R5F21238DFP#U0 Renesas Electronics America, R5F21238DFP#U0 Datasheet - Page 353

• 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 16.30
Figure 16.31
IIC Bus Receive Data Register
IIC Bus Shift Register
Port Mode Register
b7
b7
b7 b6 b5 b4
0 0
b3 b2
0
0
Registers ICDRR and ICDRS
PMR Register
b1
0
b0
b0
b0
0
Store receive data
When the ICDRS register receives 1-byte data, the receive data is transferred to the ICDRR
register and the next receive is enabled.
This register is a register that is used to transmit and receive data.
The transmit data is transferred from the ICDRT to ICDRS registers and data is transmitted
from the SDA pin w hen transmitting.
When 1-byte data is received, data is transferred from the ICDRS to ICDRR registers w hen
receiving.
Bit Symbol
U1PINSEL
Symbol
Symbol
(b3-b0)
(b6-b5)
Symbol
ICDRR
ICDRS
IICSEL
Page 331 of 501
PMR
—
—
Reserved bits
Port TXD1/RXD1 sw itch bit
Reserved bits
SSU/I
2
C bus sw itch bit
Address
Address
Bit Name
00BFh
00F8h
Function
Function
Set to 0
0 : I/O port P6_6, P6_7
1 : TXD1, RXD1
Set to 0
0 : SSU function selects
1 : I
2
C bus function selects
16. Clock Synchronous Serial Interface
After Reset
After Reset
Function
FFh
00h
RW
RW
RO
RW
RW
RW
—
—
—