M0564LE4AE Datasheet, PDF (82/161 Pages) List of Unclassifed Manufacturers – 32-BIT MICROCONTROLLER

M0564
Clock Source
HXT
PLL
HIRC48
HIRC
LIRC
LXT
Clock Stable Count Value
Clock Stable Time
4096 HXT clock
341.33 uS for 12 Mhz
It’s based on the value of STBSEL (CLK_PLLCTL[23])
STBSEL = 0, 512 uS for 512 Mhz
STBSEL = 0, stable count is 6144 clocks of PLL clock source.
STBSEL = 1, 1024 uS for 12 Mhz
STBSEL = 1, stable count is 12288 clocks of PLL clock source.
(Default)
512 HIRC48 clock
10.67 uS for 48 Mhz
256 HIRC clock
11.574 uS for 22.1184 Mhz
1 LIRC clock
100 uS for 10 kHz
1 LXT clock
30.51 uS for 32.768 khz
Table 6.3-8 Clock Stable Count Value Table
LXTEN (CLK_PWRCTL[1])
X32_IN
X32_OUT
XT1_IN
XT1_OUT
External 32.768
kHz Crystal
LXT
(LXT)
HXTEN (CLK_PWRCTL[0])
HXT
External 4~24
MHz Crystal
(HXT)
HIRCEN (CLK_PWRCTL[2])
Internal
22.1184 MHz
Oscillator
(HIRC)
LIRCEN(CLK_PWRCTL[3])
PLLSRC (CLK_PLLCTL[19])
0
PLL ^{PLL FOUT}
1
HIRC
Internal10 KHz
Oscillator
LIRC
(LIRC)
LIRCEN(CLK_PWRCTL[13])
Internal 48 MHz
Oscillator
(HIRC48)
HIRC48
Note: Before clock switching, both the pre-selected and newly selected clock source must be turned on and stable.
Figure 6.3-1 Clock Generator Block Diagram
May 05, 2017
Page 82 of 161
Rev 1.00