STEVAL-ISQ002V1 STMicroelectronics, STEVAL-ISQ002V1 Datasheet - Page 35

• 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

AN2511
6.2.2
Figure 24. Example of invalid command
Communication timeout
This error appears when the PMBus communication fails due to one of the following
reasons:
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●
●
●
In these conditions, the following error message appears:
Figure 25. Communication timeout message
The slave device doesn’t acknowledge the master
The clock low interval exceeds the value of TTIMEOUT,MIN as defined by (SMBus
Specification 1.1)
TLOW:SEXT and TLOW:MEXT conditions are not met
Bus error or arbitration errors in PMBus communication
Doc ID 13286 Rev 2
Using the demonstration board
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