SMBP2501BPB datasheet(79/107 Pages) SONIX

79 / 107 page

SN8P2501B

8-Bit Micro-Controller

SONiX TECHNOLOGY CO., LTD

Page 79

Version 2.1

8.2.4 T0 TIMER OPERATION SEQUENCE

T0 timer operation sequence of setup T0 timer is as following.



Stop T0 timer counting, disable T0 interrupt function and clear T0 interrupt request flag.

B0BCLR

FT0ENB

; T0 timer.

B0BCLR

FT0IEN

; T0 interrupt function is disabled.

B0BCLR

FT0IRQ

; T0 interrupt request flag is cleared.



Set T0 timer rate.

MOV

A, #0xxx0000b

;The T0 rate control bits exist in bit4~bit6 of T0M. The

; value is from x000xxxxb~x111xxxxb.

B0MOV

T0M,A

; T0 timer is disabled.



Set T0 clock source from Fcpu or RTC.

B0BCLR

FT0TB

; Select T0 Fcpu clock source.

B0BSET

FT0TB

; Select T0 RTC clock source.



Set T0 interrupt interval time.

MOV

A,#7FH

B0MOV

T0C,A

; Set T0C value.



Set T0 timer function mode.

B0BSET

FT0IEN

; Enable T0 interrupt function.



Enable T0 timer.

B0BSET

FT0ENB

; Enable T0 timer.

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