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AIROC™ Bluetooth Forum Discussions

GrCa_1363456
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Regarding the Port Signals on the CYW20721 (Px.x) along with tables 9, 16 and 17 from the CYW20721 datasheet…

 

What are the absolute voltage ratings for any GPIO Port Pin (Px.x)?

Table 9 does not appear to list Absolute Maximum ratings for individual port pins Px.x.

Table 17 lists “GPIO input voltage” which states, “Always lower that avddBAT”.

Is there a requirement, assumed or stated, for voltage potential between VDDBAT and VDDIO?

If a port is powered by 1.8V (VDDIO) nominal what is minimum and maximum voltages to pins on that port? 

If a port is powered by 3.0V (VDDIO) nominal what is minimum and maximum voltages to pins on that port?
Does either answer change if VBAT is either 1.8V or 3.0V?

 

Greg

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DheerajPK_41
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Hi,

The max & min voltages can be found in Table 12. Recommended Operating Conditions. 

Please check Table 5. 40-Pin QFN and WLCSP GPIOs for the voltage domain. 

https://www.infineon.com/dgdl/Infineon-CYW20721_Enhanced_Low_Power_BR_EDR_BLE_Bluetooth_5.0_SOC_for_...

Thanks,

-Dheeraj.P.K

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GrCa_1363456
Level 5
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Level 5

Dheerraj,

Table 12 is for the power inputs. I'm looking for Absolute Maximum Ratings for the signal inputs (GPIO Port Pins).

GrCa_1363456_0-1658151522438.png

 

 

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