Datasheet

20 - SPECIAL FUNCTION REGISTER OVERVIEW ST10F269

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EXICON (F1C0h / E0h ESFR Reset Value: 0000h

EXISEL (F1DAh / EDh) ESFR Reset Value: 0000h

XP3IC (F19Eh / CFh)

ESFR Reset Value: --00h

Note: 1. XP3IC register has the same bit field as xxIC interrupt registers

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EXI7ES EXI6ES EXI5ES EXI4ES EXI3ES EXI2ES EXI1ES EXI0ES

RW RW RW RW RW RW RW RW

EXIxES(x=7...0) External Interrupt x Edge Selection Field (x=7...0)

0 0: Fast external interrupts disabled: standard mode

EXxIN pin not taken in account for entering/exiting Power Down mode.

0 1: Interrupt on positive edge (rising)

Enter Power Down mode if EXiIN = ‘0’, exit if EXxIN = ‘1’ (referred as ‘high’ active level)

1 0: Interrupt on negative edge (falling)

Enter Power Down mode if EXiIN = ‘1’, exit if EXxIN = ‘0’ (referred as ‘low’ active level)

1 1: Interrupt on any edge (rising or falling)

Always enter Power Down mode, exit if EXxIN level changed.

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EXI7SS EXI6SS EXI5SS EXI4SS EXI3SS EXI2SS EXI1SS EXI0SS

RW RW RW RW RW RW RW RW

EXIxSS External Interrupt x Source Selection (x=7...0)

‘00’: Input from associated Port 2 pin.

‘01’: Input from “alternate source”.

‘10’: Input from Port 2 pin ORed with “alternate source”.

‘11’: Input from Port 2 pin ANDed with “alternate source”.

EXIxSS Port 2 pin Alternate Source

0P2.8 CAN1_RxD

1P2.9 CAN2_RxD

2P2.10 RTCSI

3P2.11 RTCAI

4...7 P2.12...15 Not used (zero)

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XP3IR XP3IE XP3ILVL GLVL

RW RW RW RW