MaximIntegrated 12-12
MAX31782 User’s Guide
Revision 0; 8/11
12.3TimerBCodeExamples
12.3.1Auto-ReloadMode
Creating a 10ms interrupt (10ms at 4MHz = 40,000 clock cycles):
TB0R = 40000;
//set the Reload Register
TB0V = 0x0000;
//clear the Value Register
TB0CN_bit.CPnRLB = 0;
//clear for auto reload
TB0CN_bit.ETB = 1;
//enable the interrupt
TB0CN_bit.TRB = 1;
//enable the Timer B operation
12.3.2ClockOutputMode
Creating a 100kHz clock on the TBA pin:
TB0CN_bit.CPnRLB = 0;
//clear for reload
TB0CN_bit.TBPS = 1;
//prescaler: divide sysclk/4 for 1MHz Timer B Clock
TB0R = 4;
//set for 100 kHz output frequency
TB0CN_bit.TBOE = 1;
//enable output on TBA pin
TB0CN_bit.TRB = 1;
//enable timer operation
12.3.3PWMOutputMode
Creating a 40% duty cycle 100kHz signal:
TB0CN_bit.TBPS = 0;
//Timer B input clk = sysclk
TB0R = 39;
//PWM period = 40 sysclks
TB0C = 16;
//duty cycle = 16/40
TB0CN_bit.TBCR = 1;
//set to reset mode
TB0CN_bit.TBCS = 0;
//set to reset mode
TB0CN_bit.TRB = 1;
//enable Timer B
