Datasheet

MCP23018/MCP23S18

TABLE 1-5: CONTROL REGISTER SUMMARY (IOCON.BANK = 0)

Name

Address

(hex)

bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0

POR/RST

value

IODIRA 00 IO7 IO6 IO5 IO4 IO3 IO2 IO1 IO0 1111 1111

IODIRB 01 IO7 IO6 IO5 IO4 IO3 IO2 IO1 IO0 1111 1111

IPOLA 02 IP7 IP6 IP5 IP4 IP3 IP2 IP1 IP0 0000 0000

IPOLB 03 IP7 IP6 IP5 IP4 IP3 IP2 IP1 IP0 0000 0000

GPINTENA 04 GPINT7 GPINT6 GPINT5 GPINT4 GPINT3 GPINT2 GPINT1 GPINT0 0000 0000

GPINTENB 05 GPINT7 GPINT6 GPINT5 GPINT4 GPINT3 GPINT2 GPINT1 GPINT0 0000 0000

DEFVALA 06 DEF7 DEF6 DEF5 DEF4 DEF3 DEF2 DEF1 DEF0 0000 0000

DEFVALB 07 DEF7 DEF6 DEF5 DEF4 DEF3 DEF2 DEF1 DEF0 0000 0000

INTCONA 08 IOC7 IOC6 IOC5 IOC4 IOC3 IOC2 IOC1 IOC0 0000 0000

INTCONB 09 IOC7 IOC6 IOC5 IOC4 IOC3 IOC2 IOC1 IOC0 0000 0000

IOCON 0A BANK MIRROR SEQOP

— —ODRINTPOLINTCC 0000 0000

IOCON 0B BANK MIRROR SEQOP — — ODR INTPOL INTCC 0000 0000

GPPUA 0C PU7 PU6 PU5 PU4 PU3 PU2 PU1 PU0 0000 0000

GPPUB 0D PU7 PU6 PU5 PU4 PU3 PU2 PU1 PU0 0000 0000

INTFA 0E INT7 INT6 INT5 INT4 INT3 INT2 INT1 INTO 0000 0000

INTFB 0F INT7 INT6 INT5 INT4 INT3 INT2 INT1 INTO 0000 0000

INTCAPA 10 ICP7ICP6ICP5ICP4ICP3ICP2ICP1ICP00000 0000

INTCAPB 11 ICP7 ICP6 ICP5 ICP4 ICP3 ICP2 ICP1 ICP0 0000 0000

GPIOA 12 GP7 GP6 GP5 GP4 GP3 GP2 GP1 GP0 0000 0000

GPIOB 13 GP7 GP6 GP5 GP4 GP3 GP2 GP1 GP0 0000 0000

OLATA 14 OL7 OL6 OL5 OL4 OL3 OL2 OL1 OL0 0000 0000

OLATB 15 OL7 OL6 OL5 OL4 OL3 OL2 OL1 OL0 0000 0000