参数资料
型号: ATTINY43U-SU
厂商: Atmel
文件页数: 83/158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
30
8048C–AVR–02/12
ATtiny43U
7.
Power Management and Sleep Modes
Sleep modes enable the application to shut down unused modules in the MCU, thereby saving
power. The AVR provides various sleep modes allowing the user to tailor the power consump-
tion to the application’s requirements.
When enabled, the Brown-out Detector (BOD) actively monitors the power supply voltage during
the sleep periods. To further save power, it is possible to disable the BOD in some sleep modes.
7.1
Sleep Modes
Figure 6-1 on page 23 presents the different clock systems in ATtiny43U, and their distribution.
The figure is helpful in selecting an appropriate sleep mode. Table 7-1 below shows the different
sleep modes and their wake-up sources.
Note:
1. For INT0, only level interrupt.
To enter any of the sleep modes, the SE bit in MCUCR must be written to logic one and a
SLEEP instruction must be executed. The SM[1:0] bits in the MCUCR Register select which
sleep mode (Idle, ADC Noise Reduction or Power-down) will be activated by the SLEEP instruc-
tion. See Table 7-2 on page 34 for a summary.
If an enabled interrupt occurs while the MCU is in a sleep mode, the MCU wakes up. The MCU
is then halted for four cycles in addition to the start-up time, executes the interrupt routine, and
resumes execution from the instruction following SLEEP. The contents of the Register File and
SRAM are unaltered when the device wakes up from sleep. If a reset occurs during sleep mode,
the MCU wakes up and executes from the Reset Vector.
Note that if a level triggered interrupt is used for wake-up the changed level must be held for
some time to wake up the MCU (and for the MCU to enter the interrupt service routine). See
7.1.1
Idle Mode
When the SM[1:0] bits are written to 00, the SLEEP instruction makes the MCU enter Idle mode,
stopping the CPU but allowing Analog Comparator, ADC, Timer/Counter, Watchdog, and the
interrupt system to continue operating. This sleep mode basically halts clk
CPU and clkFLASH, while
allowing the other clocks to run.
Table 7-1.
Active Clock Domains and Wake-up Sources in the Different Sleep Modes
Active Clock Domains
Oscillators
Wake-up Sources
Sleep Mode
clk
CPU
clk
FL
AS
H
clk
IO
clk
ADC
Mai
n
Clock
So
urce
En
abl
ed
INT
0
and
Pi
n
C
hang
e
SPM/EE
P
ROM
R
eady
ADC
Other
I/O
W
a
tchd
og
Interrupt
Idle
X
ADC Noise Reduction
X
XX
X
Power-down
X
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ATTINY44-15SSZ 功能描述:8位微控制器 -MCU 4KB Flash 15MHz Auto 125-degrees C 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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