参数资料
型号: ATTINY43U-SU
厂商: Atmel
文件页数: 19/158页
文件大小: 0K
描述: MCU AVR 4K FLASH 8MHZ 20-SOIC
产品培训模块: ATtiny43U Overview
MCU Product Line Introduction
tinyAVR Introduction
标准包装: 37
系列: AVR® ATtiny
核心处理器: AVR
芯体尺寸: 8-位
速度: 8MHz
连通性: USI
外围设备: 欠压检测/复位,POR,PWM,温度传感器,WDT
输入/输出数: 16
程序存储器容量: 4KB(2K x 16)
程序存储器类型: 闪存
EEPROM 大小: 64 x 8
RAM 容量: 256 x 8
电压 - 电源 (Vcc/Vdd): 1.8 V ~ 5.5 V
数据转换器: A/D 4x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 20-SOIC(0.295",7.50mm 宽)
包装: 管件
产品目录页面: 613 (CN2011-ZH PDF)
配用: ATSTK600-TINYX3U-ND - STK600 SOCKET/ADAPTER TINYX3U
115
8048C–AVR–02/12
ATtiny43U
15.2
Register Description
15.2.1
ADCSRB – ADC Control and Status Register B
Bit 6 – ACME: Analog Comparator Multiplexer Enable
When this bit is written logic one and the ADC is switched off (ADEN in ADCSRA is zero), the
ADC multiplexer selects the negative input to the Analog Comparator. When this bit is written
logic zero, AIN1 is applied to the negative input of the Analog Comparator. For a detailed
15.2.2
ACSR – Analog Comparator Control and Status Register
Bit 7 – ACD: Analog Comparator Disable
When this bit is written logic one, the power to the Analog Comparator is switched off. This bit
can be set at any time to turn off the Analog Comparator. This will reduce power consumption in
Active and Idle mode. When changing the ACD bit, the Analog Comparator Interrupt must be
disabled by clearing the ACIE bit in ACSR. Otherwise an interrupt can occur when the bit is
changed.
Bit 6 – ACBG: Analog Comparator Bandgap Select
When this bit is set, a fixed bandgap reference voltage replaces the positive input to the Analog
Comparator. When this bit is cleared, AIN0 is applied to the positive input of the Analog
Comparator.
Bit 5 – ACO: Analog Comparator Output
The output of the Analog Comparator is synchronized and then directly connected to ACO. The
synchronization introduces a delay of 1 - 2 clock cycles.
Table 15-1.
Analog Comparator Multiplexed Input
ACME
ADEN
MUX[2:0]
Analog Comparator Negative Input
0X
XXX
AIN1
11
XXX
AIN1
1
0
000
ADC0
1
0
001
ADC1
1
0
010
ADC2
1
0
011
ADC3
Bit
7
6543210
BS
ACME
ADLAR
ADTS2
ADTS1
ADTS0
ADCSRB
Read/Write
R
R/W
R
R/W
R
R/W
Initial Value
0
0000000
Bit
765
432
10
ACD
ACBG
ACO
ACI
ACIE
ACIS1
ACIS0
ACSR
Read/Write
R/W
R
R/W
Initial Value
0
N/A
0
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