R5F21162SP#U0 Renesas Electronics America, R5F21162SP#U0 Datasheet - Page 72

• Manufacturer Part Number: R5F21162SP#U0
• Description: IC R8C MCU FLASH 8K 20SSOP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/R8C/Tiny/16r

Specifications of R5F21162SP#U0

• Core Processor: R8C
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, SIO, UART/USART
• Peripherals: LED, POR, Voltage Detect, WDT
• Number Of I /o: 13
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 20-SSOP
• For Use With: R0K521134S000BE - KIT EVAL STARTER FOR R8C/13
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/16 Group, R8C/17 Group
Rev.2.10
REJ09B0169-0210
11.1.2
11.1.2.1
11.1.2.2
11.1.2.3
11.1.2.4
A software interrupt is generated when an instruction is executed. The software interrupts are non-
maskable interrupts.
The undefined instruction interrupt is generated when the UND instruction is executed.
The overflow interrupt is generated when the O flag is set to “1” (arithmetic operation overflow) and
the INTO instruction is executed. Instructions to set the O flag are :
ABS, ADC, ADCF, ADD, CMP, DIV, DIVU, DIVX, NEG, RMPA, SBB, SHA, SUB
A BRK interrupt is generated when the BRK instruction is executed.
An INT instruction interrupt is generated when the INT instruction is executed. The INT instruction
can select software interrupt numbers 0 to 63. Software interrupt numbers 4 to 31 are assigned to the
peripheral function interrupt. Therefore, the microcomputer executes the same interrupt routine when
the INT instruction is executed as when a peripheral function interrupt is generated. In software
interrupt numbers 0 to 31, the U flag is saved to the stack during instruction execution and set the U
flag to “0” (ISP selected) before executing an interrupt sequence. The U flag is restored from the
stack when returning from the interrupt routine. In software interrupt numbers 32 to 63, the U flag
does not change state during instruction execution, and the selected SP is used.
Jan 19, 2006
Software Interrupts
Undefined Instruction Interrupt
Overflow Interrupt
BRK Interrupt
INT Instruction Interrupt
Page 57 of 254
11. Interrupt