45111 datasheet(169/184 Pages) ETC2

169 / 184 page

15 Appendix E: SX Data Sheet

SX-Key/Blitz Development System Manual 2.0

• Parallax, Inc. • Page 169

15.3.2.4

ST_B – Schmitt-Trigger Enable Register

A bit set to ‘1’ in this register disables the Schmitt-Trigger input on the corresponding port pin. A bit set

to ‘0’ in this register enables the Schmitt-Trigger input on the corresponding port pin.

15.3.2.5

WKEN_B – Wake Up Enable Register

A bit set to ‘1’ in this register disables the multi-input wake up for the corresponding port pin. A bit set to

‘0’ in this register enables the multi-input wake up for the corresponding port pin.

15.3.2.6

WKED_B – Wake Up Edge Select Register

A bit set to ‘1’ in this register selects falling edge detection for the corresponding port pin.

A bit set to ‘0’ in this register selects rising edge detection for the corresponding port pin.

15.3.2.7

WKPND_B – MIWU Pending Register

A bit set to ‘1’ in this register indicates a rising or falling edge was detected for the corresponding port

pin. A bit set to ‘0’ in this register indicates no edge was detected on the corresponding port pin since

that bit was last cleared.

RB7 RB6 RB5 RB4 RB3 RB2 RB1 RB0

ST_B

RB7 RB6 RB5 RB4 RB3 RB2 RB1 RB0

WKEN_B

RB7 RB6 RB5 RB4 RB3 RB2 RB1 RB0

WKED_B

RB7 RB6 RB5 RB4 RB3 RB2 RB1 RB0

WKPND_B

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