TMPM330 - Keil

Under development
13.4.4 A/D Conversion Modes and A/D Conversion Completion Interrupts
TMPM330 (rev 0.4) 13-19
TMPM330
For A/D conversion, the following four operation modes are supported. For normal A/D
conversion, an operation mode can be selected by setting ADMOD0 to an
appropriate setting. For top-priority A/D conversion, the fixed channel single conversion
mode is automatically selected, irrespective of the ADMOD0 setting.
• Fixed channel single conversion mode
• Channel scan single conversion mode
• Fixed channel repeat conversion mode
• Channel scan repeat conversion mode
(1)Normal A/D conversion
An operation mode is selected with ADMOD0. As A/D conversion
starts, ADMOD0 is set to "1." When specified A/D conversion is completed,
the A/D conversion completion interrupt (INTAD) is generated, and ADMOD0
showing the completion of A/D conversion is set to "1." If ="0,"
returns to "0" concurrently with the setting of EOCF. If is set to "1,"
remains at "1" and A/D conversion continues.
1. Fixed channel single conversion mode
If ADMOD0 is set to "00," A/D conversion is performed in the fixed
channel single conversion mode.
In this mode, A/D conversion is performed once for one channel selected. After A/D
conversion is completed, ADMOD0 is set to "1," ADMOD0 is cleared to
"0," and the interrupt request INTAD is generated. is cleared to "0" upon read.
2. Channel scan single conversion mode
If ADMOD0 is set to "01," A/D conversion is performed in the channel
scan single conversion mode.
In this mode, A/D conversion is performed once for each scan channel selected. After
A/D scan conversion is completed, ADMOD0 is set to "1," ADMOD0 is
cleared to "0," and the interrupt request INTAD is generated. is cleared to "0"
upon read.
Analog/ Digital Converter