ST7628
9.1.71 TMPHYS: Temp.Hysteresis Set for Frame Freq. Adj.(F3H)
A0
0
RD
1
WR
0
D7
1
D6
1
D5
1
D4
1
D3
D2
D1
D0
HEX
Command
0
0
1
1
F3H
1st parameter
1
1
0
-
-
-
-
TH3 TH2 TH1 TH0
Description
Temp. hysteresis range set for frame freq. adj.
Parameter TH[3:0] is used to set Temp. hysteresis range.
The relationship between temp. state and temp. range value is shown below.
TEMP Range Value
Freq. changing point A
Freq. changing point B
Freq. changing point C
TEMP Rising State
TA[6:0]+TH[3:0]
TB[6:0]+TH[3:0]
TC[6:0]+TH[3:0]
TEMP Falling State
TA[6:0]
TB[6:0]
TC[6:0]
TH Temperature(℃) - 1 = TH[3:0]
Example:
If TH wants to set 5℃, TH[3:0]=5-1=4.
Restriction
Register
Temp. hysteresis value should be smaller than the gap of temp. range.
Availability
Status
Availability
Yes
Normal Mode On, Idle Mode Off, Sleep Out
Normal Mode On, Idle Mode On, Sleep Out
Partial Mode On, Idle Mode Off, Sleep Out
Partial Mode On, Idle Mode On, Sleep Out
Sleep In
Yes
Yes
Yes
Yes
Default
Status
Power On Sequence
S/W Reset
Default Value(TH[3:0])
04h
04h
04h
H/W Reset
Ver 1.4
182/213
2008/08
SITRONIX [ SITRONIX TECHNOLOGY CO., LTD. ]
