HD404848 查看數據表（PDF） - Hitachi -> Renesas Electronics

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HD404848

4-Bit Single-Chip Microcomputer

Hitachi -> Renesas Electronics 

HD404849 Series

Interrupt

enable flag

$ 000,0

IE

INT0 interrupt

$ 000,2

IF0

$ 000,3

IM0

INT1 interrupt

$ 001,0

IF1

$ 001,1

IM1

$ 001,2

Timer A interrupt IFTA

$ 001,3

IMTA

$ 002,0

Timer B interrupt IFTB

$ 002,1

IMTB

$ 002,2

Timer C interrupt IFTC

$ 002,3

IMTC

$ 003,0

Timer D interrupt IFTD

$ 003,1

IMTD

A/D interrupt

$ 003,2

IFAD

$ 003,3

IMAD

Note: $m,n is RAM address $m, bit number n.

Sequence control

• Push PC/CA/ST

• Reset IE

• Jump to vector

address

Priority control logic

Vector

address

$ 022,0

IF2 INT2 interrupt

$ 022,1

IM2

$ 022,2

IF3 INT3 interrupt

$ 022,3

IM3

$ 023,2

IFS Serial interrupt

$ 023,3

IMS

Figure 9 Interrupt Control Circuit

20

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