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Microchip Technology 93LC86B-E/SN
- Part No.:
- 93LC86B-E/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
93LC86B-E/SN.pdf
- Description:
- IC EEPROM 16KBIT MICROWIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,816
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Product details
Overview
93LC86B-E/SN from Microchip Technology Inc. is a 16K-bit, 1024 × 16-bit organization serial EEPROM with Microwire-compatible 3-wire interface, operating from 2.5V to 5.5V across -40°C to +125°C (Automotive grade). It features self-timed erase/write cycles, 1,000,000 endurance cycles, >200-year data retention, and power-on/off data protection. Used in automotive body control modules for calibration storage and configuration persistence.
For engineers reviewing the 93LC86B-E/SN datasheet, 93LC86B-E/SN pinout, 93LC86B-E/SN application, or 93LC86B-E/SN equivalent, key selection criteria include automotive temperature rating, 16-bit word organization, VCC range compatibility with 3.3V/5V systems, and absence of ORG/PE pins - confirming fixed x16 configuration and always-enabled programming.
Technical Context
The 93LC86B-E/SN implements a synchronous serial Microwire interface with CS, CLK, DI, and DO signals. It uses dedicated 16-bit memory organization (no ORG pin), eliminating external configuration logic. All instructions - READ, WRITE, ERASE, ERAL, WRAL, EWEN, EWDS - are clocked on rising CLK edges with strict timing requirements (e.g., TCKH ≥ 250 ns at 2.5–4.5V).
Internal architecture includes an address decoder, mode decode logic, and output buffer driving DO during read or Ready/Busy status polling. Programming requires no external high-voltage supply; auto-erase precedes write, and all operations are self-timed (TWC = 5 ms typical for erase/write, TE C = 6 ms for ERAL).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (1024 × 16-bit) - fixed x16 organization supports efficient storage of 16-bit sensor calibration tables or firmware flags. |
| VCC Range | 2.5V to 5.5V - compatible with both 3.3V microcontrollers and legacy 5V automotive subsystems without level-shifting. |
| Temperature Grade | Automotive (E): –40°C to +125°C - qualified for under-hood and transmission control unit environments. |
| Endurance | 1,000,000 erase/write cycles - enables frequent reprogramming in adaptive learning systems (e.g., throttle position adaptation). |
| Data Retention | >200 years at +25°C - ensures long-term reliability of vehicle VIN, security keys, and odometer data across product lifetime. |
| Interface | Microwire-compatible 3-wire serial (CS/CLK/DI/DO) - minimal GPIO usage; no SPI mode bits or complex initialization required. |
| Write Cycle Time | 5 ms max (TWC) - deterministic latency allows predictable timing budgets in real-time safety-critical boot sequences. |
Pinout & Package
8-pin SOIC package (SN suffix), 3.9 mm × 4.9 mm footprint, RoHS-compliant matte tin finish. Pin 1 marked by laser dot; standard JEDEC SOIC-8 outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Chip Select | Active-high enable; device enters Standby mode when low; must be held low ≥250 ns between commands (TCSL). |
| CLK (Pin 2) | Serial Clock | Rising-edge synchronized I/O; clocking may pause mid-sequence; no clocks required during self-timed write cycle. |
| DI (Pin 3) | Data Input | Receives Start bit, opcode, address, and write data; must be stable before first rising CLK edge after CS high. |
| DO (Pin 4) | Data Output / Status | Outputs read data or Ready/Busy (low = busy); enters High-Z on CS falling edge; used for polling during programming. |
| VSS (Pin 5) | Ground | Reference for all digital and analog circuitry; requires low-impedance connection to system ground plane. |
| VCC (Pin 8) | Power Supply | 2.5–5.5V supply; internal voltage detect (VPOR = 1.5V typ.) prevents operation below safe threshold. |
Key Features
| Feature | Design Value |
|---|---|
| Self-timed Erase/Write | Eliminates need for external timing control or software delays - simplifies driver code and improves system predictability. |
| Automatic ERAL before WRAL | Ensures full-array write integrity without requiring separate erase command - reduces firmware complexity and command sequence errors. |
| Power-On/Off Data Protection | Hardware-level lockout below VCC = 1.5V prevents corruption during brown-out or hot-swap events in automotive power domains. |
| Ready/Busy via DO pin | Enables non-blocking polling instead of fixed delays - optimizes CPU utilization in resource-constrained ECUs. |
| Industry-standard 3-wire interface | Direct compatibility with legacy Microwire peripherals and widely supported MCU hardware SPI peripherals in 3-wire mode. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Storing adaptive fuel trim values and misfire counters that update dynamically during vehicle operation. IC Role / Device Role / Timing Role: Nonvolatile configuration register providing persistent memory for closed-loop engine calibration parameters. Use Value: Enables continuous learning across ignition cycles without battery backup; 1M endurance supports daily recalibration over 10+ year vehicle life. | Use Scenario: Holding door lock/unlock configuration, mirror position presets, and lighting profiles tied to user ID. IC Role / Device Role / Timing Role: Parameter storage IC interfacing directly with 8-bit/16-bit automotive MCUs via Microwire. Use Value: Automotive-grade temperature tolerance ensures reliable operation in glovebox-mounted BCMs exposed to cabin thermal cycling. |
| Transmission Control Unit (TCU) | Advanced Driver Assistance System (ADAS) Camera Module |
Use Scenario: Saving shift pattern adaptations and torque converter clutch learning data across power cycles. IC Role / Device Role / Timing Role: Dedicated x16 EEPROM for high-efficiency storage of 16-bit gear ratio correction factors and pressure sensor offsets. Use Value: Fixed 1024×16 organization eliminates software bit-packing overhead and reduces firmware validation scope. | Use Scenario: Storing lens calibration coefficients, white balance matrices, and HDR exposure lookup tables during camera startup. IC Role / Device Role / Timing Role: Boot-time configuration memory accessed before main image processor initialization. Use Value: 5 ms max write time enables fast factory calibration updates during end-of-line testing without extending test station dwell time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 93LC86C-E/SN | Includes ORG and PE pins; supports selectable x8/x16 organization and hardware write-protection. | Requires external logic to drive ORG; adds PCB routing and BOM cost; suitable where field-reconfigurable word size is needed. | Select only if dual-word-size flexibility or hardware write-enable gating is required; otherwise 93LC86B-E/SN offers simpler layout and lower risk. |
| AT25128B-MAHL-T | SPI interface (4-wire), 128 Kbit (16K × 8), 1.8–5.5V, industrial temp only (–40°C to +85°C). | Lacks automotive qualification; incompatible pinout and protocol - requires MCU firmware rewrite and PCB redesign. | Consider only for non-automotive designs needing higher density; not a drop-in replacement for 93LC86B-E/SN in E-grade applications. |
Compared with 93LC86C-E/SN, the 93LC86B-E/SN reduces design complexity by removing ORG/PE pins and fixing x16 organization, while maintaining identical automotive qualification and endurance. Versus AT25128B-MAHL-T, it preserves Microwire compatibility and AEC-Q100 alignment but trades density for guaranteed under-hood operation.
Availability
93LC86B-E/SN is available at Aetrix Electronics and suitable for automotive control units, industrial programmable logic controllers, and medical diagnostic equipment requiring stable component supply with extended lifecycle support and traceable sourcing.
Supply support for 93LC86B-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 microcontroller, mixed-signal, analog, and Flash-IP solutions, serving automotive, industrial, consumer, and communications markets with vertically integrated silicon and development tools.
The 93LCxx family delivers low-voltage, low-power serial EEPROMs optimized for space-constrained embedded systems requiring robust nonvolatile storage with minimal pin count and deterministic timing - especially in automotive and industrial environments.
FAQ
What is the memory organization of the 93LC86B-E/SN?
The 93LC86B-E/SN has a fixed 1024 × 16-bit (16K-bit) organization. Unlike the 'C' variants, it lacks an ORG pin and does not support x8/x16 configuration switching - the 16-bit word size is hardwired, simplifying system design and eliminating external configuration logic required by 93LC86C-E/SN.
Does the 93LC86B-E/SN support hardware write protection?
No, the 93LC86B-E/SN does not include a Program Enable (PE) pin and therefore lacks hardware write protection. Programming is always enabled; data integrity relies on firmware-controlled EWEN/EWDS commands and power-supply-based write inhibition below VCC = 1.5V. For hardware-gated write capability, consider 93LC86C-E/SN instead.
What is the maximum clock frequency supported by the 93LC86B-E/SN?
The 93LC86B-E/SN supports up to 3 MHz clock frequency when VCC ≥ 4.5V, 2 MHz at 2.5V ≤ VCC < 4.5V, and 1 MHz at 1.8V ≤ VCC < 2.5V. Since the 93LC86B-E/SN operates from 2.5V to 5.5V, its usable maximum is 3 MHz (at 4.5–5.5V) or 2 MHz (at 2.5–4.5V), with corresponding minimum clock high/low times specified in DS21797L Table 1-2.
Can the 93LC86B-E/SN be used in place of the 93LC86A-E/SN?
No - the 93LC86B-E/SN (1024 × 16-bit) is not functionally interchangeable with the 93LC86A-E/SN (2048 × 8-bit), despite identical pinout and voltage/temperature specs. Addressing, instruction timing, and data width differ: READ/WRITE require 11 address bits and 16 data bits for 93LC86B-E/SN versus 11 bits and 8 bits for 93LC86A-E/SN. Firmware and data structure changes are mandatory.
Is the 93LC86B-E/SN RoHS compliant and lead-free?
Yes, the 93LC86B-E/SN is RoHS compliant and features a Pb-free matte tin (Sn) finish per JEDEC J-STD-609. The 'SN' package designation confirms compliance, and the device meets Microchip's green packaging standards as documented in DS21797L-page 1.
93LC86B-E/SN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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
93LC86B-E/SN FAQ
1.How can I place an order for 93LC86B-E/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 93LC86B-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 93LC86B-E/SN reliable?
The price and inventory of 93LC86B-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 93LC86B-E/SN is usually 5 days.
3.What payment methods are accepted for 93LC86B-E/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 93LC86B-E/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 93LC86B-E/SN?
93LC86B-E/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 93LC86B-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 93LC86B-E/SN?
For technical support, including 93LC86B-E/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 93LC86B-E/SN requirements.
6.How does Aetrix verify that 93LC86B-E/SN is sourced from the original manufacturer or authorized distributors?
All 93LC86B-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 93LC86B-E/SN meets industry standards.
7.What is the process for return or replacement of 93LC86B-E/SN?
All 93LC86B-E/SN units undergo pre-shipment inspection (PSI). If there is an issue with 93LC86B-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 93LC86B-E/SN part is unused and in its original packaging.
Return procedure for 93LC86B-E/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
93LC86B-E/SN Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
Microchip Technology
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AT24C02C-SSHM-T
Microchip Technology
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24LC01BT-I/OT
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M24C02-FMC6TG
STMicroelectronics
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
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AT24C04C-SSHM-T
Microchip Technology
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24LC01BT-I/SN
Microchip Technology
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24AA02UIDT-I/OT
Microchip Technology
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AT24C08C-STUM-T
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