MCP8021 datasheet(37/66 Pages) MICROCHIP

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DS20006265D-page 37

MCP8021/2

4.9

CFG0: CONFIGURATION REGISTER 0

U-0

R/W-0

U-0

R/W-0

—OPAMP(1)

SLEEP

—

EXTUVLO

EXTSC

EXTOC1

EXTOC0

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

Unimplemented: Read as ‘0’

bit 6

OPAMP: Internal Operational Amplifier Power-Down (MCP8022)(1)

1 = Disables operational amplifiers during Standby mode

0 = Enables operational amplifiers during Standby mode

bit 5

SLEEP: Sleep Mode

Bit may only be changed while in Standby mode.

1 = System enters Sleep mode when OE = 0

0 = System enters Standby mode when OE = 0

bit 4

Unimplemented: Read as ‘0’

bit 3

EXTUVLO: External MOSFET Undervoltage Lockout

1 = Disable

0 = Enable

bit 2

EXTSC: External MOSFET Short-Circuit Detection

1 = Disables

0 = Enables

bit 1-0

EXTOC[1:0]: External MOSFET Overcurrent Threshold

00 = Overcurrent Threshold limit set to 0.250V

01 = Overcurrent Threshold limit set to 0.500V

10 = Overcurrent Threshold limit set to 0.750V

11 = Overcurrent Threshold limit set to 1.000V

Note 1: The OPAMP bit has no effect on MCP8021.

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