2003 Microchip Technology Inc.
Preliminary
DS40300C-page 63
PIC16F62X
11.2.2
TIMER1 MODE SELECTION
Timer1 must be running in Timer mode or Synchro-
nized Counter mode if the CCP module is using the
compare feature. In Asynchronous Counter mode, the
compare operation may not work.
11.2.3
SOFTWARE INTERRUPT MODE
When generate software interrupt is chosen, the CCP1
pin is not affected. Only a CCP interrupt is generated (if
enabled).
11.2.4
SPECIAL EVENT TRIGGER
In this mode, an internal hardware trigger is generated
which may be used to initiate an action.
The special event trigger output of CCP1 resets the
TMR1 register pair. This allows the CCPR1 register to
effectively be a 16-bit programmable period register for
Timer1.
TABLE 11-3:
REGISTERS ASSOCIATED WITH CAPTURE, COMPARE, AND TIMER1
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
0Bh/8Bh/
10Bh/
18Bh
INTCON
GIE
PEIE
T0IE
INTE
RBIE
T0IF
INTF
RBIF
0000 000x 0000 000u
0Ch
PIR1
EEIF
CMIF
RCIF
TXIF
CCP1IF
TMR2IF
TMR1IF
0000 -000 0000 -000
8Ch
PIE1
EEIE
CMIF
RCIE
TXIE
CCP1IE
TMR2IE
TMR1IE 0000 -000 0000 -000
87h
TRISB
PORTB Data Direction Register
1111 1111 1111 1111
0Eh
TMR1L
Holding register for the Least Significant Byte of the 16-bit TMR1 register
xxxx xxxx uuuu uuuu
0Fh
TMR1H
Holding register for the Most Significant Byte of the 16-bit TMR1register
xxxx xxxx uuuu uuuu
10h
T1CON
T1CKPS1 T1CKPS0 T1OSCEN T1SYNC TMR1CS TMR1ON --00 0000 --uu uuuu
15h
CCPR1L
Capture/Compare/PWM register1 (LSB)
xxxx xxxx uuuu uuuu
16h
CCPR1H
Capture/Compare/PWM register1 (MSB)
xxxx xxxx uuuu uuuu
17h
CCP1CON
CCP1X
CCP1Y
CCP1M3
CCP1M2 CCP1M1 CCP1M0 --00 0000 --00 0000
Legend:
x
= unknown, u = unchanged, - = unimplemented read as '0'. Shaded cells are not used by Capture and Timer1.
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