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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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STC89LE53RC 데이터시트(PDF) 92 Page - STCmicro Technology Co,.Ltd |
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STC89LE53RC 데이터시트(HTML) 92 Page - STCmicro Technology Co,.Ltd |
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92 / 165 page  Interrupt SYSclk TL0 (5 Bits) TH0 (8 bits) TF0 control C/T=0 C/T=1 T0 Pin TR0 GATE INT0 ÷12 ÷6 MCU in 6T mode Timer/Counter 0 Mode 0: 13-Bit Counter MCU in 12T mode Mode 1 In this mode, the timer register is configured as a 16-bit register. As the count rolls over from all 1s to all 0s, it sets the timer interrupt flag TF0. The counted input is enabled to the timer when TR0 = 1 and either GATE=0 or INT0 = 1.(Setting GATE = 1 allows the Timer to be controlled by external input INT0 , to facilitate pulse width measurements.) TR0 is a control bit in the Special Function Register TCON. GATE is in TMOD. The 16-Bit register consists of all 8 bits of TH0 and the lower 8 bits of TL0. Setting the run flag (TR0) does not clear the registers. Mode 1 is the same as Mode 0, except that the timer register is being run with all 16 bits. Interrupt SYSclk TL0 (8 Bits) TH0 (8 bits) TF0 control C/T=0 C/T=1 T0 Pin TR0 GATE INT0 MCU in 12T mode ÷12 ÷6 MCU in 12T mode Timer/Counter 0 Mode 1 : 16-Bit Counter Mode 0 In this mode, the timer register is configured as a 13-bit register. As the count rolls over from all 1s to all 0s, it sets the timer interrupt flag TF0. The counted input is enabled to the timer when TR0 = 1 and either GATE=0 or INT0 = 1.(Setting GATE = 1 allows the Timer to be controlled by external input INT0 , to facilitate pulse width measurements.) TR0 is a control bit in the Special Function Register TCON. GATE is in TMOD. The 13-Bit register consists of all 8 bits of TH0 and the lower 5 bits of TL0. The upper 3 bits of TL0 are indeterminate and should be ignored. Setting the run flag (TR0) does not clear the registers. There are two different GATE bits. one for Timer 1 (TMOD.7) and one for Timer 0 (TMOD.3). 7.1 Timer/Counter 0 Mode of Operation 92 |
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