VTAP25 Change Notice - Pin assignment - PCN00003
Product(s) affected: VTAP25-MOD
Change: Core firmware from v2.4.0.0 onwards will alter the function of pins 11, 19 and 20 of a VTAP25‑MOD. Other functionality and features are unchanged.
Reason for change: Improvement to control of sleep-wake behaviour.
Impact:
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The pin out will be updated as follows (changed pins highlighted):
Pin no.
Old pin name
New pin name
Type
Function
11
NC
RFU
Input/Output
Reserved for future use. Recommend connecting this pin to host GPIO, so that its functionality can be used when supporting firmware is released.
19
WAKE
WAKE_IN
Input
Driven by the host processor to wake VTAP25 from deep sleep mode. Details with next firmware release.
20
GPIO (RFU)
WAKE_OUT
Output
Driven high by VTAP25 when a tap payload or other event is available to be read. Can also be used to wake up the host processor.
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If you were not using sleep-wake behaviour you will not notice a difference.
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If you have already finalised your design using pin 19 as a WAKE output, this can be accommodated with a custom VTAP25 configuration option, please contact vtap-support@dotorigin.com for details.
How do I tell if I have a VTAP25 module with this new pin assignment?
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All VTAP25 v1 modules supplied from June 2025 , when used with firmware version v2.4.0.0 onwards, will follow this new pin assignment.
As new firmware supporting these pins becomes available, details about their use will be found in
If you have other questions about this change please email us at vtap‑sales@dotorigin.com.
