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参数资料
| 型号： | STM32F105RBT7XXX |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, FLASH, 72 MHz, RISC MICROCONTROLLER, PQFP64 |
| 封装： | 10 X 10 MM, ROHS COMPLIANT, LQFP-64 |
| 文件页数： | 42/95页 |
| 文件大小： | 1007K |
| 代理商： | STM32F105RBT7XXX |
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STM32F105xx, STM32F107xx
Electrical characteristics
Doc ID 15274 Rev 4
47/95
resonator manufacturer for more details on the resonator characteristics (frequency,
package, accuracy).
Note:
For CL1 and CL2 it is recommended to use high-quality external ceramic capacitors in the
5 pF to 15 pF range selected to match the requirements of the crystal or resonator (see
Figure 16). CL1 and CL2, are usually the same size. The crystal manufacturer typically
specifies a load capacitance which is the series combination of CL1 and CL2.
Load capacitance CL has the following formula: CL = CL1 x CL2 / (CL1 + CL2) + Cstray where
Cstray is the pin capacitance and board or trace PCB-related capacitance. Typically, it is
between 2 pF and 7 pF.
Caution:
To avoid exceeding the maximum value of CL1 and CL2 (15 pF) it is strongly recommended
to use a resonator with a load capacitance CL
7 pF. Never use a resonator with a load
capacitance of 12.5 pF.
Example: if you choose a resonator with a load capacitance of CL = 6 pF, and Cstray = 2 pF,
then CL1 = CL2 = 8 pF.
Figure 16.
Typical application with a 32.768 kHz crystal
Table 23.
LSE oscillator characteristics (fLSE = 32.768 kHz)
(1)
1. Based on characterization, not tested in production.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
RF
Feedback resistor
5
M
C(2)
2. Refer to the note and caution paragraphs below the table, and to the application note AN2867 “Oscillator
design guide for ST microcontrollers”.
Recommended load capacitance
versus equivalent serial
resistance of the crystal (RS)
(3)
3. The oscillator selection can be optimized in terms of supply current using an high quality resonator with
small RS value for example MSIV-TIN32.768kHz. Refer to crystal manufacturer for more details
RS = 30 k
15
pF
I2
LSE driving current
VDD = 3.3 V, VIN = VSS
1.4
A
gm
Oscillator Transconductance
5
A/V
tSU(LSE)
(4)
4. tSU(LSE) is the startup time measured from the moment it is enabled (by software) to a stabilized
32.768 kHz oscillation is reached. This value is measured for a standard crystal resonator and it can vary
significantly with the crystal manufacturer
startup time
VDD is stabilized
3
s
ai14129b
OSC32_OU T
OSC32_IN
fLSE
CL1
RF
STM32F10xxx
32.768 KH z
resonator
Resonator with
integrated capacitors
Bias
controlled
gain
CL2
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相关代理商/技术参数 |
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|---|---|
| STM32F105RCT6 | 功能描述:ARM微控制器 - MCU 32BIT Cortex 64/25 CONNECTIVITY LINE M3 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 |
| STM32F105RCT6R | 制造商:STMicroelectronics 功能描述:16/32-BITS MICROS - Trays |
| STM32F105RCT6TR | 功能描述:ARM微控制器 - MCU 32-Bit ARM Cortex 256kb 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 |
| STM32F105RCT6V | 制造商:STMicroelectronics 功能描述:MCU 32BIT CORTEX-M3 72MHZ LQFP-64 制造商:STMicroelectronics 功能描述:MCU, 32BIT, CORTEX-M3, 72MHZ, LQFP-64, Controller Family/Series:STM32F, Core Siz 制造商:STMicroelectronics 功能描述:MCU, 32BIT, CORTEX-M3, 72MHZ, LQFP-64, Controller Family/Series:STM32F, Core Size:32bit, No. of I/O's:51, Supply Voltage Min:2V, Supply Voltage Max:3.6V, Digital IC Case Style:LQFP, No. of Pins:64, Program Memory Size:256KB |
| STM32F105RCT6W | 制造商:STMicroelectronics 功能描述:MCU 32BIT CORTEX-M3 72MHZ LQFP-64 制造商:STMicroelectronics 功能描述:MCU, 32BIT, CORTEX-M3, 72MHZ, LQFP-64 制造商:STMicroelectronics 功能描述:MCU, 32BIT, CORTEX-M3, 72MHZ, LQFP-64, Controller Family/Series:STM32F, Core Siz 制造商:STMicroelectronics 功能描述:MCU, 32BIT, CORTEX-M3, 72MHZ, LQFP-64, Controller Family/Series:STM32F, Core Size:32bit, No. of I/O's:51, Supply Voltage Min:2V, Supply Voltage Max:3.6V, Digital IC Case Style:LQFP, No. of Pins:64, Program Memory Size:256KB |
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