PIC单片机学习7 TMR1

TMR1是16位宽度的TMR1由2个8位的可读写的寄存器TMR1H和TMR1L组成。

TMR1有专门的启停控制位TMR1ON，通过软件可以任意启动或暂停TMR1计数功能。

T1CON:TIMER1 CONTROL REGISTER

bit7-6 unimplemented :Read as ‘0’

bit5-4 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

bit3   T1OSCEN:Timer1 Oscillator Enable Control bit

         1 = Oscillator is enable

         0 = Oscillator is shut-off

bit2 T1SYNC:Timer1 External Clock Input Synchronization Control bit

        when TMR1CS = 1

        1= Do not synchronize external clock input

        0= Synchronize external clock input

        when TMR1CS = 0

        This bit is ignored .Timer1 uses the internal clock when TMR1CS = 0.

bit1 TMR1CS:Timer1 Clock Source Select bit

       1 = External clock from pin RC0/T1OSO/T1CKI

       0 = Internal clock

bit0 TMR1ON:Timer1 on bit

     1 = enables timer1

     0 = stops timer1