R5F21238DFP#U0 Renesas Electronics America, R5F21238DFP#U0 Datasheet - Page 306
![IC R8C/23 MCU FLASH 48-LQFP](/photos/12/38/123822/r5f21238dfp_u0_sml.jpg)
R5F21238DFP#U0
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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- Download datasheet (6Mb)
R8C/22 Group, R8C/23 Group
Rev.2.00 Aug 20, 2008
REJ09B0251-0200
Figure 15.8
Figure 15.9
15.1.1
15.1.2
Figure 15.8 shows the Transfer Clock Polarity. Use the CKPOL bit in the U0C0 register to select the transfer
clock polarity.
Figure 15.9 shows the Transfer Format. Use the UFORM bit in the U0C0 register to select the transfer format.
Polarity Select Function
LSB First/MSB First Select Function
• When UFORM Bit in U0C0 Register = 0 (LSB first)
• When UFORM Bit in U0C0 Register = 1 (MSB first)
NOTE:
RXD0
RXD0
CLK0
TXD0
CLK0
TXD0
Transfer Clock Polarity
Transfer Format
CLK0
CLK0
• When the CKPOL Bit in the U0C0 Register = 0 (output transmit data at the falling
• When the CKPOL Bit in the U0C0 Register = 1 (output transmit data at the rising
1. The above applies when the CKPOL bit in the U0C0 register is set to 0
RXD0
RXD0
TXD0
TXD0
edge and input the receive data at the rising edge of the transfer clock)
edge and input the receive data at the falling edge of the transfer clock)
NOTES:
1. When not transferring, the CLK0 pin level is “H”.
2. When not transferring, the CLK0 pin level is “L”.
(output transmit data at the falling edge and input receive data at the
rising edge of the transfer clock).
(1)
(2)
Page 284 of 501
D0
D0
D7
D7
D0
D0
D0
D0
D1
D1
D6
D6
D1
D1
D1
D1
D2
D2
D5
D5
D2
D2
D2
D2
D3
D3
D4
D4
D3
D3
D3
D3
D4
D4
D3
D3
(1)
(1)
D4
D4
D4
D4
D5
D5
D2
D2
D5
D5
D5
D5
D6
D6
D1
D1
D6
D6
D6
D6
D7
D7
D0
D0
D7
D7
D7
D7
15. Serial Interface
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