MCP25020-I Datasheet, PDF (32/66 Pages) Microchip Technology – CAN I/O Expander Family

MCP2502X/5X
REGISTER 5-1:
GPDDR - DATA DIRECTION REGISTER
U-0
R/W-1 R/W-1 R/W-1
—
DDR6 DDR5 DDR4
bit 7
R/W-1
DDR3
R/W-1
DDR2
R/W-1
DDR1
R/W-1
DDR0
bit 0
bit 7
bit 6-0
Unimplemented: Read as ‘0’
DDR6:DDR0: Data Direction Register* bits
1 = corresponding GPIO pin is configured as an input
0 = corresponding GPIO pin is configured as an output
* must bet set if corresponding analog channel is enabled (see ADCON1)
Legend:
R = Readable bit
- n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared x = Bit is unknown
REGISTER 5-2:
GPLAT - GPIO OUTPUT REGISTER
U-0
R/W-0 R/W-0 R/W-0
—
GP6
GP5
GP4
bit 7
R/W-0
GP3
R/W-0
GP2
R/W-0
GP1
R/W-0
GP0
bit 0
bit 7
bit 6-0
Unimplemented: Read as '0’
GP6:GP0: GPIO Bits
1 = corresponding GPIO pin output latch is a ‘1’
0 = corresponding GPIO pin output latch is a ‘0’
Legend:
R = Readable bit
- n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared x = Bit is unknown
REGISTER 5-3:
IOINTEN REGISTER
R/W-0 R/W-0 R/W-0
GP7TXC GP6TXC GP5TXC
bit 7
R/W-0
GP4TXC
R/W-0
GP3TXC
R/W-0 R/W-0
GP2TXC GP1TXC
R/W-0
GP0TXC
bit 0
bit 7-0
GP7TXC:GP0TXC: Transmit-on-change Enable bits
1 = Enable Transmit-On-Change/Compare For Corresponding GPIO/AN Channel
0 = Disable Transmit-On-Change/Compare For Corresponding GPIO/AN Channel
Legend:
R = Readable bit
- n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared x = Bit is unknown
DS21664D-page 32
© 2007 Microchip Technology Inc.