参数资料
型号: STM32F103VBT6
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, PQFP100
封装: 14 X 14 MM, 0.50 MM PITCH, LQFP-100
文件页数: 54/79页
文件大小: 1124K
代理商: STM32F103VBT6
Electrical characteristics
STM32F103xx
Figure 23.
I2C bus AC waveforms and measurement circuit
1.
Measurement points are done at CMOS levels: 0.3VDD and 0.7VDD.
Table 39.
SCL frequency (fPCLK1= 36 MHz.,VDD = 3.3 V)
(1)(2)(3)
1.
TBD = to be determined.
2.
RP = External pull-up resistance, fSCL = I
2C speed,
3.
For speeds around 200 kHz, the tolerance on the achieved speed is of
±5%. For other speed ranges, the
tolerance on the achieved speed
±2%. These variations depend on the accuracy of the external
components used to design the application.
fSCL (kHz)
I2C_CCR value
RP = 4.7 k
400
TBD
300
TBD
200
TBD
100
TBD
50
TBD
20
TBD
ai14149b
START
SDA
100
4.7k
I2C bus
4.7k
100
VDD
STM32F103xx
SDA
SCL
tf(SDA)
tr(SDA)
SCL
th(STA)
tw(SCKH)
tw(SCKL)
tsu(SDA)
tr(SCK)
tf(SCK)
th(SDA)
S TART REPEATED
START
tsu(STA)
tsu(STO)
S TOP
tsu(STA:STO)
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