PM0214 datasheet(39/245 Pages) STMICROELECTRONICS

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PM0214

The Cortex-M4 processor

244

2.3.4

Vector table

The vector table contains the reset value of the stack pointer, and the start addresses, also

called exception vectors, for all exception handlers. Figure 11 on page 39 shows the order

of the exception vectors in the vector table. The least-significant bit of each vector must be

1, indicating that the exception handler is Thumb code.

Figure 11. Vector table

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, see Vector table offset register (VTOR) on

page 212.

Initial SP value

Reset

Hard fault

NMI

Memory management fault

Usage fault

Bus fault

0x0000

0x0004

0x0008

0x000C

0x0010

0x0014

0x0018

Reserved

SVCall

PendSV

Reserved for Debug

Systick

IRQ0

Reserved

0x002C

0x0038

0x003C

0x0040

Offset

Exception number

Vector

IRQ1

IRQ2

0x0044

IRQ239

0x0048

0x004C

255

0x03FC

IRQ number

-14

-13

-12

-11

-10

-5

-2

-1

239

MS30018V1

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