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AN2405 - PSoC® 1 I/O Power Structure - Determining VOH and VOL at Partial Load | Cypress Semiconductor

AN2405 - PSoC® 1 I/O Power Structure - Determining VOH and VOL at Partial Load

Last Updated: 
Aug 24, 2015
Version: 
*C

Most PSoC applications use GPIO connections to drive resistive loads. Worst case logic level outputs at maximum rated current are clearly specified in the target device datasheet. This may be insufficient information when the absolute value of the output level is important to the performance of the user's circuit. Examples include using a PWM as a source to a BPF2 User Module, using a PWM to implement a DAC, or when the loading device has VIL or VIH thresholds that are more restrictive than the specified maximum values for PSoC outputs.

 

Example Project

Supported H/W and S/W Supported PSoC1 Devices
PSoC Designer Version H/W Kit CY8C20xxx CY8C21xxx CY8C22xxx CY8C23xxx CY8C24xxx CY8C27xxx CY8C28xxx CY8C29xxx
No N/A N/A x34 x23, x34, x45     x23A, x94 x43 x x66