Atmel ARM-Based Evaluation Kit for SAM4S16C, 32-Bit ARM® Cortex® Microcontroller ATSAM4S-WPIR-RD ATSAM4S-WPIR-RD Data Sheet
Product codes
ATSAM4S-WPIR-RD
SAM4S Series [DATASHEET]
Atmel-11100G-ATARM-SAM4S-Datasheet_27-May-14
236
12.10.1.2SysTick Reload Value Registers
Name:
SYST_RVR
Access:
Read
/Write
Reset:
0x00
0000000
The SYST_RVR specifies the start value to load into the SYST_CVR.
• RELOAD: SYST_CVR Load Value
Value to load into the SYST_CVR when the counter is enabled and when it reaches 0.
The RELOAD value can be any value in the range 0x00000001–0x00FFFFFF. A start value of 0 is possible, but has no
The RELOAD value can be any value in the range 0x00000001–0x00FFFFFF. A start value of 0 is possible, but has no
effect because the SysTick exception request and COUNTFLAG are activated when counting from 1 to 0.
The RELOAD value is calculated according to its use: For example, to generate a multi-shot timer with a period of N pro-
The RELOAD value is calculated according to its use: For example, to generate a multi-shot timer with a period of N pro-
cessor clock cycles, use a RELOAD value of N-1. If the SysTick interrupt is required every 100 clock pulses, set RELOAD
to 99.
31
30
29
28
27
26
25
24
–
23
22
21
20
19
18
17
16
RELOAD
15
14
13
12
11
10
9
8
RELOAD
7
6
5
4
3
2
1
0
RELOAD