Datasheet
PIC24F16KL402 FAMILY
DS30001037C-page 120 2011-2013 Microchip Technology Inc.
REGISTER 14-1: T3CON: TIMER3 CONTROL REGISTER
U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0
— — — — — — — —
bit 15 bit 8
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 U-0 R/W-0
TMR3CS1 TMR3CS0 T3CKPS1 T3CKPS0 T3OSCEN T3SYNC
—TMR3ON
bit 7 bit 0
Legend:
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 15-8 Unimplemented: Read as ‘0’
bit 7-6 TMR3CS<1:0>: Timer3 Clock Source Select bits
11 = Low-Power RC Oscillator (LPRC)
10 = External clock source (selected by T3CON<3>)
01 = Instruction clock (F
OSC/2)
00 = System clock (F
OSC)
(1)
bit 5-4 T3CKPS<1:0>: Timer3 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
bit 3 T3OSCEN: Timer3 Oscillator Enable bit
1 = SOSC (Secondary Oscillator) is used as a clock source
0 = T3CK digital input pin is used as a clock source
bit 2 T3SYNC
: Timer3 External Clock Input Synchronization Control bit
When TMR3CS<1:0> = 1x:
1 = Does not synchronize the external clock input
0 = Synchronizes the external clock input
(2)
When TMR3CS<1:0> = 0x:
This bit is ignored; Timer3 uses the internal clock.
bit 1 Unimplemented: Read as ‘0’
bit 0 TMR3ON: Timer3 On bit
1 = Enables Timer3
0 = Stops Timer3
Note 1: The FOSC clock source should not be selected if the timer will be used with the ECCP capture or compare
features.
2: This option must be selected when the timer will be used with ECCP/CCP.