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ST92F124 データシート(PDF) 399 Page - STMicroelectronics

部品番号 ST92F124
部品情報  8/16-BIT SINGLE VOLTAGE FLASH MCU FAMILY WITH RAM, E3 TM(EMULATED EEPROM), CAN 2.0B AND J1850 BLPD
PDF  429 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST92F124 データシート(HTML) 399 Page - STMicroelectronics

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ST92F124/F150/F250 - ELECTRICAL CHARACTERISTICS
I2C/DDC-BUS TIMING TABLE (Cont’d)
The following table gives the values to be written in
the I2CCCR and I2CECCR registers to obtain the
required I2C SCL line frequency.
Table 70. SCL Frequency Table
Legend:
RP = External pull-up resistance
fSCL = I
2C speed
NA = Not achievable
Note:
– For speeds around 200 kHz, achieved speed can have
±5% tolerance
– For other speed ranges, achieved speed can have
±2% tolerance
The above variations depend on the accuracy of the external components used.
fSCL
(kHz)
I2CCCR Value
fCPU=12 MHz
fCPU=24 MHz.
VDD = 5 V
RP=3.3kΩ
RP=4.7kΩ
RP=3.3kΩ
RP=4.7kΩ
I2CECCR
I2CCCR
I2CECCR
I2CCCR
I2CECCR
I2CCCR
I2CECCR
I2CCCR
400
0
86h
0
85h
0
8Fh
0
8Eh
300
0
89h
0
89h
0
95h
0
94h
200
0
90h
0
8Fh
0
A2h
0
A2h
100
0
36h
0
36h
0
71h
0
70h
50
0
72h
0
72h
0
64h
1
64h
1



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