Microchip Technology MCP1631RD-MCC2 Data Sheet
PIC16F882/883/884/886/887
DS41291G-page 84
2006-2012 Microchip Technology Inc.
6.12
Timer1 Control Register
The Timer1 Control register (T1CON), shown in
, is used to control Timer1 and select the
various features of the Timer1 module.
REGISTER DEFINITIONS: TIMER1 CONTROL
REGISTER 6-1:
T1CON: TIMER1 CONTROL REGISTER
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
T1GINV
(1)
TMR1GE
(2)
T1CKPS1
T1CKPS0
T1OSCEN
T1SYNC
TMR1CS
TMR1ON
bit 7
bit 0
Legend:
R = Readable bit
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 7
T1GINV: Timer1 Gate Invert bit
(1)
1 = Timer1 gate is active-high (Timer1 counts when gate is high)
0 = Timer1 gate is active-low (Timer1 counts when gate is low)
0 = Timer1 gate is active-low (Timer1 counts when gate is low)
bit 6
TMR1GE: Timer1 Gate Enable bit
(2)
If TMR1ON = 0:
This bit is ignored
If TMR1ON = 1:
1 = Timer1 counting is controlled by the Timer1 Gate function
0 = Timer1 is always counting
This bit is ignored
If TMR1ON = 1:
1 = Timer1 counting is controlled by the Timer1 Gate function
0 = Timer1 is always counting
bit 5-4
T1CKPS<1:0>: Timer1 Input Clock Prescale Select bits
11 = 1:8 Prescale Value
10 = 1:4 Prescale Value
01 = 1:2 Prescale Value
00 = 1:1 Prescale Value
11 = 1:8 Prescale Value
10 = 1:4 Prescale Value
01 = 1:2 Prescale Value
00 = 1:1 Prescale Value
bit 3
T1OSCEN: LP Oscillator Enable Control bit
1 = LP oscillator is enabled for Timer1 clock
0 = LP oscillator is off
1 = LP oscillator is enabled for Timer1 clock
0 = LP oscillator is off
bit 2
T1SYNC: Timer1 External Clock Input Synchronization Control bit
TMR1CS = 1:
1 = Do not synchronize external clock input
0 = Synchronize external clock input
TMR1CS = 0:
This bit is ignored. Timer1 uses the internal clock
TMR1CS = 1:
1 = Do not synchronize external clock input
0 = Synchronize external clock input
TMR1CS = 0:
This bit is ignored. Timer1 uses the internal clock
bit 1
TMR1CS: Timer1 Clock Source Select bit
1 = External clock from T1CKI pin (on the rising edge)
0 = Internal clock (F
1 = External clock from T1CKI pin (on the rising edge)
0 = Internal clock (F
OSC
/4)
bit 0
TMR1ON: Timer1 On bit
1 = Enables Timer1
0 = Stops Timer1
1 = Enables Timer1
0 = Stops Timer1
Note 1:
T1GINV bit inverts the Timer1 gate logic, regardless of source.
2:
TMR1GE bit must be set to use either T1G pin or C2OUT, as selected by the T1GSS bit of the CM2CON1
register, as a Timer1 gate source.
register, as a Timer1 gate source.