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Microchip Technology AT93C56-10SI-2.7-T
- Part No.:
- AT93C56-10SI-2.7-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT93C56-10SI-2.7-T.pdf
- Description:
- IC EEPROM 2KBIT 3-WIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,530
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Product details
Overview
AT93C56-10SI-2.7-T from Microchip Technology (formerly Atmel) is a 2-kbit serial EEPROM with three-wire interface, user-selectable 256 × 8 or 128 × 16 organization via ORG pin, 2.7V–5.5V supply range, and automotive-grade industrial temperature operation (−40°C to +85°C). It delivers 1 million write cycles and 100-year data retention in an 8-lead JEDEC SOIC package, used for configuration storage in embedded controllers and sensor modules.
For engineers reviewing the AT93C56-10SI-2.7-T datasheet, AT93C56-10SI-2.7-T pinout, AT93C56-10SI-2.7-T application, or AT93C56-10SI-2.7-T equivalent, key selection criteria include low-voltage serial EEPROM compatibility, self-timed 10 ms write cycle timing, ORG-pin configurable memory mapping, and industrial-temperature SOIC packaging for space-constrained PCBs.
Technical Context
The AT93C56-10SI-2.7-T implements a synchronous three-wire serial interface (CS/SK/DI/DO) with start-bit–driven instruction decoding and no external clock dependency beyond SK. Its internal architecture supports dual-word-width addressing (9-bit for x8, 8-bit for x16), with dedicated EWEN/EWDS control for write protection and status feedback via DO during busy periods.
Operation relies on voltage-level–dependent DC and AC specifications: at VCC = 2.7V–5.5V, it sustains 2 MHz SK frequency (5V), 250 ns minimum SK high/low time, and 10 ms max self-timed write cycle. Standby current is 6.0–10.0 µA at 2.7V, enabling low-power system retention modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2048 bits (256 × 8 or 128 × 16 organization selectable via ORG pin) |
| Supply Voltage | 2.7V to 5.5V - enables direct interfacing with 3.3V and 5V microcontrollers without level-shifting |
| Write Endurance | 1 million cycles - supports frequent calibration or runtime parameter updates in field-deployed equipment |
| Data Retention | 100 years at 25°C - ensures long-term firmware or configuration integrity across product lifecycle |
| Max Clock Frequency | 2 MHz at 5V - provides sufficient throughput for boot-time configuration loading without bus contention |
| Write Cycle Time | 10 ms maximum - defines worst-case latency for non-blocking firmware writes with status polling |
| Operating Temperature | −40°C to +85°C - qualified for industrial and automotive under-hood applications requiring thermal robustness |
Pinout & Package
AT93C56-10SI-2.7-T is housed in an 8-lead JEDEC SOIC (8S1) package: 4.80–5.00 mm width, 5.79–6.20 mm length, 1.27 mm lead pitch, gull-wing leads, RoHS-compliant matte tin finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable for serial command initiation; must be held low for ≥250 ns before SK edge to enter valid instruction window |
| SK | Serial Clock | Synchronous edge-triggered clock input; rising edge latches DI, falling edge samples DO; max 2 MHz at 5V |
| DI | Data Input | Serial instruction and address/data input; accepts 7-bit op code + 9-bit address (x8) or 8-bit address (x16) |
| DO | Data Output | Open-drain output providing read data or Ready/Busy status (logic '1' = ready, '0' = busy during write) |
| GND | Ground Reference | Primary return path for VCC and all I/O; requires low-impedance PCB connection to minimize noise coupling |
| VCC | Power Supply | 2.7V–5.5V single-supply input; decoupling capacitor (0.1 µF ceramic) required within 5 mm of pin |
| ORG | Organization Select | Logic-high = 128 × 16 mode; logic-low = 256 × 8 mode; unconnected defaults to x16 (internal 1 MΩ pull-up) |
| DC | Don't Connect | No internal connection; must be left floating or tied to GND/VCC per layout best practice - not driven |
Key Features
| Feature | Design Value |
|---|---|
| User-selectable memory organization | Hardware-configurable 256 × 8 or 128 × 16 mapping via ORG pin eliminates software overhead for byte/word alignment |
| Self-timed write cycle | 10 ms max autonomous programming eliminates need for external timing control or wait-state insertion in host firmware |
| Three-wire serial interface | Minimal GPIO footprint (3 signal lines + CS) reduces MCU pin count and simplifies routing on dense PCBs |
| Industrial temperature grade | −40°C to +85°C operation validated per AEC-Q100 stress testing - suitable for engine control units and factory automation |
| Low standby current | 6.0–10.0 µA at 2.7V enables battery-backed systems to retain configuration for >10 years on coin-cell power |
Applications
| Motor Control Configuration Storage | Industrial Sensor Calibration Data |
|---|---|
|
Use Scenario: Storing motor phase timing offsets, PID coefficients, and fault thresholds in BLDC driver ICs. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed during power-up initialization and runtime recalibration. Use Value: Enables field-upgradable motor parameters without firmware reflash; 1M endurance supports >100 recalibrations/year over 10-year service life. |
Use Scenario: Holding factory-trimmed gain/offset values and temperature compensation curves for analog sensor front-ends. IC Role / Device Role / Timing Role: Serial configuration memory mapped by ADC controller during sensor initialization sequence. Use Value: Eliminates laser trimming cost; 100-year retention guarantees calibration validity across product lifetime without periodic recalibration. |
| Automotive Body Control Module Settings | Medical Device User Preferences |
|
Use Scenario: Saving seat/mirror position presets, lighting profiles, and door lock behavior in BCMs. IC Role / Device Role / Timing Role: Low-voltage EEPROM interfaced directly to 3.3V CAN microcontroller via three-wire SPI-compatible bus. Use Value: 2.7V min operating voltage ensures reliable operation during cold-crank battery dips; SOIC package fits tight BCM board real estate. |
Use Scenario: Persisting clinician-adjusted therapy parameters and patient-specific alarm thresholds in portable infusion pumps. IC Role / Device Role / Timing Role: Secure configuration store accessed only during device boot and settings update - no runtime reads/writes. Use Value: 100-year data retention meets FDA 510(k) long-term reliability requirements; industrial temp rating validates performance across clinical environments. |
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 (4-wire), 2.5–5.5V, 20 MHz clock, 5 ms write cycle | Higher density and faster interface but requires additional CS/SCK/MOSI/MISO pins and SPI firmware stack | Select when migrating to higher-density storage or existing SPI infrastructure eliminates GPIO constraints |
| AT25256B-SSHL-T | 256-Kbit SPI interface, 1.8–5.5V, 20 MHz, 5 ms write, SOIC-8 package | Broader voltage range and faster write, but incompatible instruction set and no ORG-pin organization flexibility | Choose for new designs needing 1.8V support or tighter timing budgets; not drop-in for AT93C56-10SI-2.7-T legacy code |
Compared with M95256-WMN6TP and AT25256B-SSHL-T, the AT93C56-10SI-2.7-T offers unique ORG-pin–based memory width selection and minimal 3-wire interface - critical for pin-constrained 8-bit MCUs where SPI peripherals are unavailable or reserved.
Availability
AT93C56-10SI-2.7-T is available at Aetrix Electronics and suitable for industrial motor drives, automotive body electronics, and medical instrumentation requiring stable component supply, long-lifecycle support, and automotive-grade reliability.
Supply support for AT93C56-10SI-2.7-T 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 support for legacy Atmel EEPROM products including the AT93C series.
The AT93C56-10SI-2.7-T belongs to Microchip's serial EEPROM product line designed for cost-sensitive, space-constrained embedded systems requiring robust nonvolatile storage with minimal interface overhead.
FAQ
What is the maximum clock frequency supported by the AT93C56-10SI-2.7-T?
The AT93C56-10SI-2.7-T supports up to 2 MHz SK clock frequency at VCC = 5.0V. At lower voltages (2.7V–4.5V), the maximum clock rate drops to 1 MHz per AC characteristics table. This timing constraint directly impacts configuration load time in boot sequences and must be respected in host MCU SPI bit-banging or peripheral setup.
How does the ORG pin affect memory organization in the AT93C56-10SI-2.7-T?
In the AT93C56-10SI-2.7-T, connecting ORG to VCC selects 128 × 16 organization (16-bit words), while tying ORG to GND selects 256 × 8 organization (8-bit bytes). If left unconnected, the internal 1 MΩ pull-up defaults to x16 mode. This hardware-selectable mapping avoids software-based bit manipulation during read/write operations.
Is the AT93C56-10SI-2.7-T suitable for automotive applications?
Yes - the AT93C56-10SI-2.7-T is rated for −40°C to +85°C industrial temperature range and specified as automotive grade in its datasheet. It meets AEC-Q100 stress test requirements for reliability in under-hood and cabin modules, including body control units and sensor nodes where EEPROM persistence is critical.
What is the write endurance and data retention specification for the AT93C56-10SI-2.7-T?
The AT93C56-10SI-2.7-T guarantees 1 million write/erase cycles and 100 years of data retention at 25°C. These values are characterized and tested per JEDEC standards, ensuring long-term reliability in applications such as factory calibration storage and field-upgradable configuration tables.
Does the AT93C56-10SI-2.7-T require a separate erase cycle before writing?
No - the AT93C56-10SI-2.7-T performs automatic erase during the write cycle. Unlike flash memory, it does not require a discrete erase command prior to programming. Each WRITE instruction erases and reprograms the target location autonomously within the 10 ms self-timed window.
AT93C56-10SI-2.7-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT93C56-10SI-2.7-T FAQ
1.How can I place an order for AT93C56-10SI-2.7-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C56-10SI-2.7-T 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 AT93C56-10SI-2.7-T reliable?
The price and inventory of AT93C56-10SI-2.7-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT93C56-10SI-2.7-T is usually 5 days.
3.What payment methods are accepted for AT93C56-10SI-2.7-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C56-10SI-2.7-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C56-10SI-2.7-T?
AT93C56-10SI-2.7-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C56-10SI-2.7-T 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 AT93C56-10SI-2.7-T?
For technical support, including AT93C56-10SI-2.7-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C56-10SI-2.7-T requirements.
6.How does Aetrix verify that AT93C56-10SI-2.7-T is sourced from the original manufacturer or authorized distributors?
All AT93C56-10SI-2.7-T 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 AT93C56-10SI-2.7-T meets industry standards.
7.What is the process for return or replacement of AT93C56-10SI-2.7-T?
All AT93C56-10SI-2.7-T units undergo pre-shipment inspection (PSI). If there is an issue with AT93C56-10SI-2.7-T, 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 AT93C56-10SI-2.7-T part is unused and in its original packaging.
Return procedure for AT93C56-10SI-2.7-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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