C8051F340-GQR Datasheet, PDF (246/276 Pages) Silicon Laboratories – Full Speed USB Flash MCU Family

C8051F340/1/2/3/4/5/6/7/8/9/A/B/C/D
When T2SPLIT = ‘1’, the Timer 2 registers (TMR2H and TMR2L) act as two 8-bit counters. Each counter
counts up independently and overflows from 0xFF to 0x00. Each time a capture event is received, the con-
tents of the Timer 2 registers are latched into the Timer 2 Reload registers (TMR2RLH and TMR2RLL). A
Timer 2 interrupt is generated if enabled.
TMR2CN
TTTTTTTT
FFF 2 2R2 2
2 2 2CS2CX
HL LEP SC
E L SL
NI K
T
SYSCLK / 12
0
External Clock / 8
1
CKCON
TTTTTTSS
3 3 2 2 1 0CC
MMMMMMA A
HLHL 10
0
TR2
1
SYSCLK
Capture
TMR2RLH
TCLK
TMR2H
To SMBus
Capture
TMR2RLL
Enable
1
TCLK _TMR2L
To ADC,
SMBus
0
USB Start-of-Frame (SOF)
0
Low-Frequency Oscillator
Falling Edge
1
T2CSS
Figure 21.7. Timer 2 Capture Mode (T2SPLIT = ‘1’)
Interrupt
246
Rev. 1.3