PIC32MX120F032B-I 查看數據表（PDF） - Microchip Technology

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PIC32MX120F032B-I

32-bit Microcontrollers (up to 128 KB Flash and 32 KB SRAM) with Audio and Graphics Interfaces, USB, and Advanced Analog

Microchip Technology 

PIC32MX1XX/2XX

Figure 18-2 and Figure 18-3 illustrate typical receive

and transmit timing for the UART module.

FIGURE 18-2:

UART RECEPTION

Read to

UxRXREG

UxRX

Char 1

Char 2-4

Start 1

Stop Start 2

Stop 4

Char 5-10

Char 11-13

Start 5 Stop 10 Start 11 Stop 13

RIDLE

OERR

UxRXIF

URXISEL = 00

UxRXIF

URXISEL = 01

UxRXIF

URXISEL = 10

Cleared by

Software

Cleared by

Software

Cleared by

Software

FIGURE 18-3:

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

DS61168C-page 184

Preliminary

© 2011 Microchip Technology Inc.

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