R5F21238DFP#U0 Renesas Electronics America, R5F21238DFP#U0 Datasheet - Page 464

• 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
Figure 20.18
Figure 20.19
20.5.1.1
Figure 20.18 shows an example of Pin Processing in Standard Serial I/O Mode 2 and Figure 20.19 shows an
example of Pin Processing in Standard Serial I/O Mode 3. Since the controlled pins vary depending on the
programmer, refer to the manual of your serial programmer.
Example of Circuit Application in the Standard Serial I/O Mode
Pin Processing in Standard Serial I/O Mode 2
Pin Processing in Standard Serial I/O Mode 3
NOTES:
Data output
Data input
NOTES:
MODE I/O
Reset input
Page 442 of 501
1. In this example, modes are switched between single-chip mode and
2. Connecting the oscillation is necessary. Set the main clock frequency 1
1.
2. In this example, modes are switched between single-chip mode and
3. When operating with on-chip oscillator clock, connecting the oscillating
standard serial I/O mode by controlling the MODE input with a switch.
MHz to 20 MHz. Refer to Appendix Figure 2.1 Connection Example
with M16C Flash Starter (M3A-0806).
Controlled pins and external circuits vary depending on the
programmer. Refer to the programmer manual for details.
standard serial I/O mode by connecting a programmer.
circuit is not necessary.
User reset signal
TXD
RXD
MODE
RESET
MCU
MCU
MODE
20. Flash Memory