R5F21238DFP#U0 Renesas Electronics America, R5F21238DFP#U0 Datasheet - Page 50

• 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
5.
There are resets: hardware reset, power-on reset, voltage monitor 1 reset, voltage monitor 2 reset, watchdog timer
reset, and software reset.
Table 5.1 lists the Reset Names and Sources.
Figure 5.1
Table 5.1
NOTE:
Hardware reset
Power-on reset
Voltage monitor 1 reset
Voltage monitor 2 reset
Watchdog timer reset
Software reset
Resets
1. Because this product is under development, specifications may be changed.
RESET
VCC
Reset Name
Reset Names and Sources
Block Diagram of Reset Circuit
(1)
Page 28 of 501
(1)
(1)
Power-on reset
Watchdog
detection
Voltage
circuit
circuit
timer
CPU
Input voltage of RESET pin is held “L”
VCC rises
VCC falls (monitor voltage: Vdet1)
VCC falls (monitor voltage: Vdet2)
Underflow of watchdog timer
Write 1 to PM03 bit in PM0 register
Hardware reset
Power-on reset
Voltage monitor
1 reset
Voltage monitor
2 reset
Watchdog timer
reset
Software reset
VCA13: Bit in VCA1 register
VCA26, VCA27: Bits in VCA2 register
VW1C0, VW1C1, VW1F0, VW1F1, VW1C6, VW1C7: Bits in VW1C register
VW2C2, VW2C3 bits: Bits in VW2C register
Source
SFR
SFR
Pin, CPU and
SFR bits other than
those listed above
VCA26,
VW1C0 and
VW1C6 bits
VCA13, VCA27,
VW1C1,
VW1F0, VW1F1, VW1C7,
VW2C2 and VW2C3 bits
5. Resets