STM32F102RB STMicroelectronics, STM32F102RB Datasheet - Page 53

• Manufacturer Part Number: STM32F102RB
• Description: Mainstream USB Access line, ARM Cortex-M3 MCU with 128 Kbytes Flash, 48 MHz CPU, USB FS
• Manufacturer: STMicroelectronics

Specifications of STM32F102RB

• Core: ARM 32-bit Cortex™-M3 CPU
• Peripherals Supported: timers, ADC, SPIs, I2Cs and USARTs
• Conversion Range: 0 to 3.6 V
• Systick Timer: 24-bit downcounter

STM32F102x8, STM32F102xB
Figure 22. I
1. Measurement points are done at CMOS levels: 0.3V
Table 39.
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)
SDA
SCL
tolerance on the achieved speed 2%. These variations depend on the accuracy of the external
components used to design the application.
P
= External pull-up resistance, f
t w(SCKH)
S TART
SCL frequency (f
I²C bus
2
C bus AC waveforms and measurement circuit
t h(STA)
(kHz)
f
400
300
200
100
SCL
50
20
t r(SDA)
4 .7 kΩ
t r(SCK)
V DD
t w(SCKL)
Doc ID 15056 Rev 3
SCL
PCLK1
4 .7 kΩ
= I
2
t su(SDA)
C speed,
= 24 MHz, V
V DD
100 Ω
100 Ω
t f(SCK)
DD
t h(SDA)
and 0.7V
DD
= 3.3 V)
STM32F102xx
SDA
SCL
DD
t su(STA)
.
(1)(2)
I2C_CCR value
R
S TOP
S TART REPEATED
(1)
P
Electrical characteristics
0x803C
0x801E
0x00B4
0x8028
0x0168
0x0384
= 4.7 k
t su(STO)
t su(STA:STO)
S TART
ai14979
53/69