CHAPTER 3 HOW TO USE MINICUBE2 WITH V850 MICROCONTROLLER
User’s Manual U18371EJ1V0UM
18
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.
Figure 3-1. Outline of Communication Interface
Target system
Host machine
MINICUBE2
Target device
USB
communication
Serial communication
(UART, CSI-H/S)
Communication circuits
must be mounted on
the target system.
Target system
Host machine
MINICUBE2
Target device
USB
communication
Serial communication
(UART, CSI-H/S)
Communication circuits
must be mounted on
the target system.