My Inquiry
My Account
Microchip Technology 93LC86CT-E/SN
- Part No.:
- 93LC86CT-E/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
93LC86CT-E/SN.pdf
- Description:
- IC EEPROM 16KBIT MICROWIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,963
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
93LC86CT-E/SN from Microchip Technology is a 16 Kbit Microwire-compatible serial EEPROM with 8-bit organization, operating across 2.5–5.5 V supply and rated for automotive temperature range (−40°C to +125°C). It features self-timed erase/write cycles, automatic ERAL before WRAL, power-on/off data protection, and industry-standard 3-wire serial I/O - used in engine control units, ADAS sensor calibration storage, and automotive infotainment configuration memory.
For engineers reviewing the 93LC86CT-E/SN datasheet, 93LC86CT-E/SN pinout, 93LC86CT-E/SN application, or 93LC86CT-E/SN equivalent, key selection criteria include its automotive-grade temperature support, ORG-pin absence (fixed 8-bit mode), PE pin write-protection capability, 1 M endurance cycles, and SOIC-8 package compatibility with legacy PCB footprints.
Technical Context
This device implements a synchronous 3-wire Microwire interface (CS/CLK/DI/DO) with no internal address counter reset on CS low - enabling sequential read across memory pages. Its fixed 8-bit organization ('T' suffix denotes 'A' variant) eliminates ORG pin dependency, simplifying layout versus C-versions.
Write operations require prior EWEN command activation and logic-high PE pin assertion; DO pin provides Ready/Busy status polling during erase/write. Power-on reset circuitry holds writes inhibited until VCC exceeds 2.5 V, ensuring robust boot-time data integrity in automotive power rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 16 Kbit (2048 × 8-bit organization) |
| Supply voltage | 2.5–5.5 V - supports 3.3 V and 5 V systems without level shifters |
| Temperature grade | Automotive (−40°C to +125°C) - qualified per AEC-Q100 stress test requirements |
| Endurance | 1,000,000 erase/write cycles - enables frequent firmware parameter updates in telematics modules |
| Data retention | 200 years at +85°C - ensures calibration data persistence over vehicle lifetime |
| Interface | Microwire-compatible 3-wire serial (CS, CLK, DI, DO) - interoperable with PIC® MCU SPI peripherals in 3-wire mode |
| Write cycle time | 5 ms typical (TWC) - deterministic timing for real-time ECU configuration saves |
| Standby current | 1 µA max at 2.5 V - critical for always-on battery-backed automotive subsystems |
Pinout & Package
8-lead SOIC (SN) package with standard 150-mil width and 1.27 mm pitch; RoHS-compliant matte tin finish. 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 instructions to reset internal state |
| CLK | Serial Clock | Rising-edge synchronized I/O; clock can pause mid-transfer without corruption |
| DI | Data Input | Accepts Start bit, opcode, address, and data; high-impedance when CS low |
| DO | Data Output / Status | Tri-state output delivering read data or Ready/Busy (low = busy) during programming |
| VSS | Ground | Reference for all digital and analog functions; requires low-inductance connection to minimize noise |
| VCC | Power Supply | 2.5–5.5 V input; internal POR circuit blocks writes below 2.5 V threshold |
| PE | Program Enable | Write-protection control: logic high enables erase/write; tied low disables all programming permanently |
| NC | No Connect | Pin 6 is unassigned - left floating or grounded per board layout; not bonded internally |
Key Features
| Feature | Design Value |
|---|---|
| Self-timed erase/write | Eliminates external timing components and software delay loops - reduces BOM and firmware complexity |
| Automatic ERAL before WRAL | Guarantees full-array erase prior to bulk write, preventing stale data remnants in automotive safety-critical logs |
| Power-on/off data protection | Hardware-enforced write inhibition during brown-out conditions - prevents corruption during ignition cycling |
| Ready/Busy status via DO | Enables non-blocking polling instead of fixed delays - improves real-time response in ECU boot sequences |
| Pb-free SOIC-8 (SN) | Drop-in replacement for legacy 93LC86A parts; compatible with standard reflow profiles and AOI inspection |
| 100% tested AC/DC parameters | Ensures guaranteed timing margins at −40°C/+125°C - no derating required for under-hood deployment |
Applications
| Engine Control Unit (ECU) Trim Storage | ADAS Camera Calibration Data |
|---|---|
Use Scenario: Storing fuel injection timing offsets and air-fuel ratio trims updated during vehicle learning cycles. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed via PIC MCU's Microwire peripheral during idle periods. Use Value: Enables field-updatable calibration without requiring flash reprogramming - reduces service downtime and recall risk. | Use Scenario: Retaining lens distortion coefficients and pixel mapping tables for forward-facing collision avoidance cameras. IC Role / Device Role / Timing Role: Dedicated Microwire slave storing factory-calibrated coefficients read at camera power-up. Use Value: Maintains sub-pixel accuracy across thermal cycling; 200-year retention exceeds vehicle design life. |
| Infotainment System UI Settings | Body Control Module (BCM) Configuration |
Use Scenario: Preserving user preferences (volume, display brightness, language) across ignition cycles. IC Role / Device Role / Timing Role: Low-power serial EEPROM interfaced to ARM-based head unit SoC via GPIO-banged Microwire. Use Value: 1 µA standby current extends battery backup runtime; 5 ms write time enables fast save-on-exit behavior. | Use Scenario: Holding door lock logic states, window auto-up thresholds, and lighting fade profiles. IC Role / Device Role / Timing Role: Automotive-qualified memory mapped to LIN or CAN gateway microcontroller for secure configuration access. Use Value: AEC-Q100 qualification ensures reliability in high-vibration chassis environments; PE pin prevents accidental overwrite during diagnostics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 93LC86CT-I/SN | Industrial temp range (−40°C to +85°C); identical electrical specs and pinout | Not qualified for under-hood or powertrain use; unsuitable for AEC-Q100-requiring systems | Select only for cabin-only applications where ambient temperature stays ≤85°C |
| AT25128AN-10SU-2.7 | SPI interface (4-wire), 128 Kbit capacity, 2.7–5.5 V operation; no PE or ORG pins | Larger memory and faster clock (20 MHz) but lacks hardware write-protection and automotive temp rating | Choose when higher bandwidth or capacity is needed and PE-based security is not required |
Compared with 93LC86CT-I/SN, the 93LC86CT-E/SN adds automotive temperature qualification and AEC-Q100 alignment; compared with AT25128AN-10SU-2.7, it trades SPI speed and density for Microwire compatibility, hardware write-enable control, and guaranteed −40°C to +125°C operation.
Availability
93LC86CT-E/SN is available at Aetrix Electronics and suitable for automotive electronics, engine management systems, and ADAS sensor modules requiring stable component supply with long-term lifecycle assurance.
Supply support for 93LC86CT-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.
The 93LC86 series belongs to Microchip's legacy Microwire EEPROM product line, designed specifically for cost-sensitive, low-power automotive and industrial control applications requiring simple 3-wire serial nonvolatile storage.
FAQ
What is the memory organization of the 93LC86CT-E/SN?
The 93LC86CT-E/SN is an 'A' variant device with fixed 2048 × 8-bit organization - no ORG pin is present or required. This differs from 'C' variants which use the ORG pin to select between 8-bit and 16-bit modes. The 'T' suffix confirms the 8-bit configuration, making the 93LC86CT-E/SN pin-compatible and functionally identical to other 93LC86A automotive-grade parts in SOIC-8 packaging.
Does the 93LC86CT-E/SN require external pull-up resistors on its I/O lines?
The 93LC86CT-E/SN does not require external pull-ups on CS, CLK, or DI for basic operation, as these inputs have CMOS-compatible thresholds. However, a 10 kΩ pull-down resistor on CS is recommended per Microchip application guidance to prevent spurious start conditions during power-up. DO is tri-stated and may need a pull-up if shared on a bidirectional bus, though dedicated DO routing is preferred for noise immunity in automotive environments.
How is write protection implemented on the 93LC86CT-E/SN?
Write protection on the 93LC86CT-E/SN is implemented via the PE (Program Enable) pin: tying PE to VCC enables erase/write operations, while tying PE to VSS permanently disables all programming - even after issuing EWEN. Unlike software-only locks, this hardware-level disable cannot be overridden by command sequence, providing tamper-resistant configuration storage for safety-critical automotive parameters stored in the 93LC86CT-E/SN.
What is the maximum clock frequency supported by the 93LC86CT-E/SN at 3.3 V?
At VCC = 3.3 V (within the 2.5–4.5 V range), the 93LC86CT-E/SN supports a maximum clock frequency of 2 MHz per Table 1-2 (A1). This is confirmed by AC specification A1: "2 MHz" for 2.5 V ≤ VCC < 4.5 V. Exceeding this frequency risks setup/hold violations on DI and DO, especially at temperature extremes; therefore, 2 MHz is the validated maximum for robust operation across the full −40°C to +125°C automotive range of the 93LC86CT-E/SN.
Can the 93LC86CT-E/SN be used in place of a 93LC86B device?
No - the 93LC86CT-E/SN is an 8-bit organization ('A' variant) device, while the 93LC86B is a 16-bit organization ('B' variant) with different instruction encoding, address depth (1024 × 16), and incompatible read/write data widths. Substituting them would cause data misalignment and command rejection. The 93LC86CT-E/SN is only directly interchangeable with other 93LC86A or 93LC86C devices configured for 8-bit mode (ORG = 0), not with 'B' variants.
93LC86CT-E/SN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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
93LC86CT-E/SN FAQ
1.How can I place an order for 93LC86CT-E/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 93LC86CT-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 93LC86CT-E/SN reliable?
The price and inventory of 93LC86CT-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 93LC86CT-E/SN is usually 5 days.
3.What payment methods are accepted for 93LC86CT-E/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 93LC86CT-E/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 93LC86CT-E/SN?
93LC86CT-E/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 93LC86CT-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 93LC86CT-E/SN?
For technical support, including 93LC86CT-E/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 93LC86CT-E/SN requirements.
6.How does Aetrix verify that 93LC86CT-E/SN is sourced from the original manufacturer or authorized distributors?
All 93LC86CT-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 93LC86CT-E/SN meets industry standards.
7.What is the process for return or replacement of 93LC86CT-E/SN?
All 93LC86CT-E/SN units undergo pre-shipment inspection (PSI). If there is an issue with 93LC86CT-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 93LC86CT-E/SN part is unused and in its original packaging.
Return procedure for 93LC86CT-E/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
93LC86CT-E/SN Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
