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SN8F2250B 参数 Datasheet PDF下载

SN8F2250B图片预览
型号: SN8F2250B
PDF下载: 下载PDF文件 查看货源
内容描述: 8位微控制器 [8-Bit Micro-Controller]
分类和应用: 微控制器
文件页数/大小: 133 页 / 1554 K
品牌: SONIX [ SONIX TECHNOLOGY COMPANY ]
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SN8F2250B Series  
USB 2.0 Full-Speed 8-Bit Micro-Controller  
6.10 TC1 INTERRUPT OPERATION  
When the TC1C counter overflows, the TC1IRQ will be set to “1” no matter the TC1IEN is enable or disable. If the  
TC1IEN and the trigger event TC1IRQ is set to be “1”. As the result, the system will execute the interrupt vector. If the  
TC1IEN = 0, the trigger event TC1IRQ is still set to be “1”. Moreover, the system won’t execute interrupt vector even  
when the TC1IEN is set to be “1”. Users need to be cautious with the operation under multi-interrupt situation.  
¾
Example: TC1 interrupt request setup.  
B0BCLR  
B0BCLR  
MOV  
B0MOV  
MOV  
FTC1IEN  
FTC1ENB  
A, #20H  
TC1M, A  
A, #74H  
TC1C, A  
; Disable TC1 interrupt service  
; Disable TC1 timer  
;
; Set TC1 clock = Fcpu / 64  
; Set TC1C initial value = 74H  
; Set TC1 interval = 10 ms  
B0MOV  
B0BSET  
B0BCLR  
B0BSET  
FTC1IEN  
FTC1IRQ  
FTC1ENB  
; Enable TC1 interrupt service  
; Clear TC1 interrupt request flag  
; Enable TC1 timer  
B0BSET  
FGIE  
; Enable GIE  
¾
Example: TC1 interrupt service routine.  
ORG  
JMP  
8
; Interrupt vector  
INT_SERVICE  
INT_SERVICE:  
; Push routine to save ACC and PFLAG to buffers.  
B0BTS1  
JMP  
FTC1IRQ  
EXIT_INT  
; Check TC1IRQ  
; TC1IRQ = 0, exit interrupt vector  
B0BCLR  
MOV  
B0MOV  
FTC1IRQ  
A, #74H  
TC1C, A  
; Reset TC1IRQ  
; Reset TC1C.  
; TC1 interrupt service routine  
EXIT_INT:  
; Pop routine to load ACC and PFLAG from buffers.  
; Exit interrupt vector  
RETI  
SONiX TECHNOLOGY CO., LTD  
Page 65  
Version 1.1  
 
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