UPD78F1502AGK-GAK-AX Datasheet, PDF (410/1031 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcontrollers

78K0R/Lx3
CHAPTER 10 12-BIT A/D CONVERTER (μ PD78F150xA),
10-BIT A/D CONVERTER (μ PD78F151xA)
Figure 10-7. A/D Converter Sampling and A/D Conversion Timing
ADCS ← 1 or ADS rewrite
ADCS
Sampling
timing
INTAD
Wait period SAR
clear
Sampling
Successive conversion Transfer SAR
to ADCR, clear
INTAD
generation
Sampling
Conversion time
Conversion time
(3) A/D converter mode register 1 (ADM1)
This register sets the A/D conversion start trigger.
ADM1 can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation clears this register to 00H.
Figure 10-8. Format of A/D Converter Mode Register 1 (ADM1)
Address: FFF32H After reset: 00H R/W
Symbol
<7>
6
5
4
3
2
1
ADM1 ADTMD
0
0
0
0
0
0
0
ADTRS
ADTMD
0
1
A/D trigger mode selection
Software trigger mode
Timer trigger mode (hardware trigger mode)
ADTRS
0
1
INTTM02
INTTM03
Timer trigger signal selection
Caution Rewriting ADM1 during A/D conversion is prohibited. Rewrite it when conversion operation is
stopped (ADCS = 0).
R01UH0004EJ0501 Rev.5.01
394
Jun 20, 2011