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参数资料
| 型号： | ST7SCR |
| 厂商： | 意法半导体 |
| 英文描述： | 8-BIT LOW-POWER, FULL-SPEED USB MCU WITH 16K FLASH, 768 RAM, SMARTCARD I/F, TIMER |
| 中文描述： | 8位低功耗，全速USB微控制器与16K的闪存，768内存，智能卡的I /楼，计时器 |
| 文件页数： | 27/102页 |
| 文件大小： | 1413K |
| 代理商： | ST7SCR |
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ST7SCR
27/102
INTERRUPTS
(Cont’d)
Table 6. Dedicated Interrupt Instruction Set
Note:
During the execution of an interrupt routine, the HALT, POPCC, RIM, SIM and WFI instructions
change the current software priority up to the next IRET instruction or one of the previously mentioned
instructions.
In order not to lose the current software priority level, the RIM, SIM, HALT, WFI and POP CC instructions
should never be used in an interrupt routine.
Table 7. Interrupt Mapping
Note 1:
This interrupt can be used to exit from USB suspend mode.
Instruction
HALT
IRET
JRM
JRNM
POP CC
RIM
SIM
TRAP
WFI
New Description
Function/Example
I1
1
I1
H
I0
0
I0
N
Z
C
Entering Halt mode
Interrupt routine return
Jump if I1:0=11
Jump if I1:0<>11
Pop CC from the Stack
Enable interrupt (level 0 set)
Disable interrupt (level 3 set)
Software trap
Wait for interrupt
Pop CC, A, X, PC
I1:0=11
I1:0<>11
Mem => CC
Load 10 in I1:0 of CC
Load 11 in I1:0 of CC
Software NMI
H
N
Z
C
I1
1
1
1
1
H
I0
0
1
1
0
N
Z
C
N°
Source
Block
Description
Register
Label
Priority
Order
Exit
from
HALT
yes
Address
Vector
RESET
TRAP
ICP
UART
USB
WAKUP1
WAKUP2
TIM
CARDDET
1)
ESUSP
Reset
Software Interrupt
FLASH Start programming NMI interrupt
ISO7816-3 UART Interrupt
USB Communication Interrupt
External Interrupt Port C
External Interrupt Port A
TBU Timer Interrupt
Smartcard Insertion/Removal Interrupt
1)
End suspend Interrupt
N/A
Highest
Priority
Lowest
Priority
FFFEh-FFFFh
FFFCh-FFFDh
FFFAh-FFFBh
FFF8h-FFF9h
FFF6h-FFF7h
FFF4h-FFF5h
FFF2h-FFF3h
FFF0h-FFF1h
FFEEh-FFEFh
FFECh-FFEDh
no
0
1
2
3
4
5
6
7
UIC
USBISTR
yes
yes
no
TBUSR
USCUR
USBISTR
yes
8
Not used
no
FFEAh-FFEBh
1
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