參數(shù)資料
型號(hào)： MQ80C52TXXX-20:D
廠商： ATMEL CORP
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 20 MHz, MICROCONTROLLER, CQFP44
封裝： CERAMIC, QFP-44
文件頁數(shù)： 21/81頁
文件大?。?/td> 663K
28
ATtiny28L/V
1062F–AVR–07/06
AIN1 – Port B, Bit 1
AIN1, Analog Comparator Negative input. When the on-chip analog comparator is
enabled, this pin also serves as the negative input of the comparator. If the analog com-
parator is enabled, the pull-up resistors on PB1 and PB0 are disabled and these pins will
not give low-level interrupts.
AIN0 – Port B, Bit 0
AIN0, Analog Comparator Positive input. When the on-chip analog comparator is
enabled, this pin also serves as the positive input of the comparator. If the analog com-
parator is enabled, the pull-up resistors on PB1 and PB0 are disabled and these pins will
not give low-level interrupts.
Port B Schematics
Note that all port pins are synchronized. The synchronization latches are, however, not
shown in the figures.
Figure 23. Port B Schematic Diagram (Pins PB0 and PB1)
DA
T
A
BUS
MOS
PULL-
UP
PBn
RP: READ PORTB PIN
n : 0, 1
PULL-UP PORT B
COMPARATOR DISABLE
RP
TO LOW-LEVEL DETECTOR
TO COMPARATOR
AINn
PWRDN
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