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參數(shù)資料
| 型號： | R5F3651KDFC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | MICROCONTROLLER, PQFP128 |
| 封裝： | 20 X 14 MM, 0.50 MM PITCH, LQFP-128 |
| 文件頁數(shù)： | 23/81頁 |
| 文件大小： | 879K |
| 代理商： | R5F3651KDFC |
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41
4317K–AVR–03/2013
AT90PWM2/3/2B/3B
8.
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.
To enter any of the five sleep modes, the SE bit in SMCR must be written to logic one and a
SLEEP instruction must be executed. The SM2, SM1, and SM0 bits in the SMCR Register select
which sleep mode (Idle, ADC Noise Reduction, Power-down, Power-save, or Standby) will be
activated by the SLEEP instruction. See Table 8-1 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 exe-
cutes from the Reset Vector.
Figure 7-1 on page 29 presents the different clock systems in the AT90PWM2/2B/3/3B, and their
distribution. The figure is helpful in selecting an appropriate sleep mode.
8.1
Sleep Mode Control Register – SMCR
The Sleep Mode Control Register contains control bits for power management.
Bits 3..1 – SM2..0: Sleep Mode Select Bits 2, 1, and 0
These bits select between the five available sleep modes as shown in Table 8-1.
Note:
1. Standby mode is only recommended for use with external crystals or resonators.
Bit 1 – 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 programmer’s
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.
8.2
Idle Mode
When the SM2..0 bits are written to 000, the SLEEP instruction makes the MCU enter Idle
mode, stopping the CPU but allowing SPI, USART, Analog Comparator, ADC, Timer/Counters,
Bit
76543210
–
SM2
SM1
SM0
SE
SMCR
Read/Write
RRRR
R/W
Initial Value
00000000
Table 8-1.
Sleep Mode Select
SM2
SM1
SM0
Sleep Mode
000
Idle
0
1
ADC Noise Reduction
010
Power-down
011
Reserved
100
Reserved
101
Reserved
110
Standby(1)
111
Reserved
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| R5F3651KDFC#U0 | 功能描述:MCU 4KB FLASH 384/16K 128-LQFP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:M16C™ M16C/60/65 產品培訓模塊:CAN Basics Part-1 CAN Basics Part-2 Electromagnetic Noise Reduction Techniques Part 1 M16C Product Overview Part 1 M16C Product Overview Part 2 標準包裝:1 系列:M16C™ M32C/80/87 核心處理器:M32C/80 芯體尺寸:16/32-位 速度:32MHz 連通性:EBI/EMI，I²C，IEBus，IrDA，SIO，UART/USART 外圍設備:DMA，POR，PWM，WDT 輸入/輸出數(shù):121 程序存儲器容量:384KB（384K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:24K x 8 電壓 - 電源 (Vcc/Vdd):3 V ~ 5.5 V 數(shù)據(jù)轉換器:A/D 34x10b，D/A 2x8b 振蕩器型:內部 工作溫度:-20°C ~ 85°C 封裝/外殼:144-LQFP 包裝:托盤 產品目錄頁面:749 (CN2011-ZH PDF) 配用:R0K330879S001BE-ND - KIT DEV RSK M32C/87 |
| R5F3651KNFC | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:This MCU consumes low power, and supports operating modes |
| R5F3651MCDFC | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:televisions, household appliances, office equipment, communication devices |
| R5F3651MCDFC#V0 | 制造商:Renesas Electronics Corporation 功能描述:M16C/65C 528+8/31 128LQFP 14X20 -40 TO +85 - Trays 制造商:Renesas Electronics Corporation 功能描述:IC MCU 16BIT 512KB FLASH 128LQFP |
| R5F3651MCNFC | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:televisions, household appliances, office equipment, communication devices |
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