
RL78/G13
CHAPTER 4 PORT FUNCTIONS
R01UH0146EJ0100 Rev.1.00
164
Sep 22, 2011
CHAPTER 4 PORT FUNCTIONS
4.1 Port Functions
Pin I/O buffer power supplies depend on the product. The relationship between these power supplies and the pins is
shown below.
Table 4-1. Pin I/O Buffer Power Supplies
(1) 20-pin, 24-pin, 25-pin, 30-pin, 32-pin, 36-pin, 40-pin, 44-pin, 48-pin, 52-pin products
Power Supply
Corresponding Pins
VDD
All pins
(2) 64-pin products
Power Supply
Corresponding Pins
EVDD0
Port pins other than P20 to P27, P121 to P124, and P137
VDD
P20 to P27, P121 to P124, and P137
Pins other than port pins
(3) 80-pin products
Power Supply
Corresponding Pins
EVDD0
Port pins other than P20 to P27, P121 to P124, P137, and P150 to P153
VDD
P20 to P27, P121 to P124, P137, and P150 to P153
Pins other than port pins
(4) 100-pin products
Power Supply
Corresponding Pins
EVDD0, EVDD1
Port pins other than P20 to P27, P121 to P124, P137, and P150 to P156
VDD
P20 to P27, P121 to P124, P137, and P150 to P156
Pins other than port pins
(5) 128-pin products
Power Supply
Corresponding Pins
EVDD0, EVDD1
Port pins other than P20 to P27, P121 to P124, P137, and P150 to P156
VDD
P20 to P27, P121 to P124, P137, and P150 to P156
Pins other than port pins
The RL78/G13 microcontrollers are provided with digital I/O ports, which enable variety of control operations.
In addition to the function as digital I/O ports, these ports have several alternate functions. For details of the alternate
functions, see CHAPTER 2 PIN FUNCTIONS.