R4F24278NVFQU Renesas Electronics America, R4F24278NVFQU Datasheet - Page 184

• Manufacturer Part Number: R4F24278NVFQU
• Description: MCU 512K/48K 2.7-5.5V 144-LQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2400r

Specifications of R4F24278NVFQU

• Core Processor: H8S/2600
• Core Size: 16/32-Bit
• Speed: 33MHz
• Connectivity: EBI/EMI, I²C, IrDA, SCI, Smart Card, SPI, SSU, UART/USART
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 98
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Eeprom Size: -
• Ram Size: 64K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 16x10b; D/A 2x8b
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 144-LQFP
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Section 6 Interrupt Controller
6.7.5
When the ITSR setting is changed, an edge occurs internally and the IRQnF bit* of ISR may be
set to 1 at the unintended timing if the selected pin level before the change is different from the
selected pin level after the change. If the IRQn* interrupt request is enabled, the interrupt
exception handling is executed. To prevent the unintended interrupt, ITSR setting should be
changed while the IRQn* interrupt request is disabled, then the IRQnF* bit should be cleared to 0.
Note: * n = 15 to 0 for H8S/2427 Group and H8S/2427R Group
6.7.6
Depending on the pin status following a reset, IRQnF* may be set to 1. Therefore, always read
ISR and clear it to 0 after resets.
Note: * n = 15 to 0 for H8S/2427 Group and H8S/2427R Group
Page 154 of 1448
Change of IRQ Pin Select Register (ITSR) Setting
IRQ Status Register (ISR)
n = 7 to 0 for H8S/2425 Group
n = 7 to 0 for H8S/2425 Group
H8S/2427, H8S/2427R, H8S/2425 Group
REJ09B0565-0100 Rev. 1.00
Jul 22, 2010