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Microchip Technology 93C86C/WF15K
- Part No.:
- 93C86C/WF15K
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- Die
- Datasheet:
-
93C86C/WF15K.pdf
- Description:
- IC EEPROM 16KBIT MICROWIRE DIE
- Quantity:
- Payment:
- Shipping:
Inventory:1,426
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Product details
Overview
93C86C/WF15K 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/automotive temperature support (–40°C to +125°C). It features self-timed erase/write cycles, automatic ERAL before WRAL, 1,000,000 endurance cycles, and >200-year data retention - deployed in automotive body control modules for calibration storage.
For engineers reviewing the 93C86C/WF15K datasheet, 93C86C/WF15K pinout, 93C86C/WF15K application, or 93C86C/WF15K equivalent, key selection considerations include VCC range (4.5–5.5 V), PE/ORG pin dependency for write-enable and word-size configuration, Ready/Busy status polling via DO, and compatibility with Microwire™-protocol masters in space-constrained embedded systems.
Technical Context
The 93C86C/WF15K implements a synchronous 3-wire Microwire interface (CS, CLK, DI/DO) with instruction-based memory access. Its dual-word-size capability is controlled exclusively by the external logic level on the ORG pin - high for x16 (1024 × 16), low for x8 (2048 × 8) - and requires PE = VCC to enable erase/write operations.
Internal state management includes power-on data protection, automatic ERAL prior to WRAL execution, and Ready/Busy status signaled via DO during self-timed programming (TWC = 2 ms for 93C versions). The device enters Standby mode when CS is low, drawing only 1–5 µA ICCS, and supports sequential read without address retransmission.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 16 Kbit (2048 × 8 or 1024 × 16, selectable via ORG pin) |
| VCC operating range | 4.5 V to 5.5 V - mandates stable 5 V rail; no operation below 3.8 V (VPOR threshold) |
| Write cycle time (TWC) | 2 ms - fixed self-timed duration for all erase/write operations (93C-series spec) |
| Endurance | 1,000,000 erase/write cycles - validated at 25°C, VCC = 5.0 V per characterization |
| Data retention | >200 years - guaranteed nonvolatile storage under rated temperature conditions |
| Interface protocol | Microwire™-compatible 3-wire serial (CS, CLK, DI/DO) - no SPI or I²C framing |
| Temperature grade | Industrial & Automotive (–40°C to +125°C) - qualified for under-hood automotive use |
Pinout & Package
8-lead SOIC (SN) package with Pb-free Matte Tin finish; pin 1 marked by laser dot. Pin functions are electrically and physically identical across SOIC, TSSOP, MSOP, DFN, and TDFN variants for this part number.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-high enable; must be held low ≥250 ns between instructions (TCSL); deselects device into Standby (ICCS ≤5 µA) |
| CLK | Serial Clock | Synchronizes opcode/address/data transfer on rising edge; stoppable mid-sequence; not required during self-timed write |
| DI | Data Input | Receives Start bit, opcodes, addresses, and write data; tied high with CS to initiate instruction sequence |
| DO | Data Output / Status | Outputs read data or Ready/Busy (low = busy, high = ready); tri-states on CS falling edge |
| VSS | Ground | Reference return path for all signals and internal circuitry |
| ORG | Organization select | Logic high → x16 mode (1024 words); logic low → x8 mode (2048 words); must be externally biased, not floating |
| PE | Program Enable | Must be high to permit EWEN, ERASE, WRITE, WRAL; low disables all programming permanently |
| VCC | Power supply | 4.5–5.5 V input; internal POR triggers at ~3.8 V; powers all logic and memory array |
Key Features
| Feature | Design Value |
|---|---|
| Word-size configurability | Hardware-selectable 8-bit or 16-bit organization via ORG pin - eliminates need for firmware rework when memory width changes |
| Hardware write protection | Dedicated PE pin enables system-level lockout of all erase/write functions - prevents corruption during power transients or firmware faults |
| Auto-erase-before-write | Self-timed erase integrated into every WRITE/WRAL cycle - ensures reliable programming without external erase command sequencing |
| Ready/Busy status signaling | DO pin doubles as status indicator during programming - enables polling-based timing control without fixed delays or timers |
| Power-on data protection | Internal voltage detect (VPOR ≈3.8 V) inhibits all operations until VCC stabilizes - prevents partial writes during brown-out |
Applications
| Automotive Body Control Unit (BCU) | Industrial PLC Configuration Storage |
|---|---|
Use Scenario: Storing seat/mirror position presets, door lock configurations, and lighting profiles in vehicle BCU modules. IC Role / Device Role / Timing Role: Nonvolatile parameter storage with fast random-access read and infrequent field-updatable calibration data. Use Value: PE pin allows hardware-enforced write-disable during vehicle runtime; ORG pin supports shared PCB design across 8-bit microcontroller and 16-bit MCU variants. | Use Scenario: Retaining I/O mapping tables, PID tuning constants, and alarm thresholds in modular PLC backplanes. IC Role / Device Role / Timing Role: Serial EEPROM interfaced to FPGA or ARM-based controller via Microwire bus for configuration persistence. Use Value: 2 ms write cycle and Ready/Busy polling reduce software overhead vs. fixed-delay implementations; 125°C rating supports convection-cooled enclosures. |
| Medical Infusion Pump Calibration | Smart Energy Meter Firmware Patch Storage |
Use Scenario: Holding flow-rate calibration coefficients and safety-critical dose limits updated during service calibration. IC Role / Device Role / Timing Role: Secure, tamper-resistant memory with hardware write-lock (PE) and power-fail-safe write abort. Use Value: >200-year data retention meets ISO 13485 long-term traceability requirements; ERAL+WRAL enables full memory reflash without host-side erase management. | Use Scenario: Storing field-deployed firmware patches and tariff schedule updates in utility-grade electricity meters. IC Role / Device Role / Timing Role: High-reliability serial EEPROM supporting remote over-the-air (OTA) update verification and rollback. Use Value: 1M endurance cycles accommodate frequent patch deployments over 15+ year meter lifetime; VCC=4.5–5.5 V matches meter's regulated 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; lacks 4.5–5.5 V optimization; same ORG/PE functionality and pinout | Better suited for mixed-voltage systems with 3.3 V logic; not qualified for 125°C automotive operation | Select if system operates below 4.5 V or requires extended low-VCC margin |
| AT25160B-MAHL-T | SPI interface (4-wire), no ORG/PE pins; 16 Kb capacity; 2.5–5.5 V; 125°C automotive grade | Requires SPI master instead of Microwire; no hardware word-size or write-enable control | Select if migrating to SPI architecture or needing higher clock frequency (20 MHz vs. 3 MHz max) |
Compared with 93LC86C-I/SN, the 93C86C/WF15K offers tighter VCC regulation tolerance and automotive thermal qualification; versus AT25160B-MAHL-T, it provides hardware-configurable word size and dedicated write-enable - critical for legacy Microwire designs and safety-critical write gating.
Availability
93C86C/WF15K is available at Aetrix Electronics and suitable for automotive electronics, industrial programmable logic controllers, and medical device calibration storage requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 93C86C/WF15K 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 devices, and memory solutions, serving automotive, industrial, and consumer markets with high-reliability silicon and development tools.
The 93Cxx series was designed specifically for cost-sensitive, low-power serial EEPROM applications requiring Microwire compatibility, hardware write protection, and robust operation in harsh environments - with the 93C86C/WF15K targeting 5 V automotive and industrial control systems.
FAQ
What is the function of the ORG pin on the 93C86C/WF15K?
The ORG pin on the 93C86C/WF15K selects memory word size: logic high configures 1024 × 16-bit organization, logic low configures 2048 × 8-bit organization. It must be externally biased to VCC or VSS - floating is prohibited. This hardware-selectable mode eliminates firmware changes when interfacing with different microcontroller data buses, and is exclusive to the 'C' variant family including the 93C86C/WF15K.
How does the PE pin protect memory on the 93C86C/WF15K?
The PE (Program Enable) pin on the 93C86C/WF15K must be driven high to allow any erase or write operation - including EWEN, ERASE, WRITE, and WRAL. When PE is low, all programming functions are permanently disabled regardless of VCC or instruction sequence. This hardware-level lock prevents accidental writes during power-up, brown-out, or firmware glitches, and is a defining feature of the 93C86C/WF15K versus 'A'/'B' variants.
What is the maximum clock frequency supported by the 93C86C/WF15K?
The 93C86C/WF15K supports a maximum clock frequency of 3 MHz when VCC is 4.5–5.5 V. At lower voltages (not applicable to this part, which requires ≥4.5 V), timing de-rates per AC specs - but the 93C86C/WF15K's specified VCC range ensures consistent 3 MHz operation. Exceeding this limit violates setup/hold timing (e.g., TDIS, TCKH) and risks instruction misreads or incomplete writes.
Does the 93C86C/WF15K require an external erase command before writing?
No - the 93C86C/WF15K performs automatic erase before each WRITE or WRAL operation. The self-timed cycle integrates erase and write into a single 2 ms TWC (program cycle time), eliminating the need for separate ERASE instructions. This behavior is inherent to the 93C-series architecture and applies identically across all 93C86C/WF15K units regardless of package or temperature grade.
What package type is used for the 93C86C/WF15K?
The 93C86C/WF15K is supplied in an 8-lead SOIC (Small Outline Integrated Circuit) package, designated SN per Microchip's packaging nomenclature. It features Pb-free Matte Tin finish, laser-marked pin 1 identification, and mechanical dimensions compliant with JEDEC MS-012. This package is pin-compatible with other 93C86C variants in SOIC, TSSOP, MSOP, DFN, and TDFN footprints.
93C86C/WF15K Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- Die
- Packaging:
- Tray
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Die
93C86C/WF15K FAQ
1.How can I place an order for 93C86C/WF15K through Aetrix?
Please submit a Request for Quotation (RFQ) for 93C86C/WF15K 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/WF15K reliable?
The price and inventory of 93C86C/WF15K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 93C86C/WF15K is usually 5 days.
3.What payment methods are accepted for 93C86C/WF15K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 93C86C/WF15K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 93C86C/WF15K?
93C86C/WF15K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 93C86C/WF15K 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/WF15K?
For technical support, including 93C86C/WF15K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 93C86C/WF15K requirements.
6.How does Aetrix verify that 93C86C/WF15K is sourced from the original manufacturer or authorized distributors?
All 93C86C/WF15K 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/WF15K meets industry standards.
7.What is the process for return or replacement of 93C86C/WF15K?
All 93C86C/WF15K units undergo pre-shipment inspection (PSI). If there is an issue with 93C86C/WF15K, 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/WF15K part is unused and in its original packaging.
Return procedure for 93C86C/WF15K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
93C86C/WF15K Tags
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