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STM8AL3146 Datasheet(PDF) 92 Page - STMicroelectronics

Part # STM8AL3146
Description  Automotive 8-bit ultra-low-power MCU, up to 32 Kbyte Flash, RTC, data EEPROM, LCD, timers, USART, I2C, SPI, ADC, DAC, COMPs
PDF  124 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM8AL3146 Datasheet(HTML) 92 Page - STMicroelectronics

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Electrical parameters
STM8AL313x/4x/6x STM8AL3L4x/6x
92/124
DocID18474 Rev 7
I2C - Inter IC control interface
Subject to general operating conditions for VDD, fSYSCLK, and TA unless otherwise specified.
The STM8AL I2C interface (I2C1) meets the requirements of the Standard I2C
communication protocol described in the following table with the restriction mentioned
below:
Refer to I/O port characteristics for more details on the input/output alternate function
characteristics (SDA and SCL).
Note:
For speeds around 200 kHz, the achieved speed can have a
± 5% tolerance
For other speed ranges, the achieved speed can have a
± 2% tolerance
The above variations depend on the accuracy of the external components used.
Table 47. I2C characteristics
Symbol
Parameter
Standard mode
I2C
Fast mode I2C(1)
1. fSYSCLK must be at least equal to 8 MHz to achieve max fast I2C speed (400 kHz).
Unit
Min(2)
2. Data based on standard I2C protocol requirements, not tested in production.
Max (2)
Min (2)
Max (2)
tw(SCLL)
SCL clock low time
4.7
-
1.3
-
μs
tw(SCLH)
SCL clock high time
4.0
-
0.6
-
tsu(SDA)
SDA setup time
250
-
100
-
ns
th(SDA)
SDA data hold time
0
-
0
900
tr(SDA)
tr(SCL)
SDA and SCL rise time
-
1000
-
300
tf(SDA)
tf(SCL)
SDA and SCL fall time
-
300
-
300
th(STA)
START condition hold time
4.0
0.6
-
μs
tsu(STA)
Repeated START condition setup
time
4.7
-
0.6
-
tsu(STO)
STOP condition setup time
4.0
-
0.6
-
tw(STO:STA)
STOP to START condition time (bus
free)
4.7
-
1.3
-
Cb
Capacitive load for each bus line
-
400
-
400
pF



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