參數(shù)資料
型號： STM32F101R8T6AXX
廠商： STMICROELECTRONICS
元件分類： 微控制器/微處理器
英文描述： 32-BIT, FLASH, 36 MHz, RISC MICROCONTROLLER, PQFP64
封裝： 10 X 10 MM, 0.50 MM PITCH, ROHS COMPLIANT, LQFP-64
文件頁數(shù)： 37/75頁
文件大小： 1552K
代理商： STM32F101R8T6AXX
Electrical characteristics
STM32F101x6, STM32F101x8, STM32F101xB
Figure 19.
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
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).
Figure 20.
Typical application with a 32.768 kHz crystal
Table 23.
LSE oscillator characteristics (fLSE = 32.768 kHz)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
RF
Feedback resistor
5
M
Ω
CL1
CL2
Recommended load capacitance
versus equivalent serial
resistance of the crystal (RS)
(1)
1.
The oscillator selection can be optimized in terms of supply current using an high quality resonator with
small RS value for example MSIV-TIN32.768 kHz. Refer to crystal manufacturer for more details
RS = 30 KΩ
15
pF
I2
LSE driving current
VDD = 3.3 V
VIN = VSS
1.4
A
gm
Oscillator transconductance
5
A/V
tSU(LSE)
(2)
2.
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
ai14128b
OSC_OU T
OSC_IN
fHSE
CL1
RF
STM32F10xxx
8 MH z
resonator
Resonator with
integrated capacitors
Bias
controlled
gain
REXT(1)
CL2
ai14129b
OSC32_OU T
OSC32_IN
fLSE
CL1
RF
STM32F10xxx
32.768 KH z
resonator
Resonator with
integrated capacitors
Bias
controlled
gain
CL2
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
STM32F101R8T6TR 功能描述:ARM微控制器 - MCU 32BIT Cortex M3 Access Line RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 處理器系列:STM32F373xx 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:72 MHz 程序存儲器大小:256 KB 數(shù)據(jù) RAM 大小:32 KB 片上 ADC:Yes 工作電源電壓:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:LQFP-48 安裝風(fēng)格:SMD/SMT
STM32F101R8T6XXX 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Medium-density access line, ARM-based 32-bit MCU with 64 or 128 KB Flash, 6 timers, ADC and 7 communication interfaces
STM32F101R8U6TR 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Medium-density access line, ARM-based 32-bit MCU with 64 or 128 KB Flash, 6 timers, ADC and 7 communication interfaces
STM32F101R8U6XXX 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Medium-density access line, ARM-based 32-bit MCU with 64 or 128 KB Flash, 6 timers, ADC and 7 communication interfaces
STM32F101RB 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Medium-density access line, ARM-based 32-bit MCU with 64 or 128 KB Flash, 6 timers, ADC and 7 communication interfaces
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