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PIC18F1220E/SOSQTP Datasheet(PDF) 144 Page - Microchip Technology

Part # PIC18F1220E/SOSQTP
Description  18/20/28-Pin High-Performance, Enhanced Flash Microcontrollers
PDF  308 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC18F1220E/SOSQTP Datasheet(HTML) 144 Page - Microchip Technology

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PIC18F1220/1320
DS39605F-page 142
© 2007 Microchip Technology Inc.
FIGURE 16-4:
ASYNCHRONOUS TRANSMISSION (BACK TO BACK)
TABLE 16-5:
REGISTERS ASSOCIATED WITH ASYNCHRONOUS TRANSMISSION
Transmit Shift Reg.
Write to TXREG
BRG Output
(Shift Clock)
RB1/AN5/TX/
TXIF bit
(Interrupt Reg. Flag)
TRMT bit
(Transmit Shift
Reg. Empty Flag)
Word 1
Word 2
Word 1
Word 2
Stop bit
Start bit
Transmit Shift Reg.
Word 1
Word 2
bit 0
bit 1
bit 7/8
bit 0
Note:
This timing diagram shows two consecutive transmissions.
1 TCY
1 TCY
CK/INT1 (pin)
Start bit
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on
POR, BOR
Value on
all other
Resets
INTCON
GIE/GIEH
PEIE/GIEL
TMR0IE
INT0IE
RBIE
TMR0IF
INT0IF
RBIF
0000 000x
0000 000u
PIR1
—
ADIF
RCIF
TXIF
—
CCP1IF
TMR2IF
TMR1IF
-000 -000
-000 -000
PIE1
—
ADIE
RCIE
TXIE
—
CCP1IE
TMR2IE
TMR1IE
-000 -000
-000 -000
IPR1
—
ADIP
RCIP
TXIP
—
CCP1IP
TMR2IP
TMR1IP
-111 -111
-111 -111
RCSTA
SPEN
RX9
SREN
CREN
ADDEN
FERR
OERR
RX9D
0000 -00x
0000 -00x
TXREG
EUSART Transmit Register
0000 0000
0000 0000
TXSTA
CSRC
TX9
TXEN
SYNC
SENDB
BRGH
TRMT
TX9D
0000 0010
0000 0010
BAUDCTL
—
RCIDL
—
SCKP
BRG16
—
WUE
ABDEN
-1-1 0-00
-1-1 0-00
SPBRGH
Baud Rate Generator Register High Byte
0000 0000
0000 0000
SPBRG
Baud Rate Generator Register Low Byte
0000 0000
0000 0000
Legend:
x
= unknown, – = unimplemented locations read as ‘0’. Shaded cells are not used for asynchronous transmission.



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