Ing.Ing. ZbynZbyněěk Burek Burešš, Ph.D., Ph.D.
zbynekzbynek..buresbures@@unobunob..czcz
Mgr. VojtMgr. Vojtěěchch KrmKrmííččekek
vojtec@vojtec@icsics..munimuni..czcz
PIC12F629 / 675
Timers
PIC12FPIC12F629 / 675629 / 675
TimersTimers
PackagePackage
Block diagrams of pinsBlock diagrams of pins
Timer0Timer0 -- featuresfeatures
8 bit timer / counter,8 bit timer / counter,
readable and writable,readable and writable,
programmable 8 bitprogrammable 8 bit prescalerprescaler,,
internal or external clock,internal or external clock,
interrupt on overflow frominterrupt on overflow from
0xff0xff --> 0x00.> 0x00.
Timer0Timer0 -- block diagramblock diagram
RegistersRegisters ­­ Timer0Timer0
Registers Timer0 (cont.)Registers Timer0 (cont.)
Registers summaryRegisters summary
Timer1Timer1 -- featuresfeatures
16 bit timer / counter,16 bit timer / counter,
readable and writable,readable and writable,
programmable 2 bitprogrammable 2 bit prescalerprescaler,,
internal or external clock,internal or external clock,
synchronous and asynchronous operations,synchronous and asynchronous operations,
optional external enable bitoptional external enable bit
wake up after overflow,wake up after overflow,
interrupt on overflow frominterrupt on overflow from
0xffff0xffff --> 0x0000> 0x0000
Timer1Timer1 -- block diagramblock diagram
Registers Timer1Registers Timer1
Registers Timer1 (cont.)Registers Timer1 (cont.)