• 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...
  • MCB2300 3.3 and 5 volts on board
    Dear All, I see in bottom to the MCB2300 (LPCR2378) and between INT0 button and buzzer the exits for 3.3V, 5V and GND. I have measured these exits (3.3 + GND and 5 + GND) with test multimeter but...
  • 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...
  • LPC213X :Measurement range 0 to 3 V?why not 0 to 3.3?
    when I read the datasheet of LPC213X. I find this description about it's AD. Measurement range 0 to 3 V why is it measurement range from VSS to VREF. If I set VSS=0v and VREF=3.3(the power supply...
  • drive mmc/sd card with SPI port
    dear sirs i want to use the rl-arm library for mmc/sd card , well thats very good . i could use it with the LPC2368 SD PORT but i want to use it with SPI port who can help me to do this ? also i want...