R8A77800ANBGAV Renesas Electronics America, R8A77800ANBGAV Datasheet - Page 366

• Manufacturer Part Number: R8A77800ANBGAV
• Description: IC SUPERH MPU ROMLESS 449-BGA
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7780r

Specifications of R8A77800ANBGAV

• Core Processor: SH-4A
• Core Size: 32-Bit
• Speed: 400MHz
• Connectivity: Audio Codec, MMC, Serial Sound, SCI, SIO, SPI, SSI
• Peripherals: DMA, POR, WDT
• Number Of I /o: 75
• Program Memory Type: ROMless
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.15 V ~ 1.35 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 449-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

Section 10 Interrupt Controller (INTC)
• To clear IRQ edge-detection interrupt requests
Rev.1.00 Dec. 13, 2005 Page 314 of 1286
REJ09B0158-0100
IRQ interrupt requests held in the detection circuit are not cleared even if a 0 is written to the
corresponding bit in INTPRI. The IRQ interrupt sources detected by the INTC (which will be
cleared when they are accepted by the CPU) can be confirmed by reading INTREQ.
When not using holding function (ICR0.LSH = 1), the interrupt request is not held but the
interrupt source is set to the corresponding bit in INTREQ that is to be cleared when the CPU
accepts it.
To clear an IRQ edge-detection interrupt request from the IRQ/IRL[7:0] pins, read the value 1
from the corresponding IRn (n = 0 to 7) bit in INTREQ and then write a 0 to the same bit.
An IRQ interrupt request detected by the INTC is not cleared even if a 1 is written to the
corresponding bit in INTMSK0.