ST7637 datasheet(170/210 Pages) SITRONIX

170 / 210 page

ST7637

Ver 1.6

170/210

2009/03

9.1.71. TMPHYS: Temp. Hysteresis Set for Frame Freq. Adj. (F3H)

HEX

Command

(F3h)

st parameter

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

TEMP Rising State

TEMP Falling State

Freq. changing point A

TA[6:0]+TH[3:0]

TA[6:0]

Freq. changing point B

TB[6:0]+TH[3:0]

TB[6:0]

Freq. changing point C

TC[6:0]+TH[3:0]

TC[6:0]

TH Temperature(

)

℃

℃ – 1 = TH[3:0]

Example:

If TH wants to set 5

, TH[3:0]=5

℃

-1=4.

Restriction

Temp. hysteresis value should be smaller than the gap of temp. range.

Availability

Status

Availability

Normal Mode On, Idle Mode Off, Sleep Out

Yes

Normal Mode On, Idle Mode On, Sleep Out

Yes

Partial Mode On, Idle Mode Off, Sleep Out

Yes

Partial Mode On, Idle Mode On, Sleep Out

Yes

Sleep In

Yes

Default

Status

Default Value(TH[3:0])

Power On Sequence

04h

S/W Reset

04h

H/W Reset

04h

ST7637 Datasheet(PDF) 170 Page - Sitronix Technology Co., Ltd.

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