FS5908

Rev. 1.2

15/22

14.1 Temperature Register (Pointer=00h, Read Only)

Pointer Name Type 15

14

13

12

11

10 9

8

7

6

5

4

3

2

1

0

lowbat alarm high low Tdata<10:0>

Set_adc0=0

h’00

Reg0 R

adc_trans

0

0

1

Te<11:0>

Set_adc0=1

When set_adco = 0:

Reg0<15> (adc_trans): When the temperature output value is updated, the bit becomes 1; when the register is

read, the bit is cleared to 0.

Reg0<14> (lowbat):

Low battery warning. When the bit is 1, it means the operating voltage of the chip is

lower than the setting voltage. For the setting method, please refer to “2.2 Control Register Reg1<7>

(setlowbat)”.

Reg0<13> (alarm):

The bit is always comparison mode output. When the temperature value is higher than

(or equal to) the upper bound value, the bit becomes 1, and until the temperature value is lower than (or equal

to) the lower bound value, the bit becomes 0.

Reg0<12> (high): When the temperature value is higher than (or equal to) the upper bound value, the bit is 1,

on the contrary, the bit is 0.

Reg0<11> (low): When the temperature value is lower than (or equal to) the lower bound value, the bit is 1, on

the contrary, the bit is 0.

Reg0<10:0>:

Temperature data. The following table is the meaning that every bit stands for:

10

9

8

7

6

5

4

3

2

1

0

+/-

64

32

16

8

4

2

1

0.5

0.25

0.125

Digit Output Value

Ex: Temperature

Digit

Hexadecimal

+125℃

011-1110-1000

3E8

+25℃

000-1100-1000

0C8

+0.5℃

000-0000-0100

004

0℃

111-1111-1111

7FF

-0.5℃

111-1111-1100

7FC

-25℃

111-0011-1000

738

-125℃

100-0001-1000

418

Note: When the temperature is equal or lower than 0℃, the temperature is expressed by 2’s complement.

When set-adco = 1:

Output is the direct output of digital silicon temperature sensor Te<11:0>.