H8SSLASH2214 datasheet(160/936 Pages) RENESAS

Il numero della parte	H8S/2214

Spiegazioni elettronici	16-Bit Single-Chip Microcomputer H8S Family/H8S/2200 Series

PDF	936 Pages

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Produttore elettronici	RENESAS [Renesas Technology Corp]

Homepage	http://www.renesas.com

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160 / 936 page

Section 5 Interrupt Controller

Rev.4.00 Sep. 18, 2008 Page 100 of 872

REJ09B0189-0400

IRQn interrupt

request

IRQnE

IRQnF

Clear signal

Edge/level

detection circuit

IRQnSCA, IRQnSCB

IRQn input

Note: n = 7 to 0

Figure 5.2 Block Diagram of Interrupts IRQn

Figure 5.3 shows the timing of setting IRQnF.

IRQn

input pin

IRQnF

Note: n = 7 to 0

Figure 5.3 Timing of Setting IRQnF

The vector numbers for IRQ7 to IRQ0 interrupt exception handling are 23 to 16.

Detection of IRQ7 to IRQ0 interrupts does not depend on whether the relevant pin has been set for

input or output. However, when a pin is used as an external interrupt input pin, do not clear the

corresponding DDR to 0 and use the pin as an I/O pin for another function. Since interrupt request

flags IRQ7F to IRQ0F are set when the setting condition is satisfied, regardless of the IER setting,

only the necessary flags should be referenced.

(3) EXIRQ7 to EXIRQ0 Interrupts

Interrupts EXIRQ7 to EXIRQ0 are for use by external expansion modules. An interrupt is

requested by a low-level input signal at one of pins

EXIRQ7 to EXIRQ0.

H8S/2214 Scheda tecnica(PDF) 160 Page - Renesas Technology Corp