aduc7033bstz-8l-rl Analog Devices, Inc., aduc7033bstz-8l-rl Datasheet - Page 52

• Manufacturer Part Number: aduc7033bstz-8l-rl
• Description: Integrated Precision Battery Sensor For Automotive
• Manufacturer: Analog Devices, Inc.

ADuC7033
Voltage/Temperature Channel ADC Control Register
Name:
Address:
Default Value:
Access:
Function:
Note:
Table 38. ADC1CON MMR Bit Designations
Bit
15
14, 13
12 to 10
9
8
7, 6
5, 4
3 to 0
ADC1CON
0xFFFF0510
0x0000
Read/write
The voltage/temperature channel ADC control MMR is a 16-bit register that is used to configure the V/T-ADC.
When enabling/disabling the voltage/temperature ADC, the voltage attenuator must also be enabled/disabled via
HVCFG1[7].
Description
Voltage/Temperature Channel ADC Enable.
VTEMP Current Source Enable.
Not Used. These bits are reserved for future functionality and should not be modified by user code.
Voltage/Temperature Channel ADC Output Coding.
Not Used. This bit is reserved for future functionality and should be written as 0 by user code.
Voltage/Temperature Channel ADC Input Select.
Voltage/Temperature Channel ADC Reference Select.
Not Used. These bits are reserved for future functionality and should not be written as 0 by user code.
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.
00 = current sources off.
01 = enables 50 μA current source on VTEMP.
10 = enables 50 μA current source on GND_SW.
11 = enables 50 μA current source on both VTEMP and GND_SW.
Set to 1 by user code to configure V/T-ADC output coding as unipolar.
Cleared to 0 by user code to configure V/T-ADC output coding as twos complement.
00 = VBAT/24, AGND. VBAT attenuator selected.
01 = VTEMP, GND_SW. External temperature input selected, conversion result written to ADC2DAT.
10 = internal sensor. Internal temperature sensor input selected, conversion result written to ADC2DAT. The
temperature gradient is 0.33 mV/°C; this is only applicable to the internal temperature sensor.
11 = internal short. Shorted input.
00 = internal, 1.2 V precision reference selected.
01 = external reference inputs (VREF, GND_SW) selected.
10 = external reference inputs divided-by-two (VREF, GND_SW)/2 selected. This allows an external reference up to
REG_AVDD.
11 = (REG_AVDD, AGND)/2 selected for the voltage channel. (REG_AVDD, GND_SW)/2 selected for the temperature
channel.
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