CC2530 8051 TIMER1 (16-Bit Timer) - Free-Running,Modulo,Up/Down Mode

CC2530 8051 TIMER1 (16-Bit Timer) 

Free-Running Mode
Free-Running Mode to control the R-LED ON / OFF

Timer1 starts counting from 0x0000 to 0xFFFF

An interrupt is generated when Timer1 count to 0xFFFF

An interrupt is generated the R-LED status changes and Timer1 recount

An interrupt is generated every 32.76ms 

65535(0xFFFF) / (16Mhz / 8) = 32.76 ms

Modulo Mode

Modulo Mode to control the R-LED ON / OFF

Timer1 starts counting from 0x0000 to T1CC0 

An interrupt is generated when Timer1 count to T1CC0

An interrupt is generated the R-LED status changes and Timer1 recount

T1CC0 = 0x7FFF 

An interrupt is generated every 16.38 ms 

32767(0x7FFF) / (16Mhz / 8) = 16.38 ms

Up/Down Mode

Up/Down Mode to control the R-LED ON / OFF

Timer1 starts counting from 0x0000 to T1CC0

When Timer1 count to T1CC0,TIMER1 will reverse counting from T1CC0 to 0x0000 

An interrupt is generated when reverse count to 0x0000

An interrupt is generated the R-LED status changes and Timer1 recount

T1CC0 = 0xFFFF

An interrupt is generated every 65.52ms 

65535(0xFFFF) x 2 / (16Mhz / 8) = 65.52ms