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Microchip Technology AT93C86A-10SI-2.7
- Part No.:
- AT93C86A-10SI-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT93C86A-10SI-2.7.pdf
- Description:
- IC EEPROM 16KBIT 3-WIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,006
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Product details
Overview
AT93C86A-10SI-2.7 from Microchip Technology (formerly Atmel) is a 16-kbit serial EEPROM with user-selectable 2048 × 8 or 1024 × 16 organization, 3-wire SPI-compatible interface, and 2.7V–5.5V supply operation. It delivers 1 million write cycles, 100-year data retention, and Schmitt-triggered noise-immune inputs for industrial control and automotive subsystems requiring nonvolatile configuration storage.
For engineers reviewing the AT93C86A-10SI-2.7 datasheet, AT93C86A-10SI-2.7 pinout, AT93C86A-10SI-2.7 application, or AT93C86A-10SI-2.7 equivalent, key selection factors include voltage range compatibility (2.7–5.5 V), dual organization flexibility via ORG pin, self-timed 10 ms write cycle, TSSOP-8 packaging, and extended temperature support (−40°C to +85°C).
Technical Context
The AT93C86A-10SI-2.7 implements a synchronous 3-wire serial interface (CS, SK, DI/DO) with instruction-set-driven operation including READ, WRITE, ERASE, EWEN, EWDS, ERAL, and WRAL. Its internal address decoder supports automatic sequential read and dual memory mapping selected by the ORG pin state.
It features on-chip clock generation, READY/BUSY status reporting via DO during write/erase, and noise-suppressed inputs using Schmitt triggers and filtering. The device operates across −40°C to +85°C with no external components required for basic functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 kbit (2048 × 8 or 1024 × 16, selectable via ORG pin) |
| Supply Voltage Range | 2.7 V to 5.5 V - enables direct integration into 3.3 V and 5 V systems without level-shifting |
| Write Endurance | 1 million cycles - supports frequent firmware parameter updates in field-deployed equipment |
| Data Retention | 100 years at 25°C - ensures long-term reliability for unattended infrastructure applications |
| Max Clock Frequency | 2 MHz at 5 V - provides fast serial access compatible with standard microcontroller SPI peripherals |
| Write Cycle Time | 10 ms maximum - defines worst-case latency for nonvolatile store operations |
| Operating Temperature | −40°C to +85°C - qualified for industrial and automotive under-hood environments |
| Package | 8-lead TSSOP (8A2) - surface-mount footprint with 0.65 mm pitch, 4.4 mm body width |
Pinout & Package
AT93C86A-10SI-2.7 is housed in an 8-lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153 compliant, with 0.65 mm lead pitch and 4.4 mm × 3.0 mm body dimensions. Pin 1 is marked by a beveled corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; must be held low for instruction initiation and sustained during serial transfer |
| SK | Serial Clock | Synchronous edge-triggered clock input; rising edge samples DI, falling edge outputs DO |
| DI | Data Input | Serial instruction and address/data input path; accepts start bit, op code, address, and write data |
| DO | Data Output | Tri-state serial output; delivers read data, READY/BUSY status, or high-impedance when CS is high |
| VCC | Power Supply | Primary supply rail (2.7–5.5 V); powers internal logic, memory array, and I/O buffers |
| GND | Ground | Reference return path for all internal circuits and I/O signals |
| ORG | Organization Select | Logic-level-controlled memory mapping: VCC = 1024 × 16, GND = 2048 × 8; unconnected defaults to x16 |
| DC | Don't Connect | No internal connection; must remain floating or tied to GND/VCC per layout guidelines to avoid noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| User-selectable memory organization | Hardware-configurable 2048 × 8 or 1024 × 16 layout via ORG pin - eliminates need for software remapping or external logic |
| Self-timed write cycle | 10 ms max duration with no external timing control - simplifies host firmware and guarantees completion before next command |
| Schmitt-triggered, filtered inputs | Immunity to slow-rising/falling edges and EMI-induced glitches - improves robustness in noisy industrial bus environments |
| Erase/write enable/disable protocol | EWEN/EWDS instructions prevent accidental writes - critical for safety-critical and certified system configurations |
| Extended temperature grade | −40°C to +85°C operation - meets industrial control and automotive ECUs requirements without derating |
| Lead-free/halogen-free construction | RoHS-compliant materials and finish - satisfies global environmental compliance mandates for end-product certification |
Applications
| Industrial PLC Configuration Storage | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Storing calibrated sensor offsets, I/O mapping tables, and runtime configuration parameters in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register bank accessed via microcontroller SPI during power-up and field update cycles. Use Value: Enables field-reprogrammable hardware behavior without PCB redesign; 1M endurance supports >10 years of daily calibration updates. |
Use Scenario: Retaining door lock settings, mirror position memory, and lighting profiles in vehicle body electronics modules. IC Role / Device Role / Timing Role: Persistent parameter store interfaced to 8-bit/16-bit automotive MCUs operating at 3.3 V or 5 V. Use Value: Maintains user preferences across battery disconnects; 100-year retention ensures lifetime data integrity without backup capacitors. |
| Medical Device Calibration Data | Smart Energy Meter Firmware Parameters |
Use Scenario: Holding factory-calibrated ADC gain/offset coefficients and safety-critical operational limits in portable diagnostic instruments. IC Role / Device Role / Timing Role: Secure, tamper-resistant configuration vault accessed only during boot or service mode. Use Value: Prevents unauthorized parameter modification; EWEN/EWDS protocol enforces write-protection after calibration. |
Use Scenario: Storing tariff schedules, metering constants, and communication credentials in ANSI C12.19-compliant utility meters. IC Role / Device Role / Timing Role: Tamper-evident nonvolatile memory supporting secure firmware updates and regulatory audit logging. Use Value: Meets ANSI/IEEE data retention and write-cycle durability requirements for 20+ year field deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95128-WMN6TP | 128 kbit capacity, SPI interface (4-wire), 1.8–5.5 V, 5 ms write time | Higher density and faster write; requires CS, SK, SI, SO pins instead of shared DI/DO | Select when >16 kbit storage or SPI-native interface is required; not pin-compatible |
| 25AA160C-I/MS | 16 kbit, SPI interface (4-wire), 1.8–5.5 V, 5 ms write time, SOIC-8 package | Same density but 4-wire SPI; lacks ORG pin flexibility and Schmitt-trigger inputs | Choose for legacy SPI designs where pin count permits separate I/O lines and noise immunity is less critical |
Compared with M95128-WMN6TP and 25AA160C-I/MS, the AT93C86A-10SI-2.7 offers unique 3-wire simplicity, hardware-selectable organization, and superior noise immunity - making it optimal for space-constrained, electrically noisy industrial nodes where pin count and robustness outweigh raw speed or density needs.
Availability
AT93C86A-10SI-2.7 is available at Aetrix Electronics and suitable for industrial automation, automotive subsystems, and medical instrumentation requiring stable component supply, long-lifecycle assurance, and RoHS-compliant sourcing.
Supply support for AT93C86A-10SI-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 Inc. is a global provider of microcontrollers, analog devices, and memory solutions, with expertise in embedded control and nonvolatile storage technologies.
The AT93C86A-10SI-2.7 belongs to Microchip's legacy Atmel serial EEPROM product line, designed specifically for cost-sensitive, low-power industrial and automotive applications demanding reliable, pin-efficient configuration storage.
FAQ
What is the function of the ORG pin on the AT93C86A-10SI-2.7?
The ORG pin on the AT93C86A-10SI-2.7 selects internal memory organization: tied to VCC enables 1024 × 16 mode, tied to GND enables 2048 × 8 mode. When left unconnected, the internal 1 MΩ pull-up defaults to x16 mode. This hardware-selectable configuration eliminates firmware overhead and supports flexible system design without changing the AT93C86A-10SI-2.7 part number.
Does the AT93C86A-10SI-2.7 support true SPI communication?
The AT93C86A-10SI-2.7 uses a 3-wire serial interface (CS, SK, DI/DO) that is functionally compatible with SPI master peripherals but is not a full SPI device - it shares DI and DO on a single bidirectional pin and lacks dedicated SO/SI lines. Host firmware must manage direction control and timing per the AT93C86A-10SI-2.7 instruction set, not standard SPI mode settings.
What is the maximum clock frequency supported by the AT93C86A-10SI-2.7 at 3.3 V?
At 3.3 V, the AT93C86A-10SI-2.7 supports a maximum SK clock frequency of 1 MHz, as specified in the AC Characteristics table for 2.7 V ≤ VCC ≤ 5.5 V operation. This ensures reliable timing margin for microcontrollers running at common 3.3 V logic levels without requiring additional clock dividers or delay insertion in the AT93C86A-10SI-2.7 interface.
How does the AT93C86A-10SI-2.7 indicate write completion status?
The AT93C86A-10SI-2.7 reports READY/BUSY status on the DO pin: when CS is brought high after initiating a write cycle and held low for ≥250 ns (tCS), a logic "1" on DO indicates completion and readiness for the next instruction, while a logic "0" means programming is still in progress. This eliminates polling delays and allows deterministic host timing for the AT93C86A-10SI-2.7.
Is the AT93C86A-10SI-2.7 pin-compatible with other members of the AT93Cxx family?
Yes - the AT93C86A-10SI-2.7 shares identical pinout and package (8-lead TSSOP) with AT93C46A-10SI-2.7, AT93C56A-10SI-2.7, and AT93C66A-10SI-2.7. All use the same CS/SK/DI/DO/ORG/VCC/GND/DC arrangement, enabling drop-in replacement within the same density tier when board layout accommodates the AT93C86A-10SI-2.7's 16 kbit capacity.
AT93C86A-10SI-2.7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 16Kbit
- Memory Organization:
- 2K x 8, 1K 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
AT93C86A-10SI-2.7 FAQ
1.How can I place an order for AT93C86A-10SI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C86A-10SI-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 AT93C86A-10SI-2.7 reliable?
The price and inventory of AT93C86A-10SI-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 AT93C86A-10SI-2.7 is usually 5 days.
3.What payment methods are accepted for AT93C86A-10SI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C86A-10SI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C86A-10SI-2.7?
AT93C86A-10SI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C86A-10SI-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 AT93C86A-10SI-2.7?
For technical support, including AT93C86A-10SI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C86A-10SI-2.7 requirements.
6.How does Aetrix verify that AT93C86A-10SI-2.7 is sourced from the original manufacturer or authorized distributors?
All AT93C86A-10SI-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 AT93C86A-10SI-2.7 meets industry standards.
7.What is the process for return or replacement of AT93C86A-10SI-2.7?
All AT93C86A-10SI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C86A-10SI-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 AT93C86A-10SI-2.7 part is unused and in its original packaging.
Return procedure for AT93C86A-10SI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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