This application note provides an overview of the hardware implementation of the STR75x development board features, such as the power supply, clock management, reset control, boot mode settings, and debug management. It shows how to use the STR75x product family and describes the minimum hardware resources required to develop an STR75x application. Detailed reference design schematics are also contained in this document with descriptions of the main components, interfaces, and modes.
This application note is intended for system designers requiring a hardware implementation overview of the STR75x product family. It describes the minimum hardware resources required for development, covering power supply, clock management, reset control, boot mode settings, and debug management. The document details four specific power supply schemes and provides specifications for power startup and external reset circuits.
| Digital Power Supply Voltage | 1.8V + 0.15V |
|---|---|
| I/O Power Supply Voltage | 3.3V +0.3V or 5V +0.5V |
| Reset Pulse Duration | 20us |
| Power Startup Rise Time | 20us/V to 20ms/V |
The internal circuitry guarantees a minimum reset pulse duration of 20us.
No, when powered by 5.0V, the USB peripheral cannot operate.
No, STANDBY Mode is not available in Power Scheme 4.