R5F21191SP#U0 Renesas Electronics America, R5F21191SP#U0 Datasheet - Page 17

• Manufacturer Part Number: R5F21191SP#U0
• Description: IC R8C MCU FLASH 8K 20SSOP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/R8C/Tiny/19r

Specifications of R5F21191SP#U0

• Core Processor: R8C
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SIO, UART/USART
• Peripherals: LED, POR, Voltage Detect, WDT
• Number Of I /o: 13
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 384 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 4x1b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 20-SSOP
• For Use With: R0K521134S000BE - KIT EVAL STARTER FOR R8C/13R0E521174CPE10 - EMULATOR COMPACT R8C/18/19/1
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/18 Group, R8C/19 Group
Rev.1.40
REJ03B0124-0140
2.8.7
2.8.8
2.8.9
2.8.10
IPL is 3 bits wide, assigns processor interrupt priority levels from level 0 to level 7.
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.
If a requested interrupt has higher priority than IPL, the interrupt is enabled.
ISP is selected when the U flag is set to 0; USP is selected when the U flag is set to 1.
If necessary, set to 0. When read, the content is undefined.
The I flag enables maskable interrupts.
Interrupts are 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.
Apr 14, 2006
Interrupt Enable Flag (I)
Stack Pointer Select Flag (U)
Processor Interrupt Priority Level (IPL)
Reserved Bit
Page 15 of 38
2. Central Processing Unit (CPU)