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STM32G070CB датащи(PDF) 73 Page - STMicroelectronics

номер детали STM32G070CB
подробное описание детали  Arm® Cortex®-M0 32-bit MCU, 128 KB Flash, 36 KB RAM, 4x USART, timers, ADC, comm. I/Fs, 2.0-3.6V
PDF  93 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
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STM32G070CB датащи(HTML) 73 Page - STMicroelectronics

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DS12766 Rev 2
73/93
STM32G070CB/KB/RB
Electrical characteristics
80
5.3.21
Characteristics of communication interfaces
I2C-bus interface characteristics
The I2C-bus interface meets timing requirements of the I2C-bus specification and user
manual rev. 03 for:
Standard-mode (Sm): with a bit rate up to 100 kbit/s
Fast-mode (Fm): with a bit rate up to 400 kbit/s
Fast-mode Plus (Fm+): with a bit rate up to 1 Mbit/s.
The timings are guaranteed by design as long as the I2C peripheral is properly configured
(refer to the reference manual RM0454) and when the I2CCLK frequency is greater than the
minimum shown in the following table.
Table 58. TIMx(1) characteristics
Symbol
Parameter
Conditions
Min
Max
Unit
tres(TIM)
Timer resolution time
-1
-
tTIMxCLK
fTIMxCLK = 64 MHz
15.625
-
ns
fEXT
Timer external clock frequency
on CH1 to CH4
-0
fTIMxCLK/2
MHz
fTIMxCLK = 64 MHz
0
40
ResTIM
Timer resolution
TIMx
-
16
bit
tCOUNTER
16-bit counter clock period
-
1
65536
tTIMxCLK
fTIMxCLK = 64 MHz
0.015625
1024
µs
tMAX_COUNT
Maximum possible count with
32-bit counter
-
-
65536 × 65536
tTIMxCLK
fTIMxCLK = 64 MHz
-
67.10
s
1. TIMx, is used as a general term in which x stands for 1,, 3, 4, 5, 6, 7, 8, 15, 16 or 17.
Table 59. IWDG min/max timeout period at 32 kHz LSI clock(1)
Prescaler divider
PR[2:0] bits
Min timeout RL[11:0]= 0x000
Max timeout RL[11:0]= 0xFFF
Unit
/4
0
0.125
512
ms
/8
1
0.250
1024
/16
2
0.500
2048
/32
3
1.0
4096
/64
4
2.0
8192
/128
5
4.0
16384
/256
6 or 7
8.0
32768
1. The exact timings further depend on the phase of the APB interface clock versus the LSI clock, which causes an
uncertainty of one RC period.



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