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Microchip Technology 93C86CT-I/MC
- Part No.:
- 93C86CT-I/MC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-VFDFN Exposed Pad
- Datasheet:
-
93C86CT-I/MC.pdf
- Description:
- IC EEPROM 16KBIT MICROWIRE 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,230
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Product details
Overview
93C86CT-I/MC from Microchip Technology Inc. is a 16 Kbit Microwire-compatible serial EEPROM with 8-bit or 16-bit word-selectable organization, VCC range of 4.5–5.5 V, industrial temperature grade (–40°C to +85°C), and 8-lead 2x3 DFN package. It features Program Enable (PE) and ORG pins for write protection and memory configuration, and supports self-timed erase/write cycles with 1,000,000 endurance cycles. Used in embedded system configuration storage where compact nonvolatile memory with hardware write control is required.
For engineers reviewing the 93C86CT-I/MC datasheet, 93C86CT-I/MC pinout, 93C86CT-I/MC application, or 93C86CT-I/MC equivalent, key selection considerations include its 4.5–5.5 V supply compatibility, PE/ORG dual-control architecture, DFN-8 (2×3 mm) footprint, 2 ms program cycle time, and support for both x8/x16 configurations via external logic level on ORG.
Technical Context
The 93C86CT-I/MC implements a synchronous 3-wire Microwire interface (CS/CLK/DI/DO) with dedicated PE and ORG control inputs. Its internal architecture includes address decoding, mode logic, and output buffering, enabling sequential read, ERAL, WRAL, and status polling via DO pin. The device requires PE = high to initiate any write operation and uses ORG = high/low to select 16-bit/8-bit data width respectively.
It operates only within 4.5–5.5 V - below 3.8 V, power-on reset disables all operations. All programming commands (EWEN, WRITE, ERASE, WRAL, ERAL) are validated by clocked instruction sequences; Ready/Busy status is actively signaled on DO during erase/write, requiring CS reassertion after TCSL ≥ 250 ns to sample status.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.5 V to 5.5 V - defines strict supply rail requirement; operation disabled below 3.8 V per VPOR spec |
| Memory Size | 16 Kbit (2048 × 8 or 1024 × 16) - configurable word width enables flexible byte- or word-oriented firmware storage |
| Write Cycle Time | 2 ms - self-timed erase/write duration determines minimum command interval in real-time systems |
| Endurance | 1,000,000 erase/write cycles - supports frequent field-updatable parameter logging over product lifetime |
| Data Retention | >200 years - ensures long-term reliability of calibration or security keys without refresh |
| Interface | Microwire 3-wire serial (CS/CLK/DI/DO) - compatible with legacy microcontrollers lacking SPI hardware but supporting bit-banged timing |
| Temp Range | –40°C to +85°C (Industrial) - qualified for use in industrial control panels and automotive body electronics |
Pinout & Package
Package: 8-lead 2x3 mm DFN (MC), exposed pad (may be connected to VSS or left floating), RoHS-compliant matte tin finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-high enable; must remain low ≥250 ns between instructions; deselects device into standby but allows ongoing write completion |
| CLK | Serial Clock | Positive-edge synchronous timing for opcode/address/data; stoppable at any point; no clocks needed during self-timed write |
| DI | Data Input | Receives start bit, opcodes, addresses, and write data; shares signal path with DO in bus-shared designs (requires current-limiting resistor) |
| DO | Data Output / Status | Outputs read data or Ready/Busy status (low = busy); enters High-Z on CS falling edge; status valid only after CS reassertion post-TCSL |
| VSS | Ground | Reference return for all signals; exposed pad may be tied to VSS for thermal/mechanical stability |
| ORG | Organization Control | Logic-high selects 16-bit mode; logic-low selects 8-bit mode; must be statically driven - not floated |
| PE | Program Enable | Must be high to allow EWEN, WRITE, ERASE, WRAL, or ERAL; tied low permanently disables all writes - critical for field safety |
| VCC | Power Supply | 4.5–5.5 V only; internal POR circuit blocks operation below 3.8 V to prevent corruption during brownout |
Key Features
| Feature | Design Value |
|---|---|
| Hardware Write Protection | PE pin provides physical, always-on write disable - eliminates risk of accidental overwrite even during firmware bugs or noise events |
| Configurable Word Width | ORG pin enables runtime selection between 8-bit and 16-bit access - simplifies migration between 8-bit and 16-bit host MCUs without PCB change |
| Auto-Erase Before Write | Self-timed erase/write sequence guarantees data integrity - no external erase command needed before WRITE or WRAL |
| Ready/Busy Status Pin | DO pin doubles as status indicator - enables polling-based timing instead of fixed delays, reducing worst-case latency in time-critical systems |
| Power-On Data Protection | Internal voltage detector (VPOR = 3.8 V) inhibits all operations during power ramp - prevents partial writes during startup/shutdown |
Applications
| Industrial Sensor Calibration Storage | Automotive Body Control Module NVM |
|---|---|
Use Scenario: Storing factory-calibrated sensor offset/gain coefficients in programmable logic controllers and pressure transmitters. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed during boot and occasionally updated during maintenance. Use Value: PE pin allows permanent hardware lock after calibration, preventing field corruption; 200-year retention ensures data integrity across equipment lifecycle. | Use Scenario: Holding seat position memory, mirror presets, and lighting profiles in automotive door modules. IC Role / Device Role / Timing Role: Microwire EEPROM interfaced to 8-bit MCU with limited peripheral resources. Use Value: 4.5–5.5 V operation matches vehicle battery range; ORG pin supports same firmware across 8-bit and 16-bit variants; DFN-8 saves board space in tight module layouts. |
| Medical Device Configuration Backup | POS Terminal Security Key Storage |
Use Scenario: Preserving user-defined alarm thresholds and operational modes in portable diagnostic equipment. IC Role / Device Role / Timing Role: Low-power serial EEPROM powered from backup coin cell during main power loss. Use Value: 1 µA standby current (ICCS) extends battery life; industrial temp rating covers clinical environment variations; write-protection prevents tampering. | Use Scenario: Securing cryptographic keys and terminal ID in payment terminals subject to PCI PTS requirements. IC Role / Device Role / Timing Role: Tamper-resistant nonvolatile memory with hardware-enforced write disable. Use Value: PE pin tied low in production locks keys permanently; 1M endurance supports secure key rotation; RoHS compliance meets global regulatory mandates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 93C86CT-I/SN | Same electrical specs and pinout, but in 8-lead SOIC package (5.0 × 4.0 mm vs. DFN's 2.0 × 3.0 mm) | Preferred for through-hole prototyping or legacy board reuse where DFN reflow is unavailable | Select when manual assembly, socketing, or thermal mass tolerance is prioritized over size |
| 93LC86CT-I/MC | VCC range 2.5–5.5 V (wider), no PE pin, same DFN-8 package and ORG functionality | Suitable for battery-powered devices with brownout conditions below 4.5 V; lacks hardware write disable | Select when lower-voltage operation is mandatory and software-controlled write protection suffices |
Compared with 93C86CT-I/SN and 93LC86CT-I/MC, the 93C86CT-I/MC uniquely combines industrial-grade DFN packaging, strict 4.5–5.5 V operation for stable rail environments, and dual hardware controls (PE + ORG) - making it optimal for space-constrained, safety-critical, and voltage-stable embedded systems.
Availability
93C86CT-I/MC is available at Aetrix Electronics and suitable for industrial sensor calibration storage, automotive body control modules, medical device configuration backup, and POS terminal security key storage requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for 93C86CT-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 microcontroller, analog, and Flash-IP solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 93Cxx series was designed specifically for cost-sensitive, low-pin-count embedded systems requiring reliable, hardware-protected serial EEPROM - emphasizing robustness, Microwire compatibility, and flexible memory organization.
FAQ
What is the function of the PE pin on the 93C86CT-I/MC?
The PE (Program Enable) pin on the 93C86CT-I/MC must be held high to permit any write operation - including EWEN, WRITE, ERASE, WRAL, and ERAL. If PE is tied low, all programming functions are permanently inhibited, providing hardware-level write protection. This behavior is exclusive to 'C'-suffix variants like the 93C86CT-I/MC and is not present on 'A' or 'B' versions.
Can the 93C86CT-I/MC operate at 3.3 V?
No, the 93C86CT-I/MC cannot operate at 3.3 V. Its specified VCC range is strictly 4.5 V to 5.5 V. Below 3.8 V, the internal voltage detector (VPOR) disables all operations to prevent data corruption. For 3.3 V systems, consider the 93LC86CT-I/MC (2.5–5.5 V) - though it lacks the PE pin and has different endurance characteristics.
How does the ORG pin affect memory access in the 93C86CT-I/MC?
The ORG pin on the 93C86CT-I/MC selects memory organization: logic high configures 1024 × 16-bit (x16) mode; logic low configures 2048 × 8-bit (x8) mode. This changes instruction timing (22 vs. 29 clock cycles for READ), address width (11 vs. 10 bits), and data width per transaction - requiring matching host firmware configuration.
What package type is used for the 93C86CT-I/MC?
The 93C86CT-I/MC uses an 8-lead 2x3 mm DFN (Dual Flat No-lead) package, designated 'MC' in Microchip's packaging nomenclature. It features an exposed thermal pad that may be connected to VSS or left floating, and complies with Pb-free RoHS requirements using matte tin finish.
Is the 93C86CT-I/MC pin-compatible with the 93AA86CT-I/MC?
No, the 93C86CT-I/MC is not pin-compatible with the 93AA86CT-I/MC. While both use the 'MC' DFN-8 package, the 93AA86CT-I/MC lacks PE and ORG pins - those positions are NC (no connect). The 93C86CT-I/MC uses pins 6 and 7 for ORG and PE respectively; substituting either part without PCB revision will result in undefined or nonfunctional behavior.
93C86CT-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:
- 2ms
- Access Time:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (2x3)
93C86CT-I/MC FAQ
1.How can I place an order for 93C86CT-I/MC through Aetrix?
Please submit a Request for Quotation (RFQ) for 93C86CT-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 93C86CT-I/MC reliable?
The price and inventory of 93C86CT-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 93C86CT-I/MC is usually 5 days.
3.What payment methods are accepted for 93C86CT-I/MC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 93C86CT-I/MC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 93C86CT-I/MC?
93C86CT-I/MC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 93C86CT-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 93C86CT-I/MC?
For technical support, including 93C86CT-I/MC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 93C86CT-I/MC requirements.
6.How does Aetrix verify that 93C86CT-I/MC is sourced from the original manufacturer or authorized distributors?
All 93C86CT-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 93C86CT-I/MC meets industry standards.
7.What is the process for return or replacement of 93C86CT-I/MC?
All 93C86CT-I/MC units undergo pre-shipment inspection (PSI). If there is an issue with 93C86CT-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 93C86CT-I/MC part is unused and in its original packaging.
Return procedure for 93C86CT-I/MC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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