Texas Instruments MSP430x1xx User Manual page 380

ADC12 Registers
MSC Bit 7 Multiple sample and conversion. Valid only for sequence or repeated modes.
0
1
REF2_5V Bit 6 Reference generator voltage. REFON must also be set.
0
1
REFON Bit 5 Reference generator on
0
1
ADC12ON Bit 4 ADC12 on
0
1
ADC12OVIE Bit 3 ADC12MEMx overflow-interrupt enable. The GIE bit must also be set to
enable the interrupt.
0
1
ADC12 Bit 2 ADC12 conversion-time-overflow interrupt enable. The GIE bit must also be
TOVIE
set to enable the interrupt.
0
1
ENC Bit 1 Enable conversion
0
1
ADC12SC Bit 0 Start
ADC12SC and ENC may be set together with one instruction. ADC12SC is
reset automatically.
0
1
17-22
ADC12
The sampling timer requires a rising edge of the SHI signal to trigger
each sample-and-conversion.
The first rising edge of the SHI signal triggers the sampling timer, but
further sample-and-conversions are performed automatically as soon
as the prior conversion is completed.
1.5 V
2.5 V
Reference off
Reference on
ADC12 off
ADC12 on
Overflow interrupt disabled
Overflow interrupt enabled
Conversion time overflow interrupt disabled
Conversion time overflow interrupt enabled
ADC12 disabled
ADC12 enabled
conversion. Software-controlled
No sample-and-conversion-start
Start sample-and-conversion
sample-and-conversion start.