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参数资料
| 型号： | SN8P1603S |
| 厂商： | SONIX Technology Co., Ltd. |
| 英文描述： | 8-Bit Micro-Controller |
| 中文描述： | 8位微控制器 |
| 文件页数： | 70/94页 |
| 文件大小： | 540K |
| 代理商： | SN8P1603S |
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SN8P1600
8-bit micro-controller
SONiX TECHNOLOGY CO., LTD
Page 70
Revision 1.94
MULTI-INTERRUPT OPERATION
In almost conditions, the software designer uses more than one interrupt requests. Processing multi-interrupt request
needs to set the priority of these interrupt requests. The IRQ flags of interrupts are controlled by the interrupt event. But
the IRQ flag “1” doesn’t mean the system to execute the interrupt vector. The IRQ flags can be set “1” by the events
without interrupt enable. Just only any the event occurs and the IRQ will be logic “1”. The IRQ and its trigger event
relationship is as the below table.
Interrupt Name
P00IRQ
P0.0 trigger. OTP is falling edge.
TC0IRQ
TC0C overflow. (SN8P1602/1603)
TC1IRQ
TC1C overflow. (SN8P1604)
There are two works need to do for multi-interrupt conditions. One is to make a good priority for these interrupt
requests. Two is using IEN and IRQ flags to decide executing interrupt service routine or not. Users have to check
interrupt control bit and interrupt request flag in interrupt vector. There is a simple routine as following.
Example: How do users check the interrupt request in multi-interrupt situation
ORG
8
; Interrupt vector
B0XCH
A, ACCBUF
; Store ACC value.
B0MOV
A, PFLAG
; Store PFLAG value
B0MOV
PFLAGBUF,A
INTP00CHK:
; Check INT0 interrupt request
B0BTS1
FP00IEN
; Check P00IEN
JMP
INTTC0CHK
; Jump check to next interrupt
B0BTS0
FP00IRQ
; Check P00IRQ
JMP
INTP00
; Jump to INT0 interrupt service routine
INTTC0CHK:
; Check TC0 interrupt request
B0BTS1
FTC0IEN
; Check TC0IEN
JMP
INT_EXIT
; Jump to exit of IRQ
B0BTS0
FTC0IRQ
; Check TC0IRQ
JMP
INTTC0
; Jump to TC0 interrupt service routine
INT_EXIT:
B0MOV
A, PFLAGBUF
; Restore PFLAG value
B0MOV
PFLAG,A
B0XCH
A, ACCBUF
; Restore ACC value.
RETI
; Exit interrupt vector
Trigger Event Description
相关PDF资料 |
PDF描述 |
|---|---|
| SN8P1603X | 8-Bit Micro-Controller |
| SN8P1604 | 8-Bit Micro-Controller |
| SN8P1604AK | 8-Bit Micro-Controller |
| SN8P1604AP | 8-Bit Micro-Controller |
| SN8P1604AQ | 8-Bit Micro-Controller |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SN8P1603X | 制造商:SONIX 制造商全称:SONIX 功能描述:8-Bit Micro-Controller |
| SN8P1604 | 制造商:SONIX 制造商全称:SONIX 功能描述:8-Bit Micro-Controller |
| SN8P1604AK | 制造商:SONIX 制造商全称:SONIX 功能描述:8-Bit Micro-Controller |
| SN8P1604AP | 制造商:SONIX 制造商全称:SONIX 功能描述:8-Bit Micro-Controller |
| SN8P1604AQ | 制造商:SONIX 制造商全称:SONIX 功能描述:8-Bit Micro-Controller |
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