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Microchip Technology AT93C56A-10TI-2.7
- Part No.:
- AT93C56A-10TI-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AT93C56A-10TI-2.7.pdf
- Description:
- IC EEPROM 2KBIT 3-WIRE 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,633
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Product details
Overview
AT93C56A-10TI-2.7 from Microchip Technology (formerly Atmel) is a 2K-bit serial EEPROM with 3-wire interface, user-selectable 256 × 8 or 128 × 16 organization via ORG pin, 2.7V to 5.5V supply range, and automotive-grade industrial temperature operation (–40°C to +85°C) in 8-lead TSSOP package. It delivers 1 million write cycles and 100-year data retention for embedded configuration storage in power-constrained systems.
For engineers reviewing the AT93C56A-10TI-2.7 datasheet, AT93C56A-10TI-2.7 pinout, AT93C56A-10TI-2.7 application, or AT93C56A-10TI-2.7 equivalent, key selection criteria include low-voltage serial EEPROM compatibility, 3-wire timing compliance at 2 MHz (5V), self-timed 10 ms max write cycle, ORG-pin configurable memory width, and TSSOP-8 footprint suitability for space-constrained industrial control and automotive subsystems.
Technical Context
The AT93C56A-10TI-2.7 implements a synchronous 3-wire serial interface (CS/SK/DI/DO) with instruction-based command set including READ, WRITE, ERASE, EWEN, and EWDS. Its internal architecture supports sequential read with automatic address increment and READY/BUSY status reporting via DO during write/erase operations.
Memory organization is dynamically selected by the ORG pin: tied to VCC enables 128 × 16 mode; grounded enables 256 × 8 mode. The device operates across 2.7V–5.5V without external level shifting and maintains full AC/DC specification compliance-including tSKH/tSKL ≥250 ns and ISB2 ≤10.0 µA at 2.7V-within its rated industrial temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2048 bits (256 × 8 or 128 × 16 configurable) |
| Supply Voltage Range | 2.7V to 5.5V - enables direct integration into 3.3V and 5V logic domains without voltage translation |
| Max Clock Frequency | 2 MHz at VCC = 5V - defines maximum serial throughput of ~200 kbit/s for 8-bit reads |
| Write Cycle Time | 10 ms maximum - determines minimum time between successive write commands |
| Endurance | 1 million write cycles - supports frequent field-updatable parameter storage in industrial controllers |
| Data Retention | 100 years at 25°C - ensures long-term reliability for calibration data and security keys |
| Operating Temperature | –40°C to +85°C - qualified for under-hood automotive and factory-floor industrial environments |
Pinout & Package
AT93C56A-10TI-2.7 is housed in an 8-lead Thin Shrink Small Outline Package (TSSOP), 0.170" wide, with 0.65 mm lead pitch and exposed pad not present. Pin 1 is marked by a beveled corner or dot; package dimensions are D = 3.00 mm (max), E = 6.40 mm (BSC), E1 = 4.40 mm (nom).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable for serial communication; must be held low during instruction and data transfer |
| SK | Serial Clock | Synchronizes all data input (DI) and output (DO) transitions; rising edge samples DI, falling edge outputs DO |
| DI | Data Input | Receives start bit, op code, address, and write data; high-impedance when CS is high |
| DO | Data Output | Outputs read data or READY/BUSY status; high-impedance when CS is high or during write cycle unless queried |
| VCC | Power Supply | Primary supply rail (2.7V–5.5V); powers internal logic and EEPROM array |
| GND | Ground | Reference return path for VCC and all I/O signals |
| ORG | Organization Select | Configures memory width: VCC = 128×16, GND = 256×8; unconnected defaults to x16 on 2.7V devices |
| DC | Don't Connect | No internal connection; must be left floating or tied to GND/VCC per layout best practice (no electrical function) |
Key Features
| Feature | Design Value |
|---|---|
| User-selectable memory organization | Hardware-configurable 256 × 8 or 128 × 16 layout via ORG pin eliminates firmware rework for byte- vs word-oriented systems |
| Self-timed write cycle | 10 ms max internal timing removes need for external delay circuitry or polling overhead in host firmware |
| 3-wire serial interface | Minimal GPIO usage (CS/SK/DI/DO) reduces MCU pin count and PCB routing complexity versus SPI or I²C |
| Automotive-grade qualification | Extended temperature range (–40°C to +85°C) and AEC-Q200 alignment support deployment in engine control, body electronics, and ADAS modules |
| Low standby current | 6.0 µA typical at 2.7V enables battery-backed applications with multi-year shelf life |
Applications
| Industrial PLC Configuration Storage | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Storing calibrated sensor offsets, I/O mapping tables, and firmware revision flags in programmable logic controllers deployed in factory automation lines. IC Role / Device Role / Timing Role: Nonvolatile configuration register providing persistent parameter storage accessible via minimal 3-wire bus during boot and runtime updates. Use Value: Enables field-reprogrammable calibration without hardware changes; 1M endurance supports weekly firmware updates over 20-year equipment lifecycle. |
Use Scenario: Holding door lock actuator profiles, window position limits, and lighting dimming curves in vehicle body control units operating across –40°C to +85°C ambient. IC Role / Device Role / Timing Role: Serial EEPROM interfacing directly with 3.3V microcontroller SPI-compatible GPIO pins for secure, low-power parameter retention. Use Value: Eliminates need for external voltage translators; 2.7V min VCC ensures reliable operation during cold-cranking (battery dip to 6V system, 3.3V rail sag). |
| Medical Infusion Pump Calibration | Smart Energy Meter Firmware Settings |
Use Scenario: Storing drug library coefficients, flow rate compensation tables, and safety-critical alarm thresholds in Class II medical infusion pumps requiring regulatory traceability. IC Role / Device Role / Timing Role: Tamper-resistant nonvolatile memory accessed only during authorized service mode, with write-protection enforced by EWEN/EWDS protocol. Use Value: 100-year data retention meets FDA 21 CFR Part 11 archival requirements; 1M write cycles accommodate full recalibration every 6 months over 20 years. |
Use Scenario: Maintaining tariff schedules, meter ID, phase calibration constants, and tamper-event logs in ANSI C12.20-compliant electricity meters deployed in utility substations. IC Role / Device Role / Timing Role: Low-power serial EEPROM supporting infrequent writes (<10/day) and frequent reads during billing cycle reporting. Use Value: 6.0 µA standby current at 2.7V extends supercapacitor backup runtime to >72 hours during mains outage; TSSOP-8 footprint fits tight meter PCB layouts. |
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 (not 3-wire); 2.5V–5.5V supply; 256 Kbit density; no ORG pin | Requires dedicated SPI peripheral; higher density suits larger configuration sets but increases cost and footprint | Select when existing design uses SPI peripherals and requires >2Kbit capacity; verify timing compatibility with host clock generator |
| STK12C68-55I | NVSRAM with parallel interface; 5V-only; 64 Kbit; built-in lithium backup; no serial protocol | Demands 8+ address/data lines and control signals; suited for high-speed random access, not serial bus constrained designs | Choose only if application requires nanosecond-level random read/write latency and battery-backed SRAM behavior-not serial EEPROM replacement |
Compared with M95256-WMN6TP and STK12C68-55I, the AT93C56A-10TI-2.7 uniquely balances ultra-low pin count (4 active pins), hardware-configurable organization, and guaranteed 2.7V operation-making it optimal for cost-sensitive, space-constrained industrial and automotive nodes where 3-wire simplicity and voltage margin are primary constraints.
Availability
AT93C56A-10TI-2.7 is available at Aetrix Electronics and suitable for industrial PLCs, automotive body control modules, medical infusion pumps, and smart energy meters requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for AT93C56A-10TI-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 memory solutions, with broad industrial and automotive qualification expertise.
The AT93C56A-10TI-2.7 belongs to Microchip's legacy Atmel serial EEPROM product line, designed specifically for low-pin-count, low-voltage embedded systems needing robust, field-updatable nonvolatile storage without complex interface overhead.
FAQ
What is the maximum clock frequency supported by the AT93C56A-10TI-2.7?
The AT93C56A-10TI-2.7 supports up to 2 MHz SK clock frequency at VCC = 4.5V to 5.5V. At 2.7V ≤ VCC ≤ 5.5V, the maximum is 1 MHz, and at 1.8V ≤ VCC ≤ 5.5V, it drops to 0.25 MHz. These values are specified in the AC Characteristics table and define the upper limit for reliable serial data transfer timing in the AT93C56A-10TI-2.7.
How does the ORG pin affect memory organization in the AT93C56A-10TI-2.7?
In the AT93C56A-10TI-2.7, the ORG pin selects between two memory configurations: when tied to VCC, the device operates as 128 words × 16 bits; when tied to GND, it operates as 256 words × 8 bits. Unconnected, the internal 1 MΩ pull-up defaults to x16 mode. This feature is not available on 1.8V variants but is fully functional in the AT93C56A-10TI-2.7 (2.7V version).
Does the AT93C56A-10TI-2.7 require an external erase cycle before writing?
No, the AT93C56A-10TI-2.7 does not require a separate erase cycle before writing. Each WRITE instruction automatically erases the target location prior to programming, and the entire write cycle-including erase-is self-timed and completes within 10 ms maximum at 4.5V–5.5V. This simplifies firmware implementation compared to flash-based alternatives.
What is the standby current consumption of the AT93C56A-10TI-2.7 at 2.7V?
The AT93C56A-10TI-2.7 draws 6.0 µA typical and 10.0 µA maximum standby current (ISB2) at VCC = 2.7V and TA = –40°C to +85°C, with CS held low. This ultra-low quiescent draw supports battery-powered or energy-harvesting applications where multi-year shelf life is required without compromising accessibility.
Is the AT93C56A-10TI-2.7 pin-compatible with other packages in the AT93C56A family?
The AT93C56A-10TI-2.7 shares identical pin functions and ordering logic with all AT93C56A variants (e.g., -10SI-2.7 SOIC, -10PI-2.7 PDIP), but physical pinouts differ across packages due to mechanical form factor. The TSSOP-8 (8A2) footprint is not mechanically interchangeable with SOIC-8 or PDIP-8; however, signal mapping (CS/SK/DI/DO/VCC/GND/ORG/DC) remains consistent across all AT93C56A-10TI-2.7 derivatives.
AT93C56A-10TI-2.7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- 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:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
AT93C56A-10TI-2.7 FAQ
1.How can I place an order for AT93C56A-10TI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C56A-10TI-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-10TI-2.7 reliable?
The price and inventory of AT93C56A-10TI-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-10TI-2.7 is usually 5 days.
3.What payment methods are accepted for AT93C56A-10TI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C56A-10TI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C56A-10TI-2.7?
AT93C56A-10TI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C56A-10TI-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-10TI-2.7?
For technical support, including AT93C56A-10TI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C56A-10TI-2.7 requirements.
6.How does Aetrix verify that AT93C56A-10TI-2.7 is sourced from the original manufacturer or authorized distributors?
All AT93C56A-10TI-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-10TI-2.7 meets industry standards.
7.What is the process for return or replacement of AT93C56A-10TI-2.7?
All AT93C56A-10TI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C56A-10TI-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-10TI-2.7 part is unused and in its original packaging.
Return procedure for AT93C56A-10TI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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