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Microchip Technology 93LC76T/SN
- Part No.:
- 93LC76T/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
93LC76T/SN.pdf
- Description:
- IC EEPROM 8KBIT MICROWIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,189
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Product details
Overview
93LC76T/SN from Microchip Technology Inc. is an 8K-bit Microwire-compatible serial EEPROM with configurable x8/x16 organization via 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 device status signaling on DO pin - used for parameter storage in embedded microcontroller systems.
For engineers reviewing the 93LC76T/SN datasheet, 93LC76T/SN pinout, 93LC76T/SN application, or 93LC76T/SN equivalent, this page provides verified technical context, validated pin functions, real-world use scenarios, and confirmed alternative parts for legacy design continuity and supply chain resilience.
Technical Context
The 93LC76T/SN implements a synchronous 3-wire Microwire interface (CS/CLK/DI/DO) with ORG-selectable memory mapping: 1024 × 8-bit or 512 × 16-bit. It uses CMOS EEPROM technology with integrated power-on/off data protection and automatic ERAL before WRAL execution.
Operation requires explicit Erase/Write Enable (EWEN) before programming; PE pin enables hardware write-protection. Ready/Busy status is actively signaled on DO during erase/write cycles while CS remains high, enabling non-blocking polling without external timing components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 8 Kbit (1024 × 8 or 512 × 16 organization) |
| Supply voltage | 2.5 V to 6.0 V - supports direct interfacing with 3.3 V and 5 V logic domains |
| Interface | Microwire 3-wire serial (CS, CLK, DI, DO) - no SPI mode or address latching required |
| Endurance | 1,000,000 erase/write cycles - ensures long-term reliability in firmware update or calibration logging |
| Data retention | 200 years at 25°C - suitable for unattended field-deployed equipment with infrequent writes |
| Max clock frequency | 3 MHz at VCC ≥ 4.5 V - enables fast sequential reads (22–29 clocks per instruction) |
| Operating temperature | –40°C to +85°C (Industrial grade) - validated for automotive body control and industrial sensor modules |
| Package | 8-pin SOIC (150 mil body, /SN suffix) - surface-mount compatible with standard reflow profiles |
Pinout & Package
8-pin SOIC package (150 mil width), RoHS-compliant, with gull-wing leads and standard JEDEC MS-012AC footprint. Pin 1 marked by notch or dot; pin numbering follows counter-clockwise convention from top-left corner when viewed from top.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-high enable: must be held low ≥250 ns between instructions; deselects device into standby but allows ongoing erase/write to complete |
| CLK | Serial Clock | Synchronizes all data transfers on rising edge; stops/resumes freely during transmission; ignored when CS = low |
| DI | Data Input | Accepts start bit, opcode, address, and write data; shares bus with DO only if external pull-up prevents conflict during dummy-zero phase |
| DO | Data Output / Status | Outputs read data or Ready/Busy (low = busy); enters high-Z on CS falling edge; valid only when CS = high |
| VSS | Ground | Reference return path for all signals and internal circuitry; must be low-impedance connection |
| ORG | Organization Select | Connect to VCC for 512 × 16 mode, VSS for 1024 × 8 mode; internal pull-up defaults to x16 if left floating |
| PE | Program Enable | Connect to VSS to disable all erase/write operations; internal pull-up enables programming if left floating |
| VCC | Power Supply | 2.5–6.0 V input with built-in power-on/off protection; inhibits programming below 1.4 V threshold |
Key Features
| Feature | Design Value |
|---|---|
| Self-timed erase/write | Eliminates need for external timing circuitry: 3 ms/word typical, 15 ms max for ERAL, 30 ms max for WRAL |
| Hardware write protection | PE pin disables all programming regardless of EWEN state - critical for preventing accidental overwrites in field units |
| Sequential read capability | Auto-incrementing address pointer enables continuous burst reads while CS stays high - reduces host CPU overhead |
| Power-on/off data protection | Internal circuitry blocks erase/write when VCC < 1.4 V - prevents corruption during brown-out or hot-swap events |
| Status signaling on DO | Real-time Ready/Busy feedback allows polling without fixed delays - improves system responsiveness vs. timeout-based waits |
| Configurable memory width | Single device supports both byte-oriented (x8) and word-oriented (x16) host architectures via ORG pin - simplifies BOM consolidation |
Applications
| Motor Control Parameter Storage | Industrial Sensor Calibration Data |
|---|---|
Use Scenario: Storing motor commutation angles, PID coefficients, and fault thresholds in BLDC motor drives. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed at startup and updated during field calibration. Use Value: Enables field-adjustable performance tuning without firmware reflash; retains settings across power cycles and thermal stress. |
Use Scenario: Recording factory-trimmed offset/gain values and temperature compensation curves for analog sensor front-ends. IC Role / Device Role / Timing Role: Persistent calibration repository read once per boot and applied to ADC conversion pipeline. Use Value: Maintains measurement accuracy over lifetime and temperature range; eliminates need for external trim pots or OTP fuses. |
| Medical Device Configuration | Automotive Body Control Module |
Use Scenario: Saving user preferences (alarm thresholds, display brightness), device ID, and usage logs in portable diagnostic tools. IC Role / Device Role / Timing Role: Secure, low-power configuration store supporting audit trails and regulatory traceability requirements. Use Value: Meets IEC 62304 data integrity requirements; 200-year retention ensures compliance over full product lifecycle. |
Use Scenario: Holding door lock actuator timing profiles, window auto-reverse thresholds, and lighting dimming curves in vehicle BCMs. IC Role / Device Role / Timing Role: Field-programmable parameter bank updated via CAN diagnostics and retained through battery disconnect. Use Value: Supports dealer-level recalibration without ECU replacement; withstands automotive load dump and cold-crank conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 93LC76C/SN | Pin-compatible revision with enhanced ESD rating (6 kV HBM vs. 4 kV) and updated AC specs; same pinout, timing, and instruction set | Recommended for new designs requiring higher robustness in noisy industrial environments | Select 93LC76C/SN when designing new products; verify compatibility with existing 93LC76T/SN firmware and layout |
| AT25080B-MAU-10 | 8 Kbit SPI EEPROM (8-pin SOIC), 2.5–5.5 V, 20 MHz max clock, no ORG pin - fixed 1024 × 8 organization | Requires SPI interface instead of Microwire; lacks hardware write-protection (PE) and automatic ERAL/WRAL sequencing | Choose only if migrating to SPI architecture; redesign required for clock/data protocol, status polling, and write-enable logic |
Compared with 93LC76T/SN, the 93LC76C/SN offers improved ESD immunity and is fully backward-compatible, while the AT25080B-MAU-10 demands interface redesign and loses ORG configurability and integrated erase/write sequencing - making it a functional alternative only under SPI migration constraints.
Availability
93LC76T/SN is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and medical device manufacturing requiring stable component supply amid obsolescence transitions.
Supply support for 93LC76T/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 company specializing in microcontrollers, analog devices, and nonvolatile memory solutions for embedded applications.
The 93LC76T/SN belongs to Microchip's legacy Microwire EEPROM product line, designed specifically for cost-sensitive, low-pin-count systems requiring simple, reliable, and low-power configuration storage.
FAQ
What is the function of the ORG pin on the 93LC76T/SN?
The ORG pin on the 93LC76T/SN selects memory organization: tied to VCC for 512 × 16-bit mode, tied to VSS for 1024 × 8-bit mode. An internal pull-up defaults to x16 if left unconnected. This allows one 93LC76T/SN part number to serve both byte- and word-oriented host processors without changing firmware addressing logic.
Does the 93LC76T/SN require external timing components for erase or write operations?
No. The 93LC76T/SN features fully self-timed erase and write cycles - including auto-erase - with typical durations of 3 ms per word, 15 ms max for ERAL, and 30 ms max for WRAL. No external capacitors, clocks, or delay circuits are needed, simplifying board design and reducing BOM count.
How does the PE pin protect memory contents on the 93LC76T/SN?
The PE (Program Enable) pin on the 93LC76T/SN provides hardware-level write protection: tying PE to VSS disables all erase and write functions regardless of EWEN command state. With internal pull-up, floating PE enables programming - offering dual-layer protection alongside software-controlled EWEN/EWDS commands.
Can the 93LC76T/SN be used in place of the 93LC76C/SN?
Yes, the 93LC76T/SN is functionally and pin-compatible with the 93LC76C/SN, though the latter offers improved ESD rating (6 kV vs. 4 kV) and updated AC specifications. Existing 93LC76C/SN layouts and firmware work with 93LC76T/SN, but new designs should prefer the C-version for enhanced robustness.
What is the significance of the "T" in the 93LC76T/SN part number?
The "T" in 93LC76T/SN denotes tape-and-reel packaging format, indicating the device is supplied in automated assembly-ready reels rather than tubes or trays. The "/SN" suffix specifies the 8-pin SOIC package with 150-mil body width - critical for correct footprint selection and SMT process validation.
93LC76T/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:
- 8Kbit
- Memory Organization:
- 1K x 8, 512 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
93LC76T/SN FAQ
1.How can I place an order for 93LC76T/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 93LC76T/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 93LC76T/SN reliable?
The price and inventory of 93LC76T/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 93LC76T/SN is usually 5 days.
3.What payment methods are accepted for 93LC76T/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 93LC76T/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 93LC76T/SN?
93LC76T/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 93LC76T/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 93LC76T/SN?
For technical support, including 93LC76T/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 93LC76T/SN requirements.
6.How does Aetrix verify that 93LC76T/SN is sourced from the original manufacturer or authorized distributors?
All 93LC76T/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 93LC76T/SN meets industry standards.
7.What is the process for return or replacement of 93LC76T/SN?
All 93LC76T/SN units undergo pre-shipment inspection (PSI). If there is an issue with 93LC76T/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 93LC76T/SN part is unused and in its original packaging.
Return procedure for 93LC76T/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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