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参数资料
型号： TSC87C51-L16IEB
厂商： ATMEL CORP
元件分类： 微控制器/微处理器
英文描述： 8-BIT, OTPROM, 16 MHz, MICROCONTROLLER, PQFP44
封装： 1.40 MM HEIGHT, VQFP-44
文件页数： 153/176页
文件大小： 2962K
代理商： TSC87C51-L16IEB
78
2535J–AVR–08/10
ATtiny13
13. Analog Comparator
The Analog Comparator compares the input values on the positive pin AIN0 and negative pin
AIN1. When the voltage on the positive pin AIN0 is higher than the voltage on the negative pin
AIN1, the Analog Comparator output, ACO, is set. The comparator can trigger a separate inter-
rupt, exclusive to the Analog Comparator. The user can select Interrupt triggering on comparator
output rise, fall or toggle. A block diagram of the comparator and its surrounding logic is shown
in Figure 13-1 on page 78.
Figure 13-1. Analog Comparator Block Diagram
See Figure 1-1 on page 2, Table 10-5 on page 56, and Table 13-2 on page 80 for Analog Compar-
ator pin placement.
13.1 Analog Comparator Multiplexed Input
It is possible to select any of the ADC3..0 pins to replace the negative input to the Analog Com-
parator. The ADC multiplexer is used to select this input, and consequently, the ADC must be
switched off to utilize this feature. If the Analog Comparator Multiplexer Enable bit (ACME in
ADCSRB) is set and the ADC is switched off (ADEN in ADCSRA is zero), MUX1:0 in ADMUX
select the input pin to replace the negative input to the Analog Comparator, as shown in Table
13-1. If ACME is cleared or ADEN is set, AIN1 is applied to the negative input to the Analog
Comparator.
ACBG
BANDGAP
REFERENCE
ADC MULTIPLEXER
OUTPUT
ACME
ADEN
(1)
Table 13-1.
Analog Comparator Multiplexed Input
ACME
ADEN
MUX1..0
Analog Comparator Negative Input
0x
xx
AIN1
11
xx
AIN1
1
0
00
ADC0
1
0
01
ADC1
1
0
10
ADC2
1
0
11
ADC3
相关PDF资料
PDF描述
TSC87C51-20CBR 8-BIT, OTPROM, 20 MHz, MICROCONTROLLER, PQCC44
TSC87C51-25CIB 8-BIT, OTPROM, 25 MHz, MICROCONTROLLER, CQCC44
TSC87C51-33CBB 8-BIT, OTPROM, 33 MHz, MICROCONTROLLER, PQCC44
TSC87C52-33CDB 8-BIT, OTPROM, 33 MHz, MICROCONTROLLER, PQFP44
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