STEVAL-ISQ002V1 STMicroelectronics, STEVAL-ISQ002V1 Datasheet - Page 156
![BOARD EVAL BASED ON ST72264G1](/photos/9/9/90917/steval-isq002v1_sml.jpg)
STEVAL-ISQ002V1
Manufacturer Part Number
STEVAL-ISQ002V1
Description
BOARD EVAL BASED ON ST72264G1
Manufacturer
STMicroelectronics
Specifications of STEVAL-ISQ002V1
Main Purpose
Interface, PMBus
Embedded
Yes, MCU, 8-Bit
Utilized Ic / Part
ST72F264
Primary Attributes
The PMBus™ Interface Using the ST7 I2C Peripheral
Secondary Attributes
Firmware in C Language
Product
Power Management Modules
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-6423
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
STEVAL-ISQ002V1
Manufacturer:
STMicroelectronics
Quantity:
1
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ST72260Gx, ST72262Gx, ST72264Gx
COMMUNICATION INTERFACE CHARACTERISTICS (Cont’d)
The following table gives the values to be written in
the I2CCCR register to obtain the required I
SCL line frequency.
Table 26. 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.
156/172
SCL
P
= External pull-up resistance
(kHz)
f
400
300
200
100
= I
SCL
50
20
2
C speed
R
P
=3.3kΩ
5Fh
83h
10h
24h
NA
NA
V
DD
= 3.3 V
R
P
=4.7kΩ
5Fh
84h
10h
24h
NA
NA
f
CPU
=4 MHz.
R
P
=3.3kΩ
83h
10h
24h
5Fh
NA
NA
V
DD
= 5 V
2
C
R
P
=4.7kΩ
5Fh
84h
10h
24h
NA
NA
I2CCCR Value
R
P
=3.3kΩ
8Ah
4Ch
FFh
83h
85h
24h
V
DD
= 3.3 V
R
P
=4.7kΩ
4Ch
85h
89h
23h
FFh
NA
f
CPU
=8 MHz.
R
P
=3.3kΩ
8Ah
4Ch
FFh
83h
85h
24h
V
DD
= 5 V
R
P
=4.7kΩ
4Ch
83h
85h
8Ah
23h
FFh
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