PIC16F688
REGISTER 6-1:
T1CON – TIMER1 CONTROL REGISTER (ADDRESS: 10h)
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
T1GINV TMR1GE T1CKPS1 T1CKPS0 T1OSCEN T1SYNC TMR1CS TMR1ON
R/W-0
R/W-0
bit 7
bit 0
bit 7
bit 6
T1GINV: Timer1 Gate Invert bit(1)
1= Timer1 gate is inverted
0= Timer1 gate is not inverted
TMR1GE: Timer1 Gate Enable bit(2)
If TMR1ON = 0:
This bit is ignored.
If TMR1ON = 1:
1= Timer1 is on if Timer1 gate is not active
0= Timer1 is on
bit 5-4
bit 3
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
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 T1CKI pin (on the rising edge)
0= Internal clock (FOSC/4)
TMR1ON: Timer1 On bit
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 (CMCON1<1>), as a Timer1 gate source.
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
2004 Microchip Technology Inc.
Preliminary
DS41203B-page 51
MICROCHIP [ MICROCHIP ]
