STM32F205REY6TR STMicroelectronics, STM32F205REY6TR Datasheet - Page 104
STM32F205REY6TR
Manufacturer Part Number
STM32F205REY6TR
Description
ARM Microcontrollers - MCU 32-Bit ARM Cortex 512kb Connectivity
Manufacturer
STMicroelectronics
Datasheet
1.STM32F207VFT6TR.pdf
(177 pages)
Specifications of STM32F205REY6TR
Product Category
ARM Microcontrollers - MCU
Rohs
yes
Core
ARM Cortex M3
Data Bus Width
32 bit
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Electrical characteristics
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Figure 38. I
1. Measurement points are done at CMOS levels: 0.3V
Table 51.
1. R
2. For speeds around 200 kHz, the tolerance on the achieved speed is of ±5%. For other speed ranges, the
t f(SDA)
tolerance on the achieved speed ±2%. These variations depend on the accuracy of the external
components used to design the application.
SDA
SCL
P
= External pull-up resistance, f
t w(SCLH)
S TART
SCL frequency (f
2
I²C bus
C bus AC waveforms and measurement circuit
t h(STA)
f
SCL
400
300
200
100
50
20
(kHz)
t r(SDA)
4 .7 kΩ
t r(SCL)
V DD
t w(SCLL)
Doc ID 15818 Rev 9
SCL
PCLK1
= I
4 .7 kΩ
2
C speed,
= 30 MHz.,V
t su(SDA)
V DD
100 Ω
100 Ω
t f(SCL)
DD
t h(SDA)
and 0.7V
DD
= 3.3 V)
STM32Fxx
SDA
SCL
DD
t su(STA)
.
(1)(2)
I2C_CCR value
R
S TOP
P
S TART REPEATED
0x012C
0x02EE
0x8019
0x8021
0x8032
0x0096
= 4.7 kΩ
t su(STO)
STM32F20xxx
t w(STO:STA)
S TART
ai14979b
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