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Microchip Technology AT93C86A-10SI-1.8
- Part No.:
- AT93C86A-10SI-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT93C86A-10SI-1.8.pdf
- Description:
- IC EEPROM 16KBIT 3-WIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,751
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Product details
Overview
AT93C86A-10SI-1.8 from Microchip Technology (formerly Atmel) is a 16-kbit serial EEPROM with 3-wire interface, user-selectable 2048×8 or 1024×16 organization via ORG pin, 1.8V to 5.5V supply operation, and automotive-grade industrial temperature range (−40°C to +85°C). It delivers self-timed write cycles (≤10 ms), 1 million write endurance, and 100-year data retention in an 8-lead JEDEC SOIC package.
For engineers reviewing the AT93C86A-10SI-1.8 datasheet, AT93C86A-10SI-1.8 pinout, AT93C86A-10SI-1.8 application, or AT93C86A-10SI-1.8 equivalent, key selection criteria include low-voltage compatibility (1.8V min), Schmitt-trigger noise-immune inputs, sequential read capability, and support for ERAL/WRAL bulk operations at 5V only.
Technical Context
The AT93C86A-10SI-1.8 implements a synchronous 3-wire serial interface with dedicated CS, SK, DI, and DO lines, enabling host-controlled READ, WRITE, ERASE, EWEN, EWDS, ERAL, and WRAL instructions. Its internal address decoder supports dual memory mapping based on ORG pin state - grounded for x8 mode (2048 words), tied to VCC for x16 mode (1024 words).
Operation requires explicit Erase/Write Enable (EWEN) before programming; subsequent EWDS disables all write functions. READY/BUSY status is reported on DO when CS is asserted post-instruction, with timing parameters (e.g., tWP = 10 ms max, tSKH/tSKL ≥ 250 ns at 1.8V) strictly defined across voltage and temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 kbit (2048 × 8 or 1024 × 16 configurable) |
| Supply Voltage | 1.8V to 5.5V - enables direct interfacing with 1.8V logic and mixed-voltage systems |
| Interface | 3-wire serial (CS/SK/DI/DO) - minimal GPIO usage, no address bus required |
| Write Cycle Time | ≤10 ms - self-timed; no external delay or polling needed beyond status check |
| Endurance | 1 million write cycles - suitable for firmware parameter storage with frequent updates |
| Data Retention | 100 years at 25°C - ensures long-term reliability in unpowered storage |
| Operating Temp | −40°C to +85°C - qualified for industrial and automotive control unit environments |
Pinout & Package
AT93C86A-10SI-1.8 is housed in an 8-lead JEDEC SOIC (8S1) package, 0.150" wide, with gull-wing leads and standard footprint compatible with automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; must be held low during instruction execution and status polling |
| SK | Serial Clock | Synchronizes all data transfers; rising edge clocks data into DI and out of DO |
| DI | Data Input | Receives instruction opcodes, addresses, and write data; includes Schmitt trigger for noise immunity |
| DO | Data Output | Serially outputs read data or READY/BUSY status; high-impedance when CS is high |
| VCC | Power Supply | 1.8V–5.5V input; powers internal logic and memory array |
| GND | Ground | Reference return path for all signals and power |
| ORG | Organization Select | Connect to GND for 2048×8 mode; connect to VCC for 1024×16 mode; not functional in 1.8V-only variants |
| DC | Don't Connect | No internal connection; must remain floating or tied to GND/VCC per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| User-selectable memory organization | Hardware-configurable x8/x16 word width via ORG pin - eliminates software remapping overhead |
| Schmitt-trigger, filtered inputs | Immunity to slow-rising/falling or noisy clock/data signals - reduces need for external RC filtering |
| Sequential read operation | Auto-incrementing address pointer enables continuous multi-byte reads without reissuing addresses |
| Bulk erase/write commands | ERAL and WRAL instructions allow full-array erase or program in single command - accelerates factory initialization |
| READY/BUSY status reporting | DO pin returns logic level indicating write completion - enables efficient polling without fixed delays |
Applications
| Industrial PLC Configuration Storage | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Storing calibration tables, sensor offsets, and operational thresholds in programmable logic controllers deployed in factory automation. IC Role / Device Role / Timing Role: Nonvolatile parameter storage with infrequent writes and frequent reads; accessed via microcontroller SPI-compatible GPIO bit-banging. Use Value: 1.8V operation allows direct integration with low-power MCU I/O domains; 100-year retention ensures data integrity over equipment lifetime without battery backup. | Use Scenario: Holding door lock settings, mirror position presets, and lighting profiles in automotive BCMs operating across extended temperature ranges. IC Role / Device Role / Timing Role: Serial EEPROM providing secure, field-updatable configuration storage; accessed during boot and runtime by 8-bit/16-bit automotive MCUs. Use Value: −40°C to +85°C qualification and 1M endurance support repeated dealership reprogramming and end-user customization cycles. |
| Medical Device Calibration Data | Smart Energy Meter Firmware Parameters |
Use Scenario: Retaining sensor calibration coefficients and device-specific compensation values in portable diagnostic instruments. IC Role / Device Role / Timing Role: Tamper-resistant nonvolatile memory storing safety-critical calibration data; write-protected via EWDS after initial setup. Use Value: Schmitt-trigger inputs prevent spurious writes from EMI in clinical environments; 100-year retention meets regulatory requirements for long-term traceability. | Use Scenario: Storing tariff schedules, metering constants, and communication credentials in utility-grade smart meters with 15+ year field life. IC Role / Device Role / Timing Role: Low-power serial EEPROM used during meter initialization and firmware updates; accessed via isolated UART-to-SPI bridge. Use Value: 1.8V minimum supply enables operation from energy-harvesting power rails; 1M write cycles accommodate decades of time-of-use billing adjustments. |
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), 2.5–5.5V supply, no ORG pin or x8/x16 configuration | Higher density but fixed 128×8 organization; lacks sequential read and bulk commands (ERAL/WRAL) | Select when >16 kbit storage is required and SPI-native interface preferred over 3-wire simplicity |
| 25AA160C-I/SN | 16 kbit SPI EEPROM, 1.8–5.5V, 1 MHz max clock, no ORG pin, no ERAL/WRAL support | Same density and voltage range, but SPI protocol adds CS/SCK/MOSI/MISO vs. AT93C86A's CS/SK/DI/DO; no hardware organization select | Choose for designs already using SPI peripherals; avoid if minimizing pin count or requiring x16 mode flexibility |
Compared with M95128-WMN6TP and 25AA160C-I/SN, the AT93C86A-10SI-1.8 uniquely offers hardware-selectable memory organization, sequential read, and bulk erase/write commands - making it optimal for resource-constrained systems needing flexible, low-pin-count nonvolatile storage with deterministic timing.
Availability
AT93C86A-10SI-1.8 is available at Aetrix Electronics and suitable for industrial PLCs, automotive body control modules, medical calibration systems, and smart energy meters requiring stable component supply, long-life data retention, and low-voltage interoperability.
Supply support for AT93C86A-10SI-1.8 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 AT93C86A-10SI-1.8 belongs to Microchip's legacy Atmel serial EEPROM product line, designed specifically for cost-sensitive, low-power industrial and automotive applications requiring robust nonvolatile storage with minimal interface complexity.
FAQ
What is the minimum supply voltage supported by the AT93C86A-10SI-1.8?
The AT93C86A-10SI-1.8 operates down to 1.8V, as indicated by the "−1.8" suffix in its ordering code. This enables direct interfacing with 1.8V I/O domains without level shifting, and is validated across the full industrial temperature range (−40°C to +85°C). The device maintains full functionality-including READ, WRITE, and status reporting-at this minimum voltage.
Does the AT93C86A-10SI-1.8 support both x8 and x16 memory organization modes?
No-the AT93C86A-10SI-1.8 is a 1.8V-optimized variant and does not support ORG pin-based organization selection. Per the datasheet note, "This feature is not available on the 1.8V devices." It is factory-configured for 2048 × 8 organization only. For x16 mode, the −2.7V version (e.g., AT93C86A-10SI-2.7) must be used.
How is write protection implemented on the AT93C86A-10SI-1.8?
Write protection on the AT93C86A-10SI-1.8 is controlled by the Erase/Write Enable (EWEN) and Erase/Write Disable (EWDS) instructions. The device powers up in EWDS state-no programming is possible until EWEN is issued. After programming, executing EWDS restores protection. This software-based scheme replaces permanent write-protect pins and allows dynamic enable/disable during system operation.
What package type is used for the AT93C86A-10SI-1.8?
The AT93C86A-10SI-1.8 uses an 8-lead JEDEC SOIC package (8S1), measuring 5.0 mm × 4.0 mm with 1.27 mm lead pitch. It is RoHS-compliant, halogen-free, and optimized for surface-mount reflow assembly. Pin 1 is marked by a notch or bevel on the package body, matching standard SOIC footprint layouts.
Can the AT93C86A-10SI-1.8 perform bulk erase or write operations?
Yes-the AT93C86A-10SI-1.8 supports ERAL (Erase All) and WRAL (Write All) instructions, but only when VCC is between 4.5V and 5.5V. These commands erase or program the entire 16 kbit array in a single operation. They are not available at 1.8V or 2.7V supply levels, and require the device to be in EWEN state prior to execution.
AT93C86A-10SI-1.8 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:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT93C86A-10SI-1.8 FAQ
1.How can I place an order for AT93C86A-10SI-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C86A-10SI-1.8 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-1.8 reliable?
The price and inventory of AT93C86A-10SI-1.8 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-1.8 is usually 5 days.
3.What payment methods are accepted for AT93C86A-10SI-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C86A-10SI-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C86A-10SI-1.8?
AT93C86A-10SI-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C86A-10SI-1.8 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-1.8?
For technical support, including AT93C86A-10SI-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C86A-10SI-1.8 requirements.
6.How does Aetrix verify that AT93C86A-10SI-1.8 is sourced from the original manufacturer or authorized distributors?
All AT93C86A-10SI-1.8 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-1.8 meets industry standards.
7.What is the process for return or replacement of AT93C86A-10SI-1.8?
All AT93C86A-10SI-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C86A-10SI-1.8, 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-1.8 part is unused and in its original packaging.
Return procedure for AT93C86A-10SI-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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