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93LC56T/SN
Microchip Technology
IC EEPROM 2KBIT MICROWIRE 8SOIC
15859 Pcs New Original In Stock
EEPROM Memory IC 2Kbit Microwire 2 MHz 8-SOIC
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5.0 / 5.0
- (433 Ratings)
93LC56T/SN
Product Overview
1257920
DiGi Electronics Part Number
93LC56T/SN-DGManufacturer
Microchip Technology
93LC56T/SN
Description
IC EEPROM 2KBIT MICROWIRE 8SOICInventory
15859 Pcs New Original In Stock
EEPROM Memory IC 2Kbit Microwire 2 MHz 8-SOIC
Quantity
Minimum 1
Minimum 1
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93LC56T/SN Technical Specifications
Category
Memory, Memory
Packaging
Tape & Reel (TR)
Series
-
Product Status
Active
DiGi-Electronics Programmable
Verified
Memory Type
Non-Volatile
Memory Format
EEPROM
Technology
EEPROM
Memory Size
2Kbit
Memory Organization
256 x 8, 128 x 16
Memory Interface
Microwire
Clock Frequency
2 MHz
Write Cycle Time - Word, Page
10ms
Voltage - Supply
2.5V ~ 5.5V
Operating Temperature
0°C ~ 70°C (TA)
Mounting Type
Surface Mount
Package / Case
8-SOIC (0.154", 3.90mm Width)
Supplier Device Package
8-SOIC
Base Product Number
93LC56
Datasheet & Documents
HTML Datasheet
93LC56T/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
93LC56T/SN-NDR
Standard Package
3,300
Alternative Parts
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UNIT PRICE
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Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
문의에 대해 세심하게 답변해주셔서 쇼핑하는 동안 큰 불편이 없었어요. 배송도 신속했어요.
Dec 02, 2025
품질 좋은 제품과 친절한 고객 서비스에 무한 감탄했습니다.
Dec 02, 2025
Grâce à leur site, nous avons accès à des solutions économiques en quelques clics.
Dec 02, 2025
Une expérience d’achat très positive avec DiGi Electronics, prix avantageux et service après-vente impeccable.
Dec 02, 2025
DiGi Electronics' support team is always willing to help resolve any issues.
Dec 02, 2025
I trust DiGi Electronics for dependable products that perform flawlessly.
Dec 02, 2025
Excellent after-sales service makes me trust DiGi Electronics even more.
Dec 02, 2025
Customer service representatives are knowledgeable and helpful.
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Frequently Asked Questions (FAQ)
What are the key design risks when replacing the 93LC56T/SN with a similar EEPROM like the M93C56-RMN6TP in a 3.3V industrial control system?
When substituting the 93LC56T/SN with the M93C56-RMN6TP, ensure voltage compatibility—both support 2.5V to 5.5V, so 3.3V operation is safe—but verify timing margins: the M93C56 has a slightly slower maximum clock frequency (1 MHz vs. 2 MHz on the 93LC56T/SN), which may cause communication failures in high-speed Microwire interfaces. Also, confirm pinout alignment; while both are 8-SOIC, the M93C56 uses a different instruction set (SPI-like vs. true Microwire), requiring firmware changes. Always validate signal integrity under worst-case load conditions to avoid data corruption during write cycles.
How does the 10ms write cycle time of the 93LC56T/SN impact real-time system responsiveness, and what mitigation strategies should be considered?
The 10ms write cycle time of the 93LC56T/SN can block processor execution if not handled asynchronously, especially in time-critical applications like motor control or sensor logging. To mitigate this, implement non-blocking writes using interrupts or DMA, or buffer data in RAM and batch writes during idle periods. Avoid frequent single-byte updates; instead, use page writes (where supported) or consolidate data into larger blocks. Also, ensure your MCU’s watchdog timer accounts for this delay to prevent unintended resets during EEPROM programming.
Can the 93LC56T/SN be safely used in automotive under-hood applications given its 0°C to 70°C operating temperature rating?
No, the 93LC56T/SN is not suitable for direct under-hood automotive use due to its limited 0°C to 70°C temperature range. Automotive environments often exceed 85°C, risking data retention failure or write errors. For such applications, consider industrial or automotive-grade alternatives like the 93LC56CT-I/SN (which shares the same core but may have extended temp variants) or switch to AEC-Q100 qualified EEPROMs such as the M93C56-WMN6TP (-40°C to +125°C). Always derate and include thermal margin in enclosure design if near-limit operation is unavoidable.
What integration challenges arise when migrating from a parallel EEPROM to the 93LC56T/SN in a legacy embedded design with limited GPIOs?
Migrating to the 93LC56T/SN from a parallel EEPROM reduces pin count significantly (4-wire Microwire vs. 11+ pins), but introduces timing sensitivity and protocol complexity. Ensure your microcontroller supports precise Microwire timing—delays under 1 µs may be required—and avoid bit-banging on low-end MCUs without hardware SPI/Microwire peripherals. Also, note that the 93LC56T/SN lacks built-in write protection beyond software commands; add external circuitry (e.g., a supervisor IC) if power-fail protection during writes is critical to prevent corruption.
Is the 93LC56T/SN a drop-in replacement for older 93C46-based designs, and what firmware adjustments are typically needed?
The 93LC56T/SN is not a direct drop-in for 93C46 designs despite similar naming. While both use Microwire interfaces, the 93LC56T/SN has double the memory (2Kbit vs. 1Kbit) and different organization (256x8 or 128x16 vs. 128x8), requiring address bit re-mapping in firmware. Additionally, opcode structures differ slightly—verify instruction set compatibility in Microchip’s documentation. Always revalidate read/write sequences and endurance assumptions; although both offer ~1 million write cycles, actual performance depends on VCC stability and write frequency. Test thoroughly under voltage brown-out conditions to ensure robustness.
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.
93LC56T/SN CAD Models
Microchip Technology 93LC56T/SN PCB symbols & footprints
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