Atmel SAM4S-XPLD Atmel ATSAM4S-XPLD ATSAM4S-XPLD Hoja De Datos

 252

SAM4S [DATASHEET]

11100E–ATARM–24-Jul-13

RSTC_MR

0x400E1408

Read-write

0 = The detection of a low level on the pin NRST does not generate a User Reset.

1 = The detection of a low level on the pin NRST triggers a User Reset.

0 = USRTS bit in RSTC_SR at 1 has no effect on rstc_irq.

1 = USRTS bit in RSTC_SR at 1 asserts rstc_irq if URSTEN = 0.

This field defines the external reset length. The external reset is asserted during a time of 2

(ERSTL+1)

 Slow Clock cycles. This 

allows assertion duration to be programmed between 60 

μs and 2 seconds.

Should be written at value 0xA5. Writing any other value in this field aborts the write operation.

31

30

29

28

27

26

25

24

KEY

23

22

21

20

19

18

17

16

–

–

–

–

–

–

–

–

15

14

13

12

11

10

9

8

–

–

–

–

ERSTL

7

6

5

4

3

2

1

0

–

–

URSTIEN

–

–

–

URSTEN