 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
MCP23S17T-E/SP Datasheet(PDF) 19 Page - Microchip Technology |
|
||||||||||||||||||||||||||||||
MCP23S17T-E/SP Datasheet(HTML) 19 Page - Microchip Technology |
|
|
19 / 42 page  2005-2016 Microchip Technology Inc. DS20001952C-page 19 MCP23017/MCP23S17 3.5.3 INTERRUPT-ON-CHANGE CONTROL REGISTER The GPINTEN register controls the interrupt-on-change feature for each pin. If a bit is set, the corresponding pin is enabled for interrupt-on-change. The DEFVAL and INTCON registers must also be configured if any pins are enabled for interrupt-on-change. 3.5.4 DEFAULT COMPARE REGISTER FOR INTERRUPT-ON-CHANGE The default comparison value is configured in the DEFVAL register. If enabled (via GPINTEN and INTCON) to compare against the DEFVAL register, an opposite value on the associated pin will cause an interrupt to occur. REGISTER 3-3: GPINTEN: INTERRUPT-ON-CHANGE PINS (ADDR 0x02) (Note 1) R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 GPINT7 GPINT6 GPINT5 GPINT4 GPINT3 GPINT2 GPINT1 GPINT0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’ -n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown bit 7-0 GPINT<7:0>: General purpose I/O interrupt-on-change bits <7:0> 1 = Enables GPIO input pin for interrupt-on-change event. 0 = Disables GPIO input pin for interrupt-on-change event. Note 1: Refer to INTCON. REGISTER 3-4: DEFVAL: DEFAULT VALUE REGISTER (ADDR 0x03) R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 DEF7 DEF6 DEF5 DEF4 DEF3 DEF2 DEF1 DEF0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’ -n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown bit 7-0 DEF<7:0>: Sets the compare value for pins configured for interrupt-on-change from defaults <7:0> (Note 1) If the associated pin level is the opposite from the register bit, an interrupt occurs. (Note 2) Note 1: Refer to INTCON. 2: Refer to INTCON and GPINTEN. |
Similar Part No. - MCP23S17T-E/SP |
|
Similar Description - MCP23S17T-E/SP |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
