R5F21238DFP#U0 Renesas Electronics America, R5F21238DFP#U0 Datasheet - Page 59

• 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 6.3
Internal
reference
voltage
Watchdog timer block
Voltage detection 2 circuit
VCC
VW2C0 to VW2C3, VW2F2, VW2F1, VW2C6, VW2C7: Bits in VW2C register
VCA13: Bit in VCA1 register
VCA27: Bit in VCA2 register
VCA27
+
-
(Filter width: 200ns)
Noise filter
Block Diagram of Voltage Monitor 2 Interrupt/Reset Generation Circuit
Voltage detection 2 signal
is held “H” when VCA27 bit
is set to 0 (disabled)
Watchdog timer underflow
signal
Page 37 of 501
fOCO-S
Voltage
detection
2 signal
VCA13
Voltage monitor 2 interrupt/reset generation circuit
VW2C3
This bit is set to 0 (not detected) by writing
“0” by program.
1/2
1/2
VW2C7
VW2F1 to VW2F0
1/2
VW2C1
= 00b
= 01b
= 10b
= 11b
Digital
filter
VW2C1
VW2C2 bit is set to 0 (not detected) by
writing 0 by program.
When VCA27 bit is set to 0 (voltage
detection 2 circuit disabled), VW2C2
bit is set to 0
VW2C0
VW2C6
VW2C2
6. Voltage Detection Circuit
Watchdog timer
Voltage monitor 2
interrupt signal
Oscillation stop
interrupt signal
interrupt signal
detection
Non-maskable
interrupt signal
Voltage
monitor 2
reset signal