ADUC7030 Datasheet, PDF(58/150 Page) Analog Devices – Integrated Precision Battery Sensor For Automotive

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ADUC7030 Datasheet, PDF (58/150 Pages) Analog Devices – Integrated Precision Battery Sensor For Automotive

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ADuC7030/ADuC7033

Preliminary Technical Data

Voltage/Temperature Channel ADC Control Register:

Name:

ADC1CON

Address:

0xFFFF0510

Default Value: 0x0000

Access:

Read/Write

Function:

The Voltage/Temperature Channel ADC Control MMR is a 16-bit register that is used to configure the V/T-ADC.

Note:

When enabling/disabling the Voltage/Temperature ADC, the Voltage Attenuator must also be enabled/disabled via

HVCFG1[7].

Table 31. ADC1CON MMR Bit Designations

Bit

Description

Voltage/Temperature Channel ADC Enable

This bit is set to 1 by user code to enable the V/T-ADC. When enabling/disabling the Voltage channel, the Voltage Attenuator

must also be enabled/disabled via HVCFG1[7] if measuring battery voltage.

Clearing this bit to 0, powers down the V/T-ADC.

14, 13 VTEMP Current Source Enable

0, 0 Current Sources Off

0, 1 Enable 50ÂµA current source on VTEMP+

1, 0 Enable 50ÂµA current source on GND_SW

1, 1 Enable 50ÂµA current source on both VTEMP+ and GND_SW

12â 10 Not Used. These bits are reserved for future functionality and should not be modified by user code

Voltage/Temperature Channel ADC Output Coding

This bit is set to 1 by user code to configure V/T-ADC output coding as unipolar

This bit is cleared to 0 by user code to configure V/T -ADC output coding as 2âs complement

Not Used. This bit is reserved for future functionality and should be written as 0 by user code

7, 6

Voltage/Temperature Channel ADC Input Select

0, 0 VBAT/24, AGND

0, 1 VTEMP, GND_SW

1, 0 Internal Sensor

1, 1 Internal Short

VBAT attenuator selected

External Temperature Input selected, conversion result written to ADC2DAT

Internal Temperature Sensor Input selected, conversion result written to ADC2DAT

Shorted Input

5, 4

Voltage Temperature Channel ADC Reference Select

0, 0 Internal, 1.2V precision reference selected.

0, 1 External reference inputs (VREF, GND_SW) selected.

1, 0 External reference inputs divided by 2 (VREF, GND_SW)/2 selected. This allows an external reference up to

REG_AVDD

1, 1 (REG_AVDD, AGND) / 2 selected for the Voltage Channel.

(REG_AVDD, GND_SW) / 2 selected for the Temperature Channel.

3 â 0 Not Used. These bits are reserved for future functionality and should not be written as 0 by user code

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