參數(shù)資料
型號(hào): STM32F103RB
廠商: 意法半導(dǎo)體
英文描述: Performance Line, ARM-based 32-bit MCU with Flash, USB, CAN,Seven 16-bit Timers, Two ADCs and Nine Communication interfaces(增強(qiáng)型,基于ARM內(nèi)核的32位 MCU,帶有Flash,USB,CAN,7個(gè)16位計(jì)時(shí)器,兩個(gè)ADC,兩個(gè)DAC和9個(gè)通信接口)
中文描述: 績(jī)效線,基于ARM的閃存,USB,加拿大,7 16 32位MCU位計(jì)時(shí)器,兩個(gè)ADC和9個(gè)通信接口(增強(qiáng)型,基于ARM的內(nèi)核的32位微控制器,帶有閃存,USB,加拿大,7個(gè)16位計(jì)時(shí)器,兩個(gè)模數(shù)轉(zhuǎn)換器,兩個(gè)DAC的和9個(gè)通信接口)
文件頁(yè)數(shù): 54/79頁(yè)
文件大小: 1124K
代理商: STM32F103RB
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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