Datasheet

MCP2502X/5X

R/W-1 R/W-1 R/W-1 R/W-1 U-0 R/W-0 R/W-0 R/W-0

GPPU CLKEN CLKPS1 CLKPS0 — CMREQ AQT1 AQT0

bit 7 bit 0

bit 7 GPPU

: Weak pull-up enabled

1 = Weak pull-ups disabled

0 = Weak pull-ups enabled (GP7:GP0)

bit 6 CLKEN

1 = Clock Out Function disabled

0 = Clock Out Function enabled

bit 5-4 CLKPS1:CLKPS0: CLKOUT Prescaler bits

00 = F

OSC/1

01 = F

OSC/2

10 = F

OSC/4

11 = F

OSC/8

bit 3 Reserved:

bit 2 CMREQ: Requests mode of operation (allows mode changes via the CAN bus)

1 = Requests Listen-only mode

0 = Requests Normal mode *

* CMREQ must be cleared as default to avoid device entering Listen-only mode on first “Input”

message.

bit 1-0 AQT1:AQT0: Analog Acquisition Time bits

00 = 64T

OSC

01 = 2•(64TOSC)

10 = 4

•(64TOSC)

11 = 8

•(64TOSC)

(e.g., AQT1:AQT0 => 00 => 2.56 µs for a 25 MHz F

OSC)

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