參數(shù)資料
型號(hào): C8051F2XX
廠商: Electronic Theatre Controls, Inc.
英文描述: Mixed Signal 8 kB ISP Flash MCU Family
中文描述: 混合信號(hào)8 KB的閃存MCU系列的ISP
文件頁數(shù): 135/146頁
文件大?。?/td> 1856K
代理商: C8051F2XX
C8051F2xx
Rev. 1.6
135
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.
Figure 17.5. T2 Mode 1 Block Diagram
TL2
TH2
TR2
T2
SYSCLK
12
0
1
1
0
TCLK
RCAP2L
RCAP2H
Reload
CKCON
T
2
M
M
T
1
T
0
M
Interrupt
T
RCLK
EXF2
TF2
TCLK
TR2
C/T2
CP/RL2
PORT0
MUX
EXEN2
PORT0
MUX
T2EX
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