M052LDN Datasheet, PDF (35/86 Pages) List of Unclassifed Manufacturers – 32-bit Microcontroller

M051 DN/DE
HIRC
111
LIRC
011
PLL FOUT
010
Reserved
001
HXT
000
CLKSEL0[2:0]
HIRC
HCLK
1
PLL FOUT
0
1/(HCLK_N+1)
CPUCLK
HCLK
PCLK
CPU
HDIV*
EBI
ACMP0
ACMP1
ACMP2*
ACMP3*
I2C0
I2C1*
FMC
SPI0
SPI1
CLKSEL1[4:5]*
HIRC
11
HCLK
10
PLL FOUT
01
HXT
00
CLKSEL1[3:2]
1/(ADC_N+1)
ADC
HIRC
11
PLL FOUT
01
HXT
00
1/(UART_N+1)
UART 0-2
CLKSEL1[25:24]
LIRC
BOD
Legend:
HXT = 4~24 MHz external high speed crystal oscillator
HIRC = 22.1184 MHz internal high speed RC oscillator
LIRC = 10 kHz internal low speed RC oscillator
Note: Before clock switching, both the pre-selected and newly selected clock sources must be
turned on and stable.
Figure 6-4 Clock Source Controller Overview (1/2)
Oct. 05, 2015
Page 35 of 86
Rev 1.03