NUTINY-SDK-M0516 Nuvoton Technology Corporation of America, NUTINY-SDK-M0516 Datasheet - Page 123

• Manufacturer Part Number: NUTINY-SDK-M0516
• Description: BOARD EVAL NUMICRO M051 SERIES
• Manufacturer: Nuvoton Technology Corporation of America
• Series: NuMicro M051™r
• Type: MCUr

Specifications of NUTINY-SDK-M0516

• Contents: Board, Cable
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: M051™ Series, M052/M054/M058/M0516

Clock Source Select Control Register 0 （CLKSEL0）
NuMicro M051
Register
CLKSEL0
Bits
[31:6]
[5:3]
[2:0]
31
23
15
7
Reserved
[1]
Offset
CLK_BA + 10 R/W
Descriptions
Reserved
STCLK_S
HCLK_S
30
22
14
6
R/W
Reserved
MCU Cortex_M0 SysTick clock source select.
This bit is the protected bit. It means programming this needs to write “59h”, “16h”, “88h” to
address 0x5000_0100 to disable register protection. Reference the register REGWRPROT
at address GCR_BA+0x100.
000 = Clock source from external crystal clock (4 ~ 24MHz)
001 = Reserved
010 = Clock source from external crystal clock/2 (4 ~ 24MHz)
011 = Clock source from HCLK/2
1xx = Clock source from internal 22.1184 MHz oscillator clock/2
HCLK clock source select.
Note:
1.
™
29
21
13
5
Series Technical Reference Manual
Before clock switching, the related clock sources (both pre-select and new-select)
must be turn on
Description
Clock Source Select Control Register 0
STCLK_S
28
20
12
4
- 123 -
Reserved
Reserved
Reserved
27
19
11
3
Publication Release Date: Sept 14, 2010
26
18
10
2
HCLK_S
25
17
9
1
0xFFFF_FFFX
Reset Value
Revision V1.2
24
16
8
0
[2]