NuMicro® NUC029LEE/NUC029SEE
32-bit Arm
®
Cortex
®
-M0 Microcontroller
Aug, 2018
Page
115
of
497
Rev 1.00
N
U
MICRO
®
N
UC02
9L
E
E
/N
UC029
S
E
E
T
E
CHN
ICA
L R
E
F
E
R
E
NC
E
M
A
NU
A
L
1
0
PLLCON[19]
22.1184
MHz
4~24
MHz
PLLFOUT
111
011
010
001
4~24 MHz
32.768 kHz
4~24 MHz
HCLK
22.1184 MHz
000
1/2
1/2
1/2
CLKSEL0[5:3]
1
0
SysTick
TMR 0
ADC
UART 0-2
PDMA
I2C 0~1
RTC
WDT
PWM 0-1
PWM 2-3
PWM 4-5
TMR 3
TMR 2
TMR 1
CPU
FMC
32.768
kHz
10 kHz
011
010
001
000
HCLK
32.768 kHz
4~24 MHz
111
011
010
001
PLLFOUT
32.768 kHz
4~24 MHz
10 kHz
22.1184 MHz
000
CLKSEL0[2:0]
SYST_CSR[2]
CPUCLK
1/(1)
PCLK
CPUCLK
HCLK
11
01
00
PLLFOUT
4~24 MHz
HCLK
CLKSEL1[3:2]
External trigger
CLKSEL1[22:20]
CLKSEL1[18:16]
CLKSEL1[14:12]
CLKSEL1[10:8]
011
010
001
000
HCLK
4~24 MHz
22.1184 MHz
32.768 kHz
22.1184 MHz
32.768 kHz
WWDT
10 kHz
1/(ADC_N+1)
11
10
CLKSEL1[1:0]
HCLK
1/2048
1/(1)
22.1184 MHz
4~24 MHz
01
32.768 kHz
11
01
00
PLLFOUT
4~24 MHz
22.1184 MHz
CLKSEL1[25:24]
22.1184 MHz
10
10 kHz
22.1184 MHz
101
111
1
0
SPI0-1
CLK_SEL1[5:4]
HCLK
USB
1/(USB_N+1)
PLLFOUT
11
10
01
00
HCLK
4~24 MHz
22.1184 MHz
32.768 kHz
CLKSEL2[3:2]
FDIV
BOD
10 kHz
11
10
CLKSEL2[17:16]
10 kHz
CLKSEL2[5:4]
CLKSEL1[31:28]
10 kHz
111
PLLFOUT
1
0
CLKSEL2[18]
10 kHz
1
0
CLKSEL0[8]
HIRC48
Figure 6.3-2 Clock Generator Global View Diagram