NuMicro® NUC029LEE/NUC029SEE
32-bit Arm
®
Cortex
®
-M0 Microcontroller
Aug, 2018
Page
114
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497
Rev 1.00
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MICRO
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UC02
9L
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E
/N
UC029
S
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T
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CHN
ICA
L R
E
F
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NC
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M
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NU
A
L
XT1_IN
4~24 MHz
HXT
XTL12M_EN (PWRCON[0])
XT1_OUT
22.1184 MHz
HIRC
OSC22M_EN (PWRCON[2])
0
1
PLL
PLL_SRC (PLLCON[19])
PLL FOUT
10 kHz
LIRC
OSC10K_EN(PWRCON[3])
HXT
HIRC
LIRC
Legend:
LXT = 32.768 kHz external low speed crystal oscillator
HXT
= 4~24 MHz external high speed crystal oscillator
HIRC = 22.1184 MHz internal high speed RC oscillator
HIRC48 = 48 MHz internal high speed RC oscillator
LIRC = 10 kHz internal low speed RC oscillator
X32_IN
32.768 kHz
LXT
XTL32K_EN (PWRCON[1])
X32_OUT
LXT
48 MHz
HIRC48
OSC48M_EN(PWRCON[12])
HIRC48
Figure 6.3-1 Clock Generator Block Diagram