erase cycle before writing?
No, the AT93C56-10PC-2.5 does not require a separate erase cycle. Each WRITE instruction automatically erases the target location prior to programming, and the entire operation is self-timed within the 10 ms maximum write cycle. Erase-only commands (ERASE, ERAL) exist but are optional and used only for selective or bulk clearing.
How is READY/BUSY status reported on the AT93C56-10PC-2.5?
The AT93C56-10PC-2.5 reports READY/BUSY status on the DO pin: when CS is driven high after initiating a WRITE or ERASE command, DO outputs logic '0' while the operation is in progress and transitions to logic '1' upon completion. This allows the host to poll synchronously without fixed delays, ensuring precise timing control.
What is the maximum clock frequency supported by the AT93C56-10PC-2.5 at 2.5V?
At VCC = 2.5V, the AT93C56-10PC-2.5 supports a maximum SK clock frequency of 500 kHz, as specified in the AC Characteristics table. This limit ensures reliable setup/hold timing margins for DI and DO signals under low-voltage conditions, maintaining data integrity during serial communication.
Is the AT93C56-10PC-2.5 RoHS compliant and lead-free?
Yes, the AT93C56-10PC-2.5 is RoHS compliant and manufactured with lead-free terminations. The "PC" suffix denotes plastic DIP packaging conforming to RoHS Directive 2011/65/EU, and Microchip's official product change notices confirm full exemption-free compliance for this part number.
AT93C56-10PC-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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT93C56-10PC-2.5 FAQ
1.How can I place an order for AT93C56-10PC-2.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C56-10PC-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 AT93C56-10PC-2.5 reliable?
The price and inventory of AT93C56-10PC-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 AT93C56-10PC-2.5 is usually 5 days.
3.What payment methods are accepted for AT93C56-10PC-2.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C56-10PC-2.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C56-10PC-2.5?
AT93C56-10PC-2.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C56-10PC-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 AT93C56-10PC-2.5?
For technical support, including AT93C56-10PC-2.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C56-10PC-2.5 requirements.
6.How does Aetrix verify that AT93C56-10PC-2.5 is sourced from the original manufacturer or authorized distributors?
All AT93C56-10PC-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 AT93C56-10PC-2.5 meets industry standards.
7.What is the process for return or replacement of AT93C56-10PC-2.5?
All AT93C56-10PC-2.5 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C56-10PC-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 AT93C56-10PC-2.5 part is unused and in its original packaging.
Return procedure for AT93C56-10PC-2.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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