PIC18F25J50 MICROCHIP [Microchip Technology], PIC18F25J50 Datasheet - Page 334
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PIC18F25J50
Manufacturer Part Number
PIC18F25J50
Description
28/44-Pin, Low-Power, High-Performance USB Microcontrollers with nanoWatt XLP Technology
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.PIC18F25J50.pdf
(562 pages)
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PIC18F46J50 FAMILY
FIGURE 20-3:
FIGURE 20-4:
FIGURE 20-5:
DS39931D-page 334
Note:
(Interrupt Reg. Flag)
Reg. Empty Flag)
Reg. Empty Flag)
Write to TXREGx
(Transmit Buffer
Reg. Empty Flag)
Write to TXREGx
(Transmit Shift
(Transmit Shift
BRG Output
(Shift Clock)
BRG Output
(Shift Clock)
TRMT bit
TXx (pin)
TXxIF bit
TRMT bit
TXx (pin)
TXxIF bit
This timing diagram shows two consecutive transmissions.
BRG16
TXxIE
Interrupt
1 T
EUSART TRANSMIT BLOCK DIAGRAM
ASYNCHRONOUS TRANSMISSION
ASYNCHRONOUS TRANSMISSION (BACK-TO-BACK)
SPBRGHx
CY
Baud Rate Generator
Word 1
Transmit Shift Reg
Transmit Shift Reg.
Word 1
TXxIF
Word 1
TXEN
Word 1
1 T
Baud Rate CLK
SPBRGx
CY
Start bit
Start bit
Word 2
MSb
(8)
1 T
CY
bit 0
bit 0
TXREGx Register
TSR Register
TX9D
bit 1
TX9
8
Data Bus
Word 1
bit 1
Word 1
LSb
0
TRMT
bit 7/8
bit 7/8
and Control
Pin Buffer
Word 2
Transmit Shift Reg.
Stop bit
SPEN
2011 Microchip Technology Inc.
Stop bit
Start bit
TXx pin
Word 2
bit 0
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