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Microchip Technology 93LC86BT-E/SN
- Part No.:
- 93LC86BT-E/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
93LC86BT-E/SN.pdf
- Description:
- IC EEPROM 16KBIT MICROWIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,809
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Product details
Overview
93LC86BT-E/SN from Microchip Technology Inc. is a 16 Kbit (1024 × 16) low-voltage serial EEPROM with Microwire-compatible 3-wire interface, operating from 2.5V to 5.5V, rated for automotive temperature range (−40°C to +125°C), and housed in an 8-lead SOIC package (SN). It supports self-timed erase/write cycles, automatic ERAL/WRAL, and Ready/Busy status via DO pin - used in engine control units, ADAS sensor calibration storage, and automotive infotainment configuration memory.
For engineers reviewing the 93LC86BT-E/SN datasheet, 93LC86BT-E/SN pinout, 93LC86BT-E/SN application, or 93LC86BT-E/SN equivalent, key selection criteria include VCC range (2.5–5.5 V), 16-bit organization, automotive-grade temperature support, write endurance (1M cycles), and compatibility with legacy Microwire controllers in safety-critical embedded systems.
Technical Context
The 93LC86BT-E/SN implements a synchronous serial Microwire interface with CS, CLK, and DI/DO pins. It uses dedicated 16-bit memory organization (no ORG pin), eliminating external configuration logic required by 'C' variants. All instructions - READ, WRITE, ERASE, ERAL, WRAL - are executed via clocked bit-serial command sequences with precise timing constraints (e.g., TCKH ≥ 250 ns at 2.5–4.5 V).
Internal power-on reset and voltage-detect circuitry (VPOR = 1.5 V typical) ensure data protection during brown-out conditions. The device powers up in EWDS mode, requiring explicit EWEN before programming, and supports sequential read and status polling via DO pin - enabling deterministic firmware-level timing control without external wait-state logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 16 Kbit (1024 × 16) - fixed 16-bit word organization, no ORG pin needed |
| VCC range | 2.5 V to 5.5 V - supports wide-input automotive power rails and 3.3 V/5 V mixed-signal systems |
| Endurance | 1,000,000 erase/write cycles - sufficient for frequent calibration updates over 15+ year vehicle lifetime |
| Data retention | >200 years at +25°C - ensures nonvolatile storage integrity across full automotive lifecycle |
| Max clock frequency | 3 MHz at VCC ≥ 4.5 V - enables fast configuration loading without CPU overhead |
| Write cycle time | 5 ms per byte/word - deterministic timing allows precise firmware timeout handling |
| Operating temp | −40°C to +125°C (Automotive E grade) - qualified for under-hood and ADAS module environments |
Pinout & Package
8-lead SOIC package (SN), 3.9 mm × 4.9 mm body, 1.27 mm pitch, RoHS-compliant matte tin finish. Pin 1 marked by laser dot; pin 1 ID corner indicated on top marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-high enable; must be held low ≥250 ns between commands; controls Standby entry/exit |
| CLK | Serial Clock | Rising-edge synchronized I/O; stoppable mid-sequence; no clock required during self-timed write |
| DI | Data Input | Accepts Start bit, opcode, address, and data; high-impedance when CS low |
| DO | Data Output / Status | Outputs read data or Ready/Busy (low = busy); enters High-Z on CS falling edge |
| VSS | Ground | Reference for all I/O and internal logic; requires low-impedance connection to system GND plane |
| VCC | Power Supply | 2.5–5.5 V input; internal POR circuit triggers at ~1.5 V to prevent partial writes during power ramp |
Key Features
| Feature | Design Value |
|---|---|
| Self-timed erase/write | Eliminates need for external timing control or firmware delay loops - reduces MCU resource usage |
| Automatic ERAL before WRAL | Guarantees full-array readiness before bulk write - prevents partial-write corruption in safety-critical updates |
| Power-on/off data protection | Hardware-enforced write inhibition below VPOR threshold - prevents inadvertent writes during supply transients |
| Ready/Busy status on DO | Enables polling-based synchronization without interrupt lines - simplifies integration in resource-constrained MCUs |
| Pb-free & RoHS compliant | Meets automotive ELV Directive requirements; matte tin finish ensures solderability and wire-bond reliability |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
Use Scenario: Storing adaptive fuel trim tables and knock sensor calibration coefficients updated during vehicle operation. IC Role / Device Role / Timing Role: Nonvolatile configuration memory interfaced directly to 8-bit/16-bit automotive MCU via Microwire bus. Use Value: 1M endurance and >200-year retention ensure calibration data survives 15+ years of repeated updates without degradation. | Use Scenario: Retaining camera lens distortion parameters and radar object detection thresholds across ignition cycles. IC Role / Device Role / Timing Role: Dedicated parameter store accessed during boot sequence and runtime recalibration routines. Use Value: −40°C to +125°C rating and 2.5–5.5 V operation guarantee reliable read/write in under-hood ADAS modules. |
| Infotainment System | Body Control Module (BCM) |
Use Scenario: Holding user preferences (volume, display brightness, language) and Bluetooth pairing keys. IC Role / Device Role / Timing Role: Low-power serial EEPROM sharing bus with other peripherals; accessed only during setup or state change. Use Value: 1 µA standby current minimizes battery drain during vehicle sleep mode (CAN/LIN bus off). | Use Scenario: Storing door lock actuator calibration offsets and window auto-reverse learning points. IC Role / Device Role / Timing Role: Safety-relevant configuration memory requiring AEC-Q100-aligned reliability and deterministic write timing. Use Value: 5 ms max write cycle and hardware write-protection (EWDS/EWEN) enable safe, auditable parameter updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 93LC86CT-E/SN | Includes ORG and PE pins; supports both 8-bit and 16-bit organization via external logic | Requires additional board routing and pull-up/down resistors for ORG/PE; adds design complexity | Select only if dual-word-size flexibility is required; otherwise 93LC86BT-E/SN offers simpler layout and lower BOM count |
| AT25128B-MAHL-T | SPI interface (4-wire), 128 Kbit capacity, 2.5–5.5 V, −40°C to +125°C, SOIC-8 | Not Microwire-compatible; requires SPI controller and different command set; higher density but larger footprint | Choose for new designs needing SPI standardization or >16 Kbit capacity; not drop-in for existing Microwire firmware |
Compared with 93LC86CT-E/SN, the 93LC86BT-E/SN eliminates ORG/PE routing and reduces firmware initialization steps; compared with AT25128B-MAHL-T, it maintains legacy Microwire compatibility and smaller code footprint but lacks SPI ecosystem tooling support.
Availability
93LC86BT-E/SN is available at Aetrix Electronics and suitable for automotive ECU development, ADAS sensor calibration systems, and infotainment configuration storage requiring stable component supply across extended production lifecycles.
Supply support for 93LC86BT-E/SN 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 microcontrollers, analog devices, and memory solutions, serving automotive, industrial, and consumer markets with AEC-Q100-qualified components.
The 93LC86BT-E/SN belongs to Microchip's 93XX86 serial EEPROM product line, designed specifically for automotive-grade nonvolatile storage where Microwire interface compatibility, extended temperature operation, and high endurance are mandatory.
FAQ
What is the memory organization of the 93LC86BT-E/SN?
The 93LC86BT-E/SN has a fixed 1024 × 16-bit (16 Kbit) organization. Unlike 'C' variants, it does not include an ORG pin - the 16-bit word size is hardwired, simplifying PCB layout and firmware initialization. This matches the 'B' variant designation in Microchip's device selection table.
Does the 93LC86BT-E/SN require external write-protection circuitry?
No. The 93LC86BT-E/SN powers up in Erase/Write Disable (EWDS) mode and requires an explicit EWEN instruction before any WRITE or ERASE command executes. This built-in firmware-controlled protection eliminates need for external hardware write-protect switches or resistors - critical for automotive functional safety compliance.
What is the maximum clock frequency supported by the 93LC86BT-E/SN at 3.3 V?
At VCC = 3.3 V (within 2.5–4.5 V range), the 93LC86BT-E/SN supports a maximum clock frequency of 2 MHz, as specified in Table 1-2 (A1). Clock high time (TCKH) must be ≥250 ns and clock low time (TCKL) ≥200 ns under these conditions.
How does the Ready/Busy status work on the 93LC86BT-E/SN DO pin?
During ERASE or WRITE operations, the DO pin outputs Ready/Busy status: logic low indicates ongoing programming, logic high signals completion. Status is valid only after CS is brought high for ≥250 ns (TCSL) post-command - and DO returns to High-Z on CS falling edge. This enables deterministic polling without external components.
Is the 93LC86BT-E/SN compatible with standard Microwire controllers?
Yes. The 93LC86BT-E/SN implements full Microwire protocol compliance: 3-wire interface (CS, CLK, DI/DO), start-bit detection, opcode-driven instruction set (READ, WRITE, ERAL, WRAL), and synchronous rising-edge clocking. It requires no protocol translation and works with legacy Microwire peripherals and drivers.
93LC86BT-E/SN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not 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:
- 5ms
- Access Time:
- -
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
93LC86BT-E/SN FAQ
1.How can I place an order for 93LC86BT-E/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 93LC86BT-E/SN 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 93LC86BT-E/SN reliable?
The price and inventory of 93LC86BT-E/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 93LC86BT-E/SN is usually 5 days.
3.What payment methods are accepted for 93LC86BT-E/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 93LC86BT-E/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 93LC86BT-E/SN?
93LC86BT-E/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 93LC86BT-E/SN 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 93LC86BT-E/SN?
For technical support, including 93LC86BT-E/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 93LC86BT-E/SN requirements.
6.How does Aetrix verify that 93LC86BT-E/SN is sourced from the original manufacturer or authorized distributors?
All 93LC86BT-E/SN 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 93LC86BT-E/SN meets industry standards.
7.What is the process for return or replacement of 93LC86BT-E/SN?
All 93LC86BT-E/SN units undergo pre-shipment inspection (PSI). If there is an issue with 93LC86BT-E/SN, 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 93LC86BT-E/SN part is unused and in its original packaging.
Return procedure for 93LC86BT-E/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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