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STM32F103RC 参数 Datasheet PDF下载

STM32F103RC图片预览
型号: STM32F103RC
PDF下载: 下载PDF文件 查看货源
内容描述: 基于ARM的高性能线的32位MCU,具有高达512 KB的闪存, USB , CAN ,11个定时器,3个ADC和13通信接口 [Performance line, ARM-based 32-bit MCU with up to 512 KB Flash, USB, CAN, 11 timers, 3 ADCs and 13 communication interfaces]
分类和应用: 闪存通信
文件页数/大小: 118 页 / 1231 K
品牌: STMICROELECTRONICS [ ST ]
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Description  
STM32F103xC, STM32F103xD, STM32F103xE  
Standby mode  
The Standby mode is used to achieve the lowest power consumption. The internal  
voltage regulator is switched off so that the entire 1.8 V domain is powered off. The  
PLL, the HSI RC and the HSE crystal oscillators are also switched off. After entering  
Standby mode, SRAM and register contents are lost except for registers in the Backup  
domain and Standby circuitry.  
The device exits Standby mode when an external reset (NRST pin), an IWDG reset, a  
rising edge on the WKUP pin, or an RTC alarm occurs.  
Note:  
The RTC, the IWDG, and the corresponding clock sources are not stopped by entering Stop  
or Standby mode.  
DMA  
The flexible 12-channel general-purpose DMAs (7 channels for DMA1 and 5 channels for  
DMA2) are able to manage memory-to-memory, peripheral-to-memory and memory-to-  
peripheral transfers. The two DMA controllers support circular buffer management,  
removing the need for user code intervention when the controller reaches the end of the  
buffer.  
Each channel is connected to dedicated hardware DMA requests, with support for software  
trigger on each channel. Configuration is made by software and transfer sizes between  
source and destination are independent.  
2
The DMA can be used with the main peripherals: SPI, I C, USART, general-purpose, basic  
2
and advanced control timers TIMx, DAC, I S, SDIO and ADC.  
RTC (real-time clock) and backup registers  
The RTC and the backup registers are supplied through a switch that takes power either on  
V
supply when present or through the V  
pin. The backup registers are forty-two 16-bit  
DD  
BAT  
registers used to store 84 bytes of user application data. They are not reset by a system or  
power reset, and they are not reset when the device wakes up from the Standby mode.  
The real-time clock provides a set of continuously running counters which can be used with  
suitable software to provide a clock calendar function, and provides an alarm interrupt and a  
periodic interrupt. It is clocked by a 32.768 kHz external crystal, resonator or oscillator, the  
internal low power RC oscillator or the high-speed external clock divided by 128. The  
internal low-speed RC has a typical frequency of 40 kHz. The RTC can be calibrated using  
an external 512 Hz output to compensate for any natural quartz deviation. The RTC features  
a 32-bit programmable counter for long term measurement using the Compare register to  
generate an alarm. A 20-bit prescaler is used for the time base clock and is by default  
configured to generate a time base of 1 second from a clock at 32.768 kHz.  
Independent watchdog  
The independent watchdog is based on a 12-bit downcounter and 8-bit prescaler. It is  
clocked from an independent 40 kHz internal RC and as it operates independently from the  
main clock, it can operate in Stop and Standby modes. It can be used either as a watchdog  
to reset the device when a problem occurs, or as a free running timer for application timeout  
management. It is hardware or software configurable through the option bytes. The counter  
can be frozen in debug mode.  
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