M263 datasheet(287/398 Pages) NUVOTON

287 / 398 page

M261/M262/M263

Mar 25, 2020

Page 287 of 398

Rev 1.02

The processor automatically stacks its state on exception entry and unstacks this state on exception

exit, with no instruction overhead. This provides low latency exception handling.

6.2.10.1

Exception Model and System Interrupt Map

Table 6.2-8 lists the exception model supported by M261/M262/M263 Series. Software can set 16

levels of priority on some of these exceptions as well as on all interrupts. The highest user-

configurable priority is denoted as “0x00” and the lowest priority is denoted as “0xC0” (The 6-LSB

always 0). The default priority of all the user-

configurable interrupts is “0x00”. Note that priority “0” is

treated as the fourth priority on the system, after three system exceptions “Reset”, “NMI” and “Hard

Fault”.

When any interrupts is accepted, the processor will automatically fetch the starting address of the

interrupt service routine (ISR) from a vector table in memory. On system reset, the vector table is fixed

at address 0x00000000. Privileged software can write to the VTOR to relocate the vector table start

address to a different memory location, in the range 0x00000080 to 0x3FFFFF80,

The vector table contains the initialization value for the stack pointer on reset, and the entry point

addresses for all exception handlers. The vector number on previous page defines the order of entries

in the vector table associated with exception handler entry as illustrated in previous section.

Table 6.2-8 Exception Model

Vector

Number

Interrupt Number

(Bit

Interrupt

Registers)

Interrupt Name

Interrupt Description

0 ~ 15

System exceptions

BODOUT

Brown-out low voltage detected interrupt

IRC_INT

IRC TRIM interrupt

PWRWU_INT

Clock controller interrupt for chip wake-up from power-down state

SRAM_PERR

SRAM parity check error interrupt

Exception Type

Vector Number

Vector Address

Priority

Reset

0x00000004

-4

NMI

0x00000008

-2

Hard Fault

0x0000000C

-1

Reserved

4 ~ 10

Reserved

SVCall

0x0000002C

Configurable

Reserved

12 ~ 13

Reserved

PendSV

0x00000038

Configurable

SysTick

0x0000003C

Configurable

Interrupt (IRQ0 ~ IRQ)

16 ~ 111

0x00000000 +

(Vector Number)*4

Configurable

M263 Datasheet(PDF) 287 Page - Nuvoton Technology Corporation

M263 Datasheet(HTML) 287 Page - Nuvoton Technology Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL