参数资料
型号: R5F71474AK64FPV
元件分类: 微控制器/微处理器
英文描述: 32-BIT, FLASH, 64 MHz, RISC MICROCONTROLLER, PQFP100
封装: 14 X 14 MM, 0.50 MM PITCH, PLASTIC, LQFP-100
文件页数: 23/123页
文件大小: 6757K
代理商: R5F71474AK64FPV
188
ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET]
8285E–AVR–02/2013
22. AC - Analog Comparator
The Analog Comparator compares the input values on the positive pin AIN0 and negative pin AIN1. When the volt-
age on the positive pin AIN0 is higher than the voltage on the negative pin AIN1, the Analog Comparator output,
ACO, is set. The comparator’s output can be set to trigger the Timer/Counter1 Input Capture function. In addition,
the comparator can trigger a separate interrupt, 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 22-1.
The Power Reduction ADC bit, PRADC, in ”PRR – Power Reduction Register” on page 42 must be disabled by
writing a logical zero to be able to use the ADC input MUX.
Figure 22-1. Analog Comparator, block diagram
Notes:
2. Refer to Figure 1-1 on page 2 and Figure 14-5 on page 66 for Analog Comparator pin placement.
22.1
Analog Comparator Multiplexed Input
It is possible to select any of the ADC7:0 pins to replace the negative input to the Analog Comparator. 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 ADC-
SRA is zero), MUX2:0 in ADMUX select the input pin to replace the negative input to the Analog Comparator, as
shown in Table 22-1. 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 22-1.
Analog Comparator multiplexed input.
ACME
ADEN
MUX2:0
Analog Comparator negative input
0
x
xxx
AIN1
1
xxx
AIN1
1
0
000
ADC0
1
0
001
ADC1
1
0
010
ADC2
1
0
011
ADC3
1
0
100
ADC4
相关PDF资料
PDF描述
R5F71424AK64FPV 32-BIT, FLASH, 64 MHz, RISC MICROCONTROLLER, PQFP100
R5F71474BJ80FPV 32-BIT, FLASH, 80 MHz, RISC MICROCONTROLLER, PQFP100
R5F71424AK64FPV 32-BIT, FLASH, 64 MHz, RISC MICROCONTROLLER, PQFP100
R5F71426BJ80FPV 32-BIT, FLASH, 80 MHz, RISC MICROCONTROLLER, PQFP100
R5F71474BD80FPV 32-BIT, FLASH, 80 MHz, RISC MICROCONTROLLER, PQFP100
相关代理商/技术参数
参数描述
R5F71475BJ80FPV 制造商:Renesas Electronics Corporation 功能描述:32 BIT RISC MCU, FLASH - Bulk
R5F71476BD80FPV 制造商:Renesas Electronics Corporation 功能描述:32 BIT RISC MCU, FLASH - Bulk
R5F71476BJ80FPV 制造商:Renesas Electronics Corporation 功能描述:32 BIT RISC MCU, FLASH - Bulk
R5F72115D160FPV 制造商:Renesas Electronics Corporation 功能描述:8-Bit Micro, 32K RAM R5F72115D160FPV
R5F72145ADBG#U1 功能描述:MCU 512K ROM 64K RAM 176-BGA RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:SuperH® SH7214 标准包装:160 系列:S08 核心处理器:S08 芯体尺寸:8-位 速度:40MHz 连通性:I²C,LIN,SCI,SPI 外围设备:LCD,LVD,POR,PWM,WDT 输入/输出数:53 程序存储器容量:32KB(32K x 8) 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:1.9K x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 5.5 V 数据转换器:A/D 12x12b 振荡器型:内部 工作温度:-40°C ~ 105°C 封装/外壳:64-LQFP 包装:托盘