STM32F105V8 STMicroelectronics, STM32F105V8 Datasheet - Page 64

• Manufacturer Part Number: STM32F105V8
• Description: Mainstream Connectivity line, ARM Cortex-M3 MCU with 64 Kbytes Flash, 72 MHz CPU, CAN, USB 2.0 OTG
• Manufacturer: STMicroelectronics

Specifications of STM32F105V8

• Core: ARM 32-bit Cortex™-M3 CPU
• Conversion Range: 0 to 3.6 V
• Dma: 12-channel DMA controller
• Supported Peripherals: timers, ADCs, DAC, I2Ss, SPIs, I2Cs and USARTs
• Systick Timer: a 24-bit downcounter
• 10/100 Ethernet Mac With Dedicated Dma And Sram (4 Kbytes): IEEE1588 hardware support, MII/RMII available on all packages

Electrical characteristics
64/104
Figure 24. I
1. Measurement points are done at CMOS levels: 0.3V
Table 42.
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)
SCL
Doc ID 15274 Rev 6
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)
STM32F105xx, STM32F107xx
I2C_CCR value
R
Stop
P
Start repeated
0x801E
0x803C
0x00B4
0x8028
0x0168
0x0384
= 4.7 kΩ
t su(STO)
t su(STO:STA)
Start
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