R5F21238DFP#U0 Renesas Electronics America, R5F21238DFP#U0 Datasheet - Page 503

• 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 22.7
22.3.3.8
The count source fOCO40M can be used with supply voltage VCC = 3.0 to 5.5 V. For supply voltage other than
that, do not set bits TCK2 to TCK0 in registers TRDCR0 and TRDCR to 110b (select fOCO40M as the count
source).
When the value in the buffer register is set to 0000h:
Transfer by the compare match in the TRD0 and TRDGRA0 registers.
And then, when setting the buffer register to 0001h or above and the smaller value than the one in the
TRDGRA0 register, and the compare match in the TRD0 and TRDGRA0 registers in the fist time after
setting, the value is transferred to the general register. After that, transfer the value with the timing selected
by the CMD1 to CMD0 bits.
TRDGRD0 register
TRDGRB0 register
TRDIOD0 output
TRDIOB0 output
The above applies to the following conditions:
• The CMD1 to CMD0 bits in the TRDFCR register are set to 10b.
• Both the OLS0 and OLS1 bits in the TRDFCR register are set to “1” (active “H” for normal-phase and counter-phase).
(Data in the buffer register is transferred at the underflow in the TRD1 register in PWM mode.)
Operation When Value in Buffer Register Is Set to 0000h in Complementary PWM
Mode
Count Source fOCO40M
m + 1
0000h
n 2
n1
Page 481 of 501
Transfer with timing
set by CMD1 to
CMD0 bits
n2
Transfer
n1
n1
Transfer
0000h
Transfer by
compare match in
TRD0 and
TRDGRA0 registers
because content in
TRDGRD0 register
is set to 0000h.
0000h
m: Setting Value in TRDGRA0 Register
Transfer by
compare match in
TRD0 and
TRDGRA0
registers because
of first setting to
0001h ≤ n1 < m
n1
Transfer
n1
Count value in TRD0 register
Transfer with timing
set by CMD1 to
CMD0 bits
Transfer
Count value in TRD1 register
22. Usage Notes