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93AA56/SN
Microchip Technology
IC EEPROM 2KBIT MICROWIRE 8SOIC
1990 Pcs New Original In Stock
EEPROM Memory IC 2Kbit Microwire 2 MHz 8-SOIC
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5.0 / 5.0
- (191 Ratings)
93AA56/SN
Product Overview
13021178
DiGi Electronics Part Number
93AA56/SN-DGManufacturer
Microchip Technology
93AA56/SN
Description
IC EEPROM 2KBIT MICROWIRE 8SOICInventory
1990 Pcs New Original In Stock
EEPROM Memory IC 2Kbit Microwire 2 MHz 8-SOIC
Quantity
Minimum 1
Minimum 1
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93AA56/SN Technical Specifications
Category
Memory, Memory
Packaging
Tube
Series
-
Packaging
Tube
Part 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
1.8V ~ 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
93AA56
Datasheet & Documents
HTML Datasheet
93AA56/SN-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
3 (168 Hours)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.32.0051
Additional Information
Other Names
93AA56/SN-NDR
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
網站操作非常直觀，讓我輕鬆完成所有購買流程，價格也很有競爭力。
грудня 02, 2025
Leurs délais d’expédition sont parmi les meilleurs que j’ai rencontrés en ligne.
грудня 02, 2025
Le rapport qualité-prix chez DiGi Electronics est exceptionnel, et leur support après-vente est toujours fiable.
грудня 02, 2025
They back up their products with excellent customer service.
грудня 02, 2025
DiGi Electronics made my urgent order a smooth and prompt experience.
грудня 02, 2025
Their commitment to consistent quality keeps me as a loyal customer.
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Frequently Asked Questions (FAQ)
What are the key design-in risks when integrating the 93AA56/SN EEPROM in low-voltage battery-powered systems operating near 1.8V?
The 93AA56/SN supports a supply voltage down to 1.8V, but designers must account for potential timing violations if the power supply sags during write cycles, which can last up to 10ms. To mitigate data corruption risk, implement brown-out detection or delay write operations until the system voltage is stable. Also ensure the MCU’s I/O levels remain compliant with the 93AA56/SN’s Microwire interface thresholds at low VCC, as signal margins shrink below 2.3V. Consider using an external voltage supervisor for reliable operation in energy-constrained applications.
Can the 93AA56/SN safely replace the discontinued 93C56B on an existing PCB layout, and what compatibility issues should I watch for?
The 93AA56/SN is pin-compatible with the 93C56B in the 8-SOIC package, making it a viable drop-in replacement. However, verify the Microwire protocol timing: the 93AA56/SN uses a Command-Address-Data format that may differ slightly from legacy 93C56 variants. Update firmware to match the 93AA56/SN’s opcode structure, particularly for write-enable and erase operations. Also confirm that the host controller supports clock frequencies up to 2 MHz and that pull-up resistors on control lines are removed to prevent bus contention.
How does the 93AA56/SN’s 10ms write cycle time impact real-time system performance, and how can I minimize CPU blocking?
The 93AA56/SN requires up to 10ms per write cycle, during which the device is internally busy and cannot accept new commands. To avoid CPU lockup, use polling on the data line (SO) or implement a software timeout instead of busy-waiting. Alternatively, leverage write cycle predictability by scheduling EEPROM writes during idle periods or state transitions. For frequent updates, consider buffering changes in RAM and committing them in batches to reduce total write overhead and wear.
What are the reliability concerns when using the 93AA56/SN in industrial environments near the upper end of its 70°C operating temperature limit?
While the 93AA56/SN is rated for up to 70°C, prolonged operation near this limit accelerates wear on the EEPROM cells, potentially reducing retention below the 200-year spec. If ambient temperatures approach 70°C, derate system lifetime expectations and limit write cycles using wear-leveling techniques, even for small data sets. Avoid placing the 93AA56/SN near heat sources on the PCB, and consider selecting higher-temperature variants like the 93AA56C/SN if long-term reliability in thermally demanding environments is critical.
How does the 93AA56/SN compare to the STMicroelectronics M95020 in terms of supply voltage flexibility and interface compatibility?
The 93AA56/SN and M95020 both support wide supply ranges (1.8V–5.5V), but the 93AA56/SN uses Microwire interface, requiring three wires (SK, SI, SO), while the M95020 uses SPI, which is more commonly supported on modern microcontrollers. If migrating from one to the other, expect firmware changes due to different command sets and timing. The M95020 offers faster write times (5ms typical), but the 93AA56/SN may be preferred in legacy designs already using Microwire. Choose the 93AA56/SN when sticking with established architectures to minimize redesign risk.
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.
93AA56/SN CAD Models
Microchip Technology 93AA56/SN PCB symbols & footprints
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