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Microchip Technology 93LC86A-E/SN
- Part No.:
- 93LC86A-E/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
93LC86A-E/SN.pdf
- Description:
- IC EEPROM 16KBIT MICROWIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,521
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Product details
Overview
The 93LC86A-E/SN from Microchip Technology Inc. is a 16 Kbit (2048 × 8-bit) low-voltage serial EEPROM with Microwire-compatible 3-wire interface, operating from 2.5 V to 5.5 V, rated for automotive temperature range (−40°C to +125°C), and featuring 1,000,000 erase/write cycles and >200-year data retention. It is used in engine control units, airbag modules, and automotive infotainment systems for calibration storage and configuration backup.
For engineers reviewing the 93LC86A-E/SN datasheet, 93LC86A-E/SN pinout, 93LC86A-E/SN application, or 93LC86A-E/SN equivalent, key selection criteria include its automotive-grade temperature support, dedicated 8-bit organization (no ORG pin), absence of PE/ORG pins, industry-standard Microwire timing compliance, and SOIC-8 package compatibility with legacy PCB layouts.
Technical Context
This device implements a synchronous serial interface using CS, CLK, and DI/DO lines with start-bit detection and opcode-based command execution. It supports READ, WRITE, ERASE, ERAL, WRAL, EWEN, and EWDS instructions with self-timed erase/write cycles and automatic ERAL before WRAL.
Power-on/off data protection is enforced via internal voltage monitoring (VPOR = 1.5 V typical), and Ready/Busy status is signaled on DO during programming-requiring CS reassertion after TCSL ≥250 ns to sample status. No ORG or PE pins are present, fixing memory organization to 2048 × 8-bit and enabling write operations without external enable logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 16 Kbit (2048 × 8-bit); fixed x8 organization eliminates need for ORG pin routing or configuration logic |
| VCC range | 2.5 V to 5.5 V; supports direct connection to 3.3 V or 5 V automotive rails without level-shifting |
| Temp grade | Automotive (E): −40°C to +125°C; qualified for under-hood and safety-critical ECUs |
| Endurance | 1,000,000 erase/write cycles; enables frequent recalibration logging in telematics or ADAS subsystems |
| Data retention | >200 years at 25°C; ensures firmware configuration integrity over full vehicle lifetime |
| Interface | Microwire-compatible 3-wire serial (CS/CLK/DI/DO); interoperable with legacy microcontrollers lacking SPI hardware |
| Write time | 5 ms max (TWC); deterministic latency for time-constrained boot-time parameter loading |
| Standby current | 1 µA (I-temp), 5 µA (E-temp); minimizes quiescent power in always-on vehicle networks |
Pinout & Package
8-pin SOIC (SN) package with standard 150-mil body width and 1.27 mm pitch; RoHS-compliant matte tin finish; pin 1 marked by laser dot or bevelled corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 CS | Chip Select | Active-high enable; must be held low ≥250 ns between commands; deselects device into 1–5 µA standby mode |
| 2 CLK | Serial Clock | Positive-edge synchronized I/O clock; supports up to 3 MHz at 4.5–5.5 V; stoppable mid-transfer |
| 3 DI | Data Input | Accepts start bit, opcodes, addresses, and write data; high-impedance when not selected |
| 4 DO | Data Output / Status | Outputs read data or Ready/Busy (low = busy); enters High-Z on CS falling edge |
| 5 VSS | Ground | Reference return path for all signals; requires low-inductance connection to minimize noise coupling |
| 6 - | No connect | Not bonded; no internal connection; must remain unconnected per datasheet |
| 7 - | No connect | Not bonded; no internal connection; must remain unconnected per datasheet |
| 8 VCC | Power Supply | 2.5–5.5 V supply; includes internal POR circuit triggering at ~1.5 V to block writes during brownout |
Key Features
| Feature | Design Value |
|---|---|
| Self-timed erase/write | Eliminates external timing control; 5 ms max cycle time ensures predictable firmware update latency |
| Auto-ERAL before WRAL | Guarantees clean array state before bulk write; removes need for separate erase command in calibration reset sequences |
| Ready/Busy polling via DO | Enables non-blocking host firmware operation; avoids fixed delays and improves system responsiveness |
| Power-on/off data protection | Hardware-enforced write inhibition below 1.5 V; prevents corruption during ignition cycling or battery transients |
| 16 Kbit x8 organization | Dedicated byte-addressable layout simplifies driver development and reduces address calculation overhead in 8-bit MCUs |
| Pb-free SOIC-8 (SN) | Standard footprint compatible with existing automotive assembly lines and reflow profiles |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
Use Scenario: Storing fuel map coefficients, knock sensor calibration offsets, and adaptive learning values that must survive ignition cycles and battery disconnects. IC Role / Device Role / Timing Role: Nonvolatile configuration storage with guaranteed write integrity during cranking-induced voltage dips. Use Value: 1.5 V POR threshold and 1M-cycle endurance ensure reliable parameter updates across 15+ year vehicle service life. | Use Scenario: Retaining camera alignment parameters, radar object classification thresholds, and sensor fusion weights across power-down events. IC Role / Device Role / Timing Role: Low-power, high-reliability data logger for safety-critical calibration data requiring >200-year retention. Use Value: Automotive temperature rating (−40°C to +125°C) and 5 µA standby current enable operation in sealed radar housings without active cooling. |
| Automotive Infotainment | Body Control Module (BCM) |
Use Scenario: Saving user preferences (volume, equalizer, display brightness), radio station presets, and Bluetooth pairing keys. IC Role / Device Role / Timing Role: Serial EEPROM interfaced directly to 8-bit MCU via Microwire, avoiding SPI resource contention. Use Value: 3-wire interface reduces GPIO count; 2048 × 8-bit layout matches byte-oriented MCU data structures without packing overhead. | Use Scenario: Holding door lock actuator timing profiles, window auto-up/down thresholds, and lighting fade curves. IC Role / Device Role / Timing Role: Configuration memory accessed during wake-up from low-power sleep mode. Use Value: 1 µA standby current (I-temp) and 5 µA (E-temp) minimize battery drain in always-on CAN nodes during vehicle rest state. |
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 | 1024 × 16-bit organization; same VCC/temp/package; no ORG/PE pins | Requires 16-bit MCU data path or software word-splitting; incompatible with byte-addressed drivers | Select only if system architecture mandates 16-bit word access and firmware supports dual-byte addressing |
| AT25160B-MAHL-T | SPI interface (4-wire), 2 MHz max clock, 1.8–5.5 V, SOIC-8, same density and endurance | Requires SPI peripheral instead of Microwire; different instruction set and status reporting (WIP flag in status register) | Choose when migrating to SPI-based platforms or needing faster 2 MHz clock vs. Microwire's 3 MHz at 5 V |
Compared with 93LC86B-E/SN, the 93LC86A-E/SN provides native byte-level access without address translation, reducing firmware complexity; versus AT25160B-MAHL-T, it retains Microwire compatibility for legacy 8-bit microcontrollers lacking SPI hardware but trades off slightly higher minimum VCC (2.5 V vs. 1.8 V).
Availability
The 93LC86A-E/SN is available at Aetrix Electronics and suitable for automotive ECU design, ADAS calibration storage, and body control module development requiring stable component supply across extended production lifecycles.
Supply support for 93LC86A-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 devices, and memory solutions, headquartered in Chandler, Arizona, with global manufacturing and support infrastructure.
The 93LC86A-E/SN belongs to Microchip's legacy 93XX serial EEPROM family, designed specifically for cost-sensitive, space-constrained automotive and industrial applications requiring robust nonvolatile storage with minimal external components.
FAQ
What is the memory organization of the 93LC86A-E/SN?
The 93LC86A-E/SN has a fixed 2048 × 8-bit (16 Kbit) organization. Unlike 'C' variants, it lacks an ORG pin and is permanently configured for byte-wide access-no external logic or configuration is required to select word size.
Does the 93LC86A-E/SN support the Program Enable (PE) pin function?
No, the 93LC86A-E/SN does not include a PE pin. Programming is always enabled, and write protection relies solely on the EWEN/EWDS instruction sequence-not hardware pin control. This differs from 93LC86C variants which require PE = VCC for writes.
What is the maximum clock frequency supported by the 93LC86A-E/SN at 3.3 V operation?
At VCC = 3.3 V (within 2.5–4.5 V range), the 93LC86A-E/SN supports a maximum clock frequency of 2 MHz. This is specified in Table 1-2 (A1), where FCLK ≤ 2 MHz applies for 2.5 V ≤ VCC < 4.5 V.
How does the 93LC86A-E/SN indicate readiness after a write operation?
The 93LC86A-E/SN signals readiness via the DO pin: after initiating a WRITE or ERASE command, bring CS high for ≥250 ns (TCSL), then sample DO-low indicates busy, high indicates completion. The device remains in High-Z when CS is low.
Is the 93LC86A-E/SN pin-compatible with other 93XX86 variants in SOIC-8 package?
Yes, the 93LC86A-E/SN shares identical SOIC-8 (SN) pinout with all 93XX86A/B/C variants-including 93LC86B-E/SN and 93LC86C-E/SN-though functional differences exist (e.g., missing ORG/PE pins on 'A' versions). PCB layout reuse is possible, but firmware must match the specific variant's instruction set and organization.
93LC86A-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:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 16Kbit
- Memory Organization:
- 2K x 8
- 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
93LC86A-E/SN FAQ
1.How can I place an order for 93LC86A-E/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 93LC86A-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 93LC86A-E/SN reliable?
The price and inventory of 93LC86A-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 93LC86A-E/SN is usually 5 days.
3.What payment methods are accepted for 93LC86A-E/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 93LC86A-E/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 93LC86A-E/SN?
93LC86A-E/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 93LC86A-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 93LC86A-E/SN?
For technical support, including 93LC86A-E/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 93LC86A-E/SN requirements.
6.How does Aetrix verify that 93LC86A-E/SN is sourced from the original manufacturer or authorized distributors?
All 93LC86A-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 93LC86A-E/SN meets industry standards.
7.What is the process for return or replacement of 93LC86A-E/SN?
All 93LC86A-E/SN units undergo pre-shipment inspection (PSI). If there is an issue with 93LC86A-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 93LC86A-E/SN part is unused and in its original packaging.
Return procedure for 93LC86A-E/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
93LC86A-E/SN Tags
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