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Microchip Technology 93C86CT-I/SN
- Part No.:
- 93C86CT-I/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
93C86CT-I/SN.pdf
- Description:
- IC EEPROM 16KBIT MICROWIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,606
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Product details
Overview
93C86CT-I/SN from Microchip Technology Inc. is a 16 Kbit Microwire-compatible serial EEPROM with 8-bit organization, operating at 4.5–5.5 V, supporting Industrial temperature range (–40°C to +85°C), and packaged in 8-lead SOIC (SN). It delivers 1 million erase/write cycles, 200-year data retention, and integrated power-on/off data protection for embedded system configuration storage.
For engineers reviewing the 93C86CT-I/SN datasheet, 93C86CT-I/SN pinout, 93C86CT-I/SN application, or 93C86CT-I/SN equivalent, key selection considerations include its fixed 8-bit word size (no ORG pin), absence of PE/ORG pins, Microwire interface timing compliance, and suitability for low-power nonvolatile memory in space-constrained industrial control modules.
Technical Context
This device implements a synchronous 3-wire Microwire interface (CS, CLK, DI, DO) with self-timed erase/write cycles, automatic ERAL before WRAL, and Ready/Busy status polling via DO. It requires no external logic for word-size selection-unlike 'C' variants-and operates exclusively in x8 mode.
Power-on reset detection triggers at 3.8 V (VPOR), and all programming functions are inhibited below this threshold. The device powers up in EWDS (Erase/Write Disable) state, requiring explicit EWEN command prior to any WRITE or ERASE operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.5 V to 5.5 V - Ensures compatibility with 5 V legacy systems and rejects brown-out conditions below 4.5 V. |
| Memory Size | 16 Kbit (2048 × 8) - Provides sufficient space for firmware parameters, calibration data, or device ID storage in compact embedded nodes. |
| Endurance | 1,000,000 erase/write cycles - Supports frequent field-updatable configurations without premature wear-out. |
| Data Retention | >200 years at 25°C - Guarantees long-term reliability for unattended industrial deployments. |
| Max Clock Frequency | 3 MHz at VCC ≥ 4.5 V - Enables fast serial access while maintaining timing margin under full supply. |
| Write Cycle Time | 2 ms per byte - Determines minimum latency for configuration updates during runtime. |
| Standby Current | 1 µA (I-temp) - Minimizes quiescent power draw in battery-backed or energy-harvesting applications. |
Pinout & Package
8-lead SOIC package (SN), RoHS-compliant matte tin finish, 150-mil body width, standard JEDEC MS-012AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-high enable; must be held low ≥250 ns between instructions to reset internal logic. |
| CLK | Serial Clock | Synchronizes opcode/address/data transfer on rising edge; supports clock stretching and pause. |
| DI | Data Input | Accepts Start bit, instruction opcodes, addresses, and write data; no pull-up required. |
| DO | Data Output / Status | Outputs read data or Ready/Busy (low = busy); enters High-Z when CS is low. |
| VSS | Ground | Reference return path for all I/O and core logic; must be low-impedance. |
| VCC | Power Supply | 4.5–5.5 V input; internal POR circuit blocks operation below 3.8 V. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 8-bit organization | No ORG pin required-eliminates external configuration logic and PCB routing complexity. |
| Self-timed erase/write | Removes need for external timing control or watchdog timeout circuits during programming. |
| Automatic ERAL before WRAL | Ensures clean memory state before bulk writes, preventing partial-data corruption. |
| Power-on/off data protection | Hardware-level lockout prevents spurious writes during power ramp-up/down transients. |
| Industry-standard Microwire interface | Direct drop-in compatibility with existing Microwire controllers (e.g., PIC® MCU MSSP modules). |
Applications
| Industrial PLC Configuration Storage | Medical Device Calibration Data |
|---|---|
Use Scenario: Storing I/O mapping tables and user-defined logic parameters in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed infrequently but requiring guaranteed integrity across 10+ year service life. Use Value: 200-year data retention and 1M-cycle endurance ensure zero field failures due to EEPROM wear-out over product lifetime. | Use Scenario: Holding factory-calibrated sensor offsets and gain coefficients in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure, tamper-resistant parameter vault with hardware write-protection activated by power sequencing. Use Value: Power-on detect (3.8 V threshold) and automatic EWDS prevent accidental reprogramming during battery swaps or cold starts. |
| Automotive Body Control Module | Smart Energy Meter Firmware Settings |
Use Scenario: Saving seat/mirror position presets and lighting profiles in 12 V automotive subsystems. IC Role / Device Role / Timing Role: Low-quiescent-current (1 µA) memory backup during ignition-off periods. Use Value: Standby current spec validated at –40°C to +85°C ensures reliable operation across full automotive ambient range. | Use Scenario: Storing tariff schedules, meter IDs, and communication keys in utility-grade electricity meters. IC Role / Device Role / Timing Role: Tamper-evident configuration store with sequential read capability for secure firmware update verification. Use Value: Microwire protocol compliance enables direct interfacing with meter SoCs lacking SPI peripherals, reducing BOM count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 93LC86A-I/SN | Wider VCC range (2.5–5.5 V); same 2048×8 organization and SOIC-8 package. | Supports 2.5 V microcontrollers and mixed-voltage designs where 5 V rail is unavailable. | Select when system uses sub-4.5 V logic; verify timing margins at lower VCC (FCLK max = 2 MHz at 2.5–4.5 V). |
| AT25020B-MAHL-T | SPI interface (4-wire), 2 Kbit capacity, 1.8–5.5 V operation, same SOIC-8 footprint. | Lacks Microwire compatibility; requires SPI master and different instruction set. | Choose only if migrating from Microwire to SPI architecture; not a drop-in replacement for 93C86CT-I/SN. |
Compared with 93LC86A-I/SN and AT25020B-MAHL-T, the 93C86CT-I/SN offers strict 4.5–5.5 V operation ideal for legacy 5 V industrial systems, guaranteed Microwire timing at full speed, and no voltage-scaling trade-offs in endurance or retention.
Availability
93C86CT-I/SN is available at Aetrix Electronics and suitable for industrial control systems, medical diagnostics equipment, and automotive body electronics requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for 93C86CT-I/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, analog, and Flash-IP solutions, serving industrial, automotive, and consumer markets with high-reliability silicon and development tools.
The 93Cxx series targets cost-sensitive, low-power nonvolatile memory applications where Microwire compatibility, proven endurance, and industrial temperature operation are critical design requirements.
FAQ
What is the memory organization of the 93C86CT-I/SN?
The 93C86CT-I/SN is a fixed 2048 × 8-bit (16 Kbit) serial EEPROM. Unlike 'C' variants, it has no ORG pin and does not support 16-bit mode-its organization is permanently x8. This simplifies design by eliminating external configuration logic and guarantees deterministic addressing behavior across all units.
Does the 93C86CT-I/SN have a Program Enable (PE) pin?
No, the 93C86CT-I/SN does not include a PE pin. PE is exclusive to 'C' versions (e.g., 93C86C) and is absent on all 'A' and 'B' variants-including 93C86CT-I/SN. Programming is always enabled after issuing EWEN, and hardware write-protection relies solely on the EWEN/EWDS command sequence and VCC-based POR lockout.
What is the maximum clock frequency supported by the 93C86CT-I/SN?
The 93C86CT-I/SN supports up to 3 MHz clock frequency when VCC is 4.5 V or higher. At lower voltages (not applicable here, as its VCC range starts at 4.5 V), timing de-rates-however, within its specified 4.5–5.5 V range, 3 MHz is fully guaranteed per AC Characteristic Table A1, enabling fast configuration reads in time-critical boot sequences.
How does the 93C86CT-I/SN handle power loss during write operations?
The 93C86CT-I/SN incorporates hardware power-loss protection: its internal POR circuit disables all programming functions when VCC drops below 3.8 V (VPOR). Combined with automatic erase-before-write and self-timed cycles, this ensures no partial writes or corrupted data states occur-even during abrupt power interruption, preserving memory integrity.
Is the 93C86CT-I/SN compatible with standard SOIC-8 footprints?
Yes, the 93C86CT-I/SN uses the industry-standard 8-lead SOIC (SN) package per JEDEC MS-012AC, with 150-mil body width, 0.150" lead pitch, and matte tin (Pb-free) finish. It is mechanically and solder-reflow compatible with common SOIC-8 sockets, stencils, and automated assembly lines without adaptation.
93C86CT-I/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:
- 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-SOIC
93C86CT-I/SN FAQ
1.How can I place an order for 93C86CT-I/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 93C86CT-I/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 93C86CT-I/SN reliable?
The price and inventory of 93C86CT-I/SN 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/SN is usually 5 days.
3.What payment methods are accepted for 93C86CT-I/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 93C86CT-I/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 93C86CT-I/SN?
93C86CT-I/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 93C86CT-I/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 93C86CT-I/SN?
For technical support, including 93C86CT-I/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 93C86CT-I/SN requirements.
6.How does Aetrix verify that 93C86CT-I/SN is sourced from the original manufacturer or authorized distributors?
All 93C86CT-I/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 93C86CT-I/SN meets industry standards.
7.What is the process for return or replacement of 93C86CT-I/SN?
All 93C86CT-I/SN units undergo pre-shipment inspection (PSI). If there is an issue with 93C86CT-I/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 93C86CT-I/SN part is unused and in its original packaging.
Return procedure for 93C86CT-I/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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