r5f21346mnfp Renesas Electronics Corporation., r5f21346mnfp Datasheet - Page 106

• Manufacturer Part Number: r5f21346mnfp
• Description: Single-chip Mcus Incorporates The R8c Cpu Core
• Manufacturer: Renesas Electronics Corporation.

R8C/34M Group
R01UH0131EJ0100 Rev.1.00
Jun 21, 2011
7.4.2
Notes:
7.4.3
After Reset
1. Bits P3_2 and P3_6 in the P3 register are reserved bits. If it is necessary to set bits P3_2 and P3_6, set to 0.
2. Bits P4_0 and P4_1 in the P4 register are unavailable on this MCU. If it is necessary to set bits P4_0 and P4_1
Pi_j Bit (i = 0 to 4 or 6, j = 0 to 7) (Port Pi_j Bit)
After Reset
Bit
b0
b1
b2
b3
b4
b5
b6
b7
Bit
b0
b1
b2
b3
b4
b5
b6
b7
Address 00E0h(P0), 00E1h(P1), 00E4h(P2), 00E5h(P3
Symbol
Address 0180h
When read, the content is undefined.
set to 0. When read, the content is 0.
Data input and output to and from external devices are accomplished by reading and writing to the Pi register.
The Pi register consists of a port latch to retain output data and a circuit to read the pin status. The value written
in the port latch is output from the pin. Each bit in the Pi 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.
The TRASR register selects which pin is assigned to the timer RA I/O. To use the I/O pin for timer RA, set this
register.
Set the TRASR register before setting the timer RA associated registers. Also, do not change the setting value
in this register during timer RA operation.
Symbol
TRAIOSEL0 TRAIO pin select bit
TRAIOSEL1
Bit
TRAOSEL0 TRAO pin select bit
Symbol
Bit
Symbol
Pi_0
Pi_1
Pi_2
Pi_3
Pi_4
Pi_5
Pi_6
Pi_7
Port Pi Register (Pi) (i = 0 to 4 or 6)
Timer RA Pin Select Register (TRASR)
—
—
—
—
—
Pi_7
b7
X
b7
—
0
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
Reserved bit
Reserved bit
Nothing is assigned. If necessary, set to 0. When read, the content is 0.
Pi_6
b6
X
b6
—
0
Bit Name
Bit Name
Pi_5
b5
X
b5
—
0
Pi_4
b4
X
b4
—
0
Pi_3
0: “L” level
1: “H” level
TRAOSEL0
b3
(1)
X
b1 b0
Set to 0.
Set to 0.
), 00E8h(P4
0 0: TRAIO pin not used
0 1: P1_7 assigned
1 0: P1_5 assigned
1 1: Do not set.
0: P3_7 assigned
1: P3_0 assigned
b3
0
Pi_2
b2
X
(2)
b2
—
0
), 00ECh(P6),
Pi_1
Function
b1
X
Function
TRAIOSEL1 TRAIOSEL0
b1
0
Pi_0
b0
X
b0
0
Page 74 of 740
7. I/O Ports
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
—