C8051F226DK Silicon Laboratories Inc, C8051F226DK Datasheet - Page 135

• Manufacturer Part Number: C8051F226DK
• Description: DEV KIT F220/221/226/230/231/236
• Manufacturer: Silicon Laboratories Inc
• Type: MCUr

Specifications of C8051F226DK

• Contents: Evaluation Board, Power Supply, USB Cables, Adapter and Documentation
• Processor To Be Evaluated: C8051F22x and C8051F23x
• Interface Type: USB
• Silicon Manufacturer: Silicon Labs
• Core Architecture: 8051
• Silicon Core Number: C8051F226
• Silicon Family Name: C8051F2xx
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: C8051F220, 221, 226, 230, 231, 236
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1241

17.2.2. Mode 1: 16-bit Counter/Timer with Auto-Reload
The Counter/Timer with Auto-Reload mode sets the TF2 timer overflow flag when the counter/timer regis-
ter overflows from 0xFFFF to 0x0000. An interrupt is generated if enabled. On overflow, the 16-bit value
held in the two capture registers (RCAP2H, RCAP2L) is automatically loaded into the counter/timer regis-
ter and the timer is restarted.
Counter/Timer with Auto-Reload mode is selected by clearing the CP/RL2 bit. Setting TR2 to logic 1
enables and starts the timer. Timer 2 can use either the system clock or transitions on an external input pin
as its clock source, as specified by the C/T2 bit. If EXEN2 is set to logic 1, a high-to-low transition on T2EX
will also cause Timer 2 to be reloaded. If EXEN2 is cleared, transitions on T2EX will be ignored.
SYSCLK
T2EX
T2
PORT0
PORT0
MUX
MUX
12
EXEN2
TR2
0
1
Figure 17.5. T2 Mode 1 Block Diagram
0
1
CKCON
M
T
2
M
T
1
M
T
0
Rev. 1.6
Reload
TCLK
RCAP2L
TL2
RCAP2H
TH2
C8051F2xx
CP/RL2
EXEN2
RCLK
TCLK
EXF2
C/T2
TR2
TF2
Interrupt
135