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16F648 Datasheet(PDF) 87 Page - Microchip Technology

Part # 16F648
Description  Flash-Based, 8-Bit CMOS Microcontrollers with nanoWatt Technology
PDF  180 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

16F648 Datasheet(HTML) 87 Page - Microchip Technology

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© 2009 Microchip Technology Inc.
DS40044G-page 87
PIC16F627A/628A/648A
TABLE 12-9:
REGISTERS ASSOCIATED WITH SYNCHRONOUS MASTER TRANSMISSION
FIGURE 12-8:
SYNCHRONOUS TRANSMISSION
FIGURE 12-9:
SYNCHRONOUS TRANSMISSION (THROUGH TXEN)
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on
POR
Value on all
other Resets
0Ch
PIR1
EEIF
CMIF
RCIF
TXIF
—
CCP1IF TMR2IF TMR1IF 0000 -000
0000 -000
18h
RCSTA
SPEN
RX9
SREN CREN
ADEN
FERR
OERR
RX9D
0000 000x
0000 000x
19h
TXREG USART Transmit Data Register
0000 0000
0000 0000
8Ch
PIE1
EEIE
CMIE
RCIE
TXIE
—
CCP1IE TMR2IE TMR1IE 0000 -000
0000 -000
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, read as ‘0’. Shaded cells are not used for synchronous master transmission.
bit 0
bit 1
bit 7
Word 1
Q1Q2Q3Q4Q1Q2Q3Q4Q1Q2Q3Q4Q1Q2Q3Q4Q1Q2Q3Q4
Q3Q4 Q1Q2Q3Q4 Q1Q2Q3Q4Q1Q2Q3Q4Q1Q2Q3Q4Q1Q2Q3Q4Q1Q2Q3Q4
bit 2
bit 0
bit 1
bit 7
RB1/RX/DT pin
RB2/TX/CK pin
Write to
TXREG Reg
TXIF bit
(Interrupt Flag)
TRMT
TXEN bit
‘1’
‘1’
Word 2
TRMT bit
Write Word 1
Write Word 2
Note:
Sync Master Mode; SPBRG = 0. Continuous transmission of two 8-bit words.
RB1/RX/DT pin
RB2/TX/CK pin
Write to
TXREG Reg
TXIF bit
TRMT bit
bit 0
bit 1
bit 2
bit 6
bit 7
TXEN bit



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