I2C/SPI Product Guide
Not sure which tool is right for you? The following table breaks down the key features for our I2C/SPI Total Phase products. Detailed technical information for all these devices can be found in their respective datasheets. If you need assistance choosing the right I2C or SPI host adapter, please review our article, Choosing the Right Total Phase Host Adapter.
Aardvark I2C/SPI Host Adapter
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Cheetah SPI Host Adapter
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Promira Serial Platform
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Beagle I2C/SPI Protocol Analyzer
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Part Number
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TP240141 | TP280121 | TP500110 | TP320121 |
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Datasheet
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Datasheet | Datasheet | Datasheet | Datasheet |
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I2C Master
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Up to 800 kHz 1 | Up to 3.4 MHz | ||
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I2C Slave
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Up to 800 kHz 1 | Up to 3.4 MHz | ||
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SPI Master
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Up to 8 MHz 2 | Up to 40 MHz+ 3 | Up to 80 MHz | |
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SPI Slave
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Up to 4 MHz 2 | Up to 20 MHz | ||
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I2C Analyzer
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Up to 5 MHz | Up to 4 MHz | ||
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SPI Analyzer
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Up to 40 MHz | Up to 24 MHz 4 | ||
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GPIO
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Up to 6 | Up to 16 | ||
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Slave Select
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1 | Up to 3 | Up to 8 5 | |
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Voltage Level Shifting
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Accessory Board | Accessory Board | Built-in 6 | Accessory Board |
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Single/Dual/Quad SPI
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Single SPI | Single SPI | Single/Dual/Quad SPI 5 | |
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Gigabit Ethernet Connectivity
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USB Bus Powered Device
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Full-Speed | High-Speed | High-Speed | High-Speed |
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Windows, Linux, macOS Support
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Software GUIs
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Royalty-Free APIs
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1 Actual system bus speed may vary as a function of capacitance.
2 The quoted values are intra-byte speeds. Please refer to the datasheet for timing restrictions.
3 Customers have successfully over-clocked the Cheetah SPI adapter to 50 MHz.
4 Actual SPI capture performance is dependent on CPU speed and SPI bus throughput. 24 MHz SPI capture has been tested for typical applications (e.g., captures of a few hundred SPI packets). Depending on user configuration, the maximum achievable capture throughput for continuous streaming applications may be less than 24 MHz.
5 Refers to SPI Active Mode, not SPI Analysis.
6 Available for Active use, coming soon to Analysis Applications.