Data Sheet

Product Specification
Ver 1.2  19 / 43
(22) Temperature Sensor Calibration (R40H)
Action W/R C/D D7 D6 D5 D4 D3 D2 D1 D0
Sensing Temperature
0 0 0 1 0 0 0 0 0 0
1 1 D10 D9/TS6 D8/TS5 D7/TS4 D6/TS3 D5/TS2 D4/TS1 D3/TS0
1 1 D2 D1 D0 - - - - -
This command reads the temperature sensed by the temperature sensor.
TS[7:0]: When TSE (R41h) is set to 0, this command reads internal temperature sensor value.
D[10:0]: When TSE (R41h) is set to 1, this command reads external LM75 temperature sensor value.
(23) Temperature Sensor Calibration (R41H)
Action W/R C/D D7 D6 D5 D4 D3 D2 D1 D0
Calibrate Temperature Sensor
0 0 0 1 0 0 0 0 0 1
0 1 TSE - - TO[3:0]
This command selects Internal or External temperature sensor.
TSE: Internal temperature sensor switch
0: Enable (default) 1: Disable; using external sensor.
TO[3:0]: Temperature offset.
TO[3]: sign bit 0b: + 1b: -
TO[2:0]: offset value
TO[3:0] Calculation TO[3:0] Calculation
0000 b 0 1000 -8
0001 1 1001 -7
0010 2 1010 -6
… … … …
0110 6 1110 -2
0111 7 1111 -1
(24) Temperature Sensor Write (TSW) (R42H)
Action W/R C/D D7 D6 D5 D4 D3 D2 D1 D0
Write External Temperature
Sensor
0 0 0 1 0 0 0 0 1 0
0 1 WATTR[7:0]
0 1 WMSB[7:0]
0 0 WLSB[7:0]
This command reads the temperature sensed by the temperature sensor.
WATTR: D[7:6]: I
2
C Write Byte Number
00b : 1 byte (head byte only)
01b : 2 bytes (head byte + pointer)
10b : 3 bytes (head byte + pointer + 1st parameter)
11b : 4 bytes (head byte + pointer + 1st parameter + 2nd parameter)
D[5:3]: User-defined address bits (A2, A1, A0)
D[2:0]: Pointer setting
WMSB[7:0]: MSByte of write-data to external temperature sensor.
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