ASC7621 datasheet(33/50 Pages) ETC2

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October 2006 - 70A06010

aSC7621

HLFRQ

FRQ [2:0]

PWM

Frequency

000

~10 Hz

001

~15 Hz

010

~23 Hz

011

~30 Hz (Default)

100

~38 Hz

101

~47 Hz

110

~62 Hz

111

~94 Hz

000

~23 kHz

001

~24 kHz

010

~25 kHz

011

~26 kHz

100

~27 kHz

101

~28 kHz

110

~29 kHz

111

~30 kHz

Table 16 Register Setting vs PWM Frequency

RAN[3:0]

Linear Control

Range (

°C)

0000

0001

2.5

0010

3.33

0011

0100

0101

6.67

0110

0111

1000

13.33

1001

1010

1011

26.67

1100

32 (default)

1101

1110

53.33

1111

Table 17 Zone Range Setting, RAN[3:0]

This register becomes Read-Only when the Ready/Lock/Start/Override register Lock bit is set. Any further attempts to write

to this register shall have no effect. After power up the default value is used for bits 3:0 of registers 5F-61h whenever the

Ready/Lock/Start/Override register Start bit is cleared even though modifications to this register are possible.

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