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Microchip Technology 93LC76CT-E/SN
- Part No.:
- 93LC76CT-E/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
93LC76CT-E/SN.pdf
- Description:
- IC EEPROM 8KBIT MICROWIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,886
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Product details
Overview
93LC76CT-E/SN from Microchip Technology Inc. is an 8Kbit, 512 × 16-bit organization serial EEPROM with Microwire-compatible 3-wire interface, VCC range of 2.5–5.5V, industrial/automotive temperature grade (−40°C to +125°C), and integrated Program Enable (PE) and ORG pins for write protection and word-size selection. It serves in embedded system configuration storage where nonvolatile, low-power, and pin-efficient memory is required.
For engineers reviewing the 93LC76CT-E/SN datasheet, 93LC76CT-E/SN pinout, 93LC76CT-E/SN application, or 93LC76CT-E/SN equivalent, key selection considerations include its dual-word-size capability (x8/x16 via ORG), self-timed erase/write cycles, Ready/Busy status signaling on DO, 1M endurance cycles, and automotive-grade reliability across −40°C to +125°C.
Technical Context
The 93LC76CT-E/SN implements a synchronous serial Microwire interface with CS, CLK, DI, and DO lines, requiring a Start bit detection before instruction execution. Its internal logic supports x16 organization when ORG = VCC and x8 when ORG = VSS - a hardware-configurable feature not present in A/B variants.
Write operations require prior EWEN command and active-high PE signal; ERAL and WRAL instructions enable full-array erase and write with auto-erase. Device status is polled via DO during programming, with TWC = 5 ms typical erase/write cycle time at VCC ≥ 2.5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (512 × 16-bit or 1024 × 8-bit, selectable via ORG pin) |
| VCC Range | 2.5V to 5.5V - supports single-supply operation in 3.3V and 5V systems |
| Endurance | 1,000,000 erase/write cycles - enables long-term field calibration data logging |
| Data Retention | 200 years at 25°C - ensures firmware/config integrity over product lifetime |
| Interface | Microwire-compatible 3-wire serial (CS, CLK, DI/DO) - minimal GPIO usage on microcontrollers |
| Temp Range | −40°C to +125°C (Automotive E-grade) - qualified for under-hood and industrial control environments |
| Write Cycle Time | 5 ms typical (TWC) - deterministic timing for real-time system state saving |
Pinout & Package
93LC76CT-E/SN is housed in an 8-lead SOIC package (SN suffix), with exposed pad optional per DFN/TDFN variants but not applicable here. Pin functions are fully defined per Microchip DS21796M.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-high enable; must be held low ≥250 ns between instructions to reset internal logic |
| CLK | Serial Clock | Synchronizes all data transfers; rising edge clocks in opcodes, addresses, and data |
| DI | Data Input | Receives Start bit, instructions, addresses, and write data; tied to DO only with series resistor to avoid bus conflict |
| DO | Data Output / Status | Outputs read data or Ready/Busy (low = busy); enters High-Z on CS falling edge |
| VSS | Ground | Reference for all I/O and internal circuitry; must be low-impedance connection |
| ORG | Organization Select | Hardware-configured word size: VCC → 512×16, VSS → 1024×8; not available on A/B versions |
| PE | Program Enable | Write-enable control: high = programming allowed; must be driven - no floating allowed |
| VCC | Power Supply | 2.5–5.5V supply; internal POR triggers at ~1.5V; powers EEPROM core and interface logic |
Key Features
| Feature | Design Value |
|---|---|
| Word-size select via ORG pin | Enables flexible memory mapping: 16-bit words for register banks or 8-bit bytes for ASCII config strings |
| Integrated Program Enable (PE) | Hardware-level write protection independent of software state - prevents corruption during brown-out or reset |
| Self-timed Erase/Write with Auto-Erase | Eliminates external timing components; guarantees complete erase before write without host intervention |
| Ready/Busy status on DO pin | Enables polling-based firmware flow control instead of fixed delays - improves system responsiveness |
| Power-on/off data protection | Internal circuitry inhibits writes below VCC threshold (~1.5V), preventing partial writes during power ramp |
Applications
| Motor Control Configuration | Industrial Sensor Calibration |
|---|---|
Use Scenario: Storing motor phase alignment offsets, current limits, and PID coefficients in servo drives. IC Role / Device Role / Timing Role: Nonvolatile configuration store accessed at boot and updated during field tuning. Use Value: Enables factory-set and user-adjustable parameters without requiring external MCU flash or battery-backed RAM. | Use Scenario: Recording sensor-specific gain/offset trim values during production calibration. IC Role / Device Role / Timing Role: One-time programmable (OTP)-like storage with reprogrammability for recalibration. Use Value: Achieves ±0.1% measurement accuracy by storing 16-bit calibration coefficients with 200-year retention. |
| Automotive Body Controller | Medical Device Settings |
Use Scenario: Saving seat/mirror position presets, lighting profiles, and door lock behavior in automotive body ECUs. IC Role / Device Role / Timing Role: Automotive-grade (E-temp) serial EEPROM interfaced to 8-bit/16-bit MCUs via Microwire. Use Value: Meets AEC-Q100 requirements with −40°C to +125°C operation and 1M endurance for >15-year vehicle life. | Use Scenario: Storing FDA-mandated device configurations, user preferences, and audit logs in portable diagnostic tools. IC Role / Device Role / Timing Role: Secure, tamper-resistant parameter storage with hardware write-protection (PE pin). Use Value: Ensures regulatory compliance via guaranteed data integrity and controlled write access across power cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 93LC76B-E/SN | No ORG or PE pins; fixed 512×16-bit organization; same VCC/temp specs | Lacks hardware write protection and word-size flexibility - suitable only for static 16-bit use cases | Select when design requires simplified BOM and no runtime reconfiguration of word size or write enable |
| AT25DF041A-SHN-T | 4 Mbit SPI NOR Flash; sector erase; no built-in write protection pins; different command set | Higher density but lacks Ready/Busy polling and hardware PE/ORG; requires software-managed write enable | Choose for larger code/data storage needs where SPI interface is already used and hardware write lock is not critical |
Compared with 93LC76B-E/SN, the 93LC76CT-E/SN adds configurable word size and hardware write lock; compared with AT25DF041A-SHN-T, it offers deterministic 5 ms write timing, lower power standby current (<5 µA), and simpler 3-wire protocol for resource-constrained MCUs.
Availability
93LC76CT-E/SN is available at Aetrix Electronics and suitable for automotive body control units, industrial sensor calibration modules, and medical device configuration storage requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant nonvolatile memory.
Supply support for 93LC76CT-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 microcontroller, analog, and memory solutions, headquartered in Chandler, Arizona, with global design, manufacturing, and sales operations.
The 93LC76C family is designed for cost-sensitive, low-power embedded systems needing reliable serial EEPROM with flexible organization and hardware-level data protection - targeting automotive, industrial, and medical applications.
FAQ
What is the memory organization of the 93LC76CT-E/SN?
The 93LC76CT-E/SN supports dual organization: 512 × 16-bit when ORG = VCC, or 1024 × 8-bit when ORG = VSS. This hardware-selectable mode distinguishes it from fixed-organization variants like 93LC76B-E/SN. The 93LC76CT-E/SN datasheet confirms both modes operate within the same 8Kbit capacity and share identical timing and endurance specs.
How does the Program Enable (PE) pin function on the 93LC76CT-E/SN?
The PE pin on the 93LC76CT-E/SN must be driven high to allow erase/write operations; tying it low permanently disables programming. Unlike software-based locks, this hardware control prevents accidental writes during power transients or firmware faults. The 93LC76CT-E/SN requires PE = high *before* the final clock edge of any WRITE or ERASE command, as specified in DS21796M Section 2.8.
What is the maximum clock frequency supported by the 93LC76CT-E/SN?
The 93LC76CT-E/SN supports up to 3 MHz clock frequency when VCC ≥ 4.5V, 2 MHz at 2.5V ≤ VCC < 4.5V, and 1 MHz at 1.8V ≤ VCC < 2.5V. These AC specifications are validated across the full −40°C to +125°C temperature range. The 93LC76CT-E/SN's TCKH and TCKL timing constraints scale accordingly per voltage band.
Does the 93LC76CT-E/SN support sequential read operations?
Yes, the 93LC76CT-E/SN supports sequential read: when CS remains high after a READ instruction, the address automatically increments and outputs subsequent memory locations on DO. This eliminates repeated instruction overhead and is confirmed in DS21796M Section 2.7. Sequential read works identically in both x8 and x16 modes, outputting 8 or 16 bits per address increment.
What packaging and marking identify the 93LC76CT-E/SN?
The 93LC76CT-E/SN uses an 8-lead SOIC package (SN suffix), marked with "3L76CT" on the first line and "E" (for automotive temp grade) plus date code on the second line per DS21796M page 13. The "T" in the part number denotes tape-and-reel packaging, and "E" confirms −40°C to +125°C qualification - verified in the Device Selection Table and Package Marking Information sections.
93LC76CT-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:
- Not 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 ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
93LC76CT-E/SN FAQ
1.How can I place an order for 93LC76CT-E/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 93LC76CT-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 93LC76CT-E/SN reliable?
The price and inventory of 93LC76CT-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 93LC76CT-E/SN is usually 5 days.
3.What payment methods are accepted for 93LC76CT-E/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 93LC76CT-E/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 93LC76CT-E/SN?
93LC76CT-E/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 93LC76CT-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 93LC76CT-E/SN?
For technical support, including 93LC76CT-E/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 93LC76CT-E/SN requirements.
6.How does Aetrix verify that 93LC76CT-E/SN is sourced from the original manufacturer or authorized distributors?
All 93LC76CT-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 93LC76CT-E/SN meets industry standards.
7.What is the process for return or replacement of 93LC76CT-E/SN?
All 93LC76CT-E/SN units undergo pre-shipment inspection (PSI). If there is an issue with 93LC76CT-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 93LC76CT-E/SN part is unused and in its original packaging.
Return procedure for 93LC76CT-E/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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