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93LC46BX-I/SN
Microchip Technology
IC EEPROM 1KBIT MICROWIRE 8SOIC
5643 Pcs New Original In Stock
EEPROM Memory IC 1Kbit Microwire 2 MHz 8-SOIC
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5.0 / 5.0
- (342 Ratings)
93LC46BX-I/SN
Product Overview
1413349
DiGi Electronics Part Number
93LC46BX-I/SN-DGManufacturer
Microchip Technology
93LC46BX-I/SN
Description
IC EEPROM 1KBIT MICROWIRE 8SOICInventory
5643 Pcs New Original In Stock
EEPROM Memory IC 1Kbit Microwire 2 MHz 8-SOIC
Quantity
Minimum 1
Minimum 1
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93LC46BX-I/SN Technical Specifications
Category
Memory, Memory
Packaging
Tube
Series
-
Product Status
Active
DiGi-Electronics Programmable
Verified
Memory Type
Non-Volatile
Memory Format
EEPROM
Technology
EEPROM
Memory Size
1Kbit
Memory Organization
64 x 16
Memory Interface
Microwire
Clock Frequency
2 MHz
Write Cycle Time - Word, Page
6ms
Voltage - Supply
2.5V ~ 5.5V
Operating Temperature
-40°C ~ 85°C (TA)
Mounting Type
Surface Mount
Package / Case
8-SOIC (0.154", 3.90mm Width)
Supplier Device Package
8-SOIC
Base Product Number
93LC46
Datasheet & Documents
HTML Datasheet
93LC46BX-I/SN-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.32.0051
Additional Information
Other Names
93LC46BX-I/SNG-DG
Standard Package
100
Alternative Parts
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
грудня 02, 2025
客服人員非常友善，讓我感受到貼心的服務，值得推薦！
грудня 02, 2025
高品質の製品と優しいスタッフに大満足です。おすすめできるお店です。
грудня 02, 2025
Reliability is a cornerstone of DiGi Electronics, and they consistently exceed my expectations.
грудня 02, 2025
DiGi Electronics takes pride in delivering complete and well-packaged orders.
грудня 02, 2025
DiGi Electronics’ large inventory ensures we always find what we’re looking for.
грудня 02, 2025
The packaging was superb—everything arrived in perfect condition thanks to their sturdy and well-thought-out packaging materials.
грудня 02, 2025
The extensive options available cater to both casual users and tech enthusiasts alike.
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Frequently Asked Questions (FAQ)
What are the key design considerations when integrating the 93LC46BX-I/SN into a low-power embedded system with intermittent power cycles?
When using the 93LC46BX-I/SN in low-power systems prone to unexpected power loss, ensure that write operations are carefully managed to avoid data corruption. Since the 93LC46BX-I/SN has a 6ms write cycle time, the system must hold power or use backup capacitance during writes. Monitor the power supply voltage to prevent writes below the minimum 2.5V operating threshold, as this could corrupt memory. Additionally, implement firmware safeguards—such as write sequencing checks and status polling—to confirm write completion before entering sleep or shutdown modes. Consider minimizing write frequency by buffering data in volatile memory and writing in bursts to reduce exposure to power interruption risks.
Can the 93LC46BX-I/SN replace the 93C46B in an existing Microwire-based design without hardware or timing changes?
Yes, the 93LC46BX-I/SN is a direct replacement for the 93C46B in most designs, as both share identical memory organization (64 x 16), Microwire interface, 2 MHz clock support, and 8-SOIC packaging. Key differences include the 93LC46BX-I/SN's lower 2.5V voltage tolerance vs. the 93C46B's 4.5V minimum, making it suitable for 3.3V systems. However, verify timing compatibility: while clock frequency and write cycle times are similar, ensure that your controller provides proper instruction op-codes and idle periods between commands as defined in the 93LC46BX-I/SN datasheet to avoid unintended writes, especially if legacy firmware was designed for older variants.
How does the 6ms write cycle time of the 93LC46BX-I/SN impact system responsiveness, and what strategies can mitigate performance bottlenecks?
The 6ms write cycle time of the 93LC46BX-I/SN can block system operations if software waits polling for completion. To maintain responsiveness, use the ready/busy (DATA) pin monitoring instead of fixed delays—this allows the host MCU to perform other tasks during writes. Alternatively, implement write coalescing: buffer small data updates in RAM and write them in fewer, consolidated operations. Avoid frequent single-word writes in time-critical loops. Also, ensure your microcontroller's I/O does not toggle the CLK line during the write cycle, as noise can disrupt the internal programming algorithm and cause data errors.
Is the 93LC46BX-I/SN suitable for industrial motor control applications with high EMI, and what PCB layout practices improve reliability?
The 93LC46BX-I/SN is rated for -40°C to 85°C operation and is viable in industrial motor control environments, but EMI can corrupt Microwire communication. To improve reliability, route the SK (clock), SI (data in), and CS pins as short as possible, avoiding parallel runs with high-current traces. Use a local 100nF ceramic decoupling capacitor close to VCC and ground pins, and consider adding a 1–10kΩ series resistor on the input lines for EMI filtering. Shield critical sections if necessary. Since the 93LC46BX-I/SN lacks error correction, ensure software verifies critical writes through read-back routines, especially in systems with variable noise conditions.
How does the 93LC46BX-I/SN compare to the AT93C46D-10SU2-7 in terms of supply voltage and compatibility for battery-powered IoT sensors?
The 93LC46BX-I/SN supports 2.5V to 5.5V supply, making it better suited for single-cell Li-ion or 3.3V battery-powered IoT sensors than the AT93C46D-10SU2-7, which typically requires ≥ 4.5V. Both offer Microwire interface and 1Kbit density, but the 93LC46BX-I/SN enables longer battery life by operating reliably at lower voltages. However, verify timing: the AT93C46D may have faster write cycles (e.g., 3ms) versus the 93LC46BX-I/SN's 6ms. If power is constrained and write latency matters, assess whether the 93LC46BX-I/SN’s write duration impacts sleep/wake efficiency. Use software write management and power-on initialization checks to maintain compatibility when switching from the AT93C46D.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
93LC46BX-I/SN CAD Models
Microchip Technology 93LC46BX-I/SN PCB symbols & footprints
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