NEC IE-V850E1-CD-NW, Руководство пользователя

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CHAPTER 3 NOTES ON TARGET SYSTEM DESIGN
User’s Manual U16647EJ1V0UM
23
3.1 Connection Circuit Example
The following shows a connection circuit example of the target system required when connecting the IE-V850E1-
CD-NW. For details, refer to the user’s manual of the target device.
Figure 3-1. Connection Circuit Example
V
DD
V
DD
Target device
IE connector
(IE-V850E1-CD-NW side)
DCK
V
DD
DMS
DDI
DDO
DRST
FLMD0
RESET
DCK
DMS
DDI
DDO
DRST
FLMD0
RESET
V
DD
GND
Cautions 1. Keep the pattern length as short as possible. (Do not exceed 100 mm.)
2. V
DD
of the IE connector is used for detecting whether the target board is powered on.
3. The DCK, DMS, DDI, DDO, and DRST pins may function alternately as general-purpose
ports. Therefore handle these pins in accordance with the specifications of each target
device.
4. Make sure that the signals driven from the IE-V850E1-CD-NW and the signals generated
on the target system do not conflict.
5. FLMD0 is connected only when the target device incorporates flash memory.
6. RESET may be required when both of the following conditions are satisfied.
••••
DRST of the target device has an alternate function
••••
The IE-V850E1-CD-NW is connected to a target system that only uses the POC reset
function, without using the RESET pin function
7. Supply the on-chip debug power supply for V
DD
.