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Microchip Technology 93LC86C-E/SN
- Part No.:
- 93LC86C-E/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
93LC86C-E/SN.pdf
- Description:
- IC EEPROM 16KBIT MICROWIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:620
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Product details
Overview
93LC86C-E/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, 2.5–5.5 V supply range, and integrated Program Enable (PE) pin for full-array write protection. It delivers 1 million erase/write cycles, >200-year data retention, and Ready/Busy status signaling-used in industrial sensor calibration storage and automotive body control modules.
For engineers reviewing the 93LC86C-E/SN datasheet, 93LC86C-E/SN pinout, 93LC86C-E/SN application, or 93LC86C-E/SN equivalent, key selection factors include VCC operating range (2.5–5.5 V), dual-word-size configurability (x8/x16), PE-enabled hardware write protection, -40°C to +125°C automotive temperature grade, and SOIC-8 package compatibility with legacy Microwire systems.
Technical Context
The 93LC86C-E/SN implements a synchronous 3-wire Microwire interface (CS, CLK, DI/DO) with self-timed erase/write cycles and automatic ERAL before WRAL. Its dual-organization architecture requires external logic on the ORG pin to select between 1024 × 16-bit or 2048 × 8-bit memory mapping.
Write enable is gated by both EWEN command execution and high-level assertion on the dedicated PE pin; programming is inhibited if PE = VSS. The DO pin serves dual function: serial data output during READ and Ready/Busy status indicator during erase/write operations when CS is reasserted after ≥250 ns low time.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 16 Kbit (1024 × 16 or 2048 × 8, selected by ORG pin) |
| VCC range | 2.5 V to 5.5 V - supports wide-input industrial and automotive power rails |
| Endurance | 1,000,000 erase/write cycles - enables frequent field updates in telemetry loggers |
| Data retention | >200 years at 25°C - ensures long-term calibration data integrity without refresh |
| Temperature grade | -40°C to +125°C (Automotive E-grade) - qualified for under-hood and chassis-mounted use |
| Interface | Microwire-compatible 3-wire serial (CS/CLK/DI/DO) - interoperable with legacy microcontrollers lacking SPI hardware |
| Write protection | Dual-layer: software (EWEN/EWDS) + hardware (PE pin) - prevents accidental overwrites during brown-out or firmware faults |
Pinout & Package
8-pin SOIC (SN) package with standard 150-mil width, RoHS-compliant matte tin finish, and Pb-free construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-high enable; device enters Standby mode when low, but completes ongoing write cycle |
| CLK | Serial Clock | Synchronizes all data transfers on rising edge; clock-stoppable during instruction framing |
| DI | Data Input | Receives Start bit, opcodes, addresses, and write data; must be stable before first CLK rise after CS high |
| DO | Data Output / Status | Outputs read data or Ready/Busy (low = busy); enters High-Z when CS low or during non-read states |
| VSS | Ground | Reference for all I/O and internal circuitry; must be low-impedance connection |
| ORG | Organization Select | High = 1024 × 16-bit; Low = 2048 × 8-bit; must be hardwired, not floated |
| PE | Program Enable | High = write enabled; Low = entire array write-protected - critical for fail-safe firmware storage |
| VCC | Power Supply | 2.5–5.5 V input; internal POR triggers at ~1.5 V; powers all logic and memory cells |
Key Features
| Feature | Design Value |
|---|---|
| Word-size configurability | Hardware-selectable x8/x16 organization via ORG pin eliminates need for firmware rework across memory-width variants |
| Hardware write protection | Dedicated PE pin provides unconditional physical disable of all write/erase functions - immune to software crashes or bus glitches |
| Auto-erase before write | Self-timed erase integrated into every WRITE/WRAL cycle - guarantees clean page writes without separate erase command overhead |
| Ready/Busy polling | DO pin asserts low during erase/write; enables precise timing control without fixed delays or interrupt dependency |
| Power-on/off data protection | Internal circuitry inhibits all operations below VCC threshold (~1.5 V) - prevents corruption during power ramp-up/down |
Applications
| Engine Control Unit Calibration Storage | Industrial Sensor Linearization Table |
|---|---|
Use Scenario: Storing trim coefficients and lookup tables updated during vehicle production line calibration and dealer-level reprogramming. IC Role / Device Role / Timing Role: Nonvolatile parameter storage with hardware write lock (PE = VSS) during normal engine runtime to prevent corruption from ECU reset events. Use Value: Eliminates need for external write-protection logic; 1M endurance supports lifetime recalibration cycles; -40°C to +125°C rating matches under-hood thermal profile. | Use Scenario: Holding factory-trimmed compensation curves for pressure, temperature, and humidity sensors in programmable transmitters. IC Role / Device Role / Timing Role: Microwire-compatible serial EEPROM interfaced to 8-bit microcontroller for post-manufacturing calibration data loading and field updates. Use Value: Dual-word organization allows efficient storage of 16-bit sensor coefficients; auto-erase/write simplifies firmware; SOIC-8 footprint eases PCB layout reuse. |
| Automotive Body Control Module Settings | Medical Infusion Pump Configuration Memory |
Use Scenario: Retaining user preferences (window position, mirror angle, lighting profiles) across ignition cycles in BCMs. IC Role / Device Role / Timing Role: Low-power serial EEPROM accessed during BCM boot sequence; standby current ≤5 µA extends battery life during vehicle sleep mode. Use Value: 2.5 V minimum VCC supports start-stop system operation; >200-year retention ensures data survival over vehicle lifetime; PE pin prevents inadvertent overwrite during CAN bus noise events. | Use Scenario: Storing safety-critical dosage limits, alarm thresholds, and calibration offsets that must survive power loss and meet IEC 62304 Class C requirements. IC Role / Device Role / Timing Role: Fail-safe nonvolatile memory with hardware write lock (PE tied to system enable signal) and verified 1M-cycle endurance for audit trail logging. Use Value: Dual-layer protection (PE + EWEN) satisfies traceability and anti-tamper requirements; automotive temp grade validates reliability in sterilized enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 93LC86B-E/SN | Fixed 16-bit organization (no ORG pin); no PE pin - write protection only via EWEN/EWDS commands | Lacks hardware write lock; unsuitable where physical fault isolation from firmware is required | Select when x16-only memory map suffices and software-controlled protection meets safety requirements |
| AT25128B-MAHL-T | SPI interface (not Microwire); 128 Kbit capacity; no ORG/PE pins; operates down to 1.7 V | Requires SPI-capable host; larger memory but incompatible protocol and pinout | Select when migrating to SPI infrastructure and higher density is needed; not drop-in compatible |
Compared with 93LC86B-E/SN, the 93LC86C-E/SN adds hardware write lock and word-size flexibility; compared with AT25128B-MAHL-T, it retains Microwire compatibility and automotive-grade reliability at lower density but with deterministic PE-based safety enforcement.
Availability
93LC86C-E/SN is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor calibration systems, and medical infusion pump configuration storage requiring stable component supply across extended product lifecycles.
Supply support for 93LC86C-E/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 microcontrollers, analog components, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 93LCxx family was designed specifically for cost-sensitive, low-power, Microwire-based nonvolatile storage in automotive and industrial applications where hardware write protection and wide VCC range are mandatory.
FAQ
What is the function of the ORG pin on the 93LC86C-E/SN?
The ORG pin on the 93LC86C-E/SN selects memory organization: tied to VCC for 1024 × 16-bit mode, or to VSS for 2048 × 8-bit mode. This hardware-configurable feature allows one 93LC86C-E/SN part number to serve two distinct memory-width system architectures without firmware changes. The ORG state must be stable before CS activation and cannot be floated.
How does the PE pin protect memory on the 93LC86C-E/SN?
The PE (Program Enable) pin on the 93LC86C-E/SN provides hardware-level write inhibition: when PE = VSS, all erase and write operations are blocked regardless of EWEN command state or VCC level. This failsafe mechanism prevents corruption during power transients, EMI events, or firmware errors. PE must be hardwired - floating is prohibited per datasheet Section 3.6.
What is the maximum clock frequency supported by the 93LC86C-E/SN at 3.3 V?
At VCC = 3.3 V (within 2.5–4.5 V range), the 93LC86C-E/SN supports a maximum clock frequency of 2 MHz per Table 1-2 (Param. A1). This is confirmed by the AC specification: FCLK ≤ 2 MHz for 2.5 V ≤ VCC < 4.5 V. Exceeding this limit risks setup/hold violations and unreliable opcode decoding.
Does the 93LC86C-E/SN require an external pull-up resistor on the DO pin?
No, the 93LC86C-E/SN does not require an external pull-up on DO. The DO pin has active drive capability during READ and Ready/Busy status reporting. However, if DI and DO are shorted (common-bus configuration), a series resistor is recommended to prevent bus conflict during the dummy-zero phase - per Section 2.2, "Data In/Data Out (DI/DO)".
What packaging options are available for the 93LC86C-E/SN?
Per the Device Selection Table and Package Types diagram, the 93LC86C-E/SN is offered in SOIC-8 (SN), PDIP-8 (P), TSSOP-8 (ST), MSOP-8 (MS), DFN-8 (MC), and TDFN-8 (MN) packages. The "-E/SN" suffix explicitly denotes the Automotive-grade (-E) version in SOIC-8 (SN) packaging, with matte tin finish and Pb-free compliance.
93LC86C-E/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:
- 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:
- 5ms
- Access Time:
- -
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
93LC86C-E/SN FAQ
1.How can I place an order for 93LC86C-E/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 93LC86C-E/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 93LC86C-E/SN reliable?
The price and inventory of 93LC86C-E/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 93LC86C-E/SN is usually 5 days.
3.What payment methods are accepted for 93LC86C-E/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 93LC86C-E/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 93LC86C-E/SN?
93LC86C-E/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 93LC86C-E/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 93LC86C-E/SN?
For technical support, including 93LC86C-E/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 93LC86C-E/SN requirements.
6.How does Aetrix verify that 93LC86C-E/SN is sourced from the original manufacturer or authorized distributors?
All 93LC86C-E/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 93LC86C-E/SN meets industry standards.
7.What is the process for return or replacement of 93LC86C-E/SN?
All 93LC86C-E/SN units undergo pre-shipment inspection (PSI). If there is an issue with 93LC86C-E/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 93LC86C-E/SN part is unused and in its original packaging.
Return procedure for 93LC86C-E/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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