sbc fs26 LDO and GPIO1/2 in non-OTP mode

[Zhougw]

sbc:FS2633D

1.  what is the default state of LDO and GPIO? it can be configed in OTP mode, In non-OTP mode(for example normal mode), what is the voltage of LDO pin(3.3V/5V), GPIO1/2 is input or output?

2. since OTP mode should not be used in production applications, usage of LDO and GPIO is limited?

[TomasVaverka · Accepted solution]

Hi Zhou,

Once you burn an OTP configuration permanently into the fuses, the SBC powers up with OTP configuration burned.

For example if VLDO1_OTP = 0, the LDO1 voltage in normal mode will be 3.3V. If VLDO1_OTP = 1, the LDO1 voltage in normal mode will be 5V.

GPIO1 configuration is selectable using the GPIO1STAGE_OTP[1:0] bits.

BR, Tomas