5V vs 3.3V devices

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cross mob
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Hello,

Infineon sells the xc800 controllers in 5V and 3.3V versions. According to the users manual both devices have an internal regulator of 2.5V for internal operation.
The 3.3V and 5V is only used for I/O. Is it possible to use the 3.3V device on 5V and vice versa?
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3 Replies
chismo
Employee
Employee
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Hi Marc,

This is not recommended and the behaviour cannot be guaranteed if used in such way.
Reason is that the on-chip embedded voltage regulator (EVR) is configured differently during production. There is no way to reconfigure the EVR on the field.

Regards,
Min Wei
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User20807
Level 1
Level 1
Hi Men Wei
What ist the exact difference between the two configurations?
Regards Martin
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User21302
Level 1
Level 1
A 3.3V powered LTC2862 can still accept the differential output voltage from a 5V powered LTC2862, and vice versa. In the RS485 standard a maximum of 5V differential output voltage is permitted.
Also if you need renovation contractor check here.
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