Download RIDE-ST7

RIDE-ST7
Building an ICC-compliant application board
The application should include a pull-down resistor not lower than 10KΩ.
8.1.4 ICCOSC pin
This pin is used for the RLink to provide an external clock to the target microcontroller.
The ICCOSC pin of the ICC connector must be connected to the ST7’s OSC1 or OSCIN pin if
the clock is not provided by the application, or if the application clock source is not programmed
in the option byte. This connection allows you start communication with your ST7 for in-circuit
debugging and/or programming using the "Ignore Option Bytes" option. When doing so, your
RLink provides a clock source to initiate communication with the ST7.
The RLink provides a clock source at a frequency of 12MHz.
For ST7 devices with multi-oscillator capability, when the ICCOSC pin is connected, the OSC2
pin should be grounded.
8.1.5 VDD_APPLI pin
This pin is used by tools with a power supply follower, such as RLink. This connection is needed
by the power supply follower to detect the supply voltage and power the RLink'
s I/Os
accordingly.
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