My Inquiry
My Account
Microchip Technology 93LC76CT-I/MNY
- Part No.:
- 93LC76CT-I/MNY
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
93LC76CT-I/MNY.pdf
- Description:
- IC EEPROM 8KBIT MICROWIRE 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,411
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
93LC76CT-I/MNY from Microchip Technology Inc. is an 8Kbit, low-voltage, serial EEPROM with Microwire-compatible 3-wire interface, 2.5–5.5V VCC range, and dual 8-/16-bit word organization selectable via ORG pin. It features Program Enable (PE) pin for full-array write protection, self-timed erase/write cycles, and industrial temperature operation (–40°C to +85°C). Used in embedded system configuration storage, sensor calibration data retention, and power-fail-safe parameter backup.
For engineers reviewing the 93LC76CT-I/MNY datasheet, 93LC76CT-I/MNY pinout, 93LC76CT-I/MNY application, or 93LC76CT-I/MNY equivalent, key selection criteria include voltage compatibility (2.5–5.5V), ORG/PE pin dependency for configuration and protection, Ready/Busy status polling via DO, sequential read capability, and automotive-grade alternatives for extended temperature designs.
Technical Context
The 93LC76CT-I/MNY implements a synchronous serial Microwire interface with CS, CLK, DI, and DO signals, requiring a Start bit detection before instruction execution. Its memory array supports both x8 (ORG = VSS) and x16 (ORG = VCC) configurations, with dedicated EWEN/EWDS commands enabling/disabling erase/write operations independently of power state.
Write protection is enforced by the PE pin: logic high enables programming; logic low inhibits all erase/write functions. The device asserts Ready/Busy status on the DO pin during self-timed erase/write cycles (TWC = 5 ms max), with status valid after TSV (≤500 ns at 1.8V) following CS high assertion after minimum TCSL (250 ns).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 8 Kbit (1024 × 8 or 512 × 16, configurable via ORG pin) |
| VCC range | 2.5 V to 5.5 V - supports wide supply rails including 3.3 V and 5 V systems |
| Interface | Microwire-compatible 3-wire serial (CS, CLK, DI/DO) - no I²C or SPI protocol overhead |
| Endurance | 1,000,000 erase/write cycles - suitable for frequent field updates |
| Data retention | >200 years at 25°C - ensures long-term reliability in unpowered storage |
| Temp range | –40°C to +85°C (Industrial grade) - validated for industrial control and consumer electronics |
| Max clock frequency | 3 MHz at VCC ≥ 4.5 V - enables fast configuration reads during boot |
Pinout & Package
93LC76CT-I/MNY is packaged in an 8-lead 2×3 mm DFN (Dual Flat No-lead) with exposed pad, RoHS-compliant matte tin finish. Pin 1 is laser-marked; exposed pad may be connected to VSS or left floating per design requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-high enable: must be held low ≥250 ns between instructions; deselects device into standby mode |
| CLK | Serial Clock | Synchronizes opcode/address/data transfer on rising edge; stoppable mid-sequence without error |
| DI | Data Input | Receives Start bit, opcodes, addresses, and write data; requires pull-down on CS per datasheet recommendation |
| 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; connects to exposed pad in DFN package |
| ORG | Organization select | Logic high → x16 mode; logic low → x8 mode; must be externally tied - not floating |
| PE | Program Enable | Logic high → enables erase/write; logic low → disables all programming - mandatory for secure operation |
| VCC | Power supply | 2.5–5.5 V input; internal POR triggers at ~1.5 V; powers all logic and memory cells |
Key Features
| Feature | Design Value |
|---|---|
| Word-size configurability | Single hardware pin (ORG) selects 8-bit or 16-bit data width - eliminates firmware rework across variants |
| Hardware write protection | Dedicated PE pin provides physical disable of all erase/write - prevents accidental corruption during debug or brown-out |
| Self-timed erase/write | No external timing control needed; internal logic manages auto-erase before write - simplifies host MCU firmware |
| Ready/Busy polling | DO pin doubles as status indicator - enables non-blocking host operation without fixed delay loops |
| Sequential read mode | Holding CS high allows automatic address increment and continuous data stream - reduces transaction overhead for block reads |
Applications
| Industrial PLC Configuration Storage | Automotive Sensor Calibration Data |
|---|---|
Use Scenario: Storing I/O mapping, PID tuning parameters, and alarm thresholds in programmable logic controllers subject to frequent firmware updates and field reconfiguration. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed during boot and runtime via Microwire interface; ORG set to x8 for byte-aligned parameter access. Use Value: 1M endurance and >200-year retention ensure parameter integrity across 10+ year product lifecycles without battery backup. | Use Scenario: Retaining factory-calibrated offset/gain coefficients for temperature, pressure, and position sensors in engine control units operating at –40°C to +125°C ambient. IC Role / Device Role / Timing Role: Calibration data vault accessed once per power-on; PE pin held low during normal operation to prevent corruption from EMI or software faults. Use Value: Hardware-level PE protection and VCC brown-out detection (1.5 V threshold) guarantee data safety during vehicle cranking events. |
| Medical Device Settings Backup | Smart Meter Firmware Patch Storage |
Use Scenario: Preserving user-configured therapy profiles, alarm limits, and language preferences in portable infusion pumps with strict regulatory data integrity requirements. IC Role / Device Role / Timing Role: Secure settings store using EWEN/EWDS command sequence; DO pin polled for completion to meet deterministic response deadlines. Use Value: Self-timed 5 ms write cycle and Ready/Busy signaling enable predictable timing for FDA-critical firmware validation steps. | Use Scenario: Holding over-the-air firmware patches in utility smart meters deployed in remote locations where field updates occur infrequently but must be highly reliable. IC Role / Device Role / Timing Role: Patch image repository accessed via sequential read; WRAL instruction used for full-array update with automatic ERAL pre-erase. Use Value: WRAL + auto-ERAL eliminates need for separate erase command - reducing host code complexity and flash wear management overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 93LC76C-I/SN | Same 8Kbit Microwire EEPROM, identical ORG/PE functionality, but in 8-lead SOIC package (5.3 mm × 4.4 mm vs. DFN's 2×3 mm) | SOIC offers hand-soldering and socket compatibility; DFN requires reflow and PCB space optimization | Select 93LC76C-I/SN for prototyping, repair, or legacy board reuse; choose 93LC76CT-I/MNY for space-constrained, high-volume production. |
| AT25080B-MAHL-T | 8 Kbit SPI EEPROM (not Microwire); no ORG/PE pins; uses standard SPI mode 0,0; 1.8–5.5 V VCC | Requires SPI-capable MCU peripheral; lacks hardware write protection and word-size flexibility | Select AT25080B-MAHL-T only if migrating to SPI infrastructure; retain 93LC76CT-I/MNY when Microwire legacy support or PE-based security is required. |
Compared with 93LC76C-I/SN, the 93LC76CT-I/MNY delivers identical functionality in a 60% smaller footprint, while versus AT25080B-MAHL-T it preserves Microwire compatibility and adds hardware-level write protection - critical for safety-critical configuration storage.
Availability
93LC76CT-I/MNY is available at Aetrix Electronics and suitable for industrial automation, automotive subsystems, and medical electronics requiring stable component supply, long-term obsolescence planning, and RoHS-compliant packaging.
Supply support for 93LC76CT-I/MNY 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 components, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 93LC76C family was designed specifically for cost-sensitive, low-power embedded systems needing reliable, pin-efficient serial EEPROM with flexible word-width and robust hardware write protection - targeting industrial control, automotive body electronics, and consumer appliance markets.
FAQ
What is the function of the ORG pin on the 93LC76CT-I/MNY?
The ORG pin on the 93LC76CT-I/MNY selects memory word size: logic high (VCC) configures the 8Kbit array as 512 × 16-bit, while logic low (VSS) configures it as 1024 × 8-bit. This pin must be externally tied - floating is not permitted. The 93LC76CT-I/MNY requires this pin to be set at power-up to determine instruction decoding and data width behavior, and it directly affects READ/WRITE opcode interpretation per Tables 1-3 and 1-4 in DS21796M.
How does the PE pin protect memory on the 93LC76CT-I/MNY?
The PE (Program Enable) pin on the 93LC76CT-I/MNY physically gates all erase and write operations: only when PE is driven high can EWEN, ERASE, WRITE, ERAL, or WRAL instructions execute. If PE is low, those commands are ignored - even if EWEN has been issued. This hardware lock complements the EWEN/EWDS software commands and is mandatory for secure operation. The 93LC76CT-I/MNY datasheet specifies PE must never float and must be tied to VCC or VSS.
What is the maximum clock frequency supported by the 93LC76CT-I/MNY at 3.3 V VCC?
At VCC = 3.3 V (within 2.5–4.5 V range), the 93LC76CT-I/MNY supports a maximum clock frequency of 2 MHz per Table 1-2 (A1 parameter). This is confirmed by the AC characteristics table where FCLK max = 2 MHz for 2.5V ≤ VCC < 4.5V. Exceeding this frequency risks setup/hold time violations (e.g., TDIS, TDIH min = 100 ns), leading to opcode misreads or failed writes.
Does the 93LC76CT-I/MNY require external pull-up resistors on its I/O lines?
The 93LC76CT-I/MNY does not require external pull-ups on CS, CLK, DI, or DO for basic operation, as its inputs are CMOS-compatible with rail-to-rail thresholds. However, Microchip recommends a 10 kΩ pull-down resistor on the CS pin (Section 2.3 Note) to prevent spurious activation during power-up or noise events. For shared DI/DO bus configurations, a series resistor is advised to avoid bus conflict during dummy-zero read phases.
What is the purpose of the Ready/Busy status on the DO pin of the 93LC76CT-I/MNY?
The DO pin of the 93LC76CT-I/MNY serves dual purpose: during READ, it outputs data; during ERASE/WRITE, it signals Ready/Busy - low indicates ongoing self-timed operation (TWC = 5 ms max), high confirms completion. To sample status, CS must be brought high for ≥250 ns after TCSL, then DO is sampled on CLK edges. This enables efficient polling without fixed delays, and the 93LC76CT-I/MNY requires issuing a Start bit followed by CS low to clear the status flag post-operation.
93LC76CT-I/MNY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN (2x3)
93LC76CT-I/MNY FAQ
1.How can I place an order for 93LC76CT-I/MNY through Aetrix?
Please submit a Request for Quotation (RFQ) for 93LC76CT-I/MNY 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-I/MNY reliable?
The price and inventory of 93LC76CT-I/MNY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 93LC76CT-I/MNY is usually 5 days.
3.What payment methods are accepted for 93LC76CT-I/MNY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 93LC76CT-I/MNY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 93LC76CT-I/MNY?
93LC76CT-I/MNY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 93LC76CT-I/MNY 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-I/MNY?
For technical support, including 93LC76CT-I/MNY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 93LC76CT-I/MNY requirements.
6.How does Aetrix verify that 93LC76CT-I/MNY is sourced from the original manufacturer or authorized distributors?
All 93LC76CT-I/MNY 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-I/MNY meets industry standards.
7.What is the process for return or replacement of 93LC76CT-I/MNY?
All 93LC76CT-I/MNY units undergo pre-shipment inspection (PSI). If there is an issue with 93LC76CT-I/MNY, 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-I/MNY part is unused and in its original packaging.
Return procedure for 93LC76CT-I/MNY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
93LC76CT-I/MNY 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…
