参数资料
型号: STM32F205RET6TR
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 32-BIT, FLASH, 120 MHz, RISC MICROCONTROLLER, PQFP64
封装: 10 X 10 MM, ROHS COMPLIANT, LQFP-64
文件页数: 80/163页
文件大小: 2275K
代理商: STM32F205RET6TR
STM32F205xx, STM32F207xx
Description
Doc ID 15818 Rev 7
Figure 7.
Startup in regulator OFF: fast VDD slope
- power-down reset risen before VCAP_1/VCAP_2 stabilization
2.2.18
Real-time clock (RTC), backup SRAM and backup registers
The backup domain of the STM32F205xx and STM32F207xx includes:
The real-time clock (RTC)
4 Kbytes of backup SRAM
20 backup registers
The real-time clock (RTC) is an independent BCD timer/counter. Dedicated registers contain
the second, minute, hour (in 12/24 hour), week day, date, month, year, in BCD (binary-coded
decimal) format. Correction for 28, 29 (leap year), 30, and 31 day of the month are
performed automatically. The RTC provides a programmable alarm and programmable
periodic interrupts with wakeup from Stop and Standby modes.
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 32 kHz. The RTC can be calibrated using an external 512 Hz
output to compensate for any natural quartz deviation.
Two alarm registers are used to generate an alarm at a specific time and calendar fields can
be independently masked for alarm comparison. To generate a periodic interrupt, a 16-bit
programmable binary auto-reload downcounter with programmable resolution is available
and allows automatic wakeup and periodic alarms from every 120 s to every 36 hours.
A 20-bit prescaler is used for the time base clock. It is by default configured to generate a
time base of 1 second from a clock at 32.768 kHz.
The backup SRAM size is 4 Kbytes and can be enabled by software. When the backup RAM
is enabled the power consumption in Standby or VBAT mode is slightly higher (see
The backup registers are 32-bit registers used to store 80 bytes of user application data
when VDD power is not present. Backup registers are not reset by a system, a power reset,
or when the device wakes up from the Standby mode (see Section 2.2.19: Low-power
The RTC, backup RAM and backup registers are supplied through a switch that takes power
from either the VDD supply when present or the VBAT pin.
相关PDF资料
PDF描述
STM32F205RET6XXX 32-BIT, FLASH, 120 MHz, RISC MICROCONTROLLER, PQFP64
STM32F205RET7XXX 32-BIT, FLASH, 120 MHz, RISC MICROCONTROLLER, PQFP64
STM32F205REY6XXX 32-BIT, FLASH, 120 MHz, RISC MICROCONTROLLER, PBGA66
STM32F205RFT6TR 32-BIT, FLASH, 120 MHz, RISC MICROCONTROLLER, PQFP64
STM32F205RFT7XXX 32-BIT, FLASH, 120 MHz, RISC MICROCONTROLLER, PQFP64
相关代理商/技术参数
参数描述
STM32F205REY6TR 功能描述:ARM微控制器 - MCU 32-Bit ARM Cortex 512kb Connectivity 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
STM32F205RFT6 功能描述:ARM微控制器 - MCU 32BIT ARM Cortex M3 Connectivity 768kB 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
STM32F205RGT6 功能描述:ARM微控制器 - MCU 32BIT ARM Cortex M3 Connectivity 1024kB 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
STM32F205RGT6TR 功能描述:ARM微控制器 - MCU STM32F20 High-Perf M3 1Mb 120 MHz MCU 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
STM32F205RGT6V 制造商:STMicroelectronics 功能描述:MCU 32BIT CORTEX-M3 120MHZ 制造商:STMicroelectronics 功能描述:MCU 32BIT CORTEX-M3 120MHZ LQFP-64 制造商:STMicroelectronics 功能描述:MCU, 32BIT, CORTEX-M3, 120MHZ, LQFP-64 制造商:STMicroelectronics 功能描述:MCU, 32BIT, CORTEX-M3, 120MHZ, LQFP-64, Controller Family/Series:STM32F, Core Size:32bit, No. of I/O's:51, Supply Voltage Min:1.8V, Supply Voltage Max:3.6V, Digital IC Case Style:LQFP, No. of Pins:64, Program Memory Size:1MB