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PIC16LC773-04/SP Datasheet(PDF) 103 Page - Microchip Technology

Part # PIC16LC773-04/SP
Description  28/40-Pin, 8-Bit CMOS Microcontrollers w/ 12-Bit A/D
PDF  200 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC16LC773-04/SP Datasheet(HTML) 103 Page - Microchip Technology

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PIC16C77X
© 1999 Microchip Technology Inc.
Advance Information
DS30275A-page 103
FIGURE 9-4:
ASYNCHRONOUS TRANSMISSION
FIGURE 9-5:
ASYNCHRONOUS TRANSMISSION (BACK TO BACK)
TABLE 9-6
REGISTERS ASSOCIATED WITH ASYNCHRONOUS TRANSMISSION
Address
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
0Ch
PIR1
PSPIF(1)
ADIF
RCIF
TXIF
SSPIF
CCP1IF
TMR2IF
TMR1IF
0000 0000
0000 0000
18h
RCSTA
SPEN
RX9
SREN
CREN
ADDEN
FERR
OERR
RX9D
0000 000x
0000 000x
19h
TXREG
USART Transmit Register
0000 0000
0000 0000
8Ch
PIE1
PSPIE(1)
ADIE
RCIE
TXIE
SSPIE
CCP1IE
TMR2IE
TMR1IE
0000 0000
0000 0000
98h
TXSTA
CSRC
TX9
TXEN
SYNC
—
BRGH
TRMT
TX9D
0000 -010
0000 -010
99h
SPBRG
Baud Rate Generator Register
0000 0000
0000 0000
Legend: x = unknown, - = unimplemented locations read as '0'. Shaded cells are not used for Asynchronous Transmission.
Note 1:
Bits PSPIE and PSPIF are reserved on the 28-pin devices, always maintain these bits clear.
WORD 1
Stop Bit
WORD 1
Transmit Shift Reg
Start Bit
Bit 0
Bit 1
Bit 7/8
Write to TXREG
Word 1
BRG output
(shift clock)
RC6/TX/CK (pin)
TXIF bit
(Transmit buffer
reg. empty flag)
TRMT bit
(Transmit shift
reg. empty flag)
Transmit Shift Reg.
Write to TXREG
BRG output
(shift clock)
RC6/TX/CK (pin)
TXIF bit
(interrupt reg. flag)
TRMT bit
(Transmit shift
reg. empty flag)
Word 1
Word 2
WORD 1
WORD 2
Start Bit
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.



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