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CHAPTER 10 TIME-BASE TIMER
10.7
Sample Program for the Time-base Timer Program
This section contains a sample program for the time-base timer.
■
Sample Program for the Time-base Timer
●
Processing
An interval interrupt of 2
12
/ HCLK (HCLK: oscillation clock) is repeatedly generated. The interval
becomes approx. 1.0 ms (during 4 MHz operation).
●
Coding example
ICR12 EQU 0000BCH ;Time-base timer interrupt control register
TBTC EQU 0000A9H ;Time-base timer control register
TBOF EQU TBTC:3 ;Interrupt request flag bit
;-------Main program------------------------------------------------------------------------------------------------
CODE CSEG
START:
; : ;Assumes that stack pointer (SP) has already
been initialized
AND CCR,#0BFH ;Disables interrupts
MOV I:ICR12 #00H ;Interrupt level 0 (highest)
MOV I:TBTC,#10010000B ;Fixes upper 3 bits
;Enables interrupts and clears TBOF
;Clears counter
;Selects interval 2
12
/HCLK
MOV ILM,#07H ;Sets PS ILM to level 7
OR CCR,#40H ;Enables interrupts
LOOP: MOV A,#00H ;Endless loop
MOV A,#01H
BRA LOOP
;-------Interrupt program---------------------------------------------------------------------------------------------
WARI:
CLRB I:TBOF ;Clears interrupt request flag
; :
; User handling
; :
RETI ;Returns from interrupt
CODE ENDS
Summary of Contents for MB90460 Series
Page 1: ...The following document contains information on Cypress products ...
Page 3: ......
Page 5: ......
Page 9: ...iv ...
Page 41: ...22 CHAPTER 1 OVERVIEW ...
Page 45: ...26 CHAPTER 2 NOTES ON HANDLING DEVICES ...
Page 83: ...64 CHAPTER 3 CPU ...
Page 95: ...76 CHAPTER 4 RESET ...
Page 107: ...88 CHAPTER 5 CLOCK ...
Page 131: ...112 CHAPTER 6 LOW POWER CONSUMPTION MODE ...
Page 175: ...156 CHAPTER 7 INTERRUPT ...
Page 181: ...162 CHAPTER 8 MODE SETTING ...
Page 223: ...204 CHAPTER 9 I O PORT ...
Page 237: ...218 CHAPTER 10 TIME BASE TIMER ...
Page 247: ...228 CHAPTER 11 WATCHDOG TIMER ...
Page 275: ...256 CHAPTER 12 16 BIT RELOAD TIMER ...
Page 373: ...354 CHAPTER 14 MULTI FUNCTIONAL TIMER ...
Page 485: ...466 CHAPTER 16 PWC Timer ...
Page 531: ...512 CHAPTER 17 UART ...
Page 559: ...540 CHAPTER 19 DELAYED INTERRUPT GENERATOR MODULE ...
Page 589: ...570 CHAPTER 20 8 10 BIT A D CONVERTER ...
Page 601: ...582 CHAPTER 21 ROM CORRECTION FUNCTION ...
Page 633: ...614 CHAPTER 23 512K 1024K BIT FLASH MEMORY ...
Page 645: ...626 CHAPTER 24 EXAMPLE OF F2 MC 16LX MB90F462 F462A F463A CONNECTION FOR SERIAL WRITING ...
Page 715: ...696 APPENDIX ...
Page 716: ...697 INDEX INDEX The index follows on the next page This is listed in alphabetic order ...
Page 739: ......