Datasheet

PIC32MX5XX/6XX/7XX
DS60001156J-page 204  2009-2016 Microchip Technology Inc.
Figure 20-2 and Figure 20-3 illustrate typical receive
and transmit timing for the UART module.
FIGURE 20-2: UART RECEPTION
FIGURE 20-3: TRANSMISSION (8-BIT OR 9-BIT DATA)
Start 1
Stop
Start 2 Stop 4
Start 5
Stop 10
Start 11
Stop 13
Cleared by
Software
Read to
UxRXREG
UxRX
RIDLE
OERR
UxRXIF
URXISEL =
00
UxRXIF
URXISEL =
01
UxRXIF
URXISEL =
10
Char 1
Char 2-4
Char 5-10
Char 11-13
Cleared by
Software
Cleared by
Software
StartStart Bit 0 Bit 1 Stop
Write to
TSR
BCLK/16
(Shift Clock)
UxTX
UxTXIF
UxTXIF
UTXISEL = 00
Bit 1
UxTXREG
UTXISEL = 01
UxTXIF
UTXISEL = 10
8 into TxBUF
Pull from Buffer