EM78P568

8-bit OTP Micro-controller

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* This specification are subject to be changed without notice.

37

01/31/2004

V4.7

IOCF (Interrupt mask)

(Interrupt mask register)

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

INT3

DETO

INT2

INT1

INT0

CNT2

CNT1

TCIF

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

Bit 0 ~ 7 : interrupt enable bit

0

disable interrupt

1

enable interrupt

The status after interrupt and the interrupt sources list as the table below.

Interrupt signal

IDLE mode

GREEN mode

NORMAL mode

RA(7,6)=(1,0)

+ SLEP

RA(7,6)=(x,0)

no SLEP

RA(7,6)=(x,1)

no SLEP

TCC time out

IOCF bit0=1

And "ENI"

(1) Wake-up

(2) Interrupt (jump to address 8 at

page0)

(3) after RETI instruction, jump to

SLEP Next instruction

Interrupt

(jump to address 8 at

page0)

Interrupt

(jump to address 8 at

page0)

COUNTER1 time out

IOCF bit1=1

And "ENI"

(1) Wake-up

(2)Interrupt (jump to address 8 at

page0)

(3) after RETI instruction, jump to

SLEP Next instruction

Interrupt

(jump to address 8 at

page0)

Interrupt

(jump to address 8 at

page0)

COUNTER2 time out

IOCF bit2=2

And "ENI"

(1) Wake-up

(2) Interrupt (jump to address 8 at

page0)

(3) after RETI instruction, jump to

SLEP Next instruction

Interrupt

(jump to address 8 at

page0)

Interrupt

(jump to address 8 at

page0)

PORT7(0~3)

IOCF bit3 or bit4 or

bit5 or bit7=1

And "ENI"

(1) Wake-up

(2) Interrupt (jump to address 8 at

page0)

(3) after RETI instruction, jump to

SLEP Next instruction

Interrupt

(jump to address 8 at

page0)

Interrupt

(jump to address 8 at

page0)

DETO

IOCF bit6 = 1

And “ENI”

No function

No function

Interrupt

(jump to address 8 at

page0)

<Note> PORT70 's interrupt function is controlled by IOCF bit 3. It's falling edge or rising edge trigger

(controlled by CONT register bit7).

PORT7(1~3) 's wakeup functions are controlled by IOCF bit (4,5,7). They are falling edge trigger.

DETO’s interrupt function is controlled by IOCF bit 6. It’s falling edge trigger, falling and rising

edge trigger (set by RD PAGE0 bit 7).

<ps> It only happens when master and 16.386kHz mode is selected.