PIC16LC63A-04 Datasheet, PDF (73/184 Pages) Microchip Technology – 8-Bit CMOS Microcontrollers with A/D Converter

PIC16C63A/65B/73B/74B
TABLE 11-5: REGISTERS ASSOCIATED WITH SYNCHRONOUS MASTER 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
0Bh,8Bh
0Ch
INTCON GIE PEIE T0IE INTE RBIE T0IF INTF RBIF 0000 000x
PIR1
PSPIF⁽¹⁾ ADIF⁽²⁾ RCIF TXIF SSPIF CCP1IF TMR2IF TMR1IF 0000 0000
18h
RCSTA SPEN RX9 SREN CREN — FERR OERR RX9D 0000 -00x
19h
TXREG USART Transmit Register
0000 0000
8Ch
PIE1
PSPIE⁽¹⁾ ADIE⁽²⁾ RCIE TXIE SSPIE CCP1IE TMR2IE TMR1IE 0000 0000
98h
TXSTA CSRC TX9 TXEN SYNC — BRGH TRMT TX9D 0000 -010
99h
SPBRG Baud Rate Generator Register
0000 0000
Legend: u = unchanged, x = unknown, - = unimplemented, read as '0'.
Shaded cells are not used for synchronous master transmission.
Note 1: Bits PSPIE and PSPIF are reserved on the PIC16C63A/73B; always maintain these bits clear.
2: Bits ADIE and ADIF are reserved on the PIC16C63A/65B; always maintain these bits clear.
0000 000u
0000 0000
0000 -00x
0000 0000
0000 0000
0000 -010
0000 0000
FIGURE 11-6:
SYNCHRONOUS TRANSMISSION
Q1Q2 Q3Q4 Q1 Q2Q3 Q4Q1 Q2Q3 Q4Q1 Q2Q3 Q4Q1 Q2 Q3Q4
RC7/RX/DT
pin
RC6/TX/CK
pin
Write to
TXREG reg
TXIF bit
(Interrupt Flag)
TRMT bi^Tt^RMT
Write word1
bit 0
bit 1
bit 2
Word 1
Write word2
Q3Q4 Q1Q2 Q3Q4 Q1Q2 Q3Q4 Q1Q2 Q3 Q4Q1 Q2Q3 Q4Q1 Q2Q3 Q4Q1 Q2Q3 Q4
bit 7
bit 0
bit 1
bit 7
Word 2
TXEN bit ^{’1’}
’1’
Note: Sync Master mode; SPBRG = ’0’. Continuous transmission of two 8-bit words.
FIGURE 11-7:
SYNCHRONOUS TRANSMISSION (THROUGH TXEN)
RC7/RX/DT pin
bit0
bit1
bit2
bit6
bit7
RC6/TX/CK pin
Write to
TXREG reg
TXIF bit
TRMT bit
TXEN bit
 2000 Microchip Technology Inc.
DS30605C-page 73