參數(shù)資料
型號(hào)： AT80C51-25R
廠商： TEMIC SEMICONDUCTORS
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 25 MHz, MICROCONTROLLER, PQFP44
文件頁數(shù)： 114/170頁
文件大?。?/td> 4133K
代理商： AT80C51-25R
48
ATtiny4/5/9/10 [DATASHEET]
8127F–AVR–02/2013
10.3.1
Alternate Functions of Port B
The Port B pins with alternate function are shown in Table 10-3 on page 48.
Port B, Bit 0 – ADC0/AIN0/OC0A/PCINT0/TPIDATA
ADC0: Analog to Digital Converter, Channel 0 (ATtiny5/10, only)
AIN0: Analog Comparator Positive Input. Configure the port pin as input with the internal pull-up switched off to
avoid the digital port function from interfering with the function of the Analog Comparator.
OC0A, Output Compare Match output: The PB0 pin can serve as an external output for the Timer/Counter0
Compare Match A. The pin has to be configured as an output (DDB0 set (one)) to serve this function. This is
also the output pin for the PWM mode timer function.
PCINT0: Pin Change Interrupt source 0. The PB0 pin can serve as an external interrupt source for pin change
interrupt 0.
TPIDATA: Serial Programming Data.
Port B, Bit 1 – ADC1/AIN1/CLKI/ICP0/OC0B/PCINT1/TPICLK
ADC1: Analog to Digital Converter, Channel 1 (ATtiny5/10, only)
AIN1: Analog Comparator Negative Input. Configure the port pin as input with the internal pull-up switched off to
avoid the digital port function from interfering with the function of the Analog Comparator.
CLKI: External Clock.
ICP0: Input Capture Pin. The PB1 pin can act as an Input Capture pin for Timer/Counter0.
OC0B: Output Compare Match output: The PB1 pin can serve as an external output for the Timer/Counter0
Compare Match B. The PB1 pin has to be configured as an output (DDB1 set (one)) to serve this function. The
OC0B pin is also the output pin for the PWM mode timer function.
Table 10-3.
Port B Pins Alternate Functions
Port Pin
Alternate Function
PB0
ADC0:
ADC Input Channel 0
AIN0:
Analog Comparator, Positive Input
OC0A:
Timer/Counter0 Compare Match A Output
PCINT0: Pin Change Interrupt 0, Source 0
TPIDATA:Serial Programming Data
PB1
ADC1:
ADC Input Channel 1
AIN1:
Analog Comparator, Negative Input
CLKI:
External Clock
ICP0:
Timer/Counter0 Input Capture Input
OC0B:
Timer/Counter0 Compare Match B Output
PCINT1:Pin Change Interrupt 0, Source 1
TPICLK: Serial Programming Clock
PB2
ADC2:
ADC Input Channel 2
CLKO:
System Clock Output
INT0:
External Interrupt 0 Source
PCINT2: Pin Change Interrupt 0, Source 2
T0:
Timer/Counter0 Clock Source
PB3
ADC3:
ADC Input Channel 3
PCINT3: Pin Change Interrupt 0, Source 3
RESET:Reset Pin
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