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Microchip Technology 93LC86T/SN
- Part No.:
- 93LC86T/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
93LC86T/SN.pdf
- Description:
- IC EEPROM 16KBIT MICROWIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,808
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Product details
Overview
93LC86T/SN from Microchip Technology Inc. is a 16-kbit Microwire-compatible serial EEPROM with configurable x8/x16 organization via the ORG pin, 2.5–6.0V single-supply operation, and industrial temperature range (–40°C to +85°C). It delivers 1 mA typical active current, 5 µA standby current at 3.0V, and supports self-timed erase/write cycles with automatic ERAL before WRAL - used for nonvolatile parameter storage in embedded microcontroller systems.
For engineers reviewing the 93LC86T/SN datasheet, 93LC86T/SN pinout, 93LC86T/SN application, or 93LC86T/SN equivalent, key selection criteria include its 8-pin SOIC package, 3 MHz max clock frequency at VCC ≥ 4.5V, 1M endurance cycles, >200-year data retention, and support for sequential read and status polling via DO pin during programming.
Technical Context
The 93LC86T/SN implements a synchronous 3-wire Microwire interface (CS, CLK, DI/DO) with start-bit detection and opcode-driven command execution. Memory organization is dynamically selected: ORG = VCC enables 1024 × 16-bit mode (16K), while ORG = VSS selects 2048 × 8-bit mode (16K), both yielding identical total capacity but differing address/data widths.
It features hardware-level data protection including power-on/off inhibit circuitry (active below 1.4V), Program Enable (PE) pin for write-locking, and EWEN/EWDS commands to gate erase/write access. All programming operations - READ, WRITE, ERASE, ERAL, WRAL - are self-timed and expose Ready/Busy status on DO when CS remains high.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 16 kbit (2048 × 8 or 1024 × 16), enabling compact firmware parameter or calibration storage |
| Supply voltage | 2.5V to 6.0V - supports direct interfacing with 3.3V and 5V MCU I/O without level shifters |
| Max clock frequency | 3 MHz at VCC ≥ 4.5V; 2 MHz at 2.5V ≤ VCC < 4.5V - defines maximum serial throughput in host-controlled timing |
| Write endurance | 1,000,000 erase/write cycles - ensures long-term reliability in field-updatable systems |
| Data retention | >200 years at 25°C - guarantees persistent storage across product lifecycle without refresh |
| Operating temperature | –40°C to +85°C (Industrial grade) - validated for automotive body control, industrial sensors, and outdoor equipment |
| Active current | 1 mA typical at 5.5V - minimizes power impact during configuration reads/writes in battery-backed systems |
Pinout & Package
8-pin SOIC package (150 mil body width), surface-mount compatible, with standard lead pitch and RoHS-compliant finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-high enable; must be held low ≥250 ns between instructions; initiates standby mode when deasserted |
| CLK | Serial Clock | Synchronizes all data transfers; rising edge clocks in opcode/address/data; stoppable mid-sequence |
| DI | Data Input | Accepts start bit, instruction opcodes, addresses, and write data; shares net with DO in bidirectional mode |
| DO | Data Output / Status | Outputs read data or Ready/Busy status (low = busy); enters high-Z when CS goes low |
| VSS | Ground | Reference return path for all signals and internal logic; must be low-impedance connection |
| ORG | Organization Select | Configures memory as 2048×8 (ORG=VSS) or 1024×16 (ORG=VCC); internal pull-up defaults to x16 |
| PE | Program Enable | Enables write access when high/floating; disables all erase/write if tied to VSS; internal pull-up active |
| VCC | Power Supply | 2.5–6.0V supply; powers internal logic, charge pump, and I/O buffers; includes brown-out protection |
Key Features
| Feature | Design Value |
|---|---|
| Self-timed erase/write | Eliminates need for external timing control - WRAL completes in ≤30 ms, ERAL in ≤15 ms, WRITE/ERASE in ≤5 ms per word |
| Automatic ERAL before WRAL | Guarantees full-array erase prior to bulk write, preventing partial-data corruption without host software intervention |
| Power-on/off data protection | Hardware blocks all programming when VCC < 1.4V - prevents inadvertent writes during power ramp-up/down |
| Sequential read mode | Enables continuous burst reads with CS held high and uninterrupted CLK - reduces transaction overhead for block fetches |
| Status polling via DO | Allows host MCU to monitor programming progress without dedicated interrupt lines - DO low = busy, high = ready |
Applications
| Industrial Sensor Calibration | Consumer Remote Control ID Storage |
|---|---|
Use Scenario: Storing factory-calibrated sensor offset/gain coefficients and temperature compensation tables in HVAC controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed at system boot and during field recalibration routines. Use Value: Enables traceable, field-upgradable calibration without requiring MCU code changes or external programming fixtures. |
Use Scenario: Holding unique device identifiers and IR protocol mapping tables in universal remote controls. IC Role / Device Role / Timing Role: Low-power serial configuration store read once per power cycle and updated only during pairing. Use Value: Supports multi-brand compatibility and user-customizable button assignments with zero standby current draw. |
| Automotive Body Control Module | Medical Infusion Pump Settings |
Use Scenario: Retaining user preferences (window position, mirror angle, seat memory) and fault log history in vehicle BCMs. IC Role / Device Role / Timing Role: Parameter backup memory interfaced directly to 8-bit MCU SPI/Microwire peripheral. Use Value: Meets AEC-Q100 stress requirements via industrial temp rating and 1M-cycle endurance for 15+ year service life. |
Use Scenario: Storing drug library parameters, dose limits, and audit trail timestamps in Class II medical infusion pumps. IC Role / Device Role / Timing Role: Safety-critical configuration store with write-protection via PE pin and power-fail write inhibit. Use Value: Ensures regulatory compliance by preventing accidental overwrites during power transients or ESD events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 93LC86C/SN | Same pinout and instruction set; enhanced reliability with updated process and extended qualification testing | Recommended for new designs per Microchip DS21131F page 1; identical functional behavior but improved wafer-level robustness | Select 93LC86C/SN for production releases requiring long-term supply assurance and latest characterization data |
| AT25160B-MAU-10 | SPI interface (4-wire), 16K-bit capacity, 2.5–5.5V supply, 20 MHz max clock; no ORG pin or WRAL/ERAL commands | Lacks bulk-erase/write and organization flexibility; requires different MCU driver and PCB layout due to extra SI/SO pins | Choose only if existing design uses SPI peripherals exclusively and does not require auto-ERAL or x8/x16 reconfiguration |
Compared with 93LC86T/SN, the 93LC86C/SN offers identical functionality with improved manufacturing consistency, while the AT25160B-MAU-10 trades Microwire simplicity and dual-organization flexibility for higher-speed SPI throughput and broader vendor availability - requiring firmware and layout revisions.
Availability
93LC86T/SN is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive body control modules, medical device configuration storage, and consumer remote control ID storage requiring stable component supply across extended product lifecycles.
Supply support for 93LC86T/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 U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and nonvolatile memory solutions for embedded applications.
The 93LC86T/SN belongs to Microchip's legacy Microwire EEPROM product line, designed specifically for cost-sensitive, low-pin-count systems needing reliable, low-power serial configuration storage with minimal MCU resource usage.
FAQ
What is the function of the ORG pin on the 93LC86T/SN?
The ORG pin on the 93LC86T/SN selects memory organization: tied to VCC it configures the device as 1024 × 16-bit (x16), and tied to VSS as 2048 × 8-bit (x8). An internal pull-up defaults to x16 mode when ORG is left unconnected. This allows one 93LC86T/SN part number to serve two distinct data-width interfaces without changing hardware layout.
Does the 93LC86T/SN support sequential read operations?
Yes, the 93LC86T/SN supports sequential read: when CS remains high and clock transitions continue after a READ instruction, the internal address pointer automatically increments and outputs consecutive memory locations. This eliminates the need to reissue READ commands for block data retrieval, reducing host MCU overhead and improving throughput efficiency in the 93LC86T/SN.
How does the 93LC86T/SN protect against unintended writes during power transitions?
The 93LC86T/SN incorporates hardware power-on/off data protection that inhibits all erase/write operations when VCC falls below or rises above 1.4V. This ensures no spurious writes occur during brown-out conditions or power ramping. Additionally, the PE pin and EWEN/EWDS commands provide software-configurable write locking - critical for safe operation of the 93LC86T/SN in unstable power environments.
What is the maximum clock frequency supported by the 93LC86T/SN at 3.3V supply?
At VCC = 3.3V (within the 2.5V–4.5V range), the 93LC86T/SN supports a maximum clock frequency of 2 MHz, as specified in Table 1-2 of DS21131F. This limit ensures reliable setup/hold timing for DI and proper DO output delay (TPD ≤ 250 ns) under worst-case voltage and temperature conditions for the 93LC86T/SN.
Can the 93LC86T/SN be used as a direct replacement for the 93LC76T/SN?
No, the 93LC86T/SN is not a direct replacement for the 93LC76T/SN: it provides 16 kbit capacity (vs. 8 kbit), requiring updated address handling in host firmware. While pinout, interface, and instruction set are identical, the larger memory depth changes address bit count (11-bit vs. 10-bit in x8 mode) and alters timing margins - validation is required before substitution in an existing 93LC76T/SN design.
93LC86T/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 ~ 6.0V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
93LC86T/SN FAQ
1.How can I place an order for 93LC86T/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 93LC86T/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 93LC86T/SN reliable?
The price and inventory of 93LC86T/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 93LC86T/SN is usually 5 days.
3.What payment methods are accepted for 93LC86T/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 93LC86T/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 93LC86T/SN?
93LC86T/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 93LC86T/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 93LC86T/SN?
For technical support, including 93LC86T/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 93LC86T/SN requirements.
6.How does Aetrix verify that 93LC86T/SN is sourced from the original manufacturer or authorized distributors?
All 93LC86T/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 93LC86T/SN meets industry standards.
7.What is the process for return or replacement of 93LC86T/SN?
All 93LC86T/SN units undergo pre-shipment inspection (PSI). If there is an issue with 93LC86T/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 93LC86T/SN part is unused and in its original packaging.
Return procedure for 93LC86T/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
93LC86T/SN Tags
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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