C8051F54X_14 Datasheet, PDF (239/275 Pages) Silicon Laboratories – Mixed Signal ISP Flash MCU Family

C8051F54x
This mode allows software to determine the external oscillator frequency when an RC network or capacitor
is used to generate the clock source.
T2XCLK
CKCON
TTTTTTSS
3 3 2 2 1 0CC
MMMMMMA A
HLHL 10
SYSCLK / 12
0
External Clock / 8
1
SYSCLK
0
TR2
1
TCLK _{TMR2L TMR2H}
Capture
External Clock / 8
TF2CEN
TMR2RLL TMR2RLH
TF2H
TF2L
TF2LEN
TF2CEN
T2SPLIT
TR2
T2XCLK
Figure 23.6. Timer 2 External Oscillator Capture Mode Block Diagram
Interrupt
Rev. 1.1
239