W83L771ASG Datasheet, PDF (18/28 Pages) Nuvotem Talema – W83L771AWG W83L771ASG Nuvoton H/W Monitoring IC

W83L771AWG/W83L771ASG
8.2 Data Format of Temperature Registers (LT, RTHB, RTLB, LHS, RHSHB,
RHSLB, LLS, RLSHB, RLSLB, RTOHB, RTOLB, RCS, LCS)
The following table shows the data format, Two‟s Complement, of the temperature, including Local
Temperature (LT), Remote Temperature High Byte (RTHB), Local High Set point (LHS), Remote High
Set point High Byte (RHSHB), Local Low Set point (LLS), Remote Low Set point High Byte (RLSHB),
Remote Temperature Offset High Byte (RTOHB), Remote T_CRIT Set point (RCS), Local T_CRIT Set
point (LCS), Remote Temperature Low Byte (RTLB), Remote High Set point Low Byte (RHSLB),
Remote Low Set point Low Byte (RLSLB), and Remote Temperature Offset Low Byte (RTOLB). Only
remote temperature, remote high set point, remote low set point, and remote temperature offset
support two bytes, up to 0.125℃ resolution, for the temperature data format; others support one byte,
up to 1℃ resolution, for the temperature data format.
REGISTER OF HIGH BYTE: LT, RTHB, LHS, RHSHB, LLS, RLSHB, RTOHB, RCS, LCS
DATA FORMAT: TWO’S COMPLEMENT FORMAT
BIT
D7
D6
D5
D4
D3
D2
D1
D0
VALUE
Sign
64
32
16
8
4
2
1
Unit: ℃
REGISTER OF LOW BYTE: RTLB, RHSLB, RLSLB, RTOLB
DATA FORMAT: TWO’S COMPLEMENT FORMAT
BIT
D7
D6
D5
D4
D3
D2
D1
D0
VALUE
0.5
0.25
0.125
0
0
0
0
0
The following table shows some examples.
REGISTER OF HIGH BYTE
REGISTER OF LOW BYTE (IF ANY)
TEMPERATURE
D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 D5 D4 D3 D2 D1 D0
+127.875℃ 0 1 1 1 1 1 1 1 1 1 1 X X X X X
0.125℃
0 0 0 0 0 0 0 0 0 0 1XXXXX
0℃
0 0 0 0 0 0 0 0 0 0 0XXXXX
-1.125℃
1 1 1 1 1 1 1 0 1 1 1XXXXX
-25.75℃
1 1 1 0 0 1 1 0 0 1 0XXXXX
-127.875℃
1 0 0 0 0 0 0 0 0 0 1XXXXX
To obtain the two-byte temperature data correctly, it is required to read High Byte data, followed by
reading Low Byte data.
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Publication Release Date: 2009/11/19
Version: 1.91