r5f21368sdfp Renesas Electronics Corporation., r5f21368sdfp Datasheet - Page 251

• Manufacturer Part Number: r5f21368sdfp
• Description: Renesas Mcu R8c Family / R8c/3xt-a Series
• Manufacturer: Renesas Electronics Corporation.

Under development
R8C/36T-A Group
R01UH0240EJ0001 Rev.0.01
Apr 28, 2011
14.5.24 Port Pi Register (PORTi) (i = 0 to 6, 8)
Notes:
Pi_j Bit (j = 0 to 7) (Port Pi_j bit)
After Reset
1. Nothing is assigned to bits P4_0 and P4_1 in the PORT4 register.
2. Nothing is assigned to the P5_5 bit.
3. Nothing is assigned to the P8_7 bit.
Bit
b0
b1
b2
b3
b4
b5
b6
b7
Address 002E0h (PORT0), 002E1h (PORT1), 002E4h (PORT2), 002E5h (PORT3), 002E8h (PORT4
The write value must be 0 for bits P4_0 and P4_1 in the P4 register. The read value is 0.
The write value must be 0 for the P5_5 bit. The read value is 0.
The write value must be 0 for the P8_7 bit. The read value is 0.
Data input to and output from external devices are accomplished by reading and writing to the PORTi register.
The PORTi register consists of a port latch to retain output data and a circuit to read the pin state. The value
written in the port latch is output from the pin. Each bit in the PORTi register corresponds to one port.
The pin level of any I/O port which is set to input mode can be read by reading the corresponding bit in this
register. The pin level of any I/O port which is set to output mode can be controlled by writing to the
corresponding bit in this register.
Symbol
Symbol
Bit
Pi_0
Pi_1
Pi_2
Pi_3
Pi_4
Pi_5
Pi_6
Pi_7
002E9h (PORT5
Preliminary document
Specifications in this document are tentative and subject to change.
Pi_7
b7
X
Port Pi_0 bit
Port Pi_1 bit
Port Pi_2 bit
Port Pi_3 bit
Port Pi_4 bit
Port Pi_5 bit
Port Pi_6 bit
Port Pi_7 bit
Pi_6
b6
X
(2)
), 002ECh (PORT6), 002F0h (PORT8
Bit Name
Pi_5
b5
X
Pi_4
b4
X
0: Low level
1: High level
Pi_3
b3
X
Pi_2
b2
(3)
X
))
Function
Pi_1
b1
X
Pi_0
b0
X
Page 220 of 725
14. I/O Ports
(1)
),
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W