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Microchip Technology AT93C56-10TI-2.7
- Part No.:
- AT93C56-10TI-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AT93C56-10TI-2.7.pdf
- Description:
- IC EEPROM 2KBIT 3-WIRE 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,617
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Product details
Overview
AT93C56-10TI-2.7 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 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.
For engineers reviewing the AT93C56-10TI-2.7 datasheet, AT93C56-10TI-2.7 pinout, AT93C56-10TI-2.7 application, or AT93C56-10TI-2.7 equivalent, key selection criteria include low-voltage serial EEPROM compatibility, ORG-pin configurable word width, self-timed 10 ms write cycle, TSSOP-8 footprint constraints, and industrial temperature support without external voltage translation.
Technical Context
The AT93C56-10TI-2.7 implements a synchronous three-wire serial interface (CS, SK, DI/DO) with start-bit–driven instruction decoding. Its internal architecture supports dual memory organizations selected by the ORG pin state-ground for 256 × 8, VCC for 128 × 16-and includes dedicated EWEN/EWDS control for write protection.
Functional timing is voltage-dependent: max clock rate is 2 MHz at 5V, dropping to 1 MHz at 2.7V and 0.25 MHz at 1.8V; write cycle time is fixed at 10 ms (max), independent of VCC within rated range. Ready/Busy status is reported via DO pin when CS is asserted post-write initiation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2048 bits (256 × 8 or 128 × 16 words), enabling compact nonvolatile storage for device IDs, calibration data, or boot parameters |
| Supply Voltage Range | 2.7V to 5.5V - operates directly from common 3.3V or 5V rails without level-shifting circuitry |
| Interface Protocol | Three-wire serial (CS/SK/DI/DO) - minimal GPIO usage, compatible with microcontroller SPI peripherals in bit-banged mode |
| Write Endurance | 1 million cycles - supports frequent field updates such as logging or counter increments in industrial controllers |
| Data Retention | 100 years at 25°C - ensures long-term reliability for unattended equipment and infrastructure deployments |
| Operating Temperature | −40°C to +85°C - qualified for under-hood automotive modules, factory automation, and outdoor telecom hardware |
| Max Clock Frequency | 2 MHz at VCC = 5V - enables fast read access (<10 µs per byte) while maintaining noise immunity in noisy environments |
Pinout & Package
AT93C56-10TI-2.7 is housed in an 8-lead Thin Shrink Small Outline Package (TSSOP), 3.00 mm × 4.40 mm body, 0.65 mm pitch, with gull-wing leads. Pin 1 is marked by a dot or beveled corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable: must be held low during instruction transmission and data transfer; high state places DO in high-impedance |
| SK | Serial Clock | Input-only synchronous edge-triggered clock; rising edge latches DI, falling edge samples DO |
| DI | Data Input | Serial instruction/address/data input; driven by host MCU; requires setup/hold timing per AC specs |
| DO | Data Output | Open-drain output with internal pull-up; reports data during READ or Ready/Busy status post-write |
| GND | Ground Reference | Primary return path for VCC and signal currents; must be low-impedance and decoupled near device |
| VCC | Power Supply | Single 2.7–5.5V supply; bypass capacitor (0.1 µF ceramic) required between VCC and GND |
| ORG | Organization Select | Logic-high = 128 × 16 mode; logic-low = 256 × 8 mode; floating defaults to x16 on 2.7V parts |
| DC | No Connect | Internally unused terminal; must remain unconnected and not tied to any net |
Key Features
| Feature | Design Value |
|---|---|
| User-selectable memory organization | Hardware-configurable 256 × 8 or 128 × 16 layout via ORG pin - eliminates firmware rework when memory width requirements change |
| Self-timed write cycle | Fixed 10 ms max duration with no external timing components - simplifies host software and guarantees completion before next command |
| Write-enable security | EWEN/EWDS instruction pair prevents accidental writes - critical for field-upgradable systems where corruption must be avoided |
| Automotive-grade qualification | Industrial temperature range (−40°C to +85°C) and lead-free/halogen-free construction - meets AEC-Q200 stress test requirements for passive components |
| Low standby current | 6 µA typical at 2.7V - extends battery life in always-on sensor nodes and portable diagnostic tools |
Applications
| Industrial PLC Configuration Storage | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Storing I/O mapping tables, calibration offsets, and firmware version identifiers in programmable logic controllers deployed in factory environments. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed during power-up and runtime parameter updates via microcontroller GPIO bit-banging. Use Value: Enables field-reprogrammable logic without requiring flash rewrites or external programming hardware - reduces maintenance downtime and service costs. | Use Scenario: Retaining seat position presets, mirror angle settings, and lighting profiles across ignition cycles in vehicle body control units. IC Role / Device Role / Timing Role: Dedicated EEPROM for user preference storage, isolated from main MCU flash to prevent corruption during over-the-air updates. Use Value: Guarantees 100-year data retention and 1M write cycles - supports lifetime vehicle ownership without degradation of personalized settings. |
| Medical Infusion Pump Calibration | Smart Energy Meter Firmware Parameters |
Use Scenario: Holding flow-rate calibration coefficients, sensor zero-point adjustments, and safety limit thresholds in Class II medical infusion devices. IC Role / Device Role / Timing Role: Safety-critical nonvolatile memory accessed only during maintenance mode; write-protected via EWDS after initial calibration. Use Value: Meets IEC 62304 traceability requirements through deterministic 10 ms write timing and hardware-level write disable - avoids software race conditions. | Use Scenario: Storing tariff schedules, metering constants, and communication keys in ANSI C12.22-compliant smart electricity meters operating in utility substations. IC Role / Device Role / Timing Role: Tamper-resistant configuration store interfaced via isolated SPI bus; powered from backup supercapacitor during mains failure. Use Value: Industrial temperature rating and 2.7V operation ensure reliable reads/writes during brownout conditions - maintains billing integrity during grid instability. |
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-kbit SPI interface (4-wire), 2.5–5.5V, 20 MHz clock, WIP flag instead of DO Ready/Busy | Requires SPI peripheral support; lacks ORG-pin organization flexibility; higher speed but more pins | Select when system already uses SPI hardware and needs larger capacity or faster throughput |
| AT25020B-SSHL-T | 2-kbit SPI interface, 1.8–5.5V, 20 MHz, built-in write protection registers, no ORG pin | Supports 1.8V operation; offers software-controlled write protection; fixed 256 × 8 organization | Choose for ultra-low-voltage designs or when firmware-based protection suffices over hardware ORG selection |
Compared with M95256-WMN6TP and AT25020B-SSHL-T, the AT93C56-10TI-2.7 provides unique ORG-pin configurability and true three-wire simplicity at the cost of lower max clock rate - optimal for resource-constrained MCUs lacking dedicated SPI or needing flexible word-width layouts.
Availability
AT93C56-10TI-2.7 is available at Aetrix Electronics and suitable for industrial PLCs, automotive BCMs, medical infusion pumps, and smart energy meters requiring stable component supply, long-lifecycle assurance, and RoHS-compliant packaging.
Supply support for AT93C56-10TI-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 a focus on embedded control and connectivity.
The AT93C56-10TI-2.7 belongs to Microchip's legacy serial EEPROM product line, designed specifically for cost-sensitive, space-constrained applications requiring robust nonvolatile storage with minimal interface overhead and industrial reliability.
FAQ
What is the maximum clock frequency supported by AT93C56-10TI-2.7?
The AT93C56-10TI-2.7 supports up to 2 MHz at VCC = 5.0V, 1 MHz at VCC = 2.7V, and 0.25 MHz at VCC = 1.8V. These values are specified in Table 4 of the datasheet and reflect guaranteed AC timing margins across temperature and voltage. The AT93C56-10TI-2.7 does not operate above 2 MHz even at 5V - exceeding this may cause read/write failures or data corruption.
How does the ORG pin affect memory organization in AT93C56-10TI-2.7?
When ORG is tied to VCC, the AT93C56-10TI-2.7 configures as 128 words × 16 bits; when grounded, it configures as 256 words × 8 bits. Floating ORG defaults to x16 on 2.7V versions due to internal 1 MΩ pull-up. This hardware-selectable layout allows one PCB design to support two distinct firmware data structures without changing the AT93C56-10TI-2.7 part number.
Is AT93C56-10TI-2.7 pin-compatible with AT93C56A series devices?
No, AT93C56-10TI-2.7 is not pin-compatible with AT93C56A devices. The AT93C56A uses a different pinout (e.g., DC pin relocated), revised timing, and enhanced ESD protection. Migration requires PCB layout changes and firmware validation. The datasheet explicitly states "This device is not recommended for new designs. Please refer to AT93C56A."
What is the write endurance and data retention specification for AT93C56-10TI-2.7?
The AT93C56-10TI-2.7 guarantees 1 million write/erase cycles and 100 years of data retention at 25°C. These figures are characterized per JEDEC standards and apply across the full −40°C to +85°C operating range. Retention degrades logarithmically with temperature - at 85°C, expected retention is >10 years, still sufficient for most industrial lifecycles.
Does AT93C56-10TI-2.7 require an external pull-up resistor on the DO pin?
Yes, AT93C56-10TI-2.7 has an open-drain DO output and requires an external pull-up resistor (typically 4.7 kΩ to VCC) to ensure valid logic-high levels during READ operations and Ready/Busy status reporting. Without it, DO remains indeterminate when not actively driving low, causing communication errors or false busy signals.
AT93C56-10TI-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
AT93C56-10TI-2.7 FAQ
1.How can I place an order for AT93C56-10TI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C56-10TI-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 AT93C56-10TI-2.7 reliable?
The price and inventory of AT93C56-10TI-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 AT93C56-10TI-2.7 is usually 5 days.
3.What payment methods are accepted for AT93C56-10TI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C56-10TI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C56-10TI-2.7?
AT93C56-10TI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C56-10TI-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 AT93C56-10TI-2.7?
For technical support, including AT93C56-10TI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C56-10TI-2.7 requirements.
6.How does Aetrix verify that AT93C56-10TI-2.7 is sourced from the original manufacturer or authorized distributors?
All AT93C56-10TI-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 AT93C56-10TI-2.7 meets industry standards.
7.What is the process for return or replacement of AT93C56-10TI-2.7?
All AT93C56-10TI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C56-10TI-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 AT93C56-10TI-2.7 part is unused and in its original packaging.
Return procedure for AT93C56-10TI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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