wrting to BKPSRAM with 3.3 volts applied to v-bat

using the stm32f2xx_hal library I seem to be able to enable access to the BKPSRAM with __HAL_RCC_PWR_CLK_ENABLE(); HAL_PWR_EnableBkUpAccess(); __BKPSRAM_CLK_ENABLE(); Once this is done I can...
wrting to BKPSRAM with 3.3 volts applied to v-bat

using the stm32f2xx_hal library I seem to be able to enable access to the BKPSRAM with __HAL_RCC_PWR_CLK_ENABLE(); HAL_PWR_EnableBkUpAccess(); __BKPSRAM_CLK_ENABLE(); Once this is done I can...
LPC 2129 3.3 Vdda not connected

I have designed a pcb to run the LPC 2129 in the LQFP64(64 pin) package. As the system was too congested i decided to skip the 3.3 Vdda connection believing it to be required only for the ADC as a reference...
LPC 2129 3.3 Vdda not connected

I have designed a pcb to run the LPC 2129 in the LQFP64(64 pin) package. As the system was too congested i decided to skip the 3.3 Vdda connection believing it to be required only for the ADC as a reference...
Using P0 port for driving +3.3 V Devices

Hello, I have a question. Can we use P0 port of 8051 for I/O of an external device which has +3.3V ratings for its I/O? Thanks