Renesas M34551T2-MCU 4.3 Description of Switches

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Connects the VDD of the M34551T2-MCU to

the VDD of the target system.

Sets the MCU’s ROM size.

• M4, set SW2 to "4".

• E8, set SW2 to "8".

Operates the target MCU at +5 V.

Operates the target MCU at +3 V.

SW1

SW2

SW3

OFF

5 V

3 V

OFF

5 V

4.3 Description of Switches

Does not connect the VDD of the M34551T2-

MCU to the VDD of the target system.

Label Switch position Description Factory-setting

ROMSIZE

OFFON

5 V

3 V

5 V

3 V

Contents

Main ( 2 / 40 ) Contents Page 1. Precautions for Safety WARNING IMPORTANT CAUTION WARNING CAUTION IMPORTANT Notes on Differences between Actual MCU and Emulator: Note on the Target System: Notes on Connecting the Target System: Page 2. Handling Precautions Page 3. Contents of the M34551T2-MCU Package 3.1 Things to Check When Unpacking 3.2 Other Necessary Products Page Page 4.2 Specifications Table 4.1 lists specifications of the M34551T2-MCU. Table 4.1 M34551T2-MCU Specifications 4.3 Description of Switches Figure 4.2 Positions of switches Table 4.2 Functions of switches (1/2) Table 4.3 Functions of the switches (2/2) 4.4 Description of Connectors Figure 4.4 Connector J3 pin layout Page Page 4.5 Connection to the Target System Figure 4.8 Pin layout of the 50-wire normal-pitch cable Table 4.8 50-wire normal-pitch cable pin assignments 4.6 LED Page 5. Using as an Evaluation Board 5.1 System Configuration 5.2 Mounting the EPROM Page 5.4 Switch Settings 5.5 Connection to the Target System 5.6 Connection to the External Power Source 5.7 Turning the Power On Page 6. Precautions to Be Taken When Debugging 6.1 Reset 6.2 System Clock 6.3 Real-time Capability of Timer 6.4 Watchdog Timer 6.5 Pullup Transistors 6.6 Port I/O Timing 6.7 Characteristics of I/O Ports 6.8 Power-down Mode 6.9 Program Execution (G, GB) Program example 6.5 Program example 6.6 6.10 External Trigger Page Page Appendix A. How to Request for Repair CAUTION Note on Transporting the Product: