STM32F101C8 STMicroelectronics, STM32F101C8 Datasheet - Page 62

• Manufacturer Part Number: STM32F101C8
• Description: Mainstream Access line, ARM Cortex-M3 MCU with 64 Kbytes Flash, 36 MHz CPU
• Manufacturer: STMicroelectronics

Specifications of STM32F101C8

• Peripherals Supported: timers, ADC, SPIs, I2Cs and USARTs
• Conversion Range: 0 to 3.6 V
• Systick Timer: 24-bit downcounter

Electrical characteristics
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Figure 29. I
1. Measurement points are done at CMOS levels: 0.3V
Table 40.
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)
Start
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 13586 Rev 14
SCL
PCLK1
= I
4 .7 kΩ
2
C speed,
= 36 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)
STM32F10x
SDA
SCL
DD
t su(STA)
.
(1)(2)
STM32F101x8, STM32F101xB
I2C_CCR value
R
Stop
(1)
P
Start repeated
0x803C
0x801E
0x00B4
0x8028
0x0168
0x0384
= 4.7 kΩ
t su(STO)
t su(STO:STA)
Start
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