53
9152BINDCO02/10
ATA8743
some cases, the input logic is needed for detecting wake-up conditions, and it will then be
enabled. See the section Digital Input Enable and Sleep Modes on page 76 for details on
which pins are enabled. If the input buffer is enabled and the input signal is left floating or has an
analog signal level close to V
CC
/2, the input buffer will use excessive power.
For analog input pins, the digital input buffer should be disabled at all times. An analog signal
level close to V
CC
/2 on an input pin can cause significant current even in active mode. Digital
input buffers can be disabled by writing to the Digital Input Disable Register (DIDR0). See
DIDR0 Digital Input Disable Register 0 on page 172 for details.
15.8 Register Description
15.8.1
MCUCR MCU Control Register
The MCU Control Register contains control bits for power management.
" Bit 5 SE: Sleep Enable
The SE bit must be written to logic one to make the MCU enter the sleep mode when the SLEEP
instruction is executed. To avoid the MCU entering the sleep mode unless it is the programmers
purpose, it is recommended to write the Sleep Enable (SE) bit to one just before the execution of
the SLEEP instruction and to clear it immediately after waking up.
" Bits 4, 3 SM1..0: Sleep Mode Select Bits 2..0
These bits select between the three available sleep modes as shown in Table 15-2 on page 53.
Note:
1. Only recommended with external crystal or resonator selected as clock source
" Bit 2 Res: Reserved Bit
This bit is a reserved bit in the ATtiny24/44/84 and will always read as zero.
Bit
7
6
5
4
3
2
1
0
PUD
SE
SM1
SM0
ISC01
ISC00
MCUCR
Read/Write
R
R/W
R/W
R/W
R/W
R
R/W
R/W
Initial Value
0
0
0
0
0
0
0
0
Table 15-2. Sleep Mode Select
SM1
SM0
Sleep Mode
0
0
Idle
0
1
ADC Noise Reduction
1
0
Power-down
1
1
Standby
(1)
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
ATAVRRZ200
KIT DEMO AT86RF230
AV101-12LF
ATTENUATOR HIP3 0.70-1GHZ 8-SOIC
AV102-12LF
ATTENUATOR HIP3 1.7-2GHZ 8SOIC
AV113-12LF
ATTENUATOR HIP3 2.1-2.3GHZ 8SOIC
AXUV100G
SENSOR ELECTRON DETECTION
B0205F50200AHF
XFRMR BALUN RF 200-500MHZ 1608
B0310J50100AHF
XFRMR BALUN RF 300-1000MHZ 0805
B0322J5050AHF
XFRMR BALUN RF 300-2200MHZ 0805
相关代理商/技术参数
ATAB5275
功能描述:射频开发工具 LF Tx Antenna driver board (TPMS) RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V
ATAB5276
功能描述:射频开发工具 1A Antenna Driver Demoboard RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V
ATAB5278
功能描述:射频开发工具 LF Tx Antenna driver board (PEG) RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V
ATAB5279
功能描述:射频开发工具 LF Transmitter with ATA5279 RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V
ATAB5282
功能描述:BOARD EVAL LF 125KHZ ANT DVR 3CH RoHS:是 类别:RF/IF 和 RFID >> RFID 评估和开发套件及电路板 系列:Smart RF 产品培训模块:M24LR64 Dual Interface EEPROM 标准包装:1 系列:- 类型:读取器模块 频率:13.56MHz 适用于相关产品:M24LR-64-R 已供物品:2 根基准天线，I2C 和 RFID 读取器，样品 其它名称:497-10480
ATAB5283
功能描述:射频开发工具 LF Rx Board 1 channel (TPMS)
RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V
ATAB5423-3-B
功能描述:射频开发工具 UHF Transceiver Base station Board 315MHz
RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V
ATAB5423-3-WB
功能描述:射频开发工具 UHF TRx Application Board 315MHz RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V