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IO Drive Strength configuration for P port, I2C, GPIO, SPI, UART and I2S
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RSKV

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IO Drive Strength configuration for P port, I2C, GPIO, SPI, UART and I2S

Lumpi6 posted on 06 Dec 2012 11:47 PM PST
Top Contributor
183 Forum Posts

Hi,

what is the drive strength in numbers???

 

typedef enum CyU3PDriveStrengthState_t
{
    CY_U3P_DS_QUARTER_STRENGTH = 0,     /* The drive strength is one-fourth the maximum */
    CY_U3P_DS_HALF_STRENGTH,            /* The drive strength is half the maximum */
    CY_U3P_DS_THREE_QUARTER_STRENGTH,   /* The drive strength is three-fourth the maximum */
    CY_U3P_DS_FULL_STRENGTH             /* The drive strength is the maximum */

} CyU3PDriveStrengthState_t;
 

How much mA or µA can a GPIO pin drive when it is configured to 1/4; 1/2; 3/4; 1 ???

thanks,

lumpi




Re: IO Drive Strength configuration for P port, I2C, GPIO, SPI, UART and I2S

RSKV posted on 06 Dec 2012 12:52 AM PST
Cypress Employee
655 Forum Posts

Hi Lumpi,

We are in the process of evaluating the current numbers under different drive strengths.

I will update you soon on this.

Thanks,

sai krishna.



Re: IO Drive Strength configuration for P port, I2C, GPIO, SPI, UART and I2S

Lumpi6 posted on 06 Dec 2012 03:32 AM PST
Top Contributor
183 Forum Posts

Hi,

thanks, I am curious to know...

lumpi



Re: IO Drive Strength configuration for P port, I2C, GPIO, SPI, UART and I2S

AssemblyRequired posted on 11 Jan 2013 09:15 AM PST
Top Contributor
37 Forum Posts

Ping.

I am interested in this also.

Steve 



Re: IO Drive Strength configuration for P port, I2C, GPIO, SPI, UART and I2S

Stas1967 posted on 11 Jan 2013 02:45 PM PST
Member
8 Forum Posts

Hi,

I am interesting to get this information also. I'd like to connect optocoupler to GPIO but I have to know current strength ability to drive it.

Please help

Thank you



Re: IO Drive Strength configuration for P port, I2C, GPIO, SPI, UART and I2S

RSKV posted on 14 Jan 2013 07:33 PM PST
Cypress Employee
655 Forum Posts

Hi Guys,

I will update you today.

Thanks,

sai krishna.



Re: IO Drive Strength configuration for P port, I2C, GPIO, SPI, UART and I2S

RSKV posted on 15 Jan 2013 02:42 AM PST
Cypress Employee
655 Forum Posts

Hi All,

I am attaching xls containing IOH and IOL values under different drive strengths. Please let me know if you have any difficulties in understanding it.

Thanks,

sai krishna.






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