Pmc 1-Khz Lpo Clock; Cop Clocking - NXP Semiconductors MKL27Z128VFM4 Reference Manual

Module clocks
Module
ADC
CMP
DAC
Internal Voltage Reference
(VREF)
TPM
PIT
LPTMR
RTC
USB FS (Device Only)
SPI0
SPI1
2
I C0
2
I C1
LPUART0, LPUART1
UART2
FlexIO
2
I S
GPIO

5.7.1 PMC 1-kHz LPO clock

The Power Management Controller (PMC) generates a 1-kHz clock that is enabled in all
modes of operation, including all low-power modes except VLLS0. This 1-kHz source is
commonly referred to as LPO clock or 1-kHz LPO clock.

5.7.2 COP clocking

The COP may be clocked from four clock sources as shown in the following figure.
72
Table 5-2. Module clocks (continued)
Bus interface clock
Bus clock
Bus clock
Bus clock
Bus clock
Timers
Bus clock
Bus clock
Bus clock
Bus clock
Communication interfaces
System clock
Bus clock
System clock
System Clock
System Clock
Bus clock
Bus clock
Bus clock
Bus clock
Human-machine interfaces
Platform clock
KL27 Sub-Family Reference Manual , Rev. 5, 01/2016
Internal clocks
OSCERCLK
—
—
—
TPM clock
—
LPO, OSCERCLK,
MCGPCLK, ERCLK32K
ERCLK32K
USB FS clock
—
—
—
—
LPUART0 clock
LPUART1 clock
—
FlexIO clock
2
I S master clock
—
I/O interface clocks
—
—
—
—
TPM_CLKIN0, TPM_CLKIN1
—
—
RTC_CLKOUT, RTC_CLKIN
—
SPI0_SCK
SPI1_SCK
I2C0_SCL
I2C1_SCL
—
—
—
I2S_TX_BCLK,
I2S_RX_BCLK
—
Freescale Semiconductor, Inc.