LM90

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SNIS126A – MAY 2004 – REVISED MARCH 2013

For LHS and RHSHB: HIGH setpoint temperature data. Power up default is LHIGH = RHIGH = 70°C. 1LSB =

1°C. Two's complement format.

Table 7. LOCAL and REMOTE HIGH SETPOINT REGISTERS (RHSLB) (Read/Write Address 13h):

BIT

D7

D6

D5

D4

D3

D2

D1

D0

Value

0.5

0.25

0.125

0

0

0

0

0

For RHSLB: Remote HIGH Setpoint Low Byte temperature data. Power up default is 0°C. 1LSB = 0.125°C.

Two's complement format.

LOCAL and REMOTE LOW SETPOINT REGISTERS (LLS, RLSHB, and RLSLB)

Table 8. LOCAL and REMOTE LOW SETPOINT REGISTERS (LLS, RLSHB) (Read Address 06h, 08h, /Write

Address 0Ch, 0Eh):

BIT

D7

D6

D5

D4

D3

D2

D1

D0

Value

SIGN

64

32

16

8

4

2

1

For LLS and RLSHB: HIGH setpoint temperature data. Power up default is LHIGH = RHIGH = 0°C. 1LSB = 1°C.

Two's complement format.

Table 9. LOCAL and REMOTE LOW SETPOINT REGISTERS (RLSLB) (Read/Write Address 14h):

BIT

D7

D6

D5

D4

D3

D2

D1

D0

Value

0.5

0.25

0.125

0

0

0

0

0

For RLSLB: Remote HIGH Setpoint Low Byte temperature data. Power up default is 0°C. 1LSB = 0.125°C. Two's

complement format.

REMOTE TEMPERATURE OFFSET REGISTERS (RTOHB and RTOLB)

Table 10. REMOTE TEMPERATURE OFFSET REGISTERS (RTOHB) (Read/Write Address 11h):

BIT

D7

D6

D5

D4

D3

D2

D1

D0

Value

SIGN

64

32

16

8

4

2

1

For RTOHB: Remote Temperature Offset High Byte. Power up default is LHIGH = RHIGH = 0°C. 1LSB = 1°C.

Two's complement format.

Table 11. REMOTE TEMPERATURE OFFSET REGISTERS (RTOLB) (Read/Write Address 12h):

BIT

D7

D6

D5

D4

D3

D2

D1

D0

Value

0.5

0.25

0.125

0

0

0

0

0

For RTOLB: Remote Temperature Offset High Byte. Power up default is 0°C. 1LSB = 0.125°C. Two's

complement format.

The offset value written to these registers will automatically be added to or subtracted from the remote

temperature measurement that will be reported in the Remote Temperature registers.

LOCAL and REMOTE T_CRIT REGISTERS (RCS and LCS)

Table 12. LOCAL and REMOTE T_CRIT REGISTERS (RCS and LCS) (Read/Write Address 20h, 19h):

BIT

D7

D6

D5

D4

D3

D2

D1

D0

Value

SIGN

64

32

16

8

4

2

1

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