Target System Design - Renesas QB-MINI2 User Manual

CHAPTER
3.1

Target System Design

This section describes the target system circuit design required for on-chip debugging and flash programming.
Figure 3-1 presents an overview of the MINICUBE2 communication interface. As shown on the left side of
the figure, MINICUBE2 performs serial communication with the target device on the target system. For this
communication, communication circuits must be mounted on the target system. Refer to this section to design
circuits appropriately.
UART and CSI-H/S are supported as communication modes. Note that CSI-H/S is not available if there is no
H/S pin connection. The H/S pin is the name of the pin for the programmer and this pin might not be described as
an alternate-function pin in the user's manual of the device. In such a case, connect the relevant port that is
assigned to the H/S pin. (In the V850ES/JJ, for example, the PCM0 pin is assigned to the H/S pin.)
The pins used for serial communication are basically the same as those of the flash memory programmer
(such as PG-FP4), but some devices do not support some of them. Refer to the document "QB-MINI2 Operating
Precautions" and check the supported pins.
Target device Target device
Target system Target system
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3 HOW TO USE MINICUBE2 WITH V850 MICROCONTROLLER
Figure 3-1. Outline of Communication Interface
Communication circuits Communication circuits
must be mounted on must be mounted on
the target system. the target system.
Serial communication Serial communication
(UART, CSI-H/S) (UART, CSI-H/S)
MINICUBE2 MINICUBE2
User's Manual
USB USB
communication communication
U18371EJ5V0UM
Host machine Host machine