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Microchip Technology 93C86C-I/SN
- Part No.:
- 93C86C-I/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
93C86C-I/SN.pdf
- Description:
- IC EEPROM 16KBIT MICROWIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:700
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Product details
Overview
93C86C-I/SN from Microchip Technology Inc. is a 16 Kbit Microwire-compatible serial EEPROM with user-selectable 8-bit or 16-bit word organization via the ORG pin, program enable (PE) write protection, and industrial temperature range (–40°C to +85°C). It features self-timed erase/write cycles, automatic ERAL before WRAL, and power-on/off data protection - deployed in embedded control systems for parameter storage and calibration retention.
For engineers reviewing the 93C86C-I/SN datasheet, 93C86C-I/SN pinout, 93C86C-I/SN application, or 93C86C-I/SN equivalent, key selection criteria include VCC range (4.5–5.5 V), PE/ORG pin dependency for write enable and word size configuration, 2 ms erase/write cycle time, and compatibility with 3-wire Microwire™ interfaces in space-constrained industrial controllers.
Technical Context
The 93C86C-I/SN implements a synchronous serial interface using CS, CLK, DI, and DO signals with start-bit detection and opcode-driven command execution. Its dual-organization architecture (x8/x16) is controlled solely by the logic level on the ORG pin, while the PE pin must be driven high to permit any erase or write operation - both pins are absent on A/B variants.
Internal timing is fully self-timed: ERAL requires ≥4.5 V and completes in 6 ms; WRAL includes auto-ERAL and finishes in 15 ms; standard WRITE and ERASE execute in 2 ms. Ready/Busy status is reported via DO pin polling during active programming, with TCSL ≥250 ns required between instructions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8 or 1024 × 16, selected by ORG pin) |
| VCC Range | 4.5 V to 5.5 V - defines minimum operating voltage for reliable ERAL/WRAL and disables all operations below 3.8 V |
| Write Cycle Time | 2 ms - maximum self-timed duration for single-address WRITE or ERASE, enabling deterministic firmware timeout handling |
| Endurance | 1,000,000 erase/write cycles - supports long-life field calibration updates in industrial equipment |
| Data Retention | 200 years at 25°C - ensures nonvolatile storage integrity across product lifecycle without refresh |
| Interface Protocol | Microwire™-compatible 3-wire serial (CS/CLK/DI/DO) - enables direct connection to legacy microcontrollers with dedicated Microwire peripherals |
| Temperature Range | –40°C to +85°C (Industrial grade) - qualified for deployment in factory automation and motor drive control environments |
Pinout & Package
8-pin SOIC (SN) package with 150 mil width, Pb-free Matte Tin finish, and standard 0.157" lead pitch. Pin 1 marked by laser dot; pin 1 ID corner matches JEDEC MS-012AA outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-high enable: must be held low ≥250 ns between commands; deselects device into standby but allows ongoing write completion |
| CLK | Serial Clock | Synchronizes all data transfers on rising edge; clock can be paused mid-sequence without state loss |
| DI | Data Input | Receives start bit, opcodes, addresses, and write data; tolerant of bus-sharing with DO when series resistor used |
| DO | Data Output / Status | Outputs read data or Ready/Busy (low = busy); enters High-Z on CS falling edge |
| VSS | Ground | Reference return path for all I/O and internal circuitry; must be low-impedance |
| ORG | Organization Control | Logic-high → x16 mode (1024 words); logic-low → x8 mode (2048 words); must be statically tied, not floated |
| PE | Program Enable | Must be high to execute EWEN, ERASE, WRITE, WRAL, or ERAL; tied low for full write protection |
| VCC | Power Supply | 4.5–5.5 V only; internal POR triggers at ~3.8 V - prevents spurious writes during brown-out |
Key Features
| Feature | Design Value |
|---|---|
| ORG pin word-size selection | Enables single-device reuse across 8-bit and 16-bit host data buses without hardware change |
| PE pin write protection | Hardware-level lockout of all erase/write functions - eliminates software-only vulnerability to accidental overwrites |
| Auto-ERAL before WRAL | Guarantees clean memory state prior to bulk write, removing need for separate ERAL command in initialization sequences |
| Power-on/off data protection | Internal circuitry inhibits writes when VCC < 3.8 V, preventing corruption during power ramp-up/down |
| Ready/Busy status on DO | Allows polling-based firmware flow control without external interrupt lines or timers |
Applications
| Motor Drive Parameter Storage | Industrial PLC Configuration Backup |
|---|---|
Use Scenario: Storing calibrated current limits, PID coefficients, and fault thresholds in brushless DC motor controllers. IC Role / Device Role / Timing Role: Nonvolatile parameter register accessed during boot and runtime via Microwire interface; ORG set to x16 for efficient coefficient loading. Use Value: Enables field-upgradable tuning without firmware reflash; 200-year retention ensures calibration survives 10+ year equipment life. | Use Scenario: Preserving ladder logic configuration, I/O mapping, and alarm setpoints in modular programmable logic controllers. IC Role / Device Role / Timing Role: Standalone configuration EEPROM interfaced to PLC's main MCU; PE held high only during commissioning. Use Value: Survives power loss during runtime; 1M endurance supports daily backup cycles over 27 years. |
| Smart Sensor Calibration Data | Embedded Power Supply Trim Settings |
Use Scenario: Holding multi-point temperature compensation tables and offset/gain trims for MEMS pressure sensors. IC Role / Device Role / Timing Role: Read-on-power-up memory for sensor signal conditioning ASIC; ORG = x8 for byte-aligned trim values. Use Value: Eliminates factory calibration rework - trims stored once and retained across thermal cycling and vibration. | Use Scenario: Storing digitally trimmed output voltage/current setpoints and protection thresholds in isolated DC-DC modules. IC Role / Device Role / Timing Role: Secure configuration store accessed only during manufacturing test; PE tied low permanently after programming. Use Value: Prevents post-deployment tampering; 4.5–5.5 V VCC range aligns with module's internal 5 V rail. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 93LC86C-I/SN | VCC range 2.5–5.5 V; supports extended temperature (–40°C to +125°C); identical pinout and instruction set | Required for automotive-grade designs or mixed-voltage systems with 3.3 V hosts | Select when wider supply range or AEC-Q100 compliance is needed; otherwise 93C86C-I/SN offers tighter VCC spec for 5 V-only systems |
| AT25160B-SSHL-T | SPI interface (4-wire), 5 V tolerant, 16 Kbit x8 only, no ORG/PE pins; 5 ms write cycle | Used where SPI-native microcontrollers eliminate need for Microwire support or dual-word-size flexibility | Choose for SPI-based designs prioritizing vendor availability over Microwire compatibility or hardware write protection |
Compared with 93LC86C-I/SN, the 93C86C-I/SN trades extended VCC tolerance for stricter 4.5–5.5 V operation and excludes automotive temp grade - simplifying power design in fixed 5 V systems. Versus AT25160B-SSHL-T, it retains Microwire compatibility and hardware-configurable word size but lacks SPI ubiquity.
Availability
93C86C-I/SN is available at Aetrix Electronics and suitable for industrial motor drives, programmable logic controllers, smart sensor modules, and embedded power supplies requiring stable component supply and long-term obsolescence management.
Supply support for 93C86C-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, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 93Cxx family was designed specifically for cost-sensitive, low-power serial EEPROM applications in industrial and consumer systems requiring robust nonvolatile storage with hardware-controlled security and flexible data organization.
FAQ
What is the function of the ORG pin on the 93C86C-I/SN?
The ORG pin on the 93C86C-I/SN selects memory word size: logic high configures 1024 × 16-bit organization, logic low configures 2048 × 8-bit organization. This pin is absent on 93C86A/B variants and must be statically tied - floating is prohibited. The 93C86C-I/SN uses this pin to maintain backward compatibility across host data bus widths without changing firmware or PCB layout.
How does the PE pin affect write operations in the 93C86C-I/SN?
The PE (Program Enable) pin on the 93C86C-I/SN must be driven high to allow any erase or write command (EWEN, ERASE, WRITE, WRAL, ERAL) to execute. When PE is low, all programming functions are inhibited regardless of EWEN state. This hardware lock complements software-based EWEN/EWDS commands and is mandatory for secure configuration storage in the 93C86C-I/SN.
What is the minimum VCC required for reliable operation of the 93C86C-I/SN?
The 93C86C-I/SN requires VCC ≥ 4.5 V for full functionality and guarantees proper operation of ERAL and WRAL commands. Internal power-on reset activates at ~3.8 V, disabling all write operations below that threshold to prevent data corruption. Operation outside the 4.5–5.5 V range is undefined and may result in failed programming or inconsistent status reporting on the 93C86C-I/SN.
Can the 93C86C-I/SN be used with a 3.3 V microcontroller?
No - the 93C86C-I/SN is specified only for 4.5–5.5 V operation and is not 3.3 V compatible. Its input thresholds (VIH1 = 2.0 V min, VIL1 = 0.8 V max) and internal POR (~3.8 V) make reliable interfacing with 3.3 V logic unsafe. For 3.3 V systems, use 93LC86C-I/SN (2.5–5.5 V) instead; the 93C86C-I/SN requires a 5 V supply and level-shifting if coexisting with 3.3 V hosts.
What is the purpose of the Ready/Busy status on the DO pin of the 93C86C-I/SN?
The DO pin of the 93C86C-I/SN serves dual purpose: during READ, it outputs data bits; during ERASE/WRITE/WRAL/ERAL, it reports Ready/Busy status - low indicates active programming, high indicates completion. This enables firmware to poll status without timers or interrupts. The 93C86C-I/SN requires CS to be brought high for ≥250 ns after TCSL before status becomes valid on DO.
93C86C-I/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:
- 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
93C86C-I/SN FAQ
1.How can I place an order for 93C86C-I/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 93C86C-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 93C86C-I/SN reliable?
The price and inventory of 93C86C-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 93C86C-I/SN is usually 5 days.
3.What payment methods are accepted for 93C86C-I/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 93C86C-I/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 93C86C-I/SN?
93C86C-I/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 93C86C-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 93C86C-I/SN?
For technical support, including 93C86C-I/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 93C86C-I/SN requirements.
6.How does Aetrix verify that 93C86C-I/SN is sourced from the original manufacturer or authorized distributors?
All 93C86C-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 93C86C-I/SN meets industry standards.
7.What is the process for return or replacement of 93C86C-I/SN?
All 93C86C-I/SN units undergo pre-shipment inspection (PSI). If there is an issue with 93C86C-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 93C86C-I/SN part is unused and in its original packaging.
Return procedure for 93C86C-I/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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