1)I would like to ask is UC00A TxRx pins can connect to XBee TxRx pins directly??
Becoz that UC00A TxRx pins is work at 5V and XBee module is at 3.3V.
If it can, is it mean that XBee module Vcc (pin1) can only power up at 3.3V,but XBee TxRx (pin2 and pin3)can work at 5V?
Because im confusing with the "XBee Standalone Control & Monitoring" schematic part which labeled "5V USB to UART",
i know that USB to UART 5V pin is not connected with the XBee module in that schematic diagram, but not sure if both TxRx pins can be connect directly.