Renesas M16C/6NN Bedienungsanleitung PDF herunterladen (Seite 14)

E8a Emulator Section 5 Examples of E8a Connections

3. The E8a emulator uses the CNVss pin for MCU control. Pull down the E8a emulator and MCU pins and connect the

E8a emulator.

Figure 5.10 E8a Emulator and CNVss Pin Connection

4. The RESET

pin is used by the E8a emulator. Therefore, use an open-collector output buffer or a CR reset circuit as

the reset circuit for the user system. The recommended pull-up value is 4.7 kΩ or more. The MCU can be reset by

outputting “L” from the E8a emulator. However, if the reset IC output is “H”, the user system reset circuit cannot be

set to “L”. As such, the E8a emulator will not operate normally.

Figure 5.11 Example of a Reset Circuit

5. Connect Vss and Vcc to the Vss and Vcc (Vcc1) of the MCU, respectively.

6. The amount of voltage input to Vcc (Vcc1, Vcc2) must be within the specified range of the MCU.

7. If NMI

interrupts are not used, make sure the NMI pin is pulled up to the Vcc (Vcc1) pin through a resistor.

8. Pin 14 is used for checking the connection between the E8a and the user system, and is not directly connected to the

Vss inside the E8a. Make sure that pins 2, 6, 10, 12 and 14 are all connected to the Vss.

REJ10J1640-0400

Rev.4.00 Page 11 of 31

Apr 30, 2010

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Renesas M16C/6NN Bedienungsanleitung Seite 14