Renesas HS2378KCI01H Manual de usuario descargar pdf (Pagina 12)

3. RES# of pin 4 of the H-UDI port connector is a signal line in which the emulator

outputs signals to the MCU. RES# of pin 4 and the user system reset circuit must be

connected to the MCU, as shown in figure 1.6. RES# of pin 7 of the H-UDI port

connector is a signal line in which the emulator monitors the RES# signal of the MCU.

The RES# must be pulled up before it is connected to pin 7 of the H-UDI port

connector.

H-UDI port

connector

Pin 4

Pin 7

User

logic

4.7 k

Vcc

4.7 k

MCU

Figure 1.6 Example of Reset Circuits

4. Connect GND of pins 8 to 10 and 12 to 14 of the H-UDI port connector to ground in

the user system.

5. Connect Vcc, pin 11 of the H-UDI port connector, to the power supply (Vcc) in the

user system. The input voltage, Vcc, is within the range of guaranteed operation of

the microcomputer.

6. Figure 1.7 shows the interface circuit in the emulator. Use this figure as a reference

when determining the pull-up resistance value.

Emulator control circuit

22 Ω x 2

22 Ω x 5

4.7 kΩ x 7

H-UDI port

connector

on the user

system

HD74LV125A

HD74LVTH244

Vcc

MCU

Vcc

PG4

P53

RES#

PG5

PG6

WDTOVF#

RES#

Vcc

3.3 V

Figure 1.7 Interface Circuit in the Emulator (Reference)

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 39 40

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Renesas HS2378KCI01H Manual de usuario Pagina 12

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