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1.11
Peripheral Circuits
Additional external circuits can be used with the main board via the external universal board (G04 in 1).
* Power Supply
Power is supplied to external universal board G04 from the main board (G01) or an external source. When
using an external power source, connect the source to power supply input pin TP9 (2). When supplying power
from the main board, connect G04 to the main board through the JP6 POWERGATE (3) (make sure nothing is
connected to JP6 on G01 before connecting the external source to TP9). After making the appropriate
connection, set the power supply switch (S2 in 4) on G04 to ON. LED1 will light up and external power or Vcc
from G01 will be supplied to Vcc pins TP10, TP11, TP12, and TP13.
* System RESET Pin
The main board RESET signal can be used for the external universal board as well. To reset external circuits
in the same manner as 38K0/38K2, use RESET pin TP8 (5).
Figure 1.11(1) External Universal Board G04
16
3. PowerGate
4. Power Switch
RENESAS
USB F
ull-Speed Microcomputers
38K0/38K2
2. Power Input Pin
Group
M3A-8K02
5. RESET Pin
1. External Universal
Board G04
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