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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  
6.12 WAKEUP INTERRUPT OPERATION  
When the I/O port 1 or I/O port 0 wakeup the MCU from the sleep mode, the WAKEIRQ will be set to “1” no matter the  
WAKEIEN is enable or disable. If the WAKEIEN and the trigger event WAKEIRQ is set to be “1”. As the result, the  
system will execute the interrupt vector. If the WAKEIEN = 0, the trigger event WAKEIRQ is still set to be “1”.  
Moreover, the system won’t execute interrupt vector. Users need to be cautious with the operation under multi-interrupt  
situation.  
¾
Example: WAKE interrupt request setup.  
B0BCLR  
B0BCLR  
B0BSET  
FWAKEIEN  
FWAKEIRQ  
FWAKEIEN  
; Disable WAKE interrupt service  
; Clear WAKE interrupt request flag  
; Enable WAKE interrupt service  
; Pin WAKEUP initialize.  
; Pin WAKEUP operation.  
B0BSET  
FGIE  
; Enable GIE  
Example: WAKE interrupt service routine.  
ORG  
JMP  
8
; Interrupt vector  
INT_SERVICE  
INT_SERVICE:  
PUSH  
; Push routine to save ACC and PFLAG to buffers.  
B0BTS1  
JMP  
FWAKEIRQ  
EXIT_INT  
; Check WAKEIRQ  
; WAKEIRQ = 0, exit interrupt vector  
B0BCLR  
FWAKEIRQ  
; Reset WAKEIRQ  
; WAKE interrupt service routine  
EXIT_INT:  
POP  
RETI  
; Pop routine to load ACC and PFLAG from buffers.  
; Exit interrupt vector  
SONiX TECHNOLOGY CO., LTD  
Page 67  
Version 1.1