R5F21238DFP#U0 Renesas Electronics America, R5F21238DFP#U0 Datasheet - Page 91

• 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
8.
8.1
Figure 8.1
Figure 8.2
Table 8.1
Single-chip mode
Processor Mode Register 0
Processor Mode Register 1
Single-chip mode can be selected as processor mode.
Table 8.1 lists Features of Processor Mode. Figure 8.1 shows the PM0 Register and Figure 8.2 shows the PM1
Register.
b7 b6 b5 b4 b3 b2
NOTE:
b7 b6 b5 b4 b3 b2
NOTES :
0
Processor Mode
1.
1.
2.
Processor Mode
Processor Modes
Set the PRC1 bit in the PRCR register to 1 (enables w riting) before rew riting to the PM0 register.
Set the PRC1 bit in the PRCR register to 1 (enables w riting) before rew riting to the PM1 register.
The PM12 bit is set to 1 by a program (it remains unchanged even if it is set to 0).
When the CSPRO bit in the CSPR register is set to 1 (selects count source protect mode), the PM12 bit is
automatically set to 1.
0
PM0 Register
PM1 Register
Features of Processor Mode
b1 b0
b1 b0
0 0
0 0
Bit Symbol
Bit Symbol
(b2-b0)
(b7-b4)
(b1-b0)
(b6-b3)
Symbol
Symbol
PM03
PM12
Page 69 of 501
PM0
PM1
(b7)
—
—
—
—
—
(1)
(1)
SFR, internal RAM, internal ROM All pins are I/O ports or peripheral
Reserved bits
Softw are reset bit
Nothing is assigned. If necessary, set to 0.
When read, the content is 0.
Reserved bits
WDT interrupt/reset sw itch bit
Nothing is assigned. If necessary, set to 0.
When read, the content is 0.
Reserved bit
Accessible Areas
Address
Bit Name
Address
Bit Name
0004h
0005h
Set to 0
The MCU is reset w hen this bit is set to 1.
When read, its content is 0.
Set to 0
0 : Watchdog timer interrupt
1 : Watchdog timer reset
Set to 0
function I/O pins
Pins Assignable as I/O Port Pins
After Reset
After Reset
Function
Function
00h
00h
(2)
8. Processor Mode
RW
RW
RW
RW
RW
RW
RW
—
—