st92f124 STMicroelectronics, st92f124 Datasheet - Page 398
st92f124
Manufacturer Part Number
st92f124
Description
8/16-bit Single Voltage Flash Mcu Family With Ram, E3 Tmemulated Eeprom, Can 2.0b And J1850 Blpd
Manufacturer
STMicroelectronics
Datasheet
1.ST92F124.pdf
(426 pages)
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ST92F124/F150/F250 - ELECTRICAL CHARACTERISTICS
I
The following table gives the values to be written in
the I2CCCR and I2CECCR registers to obtain the
required I
Table 70. SCL Frequency Table
Legend:
R
f
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.
398/426
1
2
SCL
C/DDC-BUS TIMING TABLE (Cont’d)
P
= External pull-up resistance
= I
2
(kHz)
C speed
f
400
300
200
100
2
SCL
50
C SCL line frequency.
I2CECCR
0
0
0
0
0
R
P
=3.3k
I2CCCR
86h
89h
90h
36h
72h
f
CPU
=12 MHz
I2CECCR
0
0
0
0
0
R
P
=4.7k
I2CCCR
I2CCCR Value
85h
89h
8Fh
36h
72h
V
DD
= 5 V
I2CECCR
0
0
0
0
0
R
P
=3.3k
I2CCCR
A2h
8Fh
95h
71h
64h
f
CPU
=24 MHz.
I2CECCR
0
0
0
0
1
R
P
=4.7k
I2CCCR
8Eh
94h
A2h
70h
64h
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