MCP9902 datasheet(27/50 Pages) MICROCHIP

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 2015-2016 Microchip Technology Inc.

DS20005382C-page 27

MCP9902/3/4

EXT(N) HI LIM TEMP HB – EXTERNAL DIODE N HIGH TEMPERATURE LIMIT,

HIGH BYTE REGISTER (ADDRESSES 07H AND 0DH, 15H, 2CH)

RW-0

RW-1

RW-0

RW-1

RW-0

RW-1

RW-0

RW-1

EXT(N)_HLH<7:0>

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 in unknown

7-0

EXT(N)_HLH<7:0>

: Integer value of the External Diode n temperature reading, where N = 1 to 3

depending on device

EXT(N) HI LIM LB – EXTERNAL DIODE N HIGH LIMIT TEMPERATURE, LOW

BYTE REGISTER (ADDRESSES 13H, 17H, 2EH)

R-0

EXT(N)_HLL<2:0>

—

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 in unknown

7-5

EXT(N)_HLL<2:0>

: Fractional portion of the High Limit Temperature to be added to the value at the

respective high byte registers

111

= 0.875°C

110

= 0.750°C

101

= 0.625°C

100

= 0.500°C

011

= 0.375°C

010

= 0.250°C

001

= 0.125°C

000

= 0.000°C

4-0

Unimplemented

: Read as ‘0’

EXT(N) LO LIM HB – EXTERNAL DIODE N LOW LIMIT, HIGH BYTE

TEMPERATURE REGISTER (ADDRESSES 08H AND 0EH, 16H, 2DH)

RW-0

RW-1

RW-0

RW-1

RW-0

RW-1

RW-0

RW-1

EXT(N)_LLHB<7:0>

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 in unknown

7-0

EXT(N)_LLHB<7:0>

: Integer portion of External Diode n Low temperature Limit, where n = 1 to 3

depending on device

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