H8S2245 datasheet(152/818 Pages) RENESAS

No. de pieza	H8S2245

Descripción Electrónicos	Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series

PDF	818 Pages

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Fabricante Electrónico	RENESAS [Renesas Technology Corp]

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Section 5 Interrupt Controller

Rev.3.00 Mar. 26, 2007 Page 110 of 772

REJ09B0355-0300

Bits 7 to 0—IRQ7 to IRQ0 flags (IRQ7F to IRQ0F): These bits indicate the status of IRQ7 to

IRQ0 interrupt requests.

Bit n

IRQnF

Description

[Clearing conditions]

(Initial value)

• Cleared by reading IRQnF flag when IRQnF = 1, then writing 0 to IRQnF flag

• When IRQn interrupt exception handling is executed when low-level detection is set

(IRQnSCB = IRQnSCA = 0) and

IRQn input is high

• When IRQn interrupt exception handling is executed when falling, rising, or both-edge

detection is set (IRQnSCB = 1 or IRQnSCA = 1)

• When DTC is activated by IRQn interrupt while DISEL bit of MRB in DTC is 0.

[Setting conditions]

• When IRQn input goes low when low-level detection is set (IRQnSCB = IRQnSCA =

• When a falling edge occurs in IRQn input when falling edge detection is set

(IRQnSCB = 0, IRQnSCA = 1)

• When a rising edge occurs in IRQn input when rising edge detection is set

(IRQnSCB = 1, IRQnSCA = 0)

• When a falling or rising edge occurs in IRQn input when both-edge detection is set

(IRQnSCB = IRQnSCA = 1)

Note:

n = 7 to 0

H8S2245 Datasheet(PDF) 152 Page - Renesas Technology Corp