R5F21238DFP#U0 Renesas Electronics America, R5F21238DFP#U0 Datasheet - Page 94

• 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 10.1
Interrupt request
Power-on reset
Software reset
CM02, CM05, CM06: Bits in CM0 register
CM10, CM13, CM14, CM16, CM17: Bits in CM1 register
OCD0, OCD1, OCD2: Bits in OCD register
FRA00, FRA01: Bits in FRA0 register
CCLK0, CCLK1, CCLK2: Bits in CCLKR register
RESET
CM05
Oscillation stop detection circuit
CM10 = 1 (stop mode)
XIN
XIN clock
instruction
Clock Generation Circuit
WAIT
CM13
CM13
XOUT
Pulse generation
circuit for clock edge
detection and
charge, discharge
control circuit
S Q
R
S Q
R
Page 72 of 501
FRA00
CM14
CM02
Frequency adjustable
XIN clock
Forcible discharge when OCD0 = 0
Charge,
discharge
circuit
a
FRA1 register
Oscillation
stop
detection
High-speed
on-chip
oscillator
Low-speed
on-chip
oscillator
OCD1
b
CM06 = 0
CM17 to CM16 = 00b
System clock
FRA01 = 1
FRA01 = 0
1/2
OCD2 = 1
OCD2 = 0
fOCO-S
Divider
c
FRA2 register
Oscillation stop detection
interrupt generation
circuit detection
CM06 = 0
CM17 to CM16 = 01b
fOCO
1/2
Watchdog
timer interrupt
Voltage watch
2 interrupt
On-chip oscillator
clock
a
OCD2 bit switch signal
CM14 bit switch signal
b
d
CM06 = 0
CM17 to CM16 = 10b
c
Divider
d
fOCO-F
e
1/2
Power-on
reset
Voltage
detection
circuit
k
g
fOCO40M
h
f2
f4
e
f1
f8
f16
f32
Divider
(1/128)
CM06 = 1
INT0
1/2
Timer RA
Oscillation stop
detection,
watchdog timer, voltage
monitor 2 interrupt
Watchdog
fOCO128
k
timer
CM06 = 0
CM17 to CM16 = 11b
Timer RB
Details of divider
1/2
h
CPU clock
Timer RD
10. Clock Generation Circuit
g
Timer RE
converter
A/D
UART0
By CCLK0,
CCLK1, CCLK2
UART1
fCAN0
SSU/IIC