Extension Of Unused Pins; Reset Circuit; Crystal Resonator - Renesas RL78/G1F User Manual

RL78/G1F CPU Card User's Manual
6.7

Extension of Unused Pins

To facilitate general use of the product, the unused pins of the RL78/G1F are extended through universal area through
holes in the board. Table 6.10 lists the pin assignments of the universal area through holes.
Table 6.10 Pin Assignments of Universal Area Through Holes (CN1)
Pin No. RL78/G1F Connection Pins
1 V
DD
3 EV
ss0
5 P43
7 P41
*1
9 P60
*1
11 P62
13 P31
15 P74
17 P72
19 P70
21 P147
23 EV
DD0
25 EV
SS0
Note 1. P60 to P62 is separated from through-holes by unmounted 0 ohm resisters as a factory default.
6.8

Reset Circuit

The product is equipped with a reset circuit for resetting the MCU at power-on reset and external reset. To apply an
external reset to the MCU, press the pushbutton (RESET1).
6.9

Crystal Resonator

A crystal oscillator (Y1) is not mounted on this product board as a factory default.
Considering treatment of unused pin, registers (R56, R57) are mounted instead of crystal load condensers (C10, C11).
If you use a crystal oscillator (Y1), connect a crystal oscillator (1-20MHz) to X2/X1 pin of MCU on the board.
HC-49/US SMD type is need when mounting.
Depending on the wiring and X2/X1 pin of MCU capacitance, mount an appropriate load condensers as C10 and C11
instead of R56 and R57.
R12UZ0014EJ0100 Rev.1.00
Apr. 5, 2017
Pin No. RL78/G1F Connection Pins
2 V
DD
4 EV
SS0
6 P42
8 NC
*1
10 P61
12 P63
14 P75
16 P73
18 P71
20 P30
22 P130
24 EV
DD0
26 EV
SS0
User's Manual
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