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Microchip Technology 93LC86C-E/MS
- Part No.:
- 93LC86C-E/MS
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
93LC86C-E/MS.pdf
- Description:
- IC EEPROM 16KBIT MICROWIRE 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,254
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Product details
Overview
93LC86C-E/MS from Microchip Technology Inc. is a 16 Kbit Microwire-compatible serial EEPROM with configurable 8-/16-bit word organization via the ORG pin, Program Enable (PE) write-protection, and industrial-temperature operation (–40°C to +85°C). It delivers 1 million erase/write cycles, >200-year data retention, and operates from 2.5V to 5.5V - used in embedded system configuration storage, sensor calibration data logging, and power-management parameter backup.
For engineers reviewing the 93LC86C-E/MS datasheet, 93LC86C-E/MS pinout, 93LC86C-E/MS application, or 93LC86C-E/MS equivalent, key selection criteria include VCC range compatibility (2.5–5.5 V), ORG/PE pin control logic, self-timed erase/write timing (5 ms max), Ready/Busy status polling via DO, and MSOP-8 package footprint constraints.
Technical Context
The 93LC86C-E/MS implements a synchronous 3-wire Microwire interface (CS, CLK, DI/DO) with start-bit detection and opcode-driven command execution. Its dual-word-size architecture relies on external logic applied to the ORG pin: high for 1024 × 16-bit, low for 2048 × 8-bit organization - both supported within the same silicon die.
Write protection is enforced by the PE pin (must be high for programming), and internal power-on/off data protection activates below 1.5 V VCC threshold. All erase/write operations are self-timed and include automatic ERAL before WRAL, with DO pin serving dual role as data output and Ready/Busy indicator during active cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 16 Kbit (2048 × 8 or 1024 × 16, selectable via ORG pin) |
| VCC range | 2.5 V to 5.5 V - supports wide-input industrial rails and battery-backed systems |
| Endurance | 1,000,000 erase/write cycles - enables long-term field calibration updates |
| Data retention | >200 years at 25°C - ensures firmware/config persistence over product lifetime |
| Write cycle time | 5 ms max (TWC) - defines minimum interval between successive writes |
| Operating temp | –40°C to +85°C (Industrial grade) - validated for harsh ambient environments |
| Interface | Microwire 3-wire serial (CS/CLK/DI/DO) - minimal GPIO usage, no SPI mode pins required |
Pinout & Package
8-pin MSOP (Micro Small Outline Package), 3.0 mm × 3.0 mm body, 0.65 mm pitch, exposed pad optional (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-high enable; must be held low ≥250 ns between commands to reset internal state |
| CLK | Serial Clock | Rising-edge synchronized I/O; clock can pause mid-transfer without corruption |
| DI | Data Input | Accepts Start bit, opcodes, addresses, and write data; shares bus with DO in single-line configurations |
| DO | Data Output / Status | Outputs read data or Ready/Busy (low = busy); enters High-Z when CS low or not reading |
| VSS | Ground | Reference return path; must be low-impedance for stable timing and noise immunity |
| ORG | Organization select | Logic-high → 1024×16-bit; logic-low → 2048×8-bit; must be fixed before first instruction |
| PE | Program Enable | Must be high to allow ERASE/WRITE; tied low for permanent write-protection |
| VCC | Power supply | 2.5–5.5 V input; internal POR circuit triggers at ~1.5 V to prevent partial writes during brownout |
Key Features
| Feature | Design Value |
|---|---|
| Word-size configurability | Single device supports either 8-bit or 16-bit data alignment via ORG pin voltage - eliminates BOM splits for mixed-width systems |
| Hardware write protection | Dedicated PE pin enables system-level lockout of memory writes - prevents accidental firmware corruption during debug or field service |
| Self-timed erase/write | No external timing control needed; internal logic manages auto-erase before write - simplifies host MCU firmware |
| Ready/Busy status signaling | DO pin doubles as status indicator during programming - enables polling instead of fixed delays, improving system responsiveness |
| Power-on/off data protection | Automatic inhibition below 1.5 V VCC - guarantees data integrity during power ramp-up/down sequences |
Applications
| Industrial Sensor Calibration | Embedded System Configuration |
|---|---|
Use Scenario: Storing factory-trimmed offset/gain coefficients for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed at boot; ORG set to 16-bit to match ADC output width. Use Value: Eliminates need for external trimming components and enables field recalibration via host MCU without hardware changes. | Use Scenario: Holding user-defined operating parameters (e.g., display brightness, communication baud rate) in medical infusion pumps. IC Role / Device Role / Timing Role: Serial configuration store interfaced to an 8-bit microcontroller; ORG tied low for byte-aligned access. Use Value: Survives power loss and retains settings across 10+ years of clinical use with no maintenance. |
| Power Management Backup | Firmware Parameter Storage |
Use Scenario: Saving last-known state (voltage thresholds, fault counters) in uninterruptible power supplies during AC dropout. IC Role / Device Role / Timing Role: Low-power backup memory; PE held low during normal operation to prevent spurious writes during transients. Use Value: Enables graceful shutdown and rapid recovery with zero data loss, even after extended brownouts. | Use Scenario: Storing bootloader-configurable options (boot device priority, security keys) in network routers. IC Role / Device Role / Timing Role: Secure nonvolatile storage; accessed only during firmware update or initialization using verified command sequences. Use Value: Supports field-upgradable features while maintaining tamper resistance via hardware PE control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 93LC86B-E/MS | Fixed 1024×16-bit organization; no ORG or PE pins - simpler interface but no runtime word-size flexibility or hardware write lock | Suitable where memory width is static and write protection is handled in software or upstream logic | Select if design requires deterministic 16-bit access and eliminates two control signals |
| AT25128B-MAHL-T | SPI interface (4-wire), 128 Kbit capacity, 2.5–5.5 V, no ORG/PE - higher density but incompatible protocol and pinout | Used where host MCU has dedicated SPI peripherals and larger config space is needed | Choose only if migrating to SPI-based architecture and accepting layout change |
Compared with 93LC86B-E/MS, the 93LC86C-E/MS adds runtime word-size selection and hardware write lock - critical for mixed-data-width systems requiring field reconfiguration. Versus AT25128B-MAHL-T, it retains Microwire compatibility and smaller footprint but trades off capacity and interface universality.
Availability
93LC86C-E/MS is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded system configuration, and power management backup requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 93LC86C-E/MS 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, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 93LC86C-E/MS belongs to Microchip's legacy 93XX serial EEPROM family, designed specifically for low-power, pin-constrained embedded systems needing reliable, low-voltage nonvolatile storage with flexible word organization.
FAQ
What is the function of the ORG pin on the 93LC86C-E/MS?
The ORG pin on the 93LC86C-E/MS selects memory word size: logic high configures the device as 1024 × 16-bit, logic low as 2048 × 8-bit. This pin must be driven to a valid logic level (VCC or VSS) before any instruction is issued - floating the ORG pin will cause undefined behavior. The 93LC86C-E/MS is the only version in the 93LC86 family with this configurable feature.
How does the PE pin protect memory on the 93LC86C-E/MS?
The PE (Program Enable) pin on the 93LC86C-E/MS must be held high to permit ERASE or WRITE operations; tying it low permanently disables all programming functions. Unlike software locks, this hardware-level protection remains active regardless of MCU state or firmware bugs - ensuring robust immunity to accidental writes during development or field operation of the 93LC86C-E/MS.
What is the maximum clock frequency supported by the 93LC86C-E/MS?
The 93LC86C-E/MS supports up to 3 MHz clock frequency when VCC is 4.5–5.5 V, 2 MHz at 2.5–4.5 V, and 1 MHz at 1.8–2.5 V. Since the 93LC86C-E/MS operates from 2.5 V minimum, its practical maximum is 2 MHz under rated conditions. Exceeding these limits risks command misreads or timing violations during opcode/address/data transfer.
Can the 93LC86C-E/MS be used in automotive applications?
The 93LC86C-E/MS is rated for Industrial temperature (–40°C to +85°C), not Automotive (–40°C to +125°C). While the 'E' suffix in the part number denotes Microchip's Automotive-grade marking option, the -E/MS variant specifically refers to the Industrial-temp MSOP package. For true automotive use, the 93LC86C-E/MN (TDFN, Automotive grade) or 93LC86C-E/ST (TSSOP, Automotive) must be selected - the 93LC86C-E/MS is not qualified for under-hood deployment.
What happens to the DO pin during a write operation on the 93LC86C-E/MS?
During a write operation on the 93LC86C-E/MS, the DO pin transitions from High-Z to active output and indicates Ready/Busy status: logic low means programming is in progress, logic high means completion. This status remains valid only if CS is brought high after ≥250 ns low time (TCSL); if CS stays low throughout, DO remains in High-Z and no status is available. After completion, issuing a Start bit then lowering CS clears the status flag.
93LC86C-E/MS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- 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:
- 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-MSOP
93LC86C-E/MS FAQ
1.How can I place an order for 93LC86C-E/MS through Aetrix?
Please submit a Request for Quotation (RFQ) for 93LC86C-E/MS 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 93LC86C-E/MS reliable?
The price and inventory of 93LC86C-E/MS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 93LC86C-E/MS is usually 5 days.
3.What payment methods are accepted for 93LC86C-E/MS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 93LC86C-E/MS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 93LC86C-E/MS?
93LC86C-E/MS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 93LC86C-E/MS 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 93LC86C-E/MS?
For technical support, including 93LC86C-E/MS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 93LC86C-E/MS requirements.
6.How does Aetrix verify that 93LC86C-E/MS is sourced from the original manufacturer or authorized distributors?
All 93LC86C-E/MS 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 93LC86C-E/MS meets industry standards.
7.What is the process for return or replacement of 93LC86C-E/MS?
All 93LC86C-E/MS units undergo pre-shipment inspection (PSI). If there is an issue with 93LC86C-E/MS, 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 93LC86C-E/MS part is unused and in its original packaging.
Return procedure for 93LC86C-E/MS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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