Program Example Of Timebase Timer - Fujitsu F2MCTM-16LX Hardware Manual

11.7

Program Example of Timebase Timer

Programming examples for the timebase timer are shown below.
Program Example of Timebase Timer
Processing specification
12
The 2 /HCLK (HCLK: oscillation clock) interval interrupt is generated repeatedly. In this case, the
interval time is approximately 1.0 ms (at 4-MHz operation).
Coding example
ICR07
TBTC
TBOF
TBIE
;-------Main program---------------------------------------
CODE
START:
LOOP:
;-------Interrupt program------------------------------------
WARI:
CODE
;-------Vector setting----------------------------------------
VECT
EQU 0000B7H
EQU 0000A9H
EQU TBTC:3
EQU TBTC:2
CSEG
AND CCR,#0BFH
MOV I:ICR07 #00H
MOV I:TBTC,#10000000B
SETB I:TBIE
MOV ILM,#07H
OR CCR,#40H
MOV A,#00H
MOV A,#01H
BRA LOOP
CLRB I:TBIE
CLRB I:TBOF
:
User processing
:
SETB I:TBIE
RETI
ENDS
CSEG ABS=0FFH
ORG 0FF98H
CHAPTER 11 TIMEBASE TIMER
;Timebase timer interrupt control register
;Timebase timer control register
;Interrupt request flag bit
;Interrupt enable bit
;Stack pointer(SP), already initialized
;Interrupt disable
;Interrupt level 0(highest)
;Upper 3 bis are fixed
;TBOF clear,
;Counter clear interval time
12
;2 /HCLK selection
;Interrupt enable
;Setting ILM in PS to level 7
;Interrupt enable
;No limit loop
;Clear interrupt enable bit
;Clear interrupt request flag
;Interrupt enable
;Recovery from interrupt processing
;Vector setting to interrupt number
#25(19 )
H
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