R5F21324CNSP#U0 Renesas Electronics America, R5F21324CNSP#U0 Datasheet - Page 95

• Manufacturer Part Number: R5F21324CNSP#U0
• Description: MCU 1KB FLASH 16K ROM 20-LSSOP
• Manufacturer: Renesas Electronics America
• Series: R8C/3x/32Cr

Specifications of R5F21324CNSP#U0

• Core Processor: R8C
• Core Size: 16/32-Bit
• Speed: 20MHz
• Connectivity: I²C, LIN, SIO, SSU, UART/USART
• Peripherals: POR, PWM, Voltage Detect, WDT
• Number Of I /o: 15
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 20-LSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/32C Group
REJ09B0573-0100 Rev.1.00 Dec. 18, 2009
Page 66 of 573
7.4.2
Notes:
After Reset
1. Bits P3_0 to P3_2 and P3_6 in the P3 register are reserved bits. If it is necessary to set bits P3_0 to P3_2 and
2. Bits P4_0 to P4_1 in the P4 register are unavailable on this MCU. If it is necessary to set bits P4_0 to P4_1 set to
Pi_j Bit (i = 1, 3, 4, j = 0 to 7) (Port Pi_j Bit)
Bit
b0
b1
b2
b3
b4
b5
b6
b7
Address 00E1h(P1), 00E5h(P3
Symbol
P3_6, set to 0. When read, the content is 0.
0. When read, the content is 0. Bits P4_3, P4_4 are reserved bits. If it is necessary to set bits P4_3 and P4_4, 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.
Bit
Symbol
Pi_0
Pi_1
Pi_2
Pi_3
Pi_4
Pi_5
Pi_6
Pi_7
Port Pi Register (Pi) (i = 1, 3, 4)
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
Bit Name
(1)
Pi_5
), 00E8h(P4
b5
X
Pi_4
b4
X
(2)
)
Pi_3
0: “L” level
1: “H” level
b3
X
Pi_2
b2
X
Pi_1
Function
b1
X
Pi_0
b0
X
7. I/O Ports
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W