PIC32MX5XX_11 Datasheet, PDF (148/256 Pages) Microchip Technology – High-Performance, USB, CAN and Ethernet 32-bit Flash Microcontrollers

PIC32MX5XX/6XX/7XX
Figure 19-2 and Figure 19-3 illustrate typical receive
and transmit timing for the UART module.
FIGURE 19-2:
UART RECEPTION
Char 1
Char 2-4
Read to
UxRXREG
Char 5-10
Char 11-13
UxRX
RIDLE
Start 1
Stop Start 2
Stop 4
Start 5
Stop 10 Start 11
Stop 13
OERR
UxRXIF
URXISEL = 00
UxRXIF
URXISEL = 01
UxRXIF
URXISEL = 10
Cleared by
Software
Cleared by
Software
Cleared by
Software
FIGURE 19-3:
Write to
UxTXREG
BCLK/16
(Shift Clock)
UxTX
TRANSMISSION (8-BIT OR 9-BIT DATA)
8 into TxBUF
TSR
Start
Bit 0
Bit 1
UxTXIF
UTXISEL = 00
UxTXIF
UTXISEL = 01
UxTXIF
UTXISEL = 10
Pull from Buffer
Stop
Start
Bit 1
DS61156G-page 148
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