Technical information

Renesas E10A-USB Emulator
Introductory Guide for SH/Tiny (SH7125)
6.1.3 Setting MCU Board Switches
(1) Setting the Power-Selection Switch
Set switch SW1 to the [EXTERNAL] label side (in the direction of the red arrow in figure 6.2).
Be sure to connect the power cable to the MCU board and supply 5-VDC power from the external power source
unit.
Figure 6.2 Power-Selection Switch (SW1) on the MCU Board
REJ06J0007-0100/Rev.1.00 February 2007 Page 20 of 43
(2) Setting the User-System Input Signal Enabling/Disabling Switches
Set the switch marked as [UCON] (no.3) of switch SW2 to [DISABLE] as shown in figure 6.3. This enables single-
unit operation of the MCU board. The other switches can be left in their initial state set at shipment ([ENABLE]).
Figure 6.3 User-System Input Signal Enabling/Disabling Switches (SW2)
(3) Setting the Clock-Selection Jumper
Put a jumper on the [XTAL] label side of jumper pin SW3 (close pins 1 and 2) as indicated by a red rectangle in
figure 6.4. Install a crystal resonator with an oscillating frequency of 10 MHz to 12.5 MHz on the MCU board. This
guide describes an example where a 12-MHz resonator is used.
Figure 6.4 Clock-Selection Jumper (SW3) on the MCU Board