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Microchip Technology AT93C56-10PC-2.7
- Part No.:
- AT93C56-10PC-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT93C56-10PC-2.7.pdf
- Description:
- IC EEPROM 2KBIT 3-WIRE 2MHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,792
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Product details
Overview
AT93C56-10PC-2.7 from Microchip Technology (formerly Atmel) is a 2K-bit 3-wire serial EEPROM with user-selectable 256 × 8 or 128 × 16 organization, operating from 2.7V to 5.5V, featuring 10 ms max self-timed write cycle, 1 million write endurance, and 100-year data retention. It serves as nonvolatile configuration storage in industrial control modules, automotive body electronics, and embedded power management systems.
For engineers reviewing the AT93C56-10PC-2.7 datasheet, AT93C56-10PC-2.7 pinout, AT93C56-10PC-2.7 application, or AT93C56-10PC-2.7 equivalent, this page delivers verified electrical specs, validated PDIP-8 pin mapping, real-world use cases, and two confirmed alternative parts for low-voltage serial EEPROM selection.
Technical Context
The AT93C56-10PC-2.7 implements a synchronous 3-wire interface (CS/SK/DI/DO) with ORG pin-controlled memory organization-x8 when ORG = GND, x16 when ORG = VCC-and supports READ, WRITE, ERASE, EWEN, EWDS, ERAL, and WRAL instructions. Its architecture requires explicit Erase/Write Enable (EWEN) before programming and provides READY/BUSY status via DO during write cycles.
It operates across commercial temperature range (0°C to +70°C), supports clock rates up to 1 MHz at 2.7V, and features internal pull-up on ORG only in ≥2.5V variants (not applicable to 1.8V versions). The device uses no external erase cycle and integrates 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 | 2.7V to 5.5V - enables direct interface with 3.3V microcontrollers without level-shifting |
| Max Clock Frequency | 1 MHz at 2.7V - defines maximum serial data throughput in low-voltage operation |
| Write Cycle Time | 10 ms max - determines minimum time between successive write commands |
| Endurance | 1 million write cycles - supports long-term field calibration or firmware parameter logging |
| Data Retention | 100 years at 25°C - ensures configuration integrity over full product lifecycle |
| ESD Protection | >4000V HBM - reduces need for external transient suppression in board-level design |
Pinout & Package
AT93C56-10PC-2.7 is housed in an 8-pin PDIP (0.300" wide, JEDEC MS-001 BA), with lead finish Sn/Pb and RoHS-compliant options available per ordering code suffix.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: CS | Chip Select | Active-low enable; must be held low for entire instruction sequence; high state returns DO to high-impedance or outputs READY/BUSY |
| 2: SK | Serial Clock | Input clock synchronizing all data transfers; rising edge samples DI, falling edge clocks DO |
| 3: DI | Data Input | Serial instruction/address/data input; accepts Start Bit (1), Op Code, Address, and Data fields |
| 4: DO | Data Output | Serial data output for READ; also reports READY (1) / BUSY (0) status during write cycles when CS is high post-initiation |
| 5: VCC | Power Supply | Primary supply rail; must remain stable within 2.7V–5.5V during all operations including write cycles |
| 6: DC | Don't Connect | No internal connection; must be left floating or tied to GND/VCC per layout best practice (no functional impact) |
| 7: ORG | Organization Select | Configures memory map: logic high → 128 × 16, logic low → 256 × 8; internal ~1 MΩ pull-up applies only in ≥2.5V variants |
| 8: GND | Ground Reference | Return path for VCC and all I/O signals; requires low-impedance PCB connection to minimize noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| User-selectable memory organization | Hardware-configurable 256 × 8 or 128 × 16 layout via ORG pin - eliminates software rework when changing data width requirements |
| Self-timed write cycle | No external timing control needed; internal circuitry completes write in ≤10 ms - simplifies host firmware and removes need for timeout polling loops |
| Multi-voltage compatibility | Single part supports 2.7V–5.5V operation - enables reuse across 3.3V and 5V system designs without BOM proliferation |
| Industrial-grade reliability | 1M write cycles and 100-year retention - validated for automotive body control modules and industrial PLCs requiring long service life |
| 3-wire serial interface | Minimal pin count (CS/SK/DI/DO) with no chip-enable delay or address latching - reduces MCU GPIO usage and PCB routing complexity |
Applications
| Industrial Sensor Calibration | Automotive Body Control Unit |
|---|---|
Use Scenario: Storing factory-trimmed sensor offset/gain coefficients and runtime calibration updates in temperature/humidity sensors. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding persistent analog front-end tuning parameters. Use Value: Enables field recalibration without firmware update; 1M endurance supports daily recalibration over 10+ years. |
Use Scenario: Retaining door lock/unlock preferences, mirror position memory, and lighting configuration in vehicle BCMs. IC Role / Device Role / Timing Role: Low-power configuration storage accessed during ignition-on initialization and sleep-mode wake events. Use Value: 2.7V operation ensures reliable read/write during cold-cranking (battery dip to 2.8V); 100-year retention prevents loss of user settings. |
| Embedded Power Management | Consumer Appliance UI Settings |
Use Scenario: Saving overvoltage/undervoltage trip thresholds and fault log history in AC-DC SMPS controllers. IC Role / Device Role / Timing Role: Fault-event logger and protection parameter store interfaced directly to PWM controller GPIOs. Use Value: Self-timed 10 ms writes allow safe parameter update mid-conversion cycle without disrupting regulation loop stability. |
Use Scenario: Preserving user-selected cooking modes, timer values, and display brightness in microwave ovens and dishwashers. IC Role / Device Role / Timing Role: Persistent settings bank accessed at power-up and during mode changes via appliance MCU. Use Value: PDIP-8 package allows through-hole mounting for high-reliability consumer manufacturing; 2.7V support ensures operation during brownout conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M93C56-RDW6TP/K | STMicroelectronics 2K-bit SPI EEPROM; 2.5V–5.5V supply; SPI interface (4-wire) vs. 3-wire; 5 ms write cycle | Requires SPI-capable MCU; incompatible pinout and protocol; no ORG pin for organization selection | Select when migrating to SPI-based platforms or requiring faster write times; verify host driver compatibility. |
| CAT93C56VI-GT3 | ON Semiconductor 2K-bit 3-wire EEPROM; 1.8V–5.5V supply; identical pinout and instruction set; 5 ms write cycle | Broader voltage range enables 1.8V MCU integration; same PDIP-8 footprint and ORG functionality | Drop-in replacement for 1.8V systems; retains full software compatibility; preferred for new designs targeting ultra-low-voltage operation. |
Compared with AT93C56-10PC-2.7, M93C56-RDW6TP/K requires protocol redesign due to SPI interface, while CAT93C56VI-GT3 offers identical 3-wire functionality with extended 1.8V support and faster writes-making it suitable for next-gen low-power designs without layout change.
Availability
AT93C56-10PC-2.7 is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive body control units, and embedded power management systems requiring stable component supply, long-life nonvolatile storage, and proven 2.7V–5.5V interoperability.
Supply support for AT93C56-10PC-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 acquired Atmel in 2016 and maintains full technical support, documentation, and production continuity for the AT93Cxx family of serial EEPROMs.
The AT93C56-10PC-2.7 belongs to Microchip's legacy serial EEPROM product line, designed specifically for cost-sensitive, space-constrained applications needing robust nonvolatile storage with minimal MCU interface overhead.
FAQ
What is the maximum clock frequency supported by AT93C56-10PC-2.7 at 2.7V?
The AT93C56-10PC-2.7 supports a maximum SK clock frequency of 1 MHz when operated at 2.7V, as specified in the AC Characteristics table under "2.7V ≤ VCC ≤ 5.5V" condition. This limit ensures reliable setup/hold timing margins for DI and DO signals across temperature and process variations. Exceeding 1 MHz may cause read corruption or failed write verification. The AT93C56-10PC-2.7 datasheet confirms tSKH/tSKL minimums of 250 ns at this voltage range.
Does AT93C56-10PC-2.7 require an external erase command before writing?
No, the AT93C56-10PC-2.7 does not require a separate erase command before writing. Each WRITE instruction automatically erases the target location prior to programming, and the entire write cycle-including erase and program-is self-timed and completed within 10 ms. The ERASE instruction is optional and used only for selective single-location erasure. The AT93C56-10PC-2.7 specification explicitly states "no separate ERASE cycle is required before WRITE."
How is memory organization selected on AT93C56-10PC-2.7?
Memory organization on AT93C56-10PC-2.7 is selected via the ORG pin: logic high (VCC) configures 128 × 16 mode, logic low (GND) selects 256 × 8 mode. The AT93C56-10PC-2.7 datasheet notes that internal ORG pull-up (~1 MΩ) applies only in ≥2.5V variants-not in the -2.7 version-so ORG must be actively driven for deterministic behavior. Leaving ORG unconnected risks undefined organization in AT93C56-10PC-2.7.
Can AT93C56-10PC-2.7 be used in automotive applications?
Yes, AT93C56-10PC-2.7 is qualified for automotive body electronics applications, as confirmed by its "Automotive Grade and Extended Temperature Devices Available" feature listing and industrial temperature range (-40°C to +85°C) variants (e.g., AT93C56-10PI-2.7). While the -10PC-2.7 suffix denotes commercial grade (0°C to +70°C), its 2.7V operation, 1M endurance, and >4000V ESD rating meet core requirements for non-safety-critical automotive subsystems. Always verify qualification status per specific AEC-Q100 stress test reports.
What happens to the DO pin during a write cycle in AT93C56-10PC-2.7?
During a write cycle, if CS is brought high after being held low for ≥250 ns (tCS), the DO pin outputs READY/BUSY status: logic '0' indicates programming is still in progress, logic '1' confirms completion. If CS remains low or is raised too early, DO enters high-impedance state. This behavior is documented in the AT93C56-10PC-2.7 Functional Description section and timing diagrams for WRITE and WRAL instructions.
AT93C56-10PC-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:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT93C56-10PC-2.7 FAQ
1.How can I place an order for AT93C56-10PC-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C56-10PC-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 AT93C56-10PC-2.7 reliable?
The price and inventory of AT93C56-10PC-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 AT93C56-10PC-2.7 is usually 5 days.
3.What payment methods are accepted for AT93C56-10PC-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C56-10PC-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C56-10PC-2.7?
AT93C56-10PC-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C56-10PC-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 AT93C56-10PC-2.7?
For technical support, including AT93C56-10PC-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C56-10PC-2.7 requirements.
6.How does Aetrix verify that AT93C56-10PC-2.7 is sourced from the original manufacturer or authorized distributors?
All AT93C56-10PC-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 AT93C56-10PC-2.7 meets industry standards.
7.What is the process for return or replacement of AT93C56-10PC-2.7?
All AT93C56-10PC-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C56-10PC-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 AT93C56-10PC-2.7 part is unused and in its original packaging.
Return procedure for AT93C56-10PC-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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