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| 型号： | STM32F105VCH7XXX |
| 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, BGA100 |
| 封装： | ROHS COMPLIANT, LFBGA-100 |
| 文件页数： | 42/90页 |
| 文件大小： | 998K |
| 代理商： | STM32F105VCH7XXX |
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STM32F105xx, STM32F107xx
Electrical characteristics
Figure 17.
Typical application with an 8 MHz crystal
1.
REXT value depends on the crystal characteristics. Typical value is in the range of 5 to 6RS.
Low-speed external clock generated from a crystal/ceramic resonator
The low-speed external (LSE) clock can be supplied with a 32.768 kHz crystal/ceramic
resonator oscillator. All the information given in this paragraph are based on characterization
results obtained with typical external components specified in Table 23. In the application,
the resonator and the load capacitors have to be placed as close as possible to the oscillator
pins in order to minimize output distortion and startup stabilization time. Refer to the crystal
resonator manufacturer for more details on the resonator characteristics (frequency,
package, accuracy).
Table 22.
HSE 3-25 MHz oscillator characteristics(1) (2)
1.
Resonator characteristics given by the crystal/ceramic resonator manufacturer.
2.
Based on characterization, not tested in production.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
fOSC_IN
Oscillator frequency
3
25
MHz
RF
Feedback resistor
200
k
Ω
CL1
CL2
(3)
3.
For CL1 and CL2 it is recommended to use high-quality ceramic capacitors in the 5 pF to 25 pF range (typ.),
designed for high-frequency applications, and selected to match the requirements of the crystal or
resonator. 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. PCB and MCU pin capacitance must be
included (10 pF can be used as a rough estimate of the combined pin and board capacitance) when sizing
CL1 and CL2.
Recommended load capacitance
versus equivalent serial
resistance of the crystal (RS)
(4)
4.
The relatively low value of the RF resistor offers a good protection against issues resulting from use in a
humid environment, due to the induced leakage and the bias condition change. However, it is
recommended to take this point into account if the MCU is used in tough humidity conditions.
RS = 30 Ω
30
pF
i2
HSE driving current
VDD = 3.3 V, VIN =VSS
with 30 pF load
1mA
gm
Oscillator transconductance
Startup
25
mA/V
tSU(HSE
(5)
5.
tSU(HSE) is the startup time measured from the moment it is enabled (by software) to a stabilized 8 MHz
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
2
ms
ai14128b
OSC_OU T
OSC_IN
fHSE
CL1
RF
STM32F10xxx
8 MH z
resonator
Resonator with
integrated capacitors
Bias
controlled
gain
REXT(1)
CL2
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相关代理商/技术参数 |
参数描述 |
|---|---|
| STM32F105VCT6 | 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 |
| STM32F105VCT6TR | 功能描述:32位微控制器 - MCU Connective ARM 32Bit 256kB Flash USB OTG RoHS:否 制造商:Texas Instruments 核心:C28x 处理器系列:TMS320F28x 数据总线宽度:32 bit 最大时钟频率:90 MHz 程序存储器大小:64 KB 数据 RAM 大小:26 KB 片上 ADC:Yes 工作电源电压:2.97 V to 3.63 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:LQFP-80 安装风格:SMD/SMT |
| STM32F105VCT6V | 制造商:STMicroelectronics 功能描述:MCU 32BIT CORTEX-M3 72MHZ LQFP-100 制造商:STMicroelectronics 功能描述:MCU, 32BIT, CORTEX-M3, 72MHZ, LQFP-100, Controller Family/Series:STM32F, Core Si 制造商:STMicroelectronics 功能描述:MCU, 32BIT, CORTEX-M3, 72MHZ, LQFP-100, Controller Family/Series:STM32F, Core Size:32bit, No. of I/O's:80, Supply Voltage Min:2V, Supply Voltage Max:3.6V, Digital IC Case Style:LQFP, No. of Pins:100, Program Memory Size:256KB |
| STM32F105VCT6W | 制造商:STMicroelectronics 功能描述:MCU 32BIT CORTEX-M3 72MHZ LQFP-100 制造商:STMicroelectronics 功能描述:MCU, 32BIT, CORTEX-M3, 72MHZ, LQFP-100 制造商:STMicroelectronics 功能描述:MCU, 32BIT, CORTEX-M3, 72MHZ, LQFP-100, Controller Family/Series:STM32F, Core Si 制造商:STMicroelectronics 功能描述:MCU, 32BIT, CORTEX-M3, 72MHZ, LQFP-100, Controller Family/Series:STM32F, Core Size:32bit, No. of I/O's:80, Supply Voltage Min:2V, Supply Voltage Max:3.6V, Digital IC Case Style:LQFP, No. of Pins:100, Program Memory Size:256KB |
| STM32F105VCT7 | 功能描述:ARM微控制器 - MCU 32-Bit Cortex 64Kb Connectivity Line 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 |
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