My Inquiry
My Account
Microchip Technology 93C76BT-I/SN
- Part No.:
- 93C76BT-I/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
93C76BT-I/SN.pdf
- Description:
- IC EEPROM 8KBIT MICROWIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,836
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
93C76BT-I/SN from Microchip Technology Inc. is an 8K-bit, 4.5–5.5V serial EEPROM with fixed 8-bit organization (no ORG pin), industrial temperature range (–40°C to +85°C), and SOIC-8 package. It implements Microwire-compatible 3-wire serial interface (CS/CLK/DI/DO), supports self-timed erase/write cycles, and provides Ready/Busy status via DO pin for embedded system configuration storage.
For engineers reviewing the 93C76BT-I/SN datasheet, 93C76BT-I/SN pinout, 93C76BT-I/SN application, or 93C76BT-I/SN equivalent, key selection considerations include its 4.5–5.5V VCC range, 8-bit x 1024 organization, 2 ms program cycle time, 1M endurance rating, and compatibility with legacy Microwire controllers in space-constrained industrial control modules.
Technical Context
This device belongs to the 93Cxx family of serial EEPROMs using synchronous 3-wire Microwire protocol. It operates without ORG or PE pins-unlike 'C' variants-making it a dedicated 8-bit memory with fixed instruction set and address width (10-bit addressing for 1024 locations).
It requires CS high to initiate communication, accepts opcodes on rising CLK edges, and outputs data or status on DO synchronized to CLK. Power-on data protection activates below 3.8V VCC threshold, and EWEN/EWDS commands enforce write enable/disable sequencing before erase/write operations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 8 Kbit (1024 × 8-bit) - fixed word width, no configuration required |
| VCC operating range | 4.5 V to 5.5 V - compatible with 5V logic systems; no low-voltage operation |
| Interface | Microwire-compatible 3-wire serial (CS, CLK, DI, DO) - minimal GPIO usage, no SPI mode select needed |
| Write cycle time | 2 ms max - deterministic timing for firmware-controlled write confirmation |
| Endurance | 1,000,000 erase/write cycles - suitable for frequent calibration or logging updates |
| Data retention | 200 years at 25°C - long-term nonvolatile storage without refresh |
| Temperature range | –40°C to +85°C (Industrial) - validated for factory automation and motor drives |
Pinout & Package
8-lead SOIC (SN) package with standard 150-mil body width and Pb-free Matte Tin finish. Pin 1 marked by laser dot; pin 1 is CS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (CS) | Chip Select | Active-high enable; must be held ≥250 ns low between instructions to reset internal state |
| 2 (CLK) | Serial Clock | Rising-edge synchronized I/O; clock can pause mid-transfer without corruption |
| 3 (DI) | Data Input | Accepts Start bit, opcode, address, and data; no pull-up required |
| 4 (DO) | Data Output / Status | Outputs read data or Ready/Busy (low = busy); enters High-Z when CS low |
| 5 (VSS) | Ground | Reference for all digital and analog functions; must be low-impedance connection |
| 6 (NC) | No Connect | Not bonded; leave unconnected - not ORG or PE (absent in 'A'/'B' versions) |
| 7 (NC) | No Connect | Not bonded; leave unconnected - not ORG or PE (absent in 'A'/'B' versions) |
| 8 (VCC) | Power Supply | 4.5–5.5V only; internal POR triggers at ~3.8V to prevent partial writes |
Key Features
| Feature | Design Value |
|---|---|
| Self-timed erase/write | Eliminates external timing circuitry; internal state machine manages auto-erase before write |
| Ready/Busy status on DO | Enables polling-based firmware flow control without interrupt or timeout overhead |
| Power-on/off data protection | Hardware lockout below 3.8V VCC prevents corruption during brown-out or power ramp |
| Sequential read mode | Reduces host CPU overhead by streaming full memory contents with single CS assertion |
| EWEN/EWDS command security | Requires explicit enable before each write session, preventing accidental overwrites |
Applications
| Industrial PLC Configuration Storage | Automotive ECU Calibration Data |
|---|---|
Use Scenario: Storing I/O mapping tables and ladder logic parameters in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed during boot and runtime reconfiguration. Use Value: 8-bit organization matches byte-aligned register sets; 2 ms write time enables fast parameter updates during maintenance mode. | Use Scenario: Holding engine trim values and sensor offset corrections in engine control units. IC Role / Device Role / Timing Role: Secure, tamper-resistant memory for field-updatable calibration constants. Use Value: 1M endurance supports repeated recalibration across vehicle lifetime; 4.5–5.5V range aligns with automotive 5V supply rails. |
| Medical Device Setup Profiles | Point-of-Sale Terminal Settings |
Use Scenario: Saving user-defined therapy parameters and safety limits in infusion pumps. IC Role / Device Role / Timing Role: Fail-safe storage for critical operational settings requiring guaranteed retention. Use Value: 200-year data retention meets medical regulatory requirements; Ready/Busy polling ensures write completion before power-down. | Use Scenario: Maintaining tax rates, receipt formatting rules, and network credentials in retail terminals. IC Role / Device Role / Timing Role: Low-pin-count serial memory for infrequent but mission-critical configuration changes. Use Value: SOIC-8 footprint simplifies layout in cost-sensitive designs; Microwire compatibility avoids SPI driver licensing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 93C76AT-I/SN | Same 8-bit organization and SOIC-8 package, but rated for 1.8–5.5V VCC range | Supports battery-powered or mixed-voltage systems where 5V-only operation is insufficient | Select if design uses <4.5V supply; otherwise 93C76BT-I/SN offers tighter voltage tolerance and higher noise immunity |
| AT25080B-MAHL-T | SPI interface (4-wire), 8K-bit, 2.5–5.5V, 5ms write cycle, same SOIC-8 package | Requires SPI master instead of Microwire; slower write timing affects real-time update latency | Choose only if migrating from legacy Microwire to SPI architecture; verify controller firmware compatibility |
Compared with 93C76AT-I/SN and AT25080B-MAHL-T, the 93C76BT-I/SN delivers optimal performance in fixed 5V industrial systems where Microwire compatibility, fast 2 ms writes, and robust power-supply rejection are prioritized over wide-VCC flexibility or SPI standardization.
Availability
93C76BT-I/SN is available at Aetrix Electronics and suitable for industrial PLC configuration storage, automotive ECU calibration data, and medical device setup profiles requiring stable component supply and long-term lifecycle support.
Supply support for 93C76BT-I/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 components, and memory solutions, headquartered in Chandler, Arizona.
The 93Cxx EEPROM product line targets cost-sensitive, space-constrained embedded systems needing reliable nonvolatile storage with minimal interface complexity and proven industrial-grade reliability.
FAQ
What is the memory organization of the 93C76BT-I/SN?
The 93C76BT-I/SN has a fixed 8-bit organization (1024 × 8-bit), meaning it stores 1024 bytes of data. Unlike 'C' variants, it lacks an ORG pin and does not support 16-bit mode. This simplifies hardware design by eliminating external configuration logic and ensures consistent byte-aligned access across all implementations of the 93C76BT-I/SN.
Does the 93C76BT-I/SN require external pull-up resistors on its I/O lines?
The 93C76BT-I/SN does not require external pull-ups on CS, CLK, or DI for basic operation, as internal weak pull-downs are sufficient for most 5V systems. However, a 10 kΩ pull-down on CS is recommended per Microchip's datasheet to prevent accidental activation during power-up. DO is actively driven or High-Z, so no pull-up is needed unless shared-bus configurations demand bus contention mitigation.
How does the Ready/Busy status work on the 93C76BT-I/SN?
The 93C76BT-I/SN asserts Ready/Busy status on the DO pin: DO = low indicates ongoing erase/write, and DO = high signals completion. To read status, CS must be brought high after ≥250 ns low time (TCSL). The device remains responsive to status polling even during self-timed cycles, enabling deterministic firmware wait loops without timeouts or interrupts.
What is the minimum VCC voltage required for safe operation of the 93C76BT-I/SN?
The 93C76BT-I/SN requires VCC ≥ 4.5 V for guaranteed functional operation. Its internal power-on reset (POR) circuit disables all programming functions below ~3.8 V to prevent data corruption. Operating below 4.5 V risks undefined behavior, failed writes, or incomplete erase cycles - therefore, the absolute minimum valid supply is 4.5 V, matching its specified VCC range.
Can the 93C76BT-I/SN be used in place of a 93C76CT-I/SN?
No - the 93C76BT-I/SN is not a drop-in replacement for the 93C76CT-I/SN. The 'B' version lacks ORG and PE pins, has fixed 8-bit organization, and omits write-protection logic. The 'C' version requires ORG/PE connections and supports both 8-bit and 16-bit modes. Swapping them would require PCB redesign, firmware changes, and loss of configurable word size - making them functionally incompatible despite identical pin count and package.
93C76BT-I/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:
- 512 x 16
- Memory Interface:
- Microwire
- Clock Frequency:
- 3 MHz
- Write Cycle Time - Word, Page:
- 2ms
- Access Time:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
93C76BT-I/SN FAQ
1.How can I place an order for 93C76BT-I/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 93C76BT-I/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 93C76BT-I/SN reliable?
The price and inventory of 93C76BT-I/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 93C76BT-I/SN is usually 5 days.
3.What payment methods are accepted for 93C76BT-I/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 93C76BT-I/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 93C76BT-I/SN?
93C76BT-I/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 93C76BT-I/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 93C76BT-I/SN?
For technical support, including 93C76BT-I/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 93C76BT-I/SN requirements.
6.How does Aetrix verify that 93C76BT-I/SN is sourced from the original manufacturer or authorized distributors?
All 93C76BT-I/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 93C76BT-I/SN meets industry standards.
7.What is the process for return or replacement of 93C76BT-I/SN?
All 93C76BT-I/SN units undergo pre-shipment inspection (PSI). If there is an issue with 93C76BT-I/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 93C76BT-I/SN part is unused and in its original packaging.
Return procedure for 93C76BT-I/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
93C76BT-I/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…
