RP2350 A4 Spin is Perfect for this logic analyzer (no E9 & 5V-Tolerant)!

[frohro]

When the RP2350 came out in 2024, this community was saddened by the E9 latch-up bug. Now the new RP2350 A4 version is available that fixes the E9 bug, but it also adds 5V-tolerant GPIO! This makes the level shifter hardware unneeded for basic logic analysis of 5V systems!

[UffeJakobsen]

Now the new RP2350 A4 version is available that fixes the E9 bug, but it also adds 5V-tolerant GPIO! This makes the level shifter hardware unneeded for basic logic analysis of 5V systems!

Well not really... with the new A4 there is (still) a relatively great risk that you'll kill you Pico if the GPIOs are exposed to 5V without the Pico itself being powered...

See:
#142 (comment)
#142 (comment)