EM78P809NP datasheet(29/75 Pages) EMC

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EM78P809N

8-Bit Microcontroller

Product Specification (V1.0) 07.26.2005

• 25

(This specification is subject to change without further notice)

External Interrupt

INT Pin

Secondary

Function Pin

Enable Condition

Edge

Digital Noise

Reject

/INT0

P60

ENI + INT0EN (IOCB)

Falling

INT1

P61

ENI + EXIE1 (IMR2)

Rising or Falling

15/Fc, 63/Fc

INT3

P80, TC3

ENI + EXIE3 (IMR2)

Rising or Falling or

Rising/Falling

7/Fc

/INT5

P73, /SLEEP

ENI + EXIE5 (IMR2)

•

ADOSCR

− AD Offset Control Register ( Address : 0Ch )

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

CALI

SIGN

VOF[2]

VOF[1]

VOF[0]

Bit 7 (CALI)

: Calibration enable bit for A/D offset

CALI = “0” :

Calibration disable

CALI = “1” :

Calibration enable

Bit 6 ( SIGN ) :

Polarity bit of offset voltage

SIGN = “0” :

Negative voltage

SIGN = “1” :

Positive voltage

Bit 5 ~ Bit 3 ( VOF[2] ~ VOF[0] ) :

Offset voltage bits

•

IMR1

− Interrupt Mask Register 1 ( Address : 0Eh )

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

EXIE5

TCIE2

ADIE

EXIE3

TCIE4

SPIE

TCIE3

Bit 7 ( EXIE5 ) :

External/INT5 pin Interrupt enable bit.

EXIE5 = “0” :

disable EXIF5 interrupt

EXIE5 = “1” :

enable EXIF5 interrupt

Bit 6 ( TCIE2 ) :

Timer/Counter 2 Interrupt enable bit.

TCIE2 = “0” :

disable TCIF2 interrupt

TCIE2 = “1” :

enable TCIF2 interrupt

Bit 5 ( ADIE ) :

ADC complete interrupt enable bit.

ADIE = “0” :

disable ADIF interrupt

ADIE = “1” :

enable ADIF interrupt

EM78P809NP Datasheet(PDF) 29 Page - ELAN Microelectronics Corp

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