收藏本站
? Low frequency peripheral functionality (RTC, Watchdog, LCD, LEUART, I C, LETIMER, PCNT) is
...the world's most energy friendly microcontrollers
? The low frequency oscillator and clock trees are active
2
available
? Wakeup through peripheral interrupt or asynchronous pin interrupt
? RAM and register values are preserved
10.3.1.4 EM3
Wakeup through asynchronous pin interrupts, I C address recognition or ACMP edge interrupt
?
?
?
?
?
Both high and low frequency oscillators and clock trees are inactive
2
Watchdog enabled when 1 kHz clock has been selected
All other peripheral functionality is disabled
RAM and register values are preserved
10.3.1.5 EM4
? All oscillators and regulators are inactive
? RAM and register values are not preserved
? Wakeup from external pin reset
10.3.2 Entering a Low Energy Mode
A low energy mode is entered by first configuring the desired Energy Mode through the EMU_CTRL
register and the SLEEPDEEP bit in the Cortex-M3 System Control Register, see Table 10.2 (p. 87) .
A Wait For Interrupt (WFI) or Wait For Event (WFE) instruction from the Cortex-M3 triggers the transition
into a low energy mode.
The transition into a low energy mode can optionally be delayed until the lowest priority Interrupt Service
Routine (ISR) is exited, if the SLEEPONEXIT bit in the Cortex-M3 System Control Register is set.
Entering the lowest energy mode, EM4, is done by writing a sequence to the EM4CTRL bitfield in
the EMU_CTRL register. Writing a zero to the EM4CTRL bitfield will restart the power sequence.
EM2BLOCK prevents the EMU to enter EM2 or lower, and it will instead enter EM1.
EM3 is equal to EM2, except that the LFACLK/LFBCLK are disabled in EM3. The LFACLK/LFBCLK
must be disabled by the user before entering low energy mode.
The EMVREG bit in EMU_CTRL can be used to prevent the voltage regulator from being turned off in
low energy modes. The device will then essentially stay in EM1 when entering a low energy mode.
Table 10.2. EMU Entering a Low Energy Mode
Low Energy Mode
EM4CTRL
EMVREG
EM2BLOCK
SLEEPDEEP
Cortex-M3
Instruction
EM1
EM2
EM4
0
0
Write sequence:
x
0
x
x
0
x
0
1
x
WFI or WFE
WFI or WFE
x
2, 3, 2, 3, 2, 3, 2,
3, 2
(‘x’ means don’t care)
10.3.3 Leaving a Low Energy Mode
In each low energy mode a selection of peripheral units are available, and software can either enable or
disable the functionality. Enabled interrupts that can cause wakeup from a low energy mode is shown
2011-04-12 - d0001_Rev1.10
87
www.energymicro.com
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
EFM32GG-STK3700 KIT STARTER GIANT GECKO
EFM32LG-DK3650 KIT DEV EFM32 LEOPARD GECKO
EK-K7-KC705-CES-G-J KINTEX-7 FPGA KC705 EVAL KIT
EK-S6-SP601-G KIT EVAL SPARTAN 6 SP601
EK-S6-SP605-G KIT EVAL SPARTAN 6 SP605
EK-V6-ML631-G-J VIRTEX-6 HXT FPGA ML631 EVAL KIT
EK-V7-VC707-CES-G VIRTEX-7 VC707 EVAL KIT
EK-Z7-ZC702-CES-G ZYNQ-7000 EPP ZC702 EVAL KIT
相关代理商/技术参数
EFM32GG230F1024 功能描述:ARM微控制器 - MCU 1024KB FL 128KB RAM RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 处理器系列:STM32F373xx 数据总线宽度:32 bit 最大时钟频率:72 MHz 程序存储器大小:256 KB 数据 RAM 大小:32 KB 片上 ADC:Yes 工作电源电压:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:LQFP-48 安装风格:SMD/SMT
EFM32GG230F1024G-E-QFN64R 功能描述:IC MCU 32BIT 1MB FLASH 64QFN 制造商:silicon labs 系列:Giant Gecko 包装:剪切带（CT） 零件状态:在售 核心处理器:ARM? Cortex?-M3 核心尺寸:32-位 速度:48MHz 连接性:I2C，IrDA，智能卡，SPI，UART/USART 外设:欠压检测/复位，DMA，POR，PWM，WDT I/O 数:56 程序存储容量:1MB（1M x 8） 程序存储器类型:闪存 EEPROM 容量:- RAM 容量:128K x 8 电压 - 电源（Vcc/Vdd）:1.98 V ~ 3.8 V 数据转换器:A/D 8x12b，D/A 2x12b 振荡器类型:内部 工作温度:-40°C ~ 85°C（TA） 封装/外壳:64-VFQFN 裸露焊盘 供应商器件封装:64-QFN（9x9） 标准包装:1
EFM32GG230F1024-QFN64 制造商:Energy Micro AS 功能描述:GIANT GECKO MCU - Cut TR (SOS) 制造商:Energy Micro 功能描述:GIANT GECKO MCU 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 1MB FLASH 64QFN
EFM32GG230F1024-QFN64T 制造商:Energy Micro AS 功能描述:GIANT GECKO MCU - Trays
EFM32GG230F1024-QFN64-T 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 1MB FLASH 64QFN
EFM32-GG230F1024-SK 制造商:Energy Micro AS 功能描述:GIANT GECKO SAMPLE KIT - Bulk
EFM32GG230F1024-T 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 1MB FLASH 64QFN
EFM32GG230F512 功能描述:ARM微控制器 - MCU 512KB FL 128KB RAM RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 处理器系列:STM32F373xx 数据总线宽度:32 bit 最大时钟频率:72 MHz 程序存储器大小:256 KB 数据 RAM 大小:32 KB 片上 ADC:Yes 工作电源电压:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:LQFP-48 安装风格:SMD/SMT