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Microchip Technology 93LC86CT-I/MC
- Part No.:
- 93LC86CT-I/MC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-VFDFN Exposed Pad
- Datasheet:
-
93LC86CT-I/MC.pdf
- Description:
- IC EEPROM 16KBIT MICROWIRE 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,174
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Product details
Overview
93LC86CT-I/MC from Microchip Technology Inc. is a 16 Kbit Microwire-compatible serial EEPROM with configurable 8-/16-bit word organization, enabled via the ORG pin. It operates from 2.5V to 5.5V, supports Industrial and Extended temperature ranges (–40°C to +125°C), and delivers 1 million erase/write cycles with >200-year data retention. It is used in embedded systems for parameter storage, calibration data retention, and configuration memory where low-power nonvolatile storage is required.
For engineers reviewing the 93LC86CT-I/MC datasheet, 93LC86CT-I/MC pinout, 93LC86CT-I/MC application, or 93LC86CT-I/MC equivalent, key selection considerations include its dual-word-size flexibility (via ORG), Program Enable (PE) write-protection, Ready/Busy status signaling on DO, self-timed Erase/Write, and compatibility with legacy Microwire™ host controllers in space-constrained designs using the 8-lead 2x3 DFN package.
Technical Context
The 93LC86CT-I/MC implements a synchronous 3-wire Microwire interface (CS, CLK, DI/DO) with dedicated PE and ORG control pins. Its internal architecture includes an address decoder, mode decode logic, and output buffer enabling sequential read, ERAL (Erase All), WRAL (Write All), and instruction-based page-level operations.
It uses advanced CMOS technology to achieve ultra-low standby current (≤5 µA) and supports voltage-detect power-on protection (VPOR = 1.5 V typical). The device requires external logic to drive ORG and PE - tying ORG high selects x16 mode (1024 × 16), low selects x8 mode (2048 × 8); PE must be high to enable programming.
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 power rails and battery-backed operation |
| Endurance | 1,000,000 erase/write cycles - enables long-term field reconfiguration without wear-out concerns |
| Data Retention | >200 years at 25°C - ensures firmware/config integrity across product lifetime |
| Max Clock Frequency | 3 MHz at VCC ≥ 4.5 V - defines maximum throughput for host controller timing budget |
| Write Cycle Time | 5 ms (TWC) - determines minimum latency between successive write commands |
| Standby Current | ≤5 µA (ICCS) - critical for always-on or energy-harvesting applications |
| Operating Temp | –40°C to +125°C (E grade) - qualified for under-hood automotive and industrial edge nodes |
Pinout & Package
8-lead 2x3 DFN (MC) package, wettable flank, Pb-free Matte Tin finish, exposed pad (to be connected to VSS or left floating per Microchip spec).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-high enable; must be held low ≥250 ns between instructions; controls Standby entry/exit |
| CLK | Serial Clock | Synchronizes all data transfers on rising edge; stoppable mid-sequence for host flexibility |
| DI | Data Input | Receives Start bit, opcodes, addresses, and write data; shares net with DO in single-line configurations |
| DO | Data Output / Status | Outputs read data or Ready/Busy (low = busy); enters High-Z when CS goes low |
| VSS | Ground | Reference for all I/O and internal logic; connects to exposed pad in MC package |
| ORG | Organization Select | High = x16 mode (1024 words); low = x8 mode (2048 words); must be statically tied |
| PE | Program Enable | High = write enabled; low = full array write-protected; not floatable |
| VCC | Power Supply | 2.5–5.5 V supply; internal POR circuit triggers at ~1.5 V to prevent partial writes |
Key Features
| Feature | Design Value |
|---|---|
| Word-size configurability | Hardware-selectable 8-bit or 16-bit organization via ORG pin - eliminates need for software remapping or external glue logic |
| Hardware write protection | Dedicated PE pin enables system-level lockout of memory writes - prevents corruption during brown-out or firmware faults |
| Self-timed Erase/Write | No external timing control needed; internal logic manages auto-erase before write - simplifies host driver development |
| Ready/Busy status signaling | Real-time DO pin feedback during programming - allows polling instead of fixed-delay waits, improving system responsiveness |
| Power-on/off data protection | Internal voltage detector disables writes below VPOR threshold - guarantees data integrity across power transitions |
| Microwire™ compatibility | Direct drop-in replacement for legacy Microwire host interfaces - preserves existing firmware and PCB layout |
Applications
| Automotive Body Control Module | Industrial PLC Configuration Storage |
|---|---|
Use Scenario: Storing seat/mirror position presets, lighting profiles, and door lock settings in a vehicle body control unit. IC Role / Device Role / Timing Role: Nonvolatile configuration memory interfaced via Microwire to an 8-bit MCU; accessed infrequently but must retain data over 15+ years. Use Value: 1M endurance and >200-year retention ensure reliable recall of user preferences across vehicle lifetime without recalibration. | Use Scenario: Holding I/O mapping tables, PID tuning parameters, and calibration coefficients in a programmable logic controller. IC Role / Device Role / Timing Role: Parameter EEPROM co-located with main controller; accessed during startup and maintenance mode via 3-wire interface. Use Value: Dual-word organization (x8/x16) allows optimal alignment with 8-bit or 16-bit register sets, reducing firmware overhead for data packing/unpacking. |
| Medical Infusion Pump Calibration | Smart Energy Meter Firmware Settings |
Use Scenario: Storing flow-rate calibration constants and safety thresholds in a Class II medical infusion pump. IC Role / Device Role / Timing Role: Safety-critical nonvolatile memory; write-protected via PE pin during normal operation; accessed only during service mode. Use Value: Hardware PE pin provides deterministic, fail-safe write disable - satisfies IEC 62304 traceability requirements for memory protection. | Use Scenario: Retaining tariff schedules, metering constants, and communication keys in a DIN-rail smart electricity meter. IC Role / Device Role / Timing Role: Tamper-resistant configuration store; operates across –40°C to +85°C ambient with 2.5 V backup supply. Use Value: Extended temperature rating (–40°C to +125°C) and 2.5 V min VCC support enable reliable operation in unheated outdoor enclosures with capacitor-based backup. |
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/MC | Same pinout and functionality; rated for –40°C to +125°C (E grade) vs. I grade (–40°C to +85°C) of 93LC86CT-I/MC | Required for automotive under-hood or industrial high-temp environments exceeding +85°C | Select 93LC86CT-E/MC if operating ambient exceeds +85°C; otherwise 93LC86CT-I/MC is cost-optimized for standard industrial use. |
| AT25DF041A-MAU-T | Quad SPI interface, 4 Mbit density, no ORG/PE pins; requires different command set and hardware interface | Higher density and faster throughput, but incompatible protocol and no hardware write protection | Choose only if migrating to SPI-based architecture and accepting firmware redesign; not a drop-in replacement. |
Compared with 93LC86CT-E/MC, the 93LC86CT-I/MC offers identical functionality at lower temperature qualification cost; compared with AT25DF041A-MAU-T, it retains Microwire compatibility and hardware write-enable control but trades off density and speed for proven simplicity and robustness in legacy systems.
Availability
93LC86CT-I/MC is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLCs, medical infusion devices, and smart energy meters requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for 93LC86CT-I/MC 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 components, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 93LC86CT-I/MC belongs to Microchip's legacy 93XX serial EEPROM family, designed specifically for cost-sensitive, low-power embedded systems requiring simple 3-wire nonvolatile storage with hardware-configurable word size and robust data integrity features.
FAQ
What is the function of the ORG pin on the 93LC86CT-I/MC?
The ORG pin on the 93LC86CT-I/MC selects memory word organization: logic high configures the device as 1024 × 16-bit (x16), logic low configures it as 2048 × 8-bit (x8). This hardware-selectable mode eliminates firmware overhead for data alignment and allows one 93LC86CT-I/MC part number to serve both 8-bit and 16-bit host architectures without redesign.
How does the PE pin protect memory on the 93LC86CT-I/MC?
The PE (Program Enable) pin on the 93LC86CT-I/MC must be driven high to allow any erase or write operation; tying it low permanently disables all programming functions. Unlike software locks, this hardware-level protection remains active during power brown-outs or MCU resets, ensuring the 93LC86CT-I/MC memory array cannot be corrupted unintentionally.
Can the 93LC86CT-I/MC operate at 2.5 V across its full temperature range?
Yes, the 93LC86CT-I/MC is fully specified for 2.5 V to 5.5 V operation across its Industrial temperature range (–40°C to +85°C). At 2.5 V, maximum clock frequency is 2 MHz, and write cycle time increases to 5 ms - all parameters are guaranteed in the datasheet, making it suitable for battery-powered or low-voltage industrial applications.
What package type does the 'MC' suffix indicate for the 93LC86CT-I/MC?
The 'MC' suffix in 93LC86CT-I/MC denotes the 8-lead 2x3 mm DFN (Dual Flat No-lead) package with wettable flanks and an exposed thermal pad. This compact, surface-mount package supports automated optical inspection (AOI) and offers superior thermal performance versus SOIC, making it ideal for space-constrained PCB layouts in modern embedded designs.
Does the 93LC86CT-I/MC support sequential read mode?
Yes, the 93LC86CT-I/MC supports sequential read: when CS remains high after a READ instruction, the internal address counter automatically increments, and subsequent clock edges output the next memory location's data on DO. This eliminates the need to retransmit the opcode and address for each byte/word, significantly improving bulk read throughput in firmware implementations.
93LC86CT-I/MC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (2x3)
93LC86CT-I/MC FAQ
1.How can I place an order for 93LC86CT-I/MC through Aetrix?
Please submit a Request for Quotation (RFQ) for 93LC86CT-I/MC 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 93LC86CT-I/MC reliable?
The price and inventory of 93LC86CT-I/MC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 93LC86CT-I/MC is usually 5 days.
3.What payment methods are accepted for 93LC86CT-I/MC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 93LC86CT-I/MC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 93LC86CT-I/MC?
93LC86CT-I/MC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 93LC86CT-I/MC 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 93LC86CT-I/MC?
For technical support, including 93LC86CT-I/MC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 93LC86CT-I/MC requirements.
6.How does Aetrix verify that 93LC86CT-I/MC is sourced from the original manufacturer or authorized distributors?
All 93LC86CT-I/MC 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 93LC86CT-I/MC meets industry standards.
7.What is the process for return or replacement of 93LC86CT-I/MC?
All 93LC86CT-I/MC units undergo pre-shipment inspection (PSI). If there is an issue with 93LC86CT-I/MC, 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 93LC86CT-I/MC part is unused and in its original packaging.
Return procedure for 93LC86CT-I/MC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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