R5F21346CNFP#U0 Renesas Electronics America, R5F21346CNFP#U0 Datasheet - Page 183
![MCU 1KB FLASH 32K ROM 48-LQFP](/photos/28/61/286102/48-lqfp__plqp0048kb-a_sml.jpg)
R5F21346CNFP#U0
Manufacturer Part Number
R5F21346CNFP#U0
Description
MCU 1KB FLASH 32K ROM 48-LQFP
Manufacturer
Renesas Electronics America
Series
R8C/3x/34Cr
Datasheet
1.R5F21346CNFPU0.pdf
(759 pages)
Specifications of R5F21346CNFP#U0
Core Processor
R8C
Core Size
16/32-Bit
Speed
20MHz
Connectivity
I²C, LIN, SIO, SSU, UART/USART
Peripherals
POR, PWM, Voltage Detect, WDT
Number Of I /o
43
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
2.5K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 12x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 85°C
Package / Case
48-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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R8C/34C Group
REJ09B0586-0100 Rev.1.00 Jan 13, 2010
Page 150 of 723
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. Software interrupts are non-maskable.
An undefined instruction interrupt is generated when the UND instruction is executed.
An overflow interrupt is generated when the O flag is set to 1 (arithmetic operation overflow) and the INTO
instruction is executed. Instructions that set the O flag are as follows:
ABS, ADC, ADCF, ADD, CMP, DIV, DIVU, DIVX, NEG, RMPA, SBB, SHA, and SUB.
A BRK interrupt is generated when the BRK instruction is executed.
An INT instruction interrupt is generated when the INT instruction is executed. Software interrupt numbers 0 to
63 can be specified with the INT instruction. Because some software interrupt numbers are assigned to
peripheral function interrupts, the same interrupt routine as for peripheral function interrupts can be executed by
executing the INT instruction.
For software interrupt numbers 0 to 31, the U flag is saved on the stack during instruction execution and the U
flag is set to 0 (ISP selected) before the interrupt sequence is executed. The U flag is restored from the stack
when returning from the interrupt routine. For software interrupt numbers 32 to 63, the U flag does not change
state during instruction execution, and the selected SP is used.
Software Interrupts
Undefined Instruction Interrupt
Overflow Interrupt
BRK Interrupt
INT Instruction Interrupt
11. Interrupts
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