R5F21238JFP#U0 Renesas Electronics America, R5F21238JFP#U0 Datasheet - Page 34

• Manufacturer Part Number: R5F21238JFP#U0
• Description: IC R8C/23 MCU FLASH 64K 48LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/2x/23r

Specifications of R5F21238JFP#U0

• Core Processor: R8C
• Core Size: 16/32-Bit
• Speed: 20MHz
• Connectivity: CAN, I²C, LIN, SIO, SSU, UART/USART
• Peripherals: POR, Voltage Detect, WDT
• Number Of I /o: 41
• Program Memory Size: 64KB (64K x 8)
• 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
• For Use With: RCDK8C - KIT DEV EVAL FOR CAN R8C/23R0E521237CPE00 - EMULATOR COMPACT R8C/20/21/22/23
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/22 Group, R8C/23 Group
Rev.2.00 Aug 20, 2008
REJ09B0251-0200
2.8.7
2.8.8
2.8.9
2.8.10
The I flag enables a maskable interrupt.
An interrupt is disabled when the I flag is set to 0, and are enabled when the I flag is set to 1. The I flag is set to
0 when an interrupt request is acknowledged.
ISP is selected when the U flag is set to 0; USP is selected when the U flag is set to 1.
The U flag is set to 0 when a hardware interrupt request is acknowledged or the INT instruction of software
interrupt numbers. 0 to 31 is executed.
IPL, 3 bits wide, assigns processor interrupt priority levels from level 0 to level 7.
If a requested interrupt has greater priority than IPL, the interrupt is enabled.
If necessary, set to 0. When read, the content is undefined.
Interrupt Enable Flag (I)
Stack Pointer Select Flag (U)
Processor Interrupt Priority Level (IPL)
Reserved Bit
Page 12 of 501
2. Central Processing Unit (CPU)