R5F21238DFP#U0 Renesas Electronics America, R5F21238DFP#U0 Datasheet - Page 67

• Manufacturer Part Number: R5F21238DFP#U0
• Description: IC R8C/23 MCU FLASH 48-LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/2x/23r

Specifications of R5F21238DFP#U0

• Core Size: 16/32-Bit
• Program Memory Size: 64KB (64K x 8)
• Peripherals: POR, Voltage Detect, WDT
• Core Processor: R8C
• Speed: 20MHz
• Connectivity: CAN, I²C, LIN, SIO, SSU, UART/USART
• Number Of I /o: 41
• Program Memory Type: FLASH
• Ram Size: 3K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-LQFP
• No. Of I/o's: 41
• Ram Memory Size: 3KB
• Cpu Speed: 20MHz
• No. Of Timers: 4
• Digital Ic Case Style: LQFP
• Embedded Interface Type: CAN, I2C, UART
• Rohs Compliant: Yes
• Cpu Family: R8C
• Device Core Size: 16b
• Frequency (max): 20MHz
• Interface Type: I2C/UART
• Total Internal Ram Size: 3KB
• # I/os (max): 41
• Number Of Timers - General Purpose: 5
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 3V
• On-chip Adc: 12-chx10-bit
• Instruction Set Architecture: CISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 48
• Package Type: LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: RCDK8C - KIT DEV EVAL FOR CAN R8C/23R0K521237S000BE - KIT DEV RSK R8C/23R0E521237CPE00 - EMULATOR COMPACT R8C/20/21/22/23
• Eeprom Size: -
• Lead Free Status / Rohs Status: Compliant

R8C/22 Group, R8C/23 Group
Rev.2.00 Aug 20, 2008
REJ09B0251-0200
7.
There are 41 programmable Input/Output ports (I/O ports) P0 to P2, P3_0, P3_1, P3_3 to P3_5, P3_7, P4_3 to P4_5,
and P6. Also, P4_6 and P4_7 can be used as input-only ports if the XIN clock oscillation circuit is not used, and the
P4_2 can be used as an input-only port if the A/D converter is not used.
7.1
Table 7.1
NOTES:
Table 7.2
i = 0 to 4, 6, j = 0 to 7
NOTE:
P0 to P2, P6
P3_0, P3_1, P3_3 to
P3_5, P3_7
P4_3
P4_4, P4_5
P4_2
P4_6, P4_7
Reading
Writing
Operation When
The PDi_j (i = 0 to 4, 6, j = 0 to 7) bit in the PDi register controls I/O of the ports P0 to P2, P3_0, P3_1, P3_3 to
P3_5, P3_7, P4_3 to P4_5, and P6. The Pi register consists of a port latch to hold output data and a circuit to read
pin state.
Figures 7.1 to 7.7 show the Configurations of Programmable I/O Ports. Table 7.2 lists the Functions of
Programmable I/O Ports. Also, Figure 7.9 shows the PDi (i = 0 to 4 and 6) Registers. Figure 7.10 shows the Pi (i =
0 to 4 and 6) Registers, Figure 7.11 shows the Registers PUR0 and PUR1 and Figure 7.12 shows the PMR Register.
Programmable I/O Ports
1. In input mode, whether the internal pull-up resistor is connected or not can be selected by the PUR0
2. When the A/D converter is not used, these ports can be used as the input port only.
3. When the XIN clock oscillation circuit is not used, these ports can be used as the input port only.
1. Nothing is assigned to bits PD3_2, PD3_6, PD4_0 to PD4_2, PD4_6, and PD4_7.
Pi Register
Accessing
(2)
and PUR1 registers.
Functions of Programmable I/O Ports
Ports
(3)
Overview of Programmable I/O Ports
Functions of Programmable I/O Ports
Read pin input level
Write to the port latch
When PDi_j bit is set to 0 (input mode)
Page 45 of 501
I/O
I/O CMOS3 state
I/O CMOS3 state
I/O CMOS3 state
I/O CMOS3 state
I
(No output function)
Type of Output
Value of PDi_j Bit in PDi Register
Set every bit
Set every bit
Set every bit
Set every bit
None
Read the port latch
Write to the port latch. The value written in
the port latch, it is output from the pin.
I/O Setting
When PDi_j bit is set to 1 (output mode)
(1)
Internal Pull-Up Resister
Set every 4 bits
Set every 3 bits
Set every bit
Set every 2 bits
None
7. Programmable I/O Ports
(1)
(1)
(1)
(1)