R5F21238DFP#U0 Renesas Electronics America, R5F21238DFP#U0 Datasheet - Page 90

• 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
7.5
Figure 7.13
Table 7.48
NOTES:
Ports P0 to P2, P3_0,
P3_1, P3_3 to P3_7,
P4_3 to P4_5, P6
Ports P4_6, P4_7
Port P4_2/VREF
RESET
Table 7.48 lists Unassigned Pin Handling.
1. If these ports are set to output mode and left open, they remain input mode until they are switched to
2. Connect these unassigned pins to the MCU using the shortest wire length (2 cm or less) as
3. When power-on reset function is in use.
output mode by a program. The voltage level of these pins may be undefined and the power current
may increase while the ports remain input mode.
The content of the direction registers may change due to noise or program runaway caused by
noise. In order to enhance program reliability, the program should periodically repeat the setting of
the direction registers.
possible.
Unassigned Pin Handling
(3)
Pin Name
Unassigned Pin Handling
Unassigned Pin Handling
Page 68 of 501
NOTE:
• After setting to input mode, connect every pin to VSS via a resistor (pull-
• After setting to output mode, leave these pins open.
Connect to VCC via a resistor (pull-up)
Connect to VCC
Connect to VCC via a resistor (pull-up)
down) or connect every pin to VCC via a resistor (pull-up).
P3_1, P3_3 to P3_7,
1. When power-on reset function is in use.
Port P0 to P2, P3_0,
P4_3 to P4_5, P6
MCU
Port P4_6, P4_7
Port P4_2/VREF
(Output mode)
(Input mode )
(Input mode)
RESET
:
:
(1)
Connection
Open
:
:
(2)
(2)
7. Programmable I/O Ports
(1,2)
(2)