My Inquiry
My Account
Microchip Technology 93C86BT-E/OT
- Part No.:
- 93C86BT-E/OT
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- SOT-23-6
- Datasheet:
-
93C86BT-E/OT.pdf
- Description:
- IC EEPROM 16KBIT MICROWIRE SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:954
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
93C86BT-E/OT from Microchip Technology Inc. is a 16 Kbit (2048 × 8-bit) Microwire-compatible serial EEPROM designed for nonvolatile data storage in embedded control systems. It operates at 4.5–5.5 V, supports industrial and automotive temperature ranges (−40°C to +125°C), features self-timed erase/write cycles, and uses a 3-wire serial interface (CS, CLK, DI/DO) in an SOT-23-6 package. It is commonly used for configuration storage in automotive body controllers.
For engineers reviewing the 93C86BT-E/OT datasheet, 93C86BT-E/OT pinout, 93C86BT-E/OT application, or 93C86BT-E/OT equivalent, key selection criteria include its 4.5–5.5 V supply range, automotive-grade −40°C to +125°C operation, 2048 × 8-bit organization, SOT-23-6 footprint compatibility, and Microwire protocol compliance with Ready/Busy status reporting via DO.
Technical Context
The 93C86BT-E/OT implements a synchronous 3-wire Microwire interface with CS, CLK, and bidirectional DI/DO pins. It executes READ, WRITE, ERASE, ERAL, WRAL, EWEN, and EWDS instructions using opcode-driven command sequences clocked on CLK rising edges. Its internal logic includes address decoding, mode control, and output buffering with automatic High-Z management on DO during standby or non-read states.
Unlike C-variant parts, this A/B-series device lacks ORG and PE pins - memory organization is fixed at 2048 × 8-bit, and write protection is managed solely via EWEN/EWDS commands. Power-on reset circuitry ensures data integrity below 3.8 V, and all programming operations require prior EWEN execution followed by proper CS timing (TCSL ≥ 250 ns).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 16 Kbit (2048 × 8-bit) - fixed x8 organization; no ORG pin required. |
| VCC range | 4.5 V to 5.5 V - compatible with 5 V logic systems; POR threshold at 3.8 V prevents corruption during brown-out. |
| Temp range | −40°C to +125°C - qualified for automotive under-hood applications per E-grade specification. |
| Interface | Microwire 3-wire serial (CS/CLK/DI-DO) - requires no additional level-shifting for 5 V microcontrollers. |
| Write endurance | 1,000,000 erase/write cycles - supports frequent calibration or logging updates over product lifetime. |
| Data retention | 200 years at +85°C - ensures long-term reliability without refresh in sealed automotive modules. |
| Max clock frequency | 3 MHz at VCC ≥ 4.5 V - enables fast configuration reads during boot-up sequences. |
| Write cycle time | 2 ms per byte - deterministic timing simplifies firmware timeout handling during field updates. |
Pinout & Package
Package: SOT-23-6 (6-lead small-outline transistor), Pb-free Matte Tin finish, footprint code OT per Microchip marking standard. Dimensions: 2.9 mm × 1.6 mm × 1.1 mm (max height).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (DO) | Data Output / Ready-Busy Indicator | Outputs read data on CLK rising edge; drives low during active erase/write; high = ready; High-Z when CS low or idle. |
| 2 (VSS) | Ground Reference | Primary return path for all I/O and core logic; must be connected directly to system ground plane. |
| 3 (DI) | Data Input | Accepts Start bit, opcodes, addresses, and write data on CLK rising edge; shares net with DO in single-line configurations (with series resistor). |
| 4 (CLK) | Serial Clock Input | Synchronizes all instruction transfers; rising edge clocks data in/out; can be paused mid-sequence without state loss. |
| 5 (CS) | Chip Select Input | Active-high enable; must remain low ≥250 ns between instructions; forces Standby mode when low but completes ongoing writes. |
| 6 (VCC) | Power Supply | 4.5–5.5 V input; internal voltage detect (VPOR = 3.8 V) blocks operations during power ramp-up/down. |
Key Features
| Feature | Design Value |
|---|---|
| Self-timed erase/write | Eliminates need for external timing control - firmware only waits for DO high or polls status, reducing CPU overhead. |
| Automatic ERAL before WRAL | Ensures full array readiness before bulk write - prevents partial-write corruption without requiring separate erase command. |
| Power-on/off data protection | Hardware-level lockout below 3.8 V - guarantees no spurious writes during power transitions in automotive environments. |
| Ready/Busy status on DO | Enables polling-based firmware flow control - avoids fixed delays and improves system responsiveness during configuration updates. |
| Industry-standard Microwire interface | Direct compatibility with legacy MCU peripherals (e.g., PIC® MSSP, STMicro SPI-Microwire modes) - no custom driver development needed. |
| Pb-free and RoHS compliant | Meets global environmental regulations for automotive and industrial end equipment - supports lead-free reflow assembly. |
Applications
| Automotive Body Control Module | Industrial PLC Configuration Storage |
|---|---|
Use Scenario: Storing door lock settings, mirror position presets, and lighting profiles in a vehicle body controller. IC Role / Device Role / Timing Role: Nonvolatile configuration EEPROM interfaced to an 8-bit automotive MCU via Microwire; accessed during startup and user adjustment events. Use Value: Enables personalized user settings retention across ignition cycles with guaranteed data integrity under wide temperature and vibration conditions. | Use Scenario: Holding I/O mapping tables, calibration coefficients, and communication parameters in a DIN-rail mounted programmable logic controller. IC Role / Device Role / Timing Role: Serial EEPROM providing persistent parameter storage accessible during cold start and firmware update routines. Use Value: Supports field-reprogrammability without hardware change; 1M endurance allows daily recalibration logging over 10+ years. |
| Medical Infusion Pump Calibration | Smart Energy Meter Firmware Patch Storage |
Use Scenario: Retaining flow-rate calibration constants and safety thresholds in battery-powered infusion pumps subject to regulatory audit. IC Role / Device Role / Timing Role: Tamper-resistant data storage element with verified 200-year retention; accessed only during service-mode calibration. Use Value: Meets IEC 62304 traceability requirements; eliminates need for external backup capacitors or supercapacitors. | Use Scenario: Storing signed firmware patch images and version metadata in utility-grade smart meters deployed in outdoor enclosures. IC Role / Device Role / Timing Role: Secure, field-upgradable nonvolatile memory holding encrypted update payloads prior to MCU verification and flash programming. Use Value: Enables remote OTA updates with rollback capability; −40°C to +125°C rating ensures reliability in uncontrolled ambient installations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 93C86B-E/SN | Same 2048 × 8-bit organization and 4.5–5.5 V range, but in SOIC-8 package (SN); no SOT-23 footprint. | Requires PCB redesign for larger 8-lead SOIC layout; better thermal dissipation and hand-solderability. | Select if board space permits SOIC and manual rework is preferred over automated SMT placement. |
| AT25020B-MAHL-T | 2 Kbit SPI EEPROM (256 × 8), 1.8–5.5 V, 20 MHz SPI interface; no Ready/Busy pin - relies on WIP flag polling. | Lacks Microwire compatibility and DO-based status signaling; requires different driver stack and timing logic. | Select only if migrating to SPI architecture and accepting reduced density; not drop-in compatible. |
Compared with 93C86B-E/SN, the 93C86BT-E/OT saves >40% board area and suits high-volume automotive SMT lines; versus AT25020B-MAHL-T, it retains Microwire legacy support and hardware-ready signaling critical for real-time safety-critical reads.
Availability
93C86BT-E/OT is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLCs, and medical device calibration storage requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 93C86BT-E/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, serving automotive, industrial, consumer, and communications markets with high-reliability semiconductor products.
The 93Cxx EEPROM family was engineered specifically for cost-sensitive, space-constrained embedded systems needing robust nonvolatile storage with minimal pin count and proven Microwire interoperability - especially where legacy MCU peripherals lack SPI support.
FAQ
What is the memory organization of the 93C86BT-E/OT?
The 93C86BT-E/OT is a fixed 2048 × 8-bit (16 Kbit) serial EEPROM. Unlike C-variant parts, it has no ORG pin and does not support x16 configuration. Its organization is hardwired to 8-bit words, simplifying address decoding and eliminating external logic for word-size selection.
Does the 93C86BT-E/OT have a Program Enable (PE) pin?
No, the 93C86BT-E/OT does not include a PE pin. That feature is exclusive to the 'C' versions (e.g., 93C86C). Write protection for the 93C86BT-E/OT is implemented exclusively through firmware commands: EWEN to enable and EWDS to disable erase/write operations.
What is the minimum Chip Select low time (TCSL) required between instructions for the 93C86BT-E/OT?
The 93C86BT-E/OT requires a minimum Chip Select low time (TCSL) of 250 ns between consecutive instructions. This ensures internal logic resets properly and prevents command corruption - a critical timing constraint for reliable Microwire communication in automotive microcontroller drivers.
Can the 93C86BT-E/OT operate at 3.3 V?
No, the 93C86BT-E/OT is specified only for 4.5–5.5 V operation. Its power-on reset threshold is 3.8 V, and attempting to run at 3.3 V will result in undefined behavior, failed writes, or data corruption. For 3.3 V systems, consider the 93LC86BT-E/OT (2.5–5.5 V range) instead.
How is Ready/Busy status reported on the 93C86BT-E/OT?
The 93C86BT-E/OT reports Ready/Busy status on the DO pin: DO = low indicates an erase or write operation is in progress; DO = high means the device is ready for the next instruction. Status is only valid after CS is brought high following ≥250 ns low time (TCSL); DO is High-Z otherwise.
93C86BT-E/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 ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
93C86BT-E/OT FAQ
1.How can I place an order for 93C86BT-E/OT through Aetrix?
Please submit a Request for Quotation (RFQ) for 93C86BT-E/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-E/OT reliable?
The price and inventory of 93C86BT-E/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-E/OT is usually 5 days.
3.What payment methods are accepted for 93C86BT-E/OT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 93C86BT-E/OT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 93C86BT-E/OT?
93C86BT-E/OT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 93C86BT-E/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-E/OT?
For technical support, including 93C86BT-E/OT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 93C86BT-E/OT requirements.
6.How does Aetrix verify that 93C86BT-E/OT is sourced from the original manufacturer or authorized distributors?
All 93C86BT-E/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-E/OT meets industry standards.
7.What is the process for return or replacement of 93C86BT-E/OT?
All 93C86BT-E/OT units undergo pre-shipment inspection (PSI). If there is an issue with 93C86BT-E/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-E/OT part is unused and in its original packaging.
Return procedure for 93C86BT-E/OT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
93C86BT-E/OT Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
