Copyright

© ANPEC Electronics Corp.

Rev. A.3 - Jun., 2017

APL6002

www.anpec.com.tw

10

Function Description (Cont.)

The APL6002 I2C address is programmable, which can

be selected from 0x70h to 0x7Eh by the 7-bit slave ad-

dress with one R/W bit. The slave device compares the

7-bit slave address with its address and matches. The

programmable address is selected by a voltage divider

R1 and R2. The Alert/ADDR pin voltage is compared with

8 addresses available internal reference voltage for ad-

dress programming.

Note: If the address programming function is not used,

the Alert/ADDR pin must be connected to VDD via a resis-

tor and the I2C address is used as default value 0x7Eh.

The AINx voltages are digitized directly by high precision

ages are sensed alternately and take 0.6ms every

channel.

When the VDD supply voltage range from 2.8 to 5.5V, the

A/D converter have 10mV of resolution, and 1 to 3.56V of

full scale range. The A/D converter sensing results are

stored in the internal register that shows as follow:

AIN1 A/D data store (TD1): Reg0x03[7] (MSB) ~ Reg0x03

[0] (LSB)

AIN2 A/D data store (TD2): Reg0x04[7] (MSB) ~ Reg0x04

[0] (LSB)

AIN3 A/D data store (TD3): Reg0x05[7] (MSB) ~ Reg0x05

[0] (LSB)

If the internal register code is read as Code

register Reg0x03, Reg0x04 and Reg0x05 calculation as follows:

The voltage divider at VIN-R

NTCx

INx

NTCx

AINx

R

R

R

VIN

V

+

×

=

According to the above equation:

Note: If the AINx pin is not used, that must be pulled to the high level. And the C

pin.

Alert

Control

Logic

Alert/ADDR

I2C

Interface

VDD

0x7E

0x7C

0x7A

0x78

0x76

0x74

0x72

0x70

0

20

30

40

50

60

70

80

90

100

10

ADDR Input Voltage (% of VDD)

Address

R1 (kOhm)

R2 (kOhm)

ALT/ADDR

(% of VDD)

0x70

0x72

0x74

0x76

0x78

0x7A

0x7C

0x7E

6

2

25

5.1

2.7

35

4.3

3.6

45

3.9

4.7

55

3.6

6.8

65

2

6.2

75

1.5

8.2

85

10

Open

100

A/D

Converter

I2C

Interface

AINx

VDD

(

Code

10mV

V

or

10mV

1V

V

Code

X

AINx

AINx

X

+

×

=

−

=

10mV

1V

R

R

R

VIN

Code

NTCx

INx

NTCx

X

−









+

×

=