PIC12F629/675
REGISTER 5-1:
T1CON: TIMER1 CONTROL REGISTER (ADDRESS: 10h)
U-0
—
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
TMR1GE
T1CKPS1
T1CKPS0
T1OSCEN
T1SYNC
TMR1CS
TMR1ON
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared x = Bit is unknown
-n = Value at POR
bit 7
bit 6
Unimplemented: Read as ‘0’
TMR1GE: Timer1 Gate Enable bit
If TMR1ON = 0:
This bit is ignored
If TMR1ON = 1:
1= Timer1 is on if T1G pin is low
0= Timer1 is on
bit 5-4
bit 3
T1CKPS1:T1CKPS0: 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
T1OSCEN: LP Oscillator Enable Control bit
If INTOSC without CLKOUT oscillator is active:
1= LP oscillator is enabled for Timer1 clock
0= LP oscillator is off
Else:
This bit is ignored
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.
bit 1
bit 0
TMR1CS: Timer1 Clock Source Select bit
1= External clock from T1OSO/T1CKI pin (on the rising edge)
0= Internal clock (FOSC/4)
TMR1ON: Timer1 On bit
1= Enables Timer1
0= Stops Timer1
DS41190G-page 34
2010 Microchip Technology Inc.
MICROCHIP [ MICROCHIP ]
