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参数资料
| 型号： | STR751FR0H6 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, FLASH, 48 MHz, RISC MICROCONTROLLER, PBGA64 |
| 封装： | 8 X 8 MM. 1.70 MM HEIGHT, ROHS COMPLIANT, LFBGA-64 |
| 文件页数： | 41/84页 |
| 文件大小： | 1656K |
| 代理商： | STR751FR0H6 |
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Electrical parameters
STR750Fxx STR751Fxx STR752Fxx STR755Fxx
4/8 MHz crystal / ceramic resonator oscillator (XT1/XT2)
The STR750 system clock or the input of the PLL can be supplied by a OSC4M which is a 4
MHz clock generated from a 4 MHz or 8 MHz crystal or ceramic resonator. If using an 8 MHz
oscillator, software set the XTDIV bit to enable a divider by 2 and generate a 4 MHz OSC4M
clock. All the information given in this paragraph are based on product characterisation with
specified typical external components. 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 start-up stabilization time. Refer to the crystal/ceramic resonator
manufacturer for more details (frequency, package, accuracy...).
Figure 21.
Typical application with a 4 or 8 MHz crystal or ceramic resonator
Table 22.
4/8 MHz crystal / ceramic resonator oscillator (XT1/XT2)(1)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
fOSC4M
Oscillator frequency
4 MHz Crystal/Resonator Oscillator
connected on XT1/XT2 XTDIV=0
or
8 MHz Crystal/Resonator Oscillator
connected on XT1/XT2 XTDIV=1
4MHz
RF
Feedback resistor
200
240
270
k
Ω
CL1
(2)
CL2
Recommended load
capacitance versus equivalent
serial resistance of the crystal or
ceramic resonator (RS)
(3)
RS=200Ω
60
pF
i2
XT2 driving current
VDD_IO=3.3 V or 5.0 V
425
μA
tSU(OSC4M)
(4)
Startup time at VDD_IO power-up
1
ms
1.
Resonator characteristics given by the crystal/ceramic resonator manufacturer.
2.
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 when sizing CL1 and CL2 (10 pF can be used as a rough estimate of the
combined pin and board capacitance).
3.
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.
4.
tSU(OSC4M) is the typical start-up time measured from the moment VDD_IO is powered (with a quick VDD_IO ramp-up from 0
to 3.3V (<50
μs) to a stabilized 4MHz oscillation is reached. This value is measured for a standard crystal resonator and it
can vary significantly with the crystal/ceramic resonator manufacturer.
XT2
XT1
fOSC4M
CL1
CL2
i2
RF
STR75X
RESONATOR
WHEN RESONATOR WITH
INTEGRATED CAPACITORS
VDD/2
Ref
FEEDBACK
LOOP
LINEAR
AMPLIFIER
XTDIV
/2
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相关代理商/技术参数 |
参数描述 |
|---|---|
| STR751FR0T6 | 功能描述:ARM微控制器 - MCU 32-BITS MICROS 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 |
| STR751FR0T6/MIN | 制造商:STMicroelectronics 功能描述: |
| STR751FR1 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:ARM7TDMI-S⑩ 32-bit MCU with Flash, SMI, 3 std 16-bit timers, PWM timer, fast 10-bit ADC, I2C, UART, SSP, USB and CAN |
| STR751FR1H6 | 功能描述:ARM微控制器 - MCU 16/32-BITS MICROS 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 |
| STR751FR1T6 | 功能描述:ARM微控制器 - MCU 32-BITS MICROS 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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