M30245FCGP#U1 Renesas Electronics America, M30245FCGP#U1 Datasheet - Page 52

• Manufacturer Part Number: M30245FCGP#U1
• Description: IC M16C/24 MCU FLSH 128K 100LQFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/20r

Specifications of M30245FCGP#U1

• Core Processor: M16C/60
• Core Size: 16-Bit
• Speed: 16MHz
• Connectivity: I²C, SPI, SSI, UART/USART, USB
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 82
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 10K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 100-LQFP
• Package: 100LQFP
• Family Name: R8C
• Maximum Speed: 16 MHz
• Operating Supply Voltage: 3.3 V
• Data Bus Width: 16 Bit
• Number Of Programmable I/os: 82
• Interface Type: USB/UART/I2C/SPI
• On-chip Adc: 8-chx10-bit
• Number Of Timers: 5
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

M30245 Group
Interrupts
Figure 1.29. Interrupt classification
Rev.2.00
REJ03B0005-0200
Figure 1.29 lists the types of interrupts.
Software Interrupts
• Maskable: An interrupt that can be enabled or disabled by the interrupt enable flag (I flag) or can have its interrupt
priority changed by the priority level.
• Non-maskable: An interrupt that cannot be enabled or disabled by the interrupt enable flag (I flag) or cannot have its
interrupt priority changed by the priority level.
A software interrupt occurs when executing certain instructions. Software interrupts are non-maskable interrupts.
• Undefined instruction interrupt
An undefined instruction interrupt occurs when executing the UND instruction.
• Overflow interrupt
An overflow interrupt occurs when an executing arithmetic instruction overflows. The instructions that set an O flag when
an overflow occurs are: ABS, ADC, ADCF, ADD, CMP, DIV, DIVU, DIVX, NEG, RMPA, SBB, SHA, SUB
• BRK interrupt
A BRK interrupt occurs when executing the BRK instruction.
• INT interrupt
An INT interrupt occurs when specifying one of the software interrupt numbers 0 through 63 and executing the INT
instruction. Software interrupt numbers 0 through 31 are assigned to peripheral I/O interrupts, so executing the INT
instruction executes the same interrupt routine as the peripheral I/O interrupt.
The stack pointer (SP), used for the INT interrupt, is dependent on which software interrupt number is selected.
As far as software interrupt numbers 0 through 31 are concerned, the microcomputer saves the stack pointer assign-
ment flag (U flag) when it accepts an interrupt request. The U flag is set to "0"” selecting the interrupt stack pointer then
the interrupt sequence is executed. When returning from the interrupt routine, the U flag is returned to its previous state
before accepting the interrupt request.
As far as software numbers 32 through 63 are concerned, the stack pointer does not change.
Oct 16, 2006
Note : PeripheralI/Ointerruptsaregeneratedbytheperipheralfunctionsbuiltintothemicrocomputersystem.
page 50 of 264
Interrupt
Software
Hardware
Peripheral I/O (Note)
Special
Undefined instruction (UND instruction)
Overflow (INTO instruction)
BRK instruction
INT instruction
Address match
Reset
NMI
DBC
Watchdog timer
Single step
Interrupts