Renesas RA Family RA4 Quick Design Guide
R01AN5988EU0100 Rev.1.00 Page 9 of 51
Jul.21.21
2.4 Serial Programming Interface using SCI: Devices with Arm
®
TrustZone
®
Support
The following diagram shows the typical connectivity of the serial programming interface using SCI for
devices that include TrustZone support. Note the additional connection of P201/MD, which enables the
programming of the Arm TrustZone IDAU boundary register settings.
Figure 4. Serial Programming Interface using SCI: Devices with TrustZone Support Connections
Notes: 1. The output of the reset circuit of the user system must be open collector.
2. P201/MD must be connected to the Arm-standard JTAG connector pin 4 to support programing
the Arm TrustZone IDAU boundary register settings.
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