3.6 USB-to-UART Serial Converter (U18)

The WBZ351 Curiosity Board has an on-board MCP2200 that acts as a USB-to-UART serial converter (U18) with hardware flow control support and enables the user through the Micro-B USB connector (J7) from the host PC. MCP2200 supports UART baud rates from 300-1000 kbps. It also provides voltage level translators on signals between the MCP2200 and WBZ351PE Module for supporting target voltage from 1.9-3.6V in case of supplying the power externally.

Table 3-6. USB Serial Converter Pin Assignment
Pin on MCP2200Pin on WBZ351PE ModuleDescription

TX

PA6, SERCOM0_PAD1

UART RX pin of the WBZ351PE Module

RX

PA5, SERCOM0_PAD0

UART TX pin of the WBZ351PE Module

RTS

PB4(1), UART_CTS

UART CTS pin of the WBZ351PE Module

CTS

PA3, UART_RTS

UART RTS pin of the WBZ351PE Module

Note:
  1. By default, the PB4 is connected to the XPRO header (J20). To use UART_CTS, the user must populate resistor (R3).