Renesas RL78/G1P Hardware User Manual page 35

RL78/G1P
Function Name I/O
X1
X2
EXCLK Input
V
DD
V
SS
TOOLRxD Input
TOOLTxD Output
TOOL0 I/O
Caution The relationship between the voltage on P40/TOOL0 and the operating mode after release from the
reset state is as follows.
Table 2-2. Relationship between the Voltage on P40/TOOL0 and Operating Mode
P40/TOOL0
For details, see 23.5 Programming Method.
Remark Use bypass capacitors (about 0.1 μF) as noise and latch up countermeasures with relatively thick wires at
the shortest distance to V
R01UH0895EJ0100 Rev.1.00
Nov 29, 2019

Resonator connection for main system clock

External clock input for main system clock

Positive power supply for all pins

Ground potential for all pins
UART reception pin for the external device connection used during flash memory programming
UART transmission pin for the external device connection used during flash memory programming
Data I/O for flash Memory programmer/debugger
After Release from the Reset State
V Normal operating mode
DD
0 V Flash memory programming mode
to V lines.
DD SS
CHAPTER 2 PIN FUNCTIONS
Function
Operating Mode
(2/2)
16