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Microchip Technology 93C86BT-I/OT
- Part No.:
- 93C86BT-I/OT
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- SOT-23-6
- Datasheet:
-
93C86BT-I/OT.pdf
- Description:
- IC EEPROM 16KBIT MICROWIRE SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:4,278
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Product details
Overview
93C86BT-I/OT from Microchip Technology Inc. is a 16 Kbit Microwire-compatible serial EEPROM with 8-bit organization, 4.5–5.5 V supply range, and industrial temperature grade (–40°C to +85°C). It features self-timed erase/write cycles, automatic ERAL before WRAL, power-on/off data protection, and Ready/Busy status signaling via DO pin - deployed in embedded control systems for parameter storage and calibration retention.
For engineers reviewing the 93C86BT-I/OT datasheet, 93C86BT-I/OT pinout, 93C86BT-I/OT application, or 93C86BT-I/OT equivalent, key selection criteria include VCC operating range (4.5–5.5 V), 8-bit fixed word size, SOT-23-6 package footprint, 1 M endurance cycles, and compatibility with legacy Microwire host controllers requiring CS/CLK/DI/DO timing compliance.
Technical Context
This device implements a synchronous 3-wire Microwire interface with dedicated CS, CLK, DI, and DO pins. It operates exclusively in x8 mode (no ORG pin), lacks PE and ORG terminals, and requires no external logic for memory configuration. All instructions - READ, WRITE, ERASE, ERAL, WRAL, EWEN, EWDS - are initiated by a Start bit followed by opcode and address/data on rising CLK edges.
Internal power-on reset and voltage detect circuitry (VPOR = 3.8 V) inhibit all operations below VCC threshold. Write cycles are self-timed (TWC = 2 ms), with DO pin serving dual role: serial data output during READ and Ready/Busy status indicator during programming - cleared only after CS low pulse ≥250 ns post-operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 16 Kbit (2048 × 8-bit organization) |
| VCC operating range | 4.5 V to 5.5 V - ensures compatibility with 5 V logic systems and rejects brownout-induced corruption |
| Endurance | 1,000,000 erase/write cycles - supports long-term field calibration updates in industrial controllers |
| Data retention | 200 years at 85°C - guarantees firmware parameter integrity over product lifetime without refresh |
| Write cycle time | 2 ms max - enables deterministic timing budgeting for host MCU interrupt service routines |
| Max clock frequency | 3 MHz at VCC ≥4.5 V - allows high-throughput configuration loading without external clock dividers |
| Interface standard | Microwire-compatible 3-wire serial - interoperates with legacy PIC® MCU peripherals and FPGA soft controllers |
Pinout & Package
93C86BT-I/OT uses the 6-lead SOT-23 package (package code OT), with pin 1 marked by laser dot. Pin functions are fully defined in Microchip DS21797L, and no ORG or PE pins are present - confirming fixed 8-bit operation and always-enabled programming.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (DO) | Data Output / Ready-Busy Status | Tri-state output delivering read data or active-low busy signal; must be sampled after CS high pulse ≥250 ns |
| 2 (VSS) | Ground Reference | Primary return path for all internal logic and I/O; requires low-inductance connection to system GND plane |
| 3 (DI) | Data Input | Accepts Start bit, opcodes, addresses, and write data on rising CLK edge; not bidirectional |
| 4 (CLK) | Serial Clock Input | Synchronizes all data transfers; supports stop/start mid-sequence; no clock required during 2 ms self-timed write |
| 5 (CS) | Chip Select Input | Active-high enable; device enters Standby when low, but completes ongoing write before sleep |
| 6 (VCC) | Power Supply | 4.5–5.5 V input with internal voltage detect (3.8 V threshold); decoupling capacitor mandatory per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Self-timed erase/write | Eliminates need for host-controlled timing delays - simplifies firmware and reduces CPU overhead |
| Automatic ERAL before WRAL | Guarantees full-array readiness prior to bulk write - prevents partial-write corruption in power-loss scenarios |
| Power-on/off data protection | Hardware-enforced lockout below 3.8 V VCC - prevents inadvertent writes during power ramp-up/down |
| Ready/Busy status on DO | Enables polling-based host synchronization without dedicated status lines or interrupts |
| Sequential read mode | Allows continuous address increment with single CS assertion - accelerates block reads of calibration tables |
Applications
| Industrial Sensor Calibration Storage | Automotive Body Control Module NVM |
|---|---|
Use Scenario: Storing factory-trimmed offset/gain coefficients for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile parameter register accessed infrequently during commissioning or recalibration; supports Microwire host with 3 MHz clock. Use Value: 200-year data retention ensures calibration remains valid across 15+ year equipment lifetimes without battery backup. | Use Scenario: Holding seat position memory, mirror presets, and lighting configuration in automotive BCMs. IC Role / Device Role / Timing Role: Dedicated 8-bit serial EEPROM interfaced to 8-bit MCU via GPIO-banged Microwire; operates across –40°C to +85°C. Use Value: 1 M endurance enables daily user adjustments over 10+ years without wear-out risk. |
| Medical Device Configuration Backup | Smart Energy Meter Firmware Parameters |
Use Scenario: Retaining user-defined alarm thresholds and operational modes in portable diagnostic instruments. IC Role / Device Role / Timing Role: Low-power serial NVM powered from main 5 V rail; accessed only during setup or firmware update. Use Value: Power-on protection prevents corruption during battery swap or cold start - critical for regulatory compliance. | Use Scenario: Storing tariff schedules, meter ID, and communication settings in ANSI C12.19-compliant smart meters. IC Role / Device Role / Timing Role: Microwire EEPROM integrated into meter SoC subsystem; withstands repeated firmware field upgrades. Use Value: 2 ms write time enables fast parameter commits during OTA updates without blocking real-time metrology functions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 93LC86BT-I/OT | Wider VCC range (2.5–5.5 V); same 8-bit organization, SOT-23-6 package, and pinout | Supports 2.5 V microcontrollers and mixed-voltage systems where 5 V rail is unavailable | Select when operating below 4.5 V or requiring broader supply tolerance |
| AT25020B-MAHL-T | SPI interface (4-wire), 2 K × 8-bit, 1.8–5.5 V, SOIC-8 package - no pin or protocol compatibility | Requires SPI host peripheral and PCB layout change; offers faster 20 MHz clock and write protect pin | Choose only if migrating to SPI architecture and redesigning interface hardware |
Compared with 93LC86BT-I/OT, the 93C86BT-I/OT trades supply flexibility for guaranteed 5 V robustness and legacy Microwire support; versus AT25020B-MAHL-T, it retains direct drop-in compatibility with existing Microwire firmware but lacks SPI speed and hardware write protection.
Availability
93C86BT-I/OT is available at Aetrix Electronics and suitable for industrial sensor calibration storage, automotive body control modules, medical device configuration backup, and smart energy meter firmware parameters requiring stable component supply and long-lifecycle assurance.
Supply support for 93C86BT-I/OT 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 leading provider of microcontroller, analog, and Flash-IP solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 93Cxx series targets cost-sensitive, low-power embedded systems needing reliable serial NVM - optimized for Microwire host compatibility, industrial temperature operation, and minimal external component count.
FAQ
What is the memory organization of the 93C86BT-I/OT?
The 93C86BT-I/OT has a fixed 2048 × 8-bit (16 Kbit) organization. Unlike 'C' variants, it lacks an ORG pin and is not configurable for 16-bit mode - it operates exclusively in x8 mode as confirmed in the Device Selection Table and Pin Function Table of DS21797L.
Does the 93C86BT-I/OT support hardware write protection?
No, the 93C86BT-I/OT does not include a Program Enable (PE) pin or hardware write protection. As a 'B'-type variant in the 93Cxx family, it relies solely on EWEN/EWDS software commands for write enable/disable - verified in the Device Selection Table and Section 3.6 of DS21797L.
What is the maximum clock frequency supported by the 93C86BT-I/OT?
The 93C86BT-I/OT supports up to 3 MHz clock frequency when VCC is 4.5 V or higher, as specified in Table 1-2 (A1 parameter) of DS21797L. At lower VCC levels, maximum frequency decreases - but the 93C86BT-I/OT's 4.5–5.5 V range ensures consistent 3 MHz operation.
Is the 93C86BT-I/OT compatible with SPI interfaces?
No, the 93C86BT-I/OT implements a Microwire-compatible 3-wire interface (CS/CLK/DI/DO), not SPI. It lacks the SI/SO/MOSI/MISO separation and mode configuration of SPI - confirmed by functional description, instruction set, and timing diagrams in DS21797L.
What package type is used for the 93C86BT-I/OT?
The 93C86BT-I/OT uses the 6-lead SOT-23 package (package code OT), as explicitly listed in the Device Selection Table and Package Types diagram on DS21797L-page 2. Pin 1 is identified by a laser mark, and the exposed pad is not present - distinguishing it from DFN/TDFN variants.
93C86BT-I/OT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 16Kbit
- Memory Organization:
- 1K x 16
- Memory Interface:
- Microwire
- Clock Frequency:
- 3 MHz
- Write Cycle Time - Word, Page:
- 2ms
- Access Time:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
93C86BT-I/OT FAQ
1.How can I place an order for 93C86BT-I/OT through Aetrix?
Please submit a Request for Quotation (RFQ) for 93C86BT-I/OT 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 93C86BT-I/OT reliable?
The price and inventory of 93C86BT-I/OT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 93C86BT-I/OT is usually 5 days.
3.What payment methods are accepted for 93C86BT-I/OT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 93C86BT-I/OT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 93C86BT-I/OT?
93C86BT-I/OT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 93C86BT-I/OT 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 93C86BT-I/OT?
For technical support, including 93C86BT-I/OT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 93C86BT-I/OT requirements.
6.How does Aetrix verify that 93C86BT-I/OT is sourced from the original manufacturer or authorized distributors?
All 93C86BT-I/OT 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 93C86BT-I/OT meets industry standards.
7.What is the process for return or replacement of 93C86BT-I/OT?
All 93C86BT-I/OT units undergo pre-shipment inspection (PSI). If there is an issue with 93C86BT-I/OT, 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 93C86BT-I/OT part is unused and in its original packaging.
Return procedure for 93C86BT-I/OT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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