參數(shù)資料
型號： P89C557E6
廠商： NXP Semiconductors N.V.
英文描述： Single-chip 8-bit microcontroller(單片8位微控制器)
中文描述： 單芯片8位微控制器（單片8位微控制器）
文件頁數(shù)： 23/64頁
文件大小： 476K
代理商： P89C557E6
Philips Semiconductors
Product specification
P83C557E6/P80C557E6
Single-chip 8-bit microcontroller
1999 Mar 02
23
Figure 20. Timer/Counter mode control (TCON) register.
7
6
5
4
3
2
1
0
TCON (88H)
TF1
TR1
TF0
TR0
IE1
IT1
IE0
IT0
Table 14.
Description of TCON bits
SYMBOL
BIT
FUNCTION
TF1
TCON.7
Timer 1 overflow flag. Set by hardware on Timer/Counter overflow. Cleared by hardware when processor
vectors to interrupt routine.
TR1
TCON.6
Timer 1 run control bit. Set/cleared by software to turn Timer/Counter on/off.
TF0
TCON.5
Timer 0 overflow flag. Set by hardware on Timer/Counter overflow. Cleared by hardware when processor
vectors to interrupt routine.
TR0
TCON.4
Timer 0 run control bit. Set/cleared by software to turn Timer/Counter on/off.
IE1
TCON.3
Interrupt 1 edge flag. Set by hardware when external interrupt edge detected. Cleared when interrupt
processed.
IT1
TCON.2
Interrupt 1 type control bit. Set/cleared by software to specify falling edge/low level triggered external interrupts.
IE0
TCON.1
Interrupt 0 edge flag. Set by hardware when external interrupt edge detected. Cleared when interrupt
processed.
IT0
TCON.0
Interrupt 0 type control bit. Set/cleared by software to specify falling edge/low level triggered external interrupts.
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