MC68HC908GR4MP datasheet(54/286 Pages) FREESCALE

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Resets and Interrupts

MC68HC908GR8 • MC68HC908GR4 Data Sheet, Rev. 7

Freescale Semiconductor

4.3.3.1 Interrupt Status Register 1

IF6–IF1 — Interrupt Flags 6–1

These flags indicate the presence of interrupt requests from the sources shown in Table 4-2.

1 = Interrupt request present

0 = No interrupt request present

Bit 1 and Bit 0 — Always read 0

4.3.3.2 Interrupt Status Register 2

IF14–IF8 — Interrupt Flags 14–7

These flags indicate the presence of interrupt requests from the sources shown in Table 4-2.

1 = Interrupt request present

0 = No interrupt request present

Bit 0 — Always reads 0

4.3.3.3 Interrupt Status Register 3

IF16–IF15 — Interrupt Flags 16–15

This flag indicates the presence of an interrupt request from the source shown in Table 4-2.

1 = Interrupt request present

0 = No interrupt request present

Bits 7–2 — Always read 0

Address:

$FE04

Bit 7

654321

Bit 0

Read:

IF6

IF5

IF4

IF3

IF2

IF1

Write:

RRRRRRRR

Reset:

00000000

R = Reserved

Figure 4-6. Interrupt Status Register 1 (INT1)

Address:

$FE05

Bit 7

654321

Bit 0

Read:

IF14

IF13

IF12

IF11

IF10

IF9

IF8

Write:

RRRRRRRR

Reset:

00000000

R = Reserved

Figure 4-7. Interrupt Status Register 2 (INT2)

Address:

$FE06

Bit 7

654321

Bit 0

Read:

000000

IF16

IF15

Write:

RRRRRRRR

Reset:

00000000

R = Reserved

Figure 4-8. Interrupt Status Register 3 (INT3)

MC68HC908GR4MP Datasheet(PDF) 54 Page - Freescale Semiconductor, Inc

MC68HC908GR4MP Datasheet(HTML) 54 Page - Freescale Semiconductor, Inc

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