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ST7LITE49M Scheda tecnica(PDF) 153 Page - STMicroelectronics

Il numero della parte ST7LITE49M
Spiegazioni elettronici  8-bit MCU with single voltage Flash memory data EEPROM, ADC, 8/12-bit timers, and I²C interface
PDF  188 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST7LITE49M Scheda tecnica(HTML) 153 Page - STMicroelectronics

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Electrical characteristics
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13.5
Communication interface characteristics
13.5.1
I2C interface
Subject to general operating conditions for VDD, fOSC, and TA unless otherwise specified.
Refer to I/O port characteristics for more details on the input/output alternate function
characteristics (SDAI and SCLI). The ST7 I2C interface meets the electrical and timing
requirements of the Standard I2C communication protocol.
TA = -40°C to 125 °C, unless otherwise specified.
Table 77 gives the values to be written in the I2CCCR register to obtain the required I2C
SCL line frequency.
Table 76.
I2C interface characteristics
Symbol
Parameter
Conditions
Min
Max
Unit
fSCL
(1)
1.
The I2C interface will not function below the minimum clock speed of 4 MHz (see Table 77).
I²C SCL frequency
fCPU=4 MHz to 8 MHz,
VDD= 2.4 to 5.5 V
400
kHz
Table 77.
SCL frequency (multimaster I2C interface)(1)(2)(3)
fSCL
I2CCCR Value
fCPU = 4 MHz
fCPU = 8 MHz
VDD = 3.3 V
VDD = 5 V
VDD = 3.3 V
VDD = 5 V
RP=3.3kΩ
RP=4.7kΩ
RP=3.3kΩ
RP=4.7kΩ
RP=3.3kΩ
RP=4.7kΩ
RP=3.3kΩ
RP=4.7kΩ
400
NA
NA
NA
NA
84h
83h
84h
84h
300
NA
NA
NA
NA
86h
86h
86h
86h
200
84h
84h
84h
84h
8Ah
8Ah
8Ah
8Ah
100
11h
11h
11h
11h
25h
24h
25h
24h
50
25h
25h
25h
25h
4Ch
4Ch
4Dh
4Ch
20
61h
61h
61h
62h
FFh
FFh
FFh
FFh
1.
RP = External pull-up resistance, fSCL = I
2C speed, NA = Not achievable, TBD = To be determined.
2.
For fast mode speeds, achieved speed can have
±5% tolerance. For other speed ranges, achieved speed can have ±2%
tolerance.
3.
The above variations depend on the accuracy of the external components used.



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