H8SSLASH2214 datasheet(165/936 Pages) RENESAS

部件名	H8S/2214

功能描述	16-Bit Single-Chip Microcomputer H8S Family/H8S/2200 Series

PDF	936 Pages

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制造商	RENESAS [Renesas Technology Corp]

网页	http://www.renesas.com

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165 / 936 page

Section 5 Interrupt Controller

Rev.4.00 Sep. 18, 2008 Page 105 of 872

REJ09B0189-0400

Figure 5.4 shows a block diagram of the priority decision circuit.

Interrupt

acceptance

control

8-level

mask control

Default priority

determination

Vector number

Interrupt control mode 2

IPR

Interrupt source

I2 to I0

Interrupt

control

mode 0

Figure 5.4 Block Diagram of Interrupt Control Operation

(1) Interrupt Acceptance Control

In interrupt control mode 0, interrupt acceptance is controlled by the I bit in CCR.

Table 5.6 shows the interrupts selected in each interrupt control mode.

Table 5.6

Interrupts Selected in Each Interrupt Control Mode (1)

Interrupt Mask Bits

Interrupt Control Mode

Selected Interrupts

All interrupts

NMI interrupts

All interrupts

*: Don't care

(2) 8-Level Control

In interrupt control mode 2, 8-level mask level determination is performed for the selected

interrupts in interrupt acceptance control according to the interrupt priority level (IPR).

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