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| 型號： | PONE-000-01 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | The ideal device for simple nodes, such as switches, actuators and sensor |
| 中文描述： | 在簡單的節(jié)點(diǎn)，如交換機(jī)，執(zhí)行器和傳感器的理想設(shè)備 |
| 文件頁數(shù)： | 38/56頁 |
| 文件大?。?/td> | 432K |
| 代理商： | PONE-000-01 |
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March 2000
CEWay
PL-One Data Sheet
D-CW-0100-04
Page 38 of 56
Timer/Counter Registers
Three 16-bit timer counters are provided. TCON and TMOD are used to set the mode of operation and to
control the running and interrupt generation of timer counters 0 and 1. T2CON controls operation of timer
counter 2. The timer/counter values are stored in three pairs of 8-bit registers (TL0, TH0, TL1, TH1, and
TL2, TH2). The value stored in timer counter 2 may be "captured" into RCAP2L and RCAP2H.
Timer/Counter Control (TCON)
Bit definitions for this register are as follows:
TCON.7
TF1. Timer 1 overflow flag. Set by hardware when timer/counter 1 overflows. Cleared by
hardware when processor calls the interrupt service routine.
TCON.6
TR1. Timer 1 run control. If 1, timer runs. If 0, timer is halted.
TCON.5
TF0. Timer 0 overflow flag. Set by hardware when timer/counter 0 overflows. Cleared by
hardware when processor calls the interrupt service routine.
TCON.4
TR0. Timer 0 run control. If 1, timer runs. If 0, timer is halted.
TCON.3
IE1. External interrupt 1 edge flag. Set by hardware when an External Interrupt 1 edge is
detected.
TCON.2
IT1. Interrupt 1 control bit. If 1, a falling edge triggers an interrupt. If 0, a low level triggers an
interrupt.
TCON.1
IE0. External interrupt 0 edge flag. Set by hardware when an External Interrupt 0 edge is
detected.
TCON.0
IT0. Interrupt 0 control bit. If 1, a falling edge triggers an interrupt. If 0, a low level triggers an
interrupt. This bit
must
be set to 1 for correct operation of the PLSES interrupt.
Timer/Counter Mode (TMOD)
TMOD.7
GATE1. Timer 1 gate flag. When TCON.6 is set and GATE1 = 1, timer/counter 1 will only run if
INT1 pin is 1 (hardware control). When GATE1 = 0, timer/counter 1 will only run if TCON.6 = 1 (software
control).
TMOD.6
C/NT1. Timer/Counter 1 selector. If 0 input is from internal system clock, if 1 input is from T1
pin.
TMOD.5
M1(1). Timer 1 Mode control bit M1.
TMOD.4
M0(1). Timer 1 Mode control bit M0.
TMOD.3
GATE0. Timer 0 gate flag. When TCON.6 is set and GATE0 = 1, timer/counter 1 will only run if
INT0 pin is 1 (hardware control). Note that this option is not very useful, since the value of the INT0 pin
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