R5F21238DFP#U0 Renesas Electronics America, R5F21238DFP#U0 Datasheet - Page 392
![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
18. CAN Module
The CAN (Controller Area Network) module for the R8C/22 Group, R8C/23 Group of MCUs is a communication
controller implementing the CAN 2.0B protocol. The R8C/22 Group, R8C/23 Group contains one Full CAN module
which can transmit and receive messages in both standard (11-bit) ID and extended (29-bit) ID formats.
Figure 18.1 shows a Block Diagram of CAN Module.
External CAN bus driver and receiver are required.
Figure 18.1
CTx/CRx
Protocol controller
Message box
Acceptance filter
16 bit timer
Wake up function
Interrupt generation function: The interrupt events are provided by the CAN module. CAN0 successful reception
CTx
CRx
j = 0 to 15
C0CONR register
C0RECR register
C0TECR register
Wakeup
Protocol controller
logic
Block Diagram of CAN Module
Page 370 of 501
C0STR register
C0CTLR register
: CAN I/O pins.
: This controller handles the bus arbitration and the CAN protocol services, i.e. bit
: This memory block consists of 16 slots that can be configured either as transmitter or
: This block performs filtering operation for received messages. For the filtering
: Used for the time stamp function. When the received message is stored in the message
: CAN0 wake up interrupt is generated by a message from the CAN bus.
timing, stuffing, error status etc.
receiver. Each slot contains an individual ID, data length code, a data field (8 bytes)
and a time stamp.
operation, the C0GMR register, the C0LMAR register, or the C0LMBR register is
used.
memory, the timer value is stored as a time stamp.
interrupt, CAN0 successful transmission interrupt, CAN0 error interrupt, and CAN0
wake up interrupt.
C0SSTR register
C0MCTLj register
Acceptance filter
Data bus
Data Bus
slot 0 to 15
16 bit timer
C0ICR register
C0LMAR register
C0LMBR register
C0GMR register
control logic
Interrupt
C0IDR register
CAN0 error interrupt
CAN0 wakeup interrupt
CAN0 reception
successful interrupt
CAN0 transmission
successful interrupt
Message data
Message box
Message ID
slot 0 to 15
time stamp
DLC
18. CAN Module
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