SN32F100 Series
32-Bit Cortex-M0 Micro-Controller
SONiX TECHNOLOGY CO., LTD
Page 31
Version 1.9
2.3 NESTED VECTORED INTERRUPT CONTROLLER (NVIC)
All interrupts including the core exceptions are managed by the NVIC. NVIC has the following Features:
The NVIC supports 32 vectored interrupts.
4 programmable interrupt priority levels with hardware priority level masking.
Low-latency exception and interrupt handling.
Efficient processing of late arriving interrupts.
Implementation of System Control Registers
Software interrupt generation.
2.3.1 INTERRUPT AND EXCEPTION VECTORS
2.3.2 NVIC REGISTERS
Execution No.
Priority
Function
Description
Address Offset
0
-
-
Reserved
0x0000 0000
1
-3
Reset
Reset
0x0000 0004
2
-2
NMI_Handler
Non maskable interrupt.
0x0000 0008
3
-1
HardFault_Handler
All class of fault
0x0000 000C
4~10
Reserved
Reserved
Reserved
-
11
Settable
SVCCall
0x0000 002C
12~13
Reserved
Reserved
Reserved
-
14
Settable
PendSV
0x0000 0038
15
Settable
SysTick
0x0000 003C
16
Settable
IRQ0/P0IRQ
GPIO interrupt status of port 0
0x0000 0040
17
Settable
IRQ1/P1IRQ
GPIO interrupt status of port 1
0x0000 0044
18
Settable
IRQ2/P2IRQ
GPIO interrupt status of port 2
0x0000 0048
19
Settable
IRQ3/P3IRQ
GPIO interrupt status of port 3
0x0000 004C
20~32
Reserved
Reserved
Reserved
-
33
Settable
IRQ17/CMPIRQ
CMP
0x0000 0084
34
Settable
IRQ18/CT16B0IRQ
CT16B0
0x0000 0088
35
Settable
IRQ19/CT16B1IRQ
CT16B1
0x0000 008C
36
Settable
IRQ20/CT32B0IRQ
CT32B0
0x0000 0090
37
Settable
IRQ21/CT32B1IRQ
CT32B1
0x0000 0094
38
Settable
IRQ22/I2SIRQ
I2S
0x0000 0098
39
Settable
IRQ23/SSP0IRQ
SSP0
0x0000 009C
40
Settable
IRQ24/SSP1IRQ
SSP1
0x0000 00A0
41
Settable
IRQ25/UART0IRQ
UART0
0x0000 00A4
42
Settable
IRQ26/UART1IRQ
UART1
0x0000 00A8
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