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Microchip Technology 93C86C-I/P
- Part No.:
- 93C86C-I/P
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
93C86C-I/P.pdf
- Description:
- IC EEPROM 16KBIT MICROWIRE 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:576
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Product details
Overview
93C86C-I/P from Microchip Technology 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/WRAL, 1,000,000 endurance cycles, and >200-year data retention. Used in microcontroller configuration storage and calibration data retention in embedded control systems.
For engineers reviewing the 93C86C-I/P datasheet, 93C86C-I/P pinout, 93C86C-I/P application, or 93C86C-I/P equivalent, key selection considerations include VCC range (4.5–5.5 V), ORG/PE pin dependency for memory configuration and write enable, Ready/Busy status polling via DO, and compatibility with legacy Microwire host controllers requiring CS/CLK/DI/DO timing compliance per DS21797L.
Technical Context
The 93C86C-I/P implements a synchronous 3-wire Microwire interface with start-bit detection, opcode-driven instruction set (READ, WRITE, ERASE, WRAL, EWEN/EWDS), and dual-word-size memory mapping controlled by the external ORG pin logic level. Its internal state machine manages auto-erase-before-write and status reporting via DO pin during active programming.
Write operations require PE = VCC and are gated by EWEN command; power-on defaults to EWDS mode. VCC voltage detect threshold is 3.8 V, disabling all operations below that level - a critical design constraint for brown-out immunity in 5 V systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.5 V to 5.5 V - defines minimum system rail stability required before enabling write operations or reliable read access |
| Memory Size | 16 Kbit (2048 × 8 or 1024 × 16) - selectable via ORG pin; determines address width (11-bit vs 10-bit) and data bus alignment in host firmware |
| Endurance | 1,000,000 erase/write cycles - supports frequent field calibration updates without premature wear-out |
| Data Retention | >200 years at 25°C - ensures long-term validity of stored configuration or serial numbers across product lifetime |
| Write Cycle Time | 2 ms (TWC) - sets minimum inter-write interval; impacts real-time logging throughput in host software |
| Max Clock Frequency | 3 MHz at VCC ≥ 4.5 V - constrains maximum SPI-like bit rate; requires host controller to meet tCKH/tCKL timing (200 ns/100 ns) |
| Operating Temp | –40°C to +85°C (Industrial) - qualifies for use in non-automotive industrial enclosures without thermal derating |
Pinout & Package
8-pin PDIP (P package), through-hole, 0.3-inch body width. Pin 1 marked by notch or dot; pin 1 ID confirmed by laser mark per DS21797L-page 18.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-high enable; must be held low ≥250 ns between instructions; deselects device into standby but allows ongoing write completion |
| CLK | Serial Clock | Rising-edge synchronized I/O; clocking may pause mid-transfer; no clocks required during self-timed write cycle |
| DI | Data Input | Accepts start bit, opcode, address, and data; must be stable before first CLK rising edge after CS high |
| DO | Data Output / Status | Tri-state output: delivers read data or Ready/Busy (low = busy); transitions to High-Z on CS falling edge |
| VSS | Ground | Reference for all digital and analog circuitry; must be low-impedance connection to minimize noise coupling |
| ORG | Organization Select | Logic high = 16-bit mode (x16), logic low = 8-bit mode (x8); must be hardwired before initialization; not sampled dynamically |
| PE | Program Enable | Write gate: PE = VCC enables EWEN/WRITE/ERAL/WRAL; PE = VSS blocks all writes regardless of EWEN state |
| VCC | Power Supply | 4.5–5.5 V only; internal POR triggers at 3.8 V - operation prohibited below this threshold |
Key Features
| Feature | Design Value |
|---|---|
| ORG-pin word-size selection | Enables single BOM support for both 8-bit and 16-bit host data paths without hardware change - reduces inventory complexity |
| PE-pin hardware write protection | Provides fail-safe, always-active write disable independent of firmware state - prevents corruption during power transients or code faults |
| Auto-erase-before-write | Eliminates need for separate ERASE command before WRITE, simplifying driver code and reducing command overhead |
| ERAL and WRAL self-timed commands | Enables full-array erase or fill in one atomic operation (6 ms / 15 ms), avoiding multi-cycle host loops and improving reliability |
| Ready/Busy polling via DO | Allows host to avoid fixed delays or timers - improves system responsiveness and eliminates unnecessary wait states |
Applications
| Industrial PLC Configuration Storage | Medical Device Calibration Data |
|---|---|
Use Scenario: Storing I/O module mapping, PID loop parameters, and alarm thresholds in programmable logic controllers operating in factory environments. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed infrequently during commissioning or maintenance; supports sequential read for fast parameter dump. Use Value: 1M endurance ensures 10+ years of reconfiguration cycles; >200-year retention guarantees parameter integrity across equipment lifetime without battery backup. | Use Scenario: Holding sensor offset/gain coefficients and regulatory audit logs in portable diagnostic instruments subject to periodic recalibration. IC Role / Device Role / Timing Role: Secure, tamper-resistant storage with hardware write lock (PE pin) preventing accidental overwrites during field service. Use Value: PE = VSS disables writes even if firmware is compromised; WRAL enables rapid factory reset of all calibration data in ≤15 ms. |
| Automotive Body Control Module Settings | Consumer Appliance User Preferences |
Use Scenario: Saving seat/mirror position memory, lighting profiles, and door lock behavior in 12 V automotive systems with transient-suppressed 5 V rails. IC Role / Device Role / Timing Role: EEPROM interfaced to 8-bit MCU via Microwire; uses VCC detect (3.8 V) to inhibit writes during cranking-induced brownouts. Use Value: Brown-out protection prevents partial writes during voltage dips; industrial temp rating covers under-hood ambient extremes when mounted near ECU. | Use Scenario: Retaining cooking presets, language selection, and child-lock state across power cycles in smart ovens and washing machines. IC Role / Device Role / Timing Role: Low-power serial EEPROM accessed during boot; standby current ≤5 µA extends battery life in backup RTC circuits. Use Value: 5 µA ICCS at VCC = 5 V minimizes quiescent drain; Pb-free RoHS compliance meets global appliance safety certifications. |
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/P | VCC range 2.5–5.5 V; same pinout, ORG/PE pins, and instruction set; lower brown-out threshold (1.5 V) | Supports wider supply range including 3.3 V systems; unsuitable for strict 5 V-only designs where 3.8 V POR is required | Select 93LC86C-I/P only if host operates down to 2.5 V and brown-out immunity at 3.8 V is not needed |
| 93AA86C-I/P | VCC range 1.8–5.5 V; identical ORG/PE functionality; higher endurance margin at low VCC | Enables direct integration into ultra-low-power 1.8 V MCUs; lacks 5 V-specific timing optimizations of 93C86C | Choose 93AA86C-I/P when extending battery life in portable devices or supporting mixed-voltage subsystems |
Compared with 93LC86C-I/P and 93AA86C-I/P, the 93C86C-I/P provides tighter 5 V timing (3 MHz clock), deterministic 3.8 V POR behavior, and optimized write performance for legacy 5 V industrial controllers - making it the preferred choice where supply stability and brown-out robustness are prioritized over multi-voltage flexibility.
Availability
93C86C-I/P is available at Aetrix Electronics and suitable for industrial control systems, medical instrumentation, automotive body electronics, and consumer appliance designs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 93C86C-I/P 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 93Cxx family was designed specifically for cost-sensitive, low-power serial EEPROM applications in industrial and automotive systems requiring robust Microwire protocol compatibility, hardware write protection, and extended data retention - distinguishing it from SPI or I²C EEPROM alternatives.
FAQ
What is the function of the ORG pin on the 93C86C-I/P?
The ORG pin on the 93C86C-I/P selects memory word size: tied to VCC for 16-bit (1024 × 16) organization, or to VSS for 8-bit (2048 × 8) organization. This pin is static - its logic level must be established before device initialization and cannot be changed dynamically during operation. The 93C86C-I/P does not support runtime reconfiguration of word size.
How does the PE pin affect write operations in the 93C86C-I/P?
The PE (Program Enable) pin on the 93C86C-I/P acts as a hardware gate for all write functions: only when PE = VCC can EWEN, WRITE, ERASE, ERAL, or WRAL commands execute. If PE = VSS, all erase/write operations are blocked regardless of EWEN state. The 93C86C-I/P datasheet explicitly prohibits floating PE - it must be hardwired to VCC or VSS.
What is the minimum VCC required for the 93C86C-I/P to operate correctly?
The 93C86C-I/P requires VCC ≥ 4.5 V for full specification compliance and has a power-on reset (POR) threshold of 3.8 V. Below 3.8 V, all internal operations - including reads, writes, and status polling - are inhibited. This differs from 93AA86C/93LC86C variants and is a defining characteristic of the 'C' suffix in the 93Cxx series.
Can the 93C86C-I/P be used with a 3.3 V microcontroller?
No - the 93C86C-I/P is specified only for VCC = 4.5 V to 5.5 V and will not function reliably at 3.3 V. Its absolute minimum operating voltage is 4.5 V, and its POR threshold is 3.8 V. For 3.3 V systems, consider the 93LC86C-I/P (2.5–5.5 V) or 93AA86C-I/P (1.8–5.5 V), which share the same pinout and ORG/PE functionality but different voltage ratings.
What does the "I/P" suffix indicate in the 93C86C-I/P part number?
The "I/P" suffix in 93C86C-I/P denotes Industrial temperature grade (–40°C to +85°C) and 8-pin PDIP package. "I" specifies the operating temperature range, and "P" is Microchip's package code for plastic dual in-line package. This matches the marking "I/P" shown in DS21797L-page 13 packaging examples and confirms through-hole mounting compatibility.
93C86C-I/P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
93C86C-I/P FAQ
1.How can I place an order for 93C86C-I/P through Aetrix?
Please submit a Request for Quotation (RFQ) for 93C86C-I/P 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/P reliable?
The price and inventory of 93C86C-I/P 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/P is usually 5 days.
3.What payment methods are accepted for 93C86C-I/P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 93C86C-I/P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 93C86C-I/P?
93C86C-I/P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 93C86C-I/P 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/P?
For technical support, including 93C86C-I/P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 93C86C-I/P requirements.
6.How does Aetrix verify that 93C86C-I/P is sourced from the original manufacturer or authorized distributors?
All 93C86C-I/P 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/P meets industry standards.
7.What is the process for return or replacement of 93C86C-I/P?
All 93C86C-I/P units undergo pre-shipment inspection (PSI). If there is an issue with 93C86C-I/P, 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/P part is unused and in its original packaging.
Return procedure for 93C86C-I/P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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