参数资料
| 型号： | ATTINY84A-CCU |
| 厂商： | Atmel |
| 文件页数： | 66/135页 |
| 文件大小： | 0K |
| 描述： | IC MCU 8BIT 8K FLASH 15UFBGA |
| 标准包装： | 490 |
| 系列： | AVR® ATtiny |
| 核心处理器： | AVR |
| 芯体尺寸： | 8-位 |
| 速度： | 20MHz |
| 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： | 12 |
| 程序存储器容量： | 8KB（4K x 16） |
| 程序存储器类型： | 闪存 |
| EEPROM 大小： | 512 x 8 |
| RAM 容量： | 512 x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 1.8 V ~ 5.5 V |
| 数据转换器： | A/D 8x10b |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 15-UFBGA |
| 包装： | 托盘 |
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35
8183F–AVR–06/12
ATtiny24A/44A/84A
7.3
Power Reduction Register
The Power Reduction Register (PRR), see “PRR – Power Reduction Register” on page 37, pro-
vides a method to reduce power consumption by stopping the clock to individual peripherals.
When the clock for a peripheral is stopped then:
The current state of the peripheral is frozen.
The associated registers can not be read or written.
Resources used by the peripheral will remain occupied.
The peripheral should in most cases be disabled before stopping the clock. Clearing the PRR bit
wakes up the peripheral and puts it in the same state as before shutdown.
Peripheral shutdown can be used in Idle mode and Active mode to significantly reduce the over-
all power consumption. See “Supply Current of I/O Modules” on page 182 for examples. In all
other sleep modes, the clock is already stopped.
7.4
Minimizing Power Consumption
There are several issues to consider when trying to minimize the power consumption in an AVR
controlled system. In general, sleep modes should be used as much as possible, and the sleep
mode should be selected so that as few as possible of the device’s functions are operating. All
functions not needed should be disabled. In particular, the following modules may need special
consideration when trying to achieve the lowest possible power consumption.
7.4.1
Analog to Digital Converter
If enabled, the ADC will be enabled in all sleep modes. To save power, the ADC should be dis-
abled before entering any sleep mode. When the ADC is turned off and on again, the next
conversion will be an extended conversion. See “Analog to Digital Converter” on page 132 for
details on ADC operation.
7.4.2
Analog Comparator
When entering Idle mode, the Analog Comparator should be disabled if not used. When entering
ADC Noise Reduction mode, the Analog Comparator should be disabled. In the other sleep
modes, the Analog Comparator is automatically disabled. However, if the Analog Comparator is
set up to use the Internal Voltage Reference as input, the Analog Comparator should be dis-
abled in all sleep modes. Otherwise, the Internal Voltage Reference will be enabled,
independent of sleep mode. See “Analog Comparator” on page 128 for details on how to config-
ure the Analog Comparator.
7.4.3
Brown-out Detector
If the Brown-out Detector is not needed in the application, this module should be turned off. If the
Brown-out Detector is enabled by the BODLEVEL Fuses, it will be enabled in all sleep modes,
and hence, always consume power. In the deeper sleep modes, this will contribute significantly
to the total current consumption. See “Brown-out Detection” on page 40 and “Software BOD Dis-
able” on page 34 for details on how to configure the Brown-out Detector.
7.4.4
Internal Voltage Reference
The Internal Voltage Reference will be enabled when needed by the Brown-out Detection, the
Analog Comparator or the ADC. If these modules are disabled as described in the sections
above, the internal voltage reference will be disabled and it will not be consuming power. When
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| ATTINY84A-CCUR | 功能描述:8位微控制器 -MCU 20MHz Ind. Grade RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| ATTINY84A-MF | 制造商:Atmel Corporation 功能描述:IC MCU 8BIT 8KB FLASH 20QFN 制造商:Atmel Corporation 功能描述:AVR, 8K FLASH 2K SRAM, 1KB EEPROM - 16MHz, 4x4 WQFN, High Grade +125C, Green |
| ATTINY84A-MFR | 制造商:Atmel Corporation 功能描述:16MHZ,4X4WQFN,HIGH GRADE +125C,GREEN,T&R - Tape and Reel 制造商:Atmel Corporation 功能描述:IC MCU 8BIT 8KB FLASH 20QFN 制造商:Atmel Corporation 功能描述:AVR, 8K FLASH 2K SRAM, 1KB EEPROM - 16MHz,4x4WQFN,High Grade +125C,Green,T&R |
| ATTINY84A-MMH | 功能描述:8位微控制器 -MCU 20MHz Ind. Grade RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| ATTINY84A-MMHR | 功能描述:8位微控制器 -MCU 20MHz Ind Grade RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
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