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[v1-01] 2015-Sep-07

AS3722 − Detailed Descriptions- System Functions

10-Bit ADC

Description

This general purpose ADC can be used for measuring several

voltages and currents to perform functions like battery monitor,

temperature supervision, button press detection, etc.

Figure 69:

ADC Input Sources

Source

Range

LSB

Mode

Description

SD0_current

1.6V

1.56mV

1:1

output current of SD0

SD1_current

1.6V

1.56mV

1:1

output current of SD1

SD6_current

1.6V

1.56mV

1:1

output current of SD6

DIE temperature

1.6V

1.56mV

1:1

Tj = (0.7698 * ADC10<9:0>) - 274

VSUP

5.5V

6.25mV

4:1

check main system supply voltage

GPIO1

1.6V / 5.5V

1.56 /

6.25mV

1:1 / 4:1

GPIO2

1.6V / 5.5V

1.56 /

6.25mV

1:1 / 4:1

GPIO3

1.6V / 5.5V

1.56 /

6.25mV

1:1 / 4:1

GPIO4

1.6V / 5.5V

1.56 /

6.25mV

1:1 / 4:1

GPIO6

1.6V / 5.5V

1.56 /

6.25mV

1:1 / 4:1

GPIO7

1.6V / 5.5V

1.56 /

6.25mV

1:1 / 4:1

VBAT

15V

23.44mV

15:1

value valid below 15V only

PWM_CLK2/

ADC1

1.6V / 5.5V

1.56 /

6.25mV

1:1 / 4:1

PWM_DAT2/

ADC2

1.6V / 5.5V

1.56 /

6.25mV

1:1 / 4:1

reserved

TEMP1_SD0

1.56mV

Tj = 326.5 - ADC10<9:0> * 0.3734

TEMP2_SD0

1.56mV

Tj = 326.5 - ADC10<9:0> * 0.3734

TEMP3_SD0

1.56mV

Tj = 326.5 - ADC10<9:0> * 0.3734

TEMP4_SD0

1.56mV

Tj = 326.5 - ADC10<9:0> * 0.3734

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