- 您现在的位置：买卖IC网 > Sheet目录323 > EFM32G-DK3550 (Energy Micro)KIT DEVELOPMENT EFM32 GECKO
...the world's most energy friendly microcontrollers
threshold voltage is reached, the EFM32G is kept in reset state. The operation of the POR is illustrated
in Figure 9.2 (p. 79) , with the active low POWERONn reset signal. The reason for the “unknown”
region is that the corresponding supply voltage is too low for any reliable operation.
Figure 9.2. RMU Power-on Reset Operation
V
V DD
VPORthr
POWERONn
Unknown
tim e
9.3.3 Brown-Out Detector Reset (BOD)
The EFM32G has 2 brownout detectors, one for the unregulated 3.0 V power and one for the internal 1.8
V power. The BODs are constantly monitoring the voltages. Whenever the voltage is below the VBODthr
value (see Electrical Characteristics for details), the corresponding active low BROWNOUTn line is held
low. The BODs also include hysteresis, which prevents instability in the corresponding BROWNOUTn
line when the supply is crossing the VBODthr limit. The operation of the BOD is illustrated in Figure 9.3 (p.
Figure 9.3. RMU Brown-out Detector Operation
V
VBODthr
V DD
BROWNOUTn
Unknown
VBODhyst
VBODhyst
Unknown
tim e
9.3.4 RESETn pin Reset
Forcing the RESETn pin low generates a reset of the EFM32G. The RESETn pin includes an on-chip pull-
up resistor, and can therefore be left unconnected if no external reset source is needed. Also connected
to the RESETn line is a filter which prevents glitches from resetting the EFM32G.
9.3.5 Watchdog Reset
The Watchdog circuit is a timer which (when enabled) must be cleared by software regularly. If software
does not clear it, a Watchdog reset is activated. This functionality provides recovery from a software
stalemate. Refer to the Watchdog section for specifications and description. A Watchdog reset does not
reset the Debug Interface. This allows an active debug session to continue in case of a Watchdog reset.
9.3.6 Lockup Reset
A Cortex-M3 lockup is the result of the core being locked up because of an unrecoverable exception
following the activation of the processor’s built-in system state protection hardware.
2011-04-12 - d0001_Rev1.10
79
www.energymicro.com
发布紧急采购，3分钟左右您将得到回复。
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