m5m51016btp Renesas Electronics Corporation., m5m51016btp Datasheet - Page 231

• Manufacturer Part Number: m5m51016btp
• Description: Renesas 16-bit Single-chip Microcomputer M16c Family / M16c/20 Series
• Manufacturer: Renesas Electronics Corporation.

M30245 Group
Rev.2.00 Oct 16, 2006
REJ09B0340-0200
Operation
Figure 2.9.8. Operation timing of repeat mode
2.9.4 Operation of A/D Converter (in repeat mode)
A/D conversion
start flag
AD register i
A/D conversion
In repeat mode, choose functions from those listed in Table 2.9.4. Operations of the circled items are
described below. Figure 2.9.8 shows timing chart, and Figure 2.9.9 shows the set-up procedure.
AD
Table 2.9.4. Choosed functions
(1) Setting the A/D conversion start flag to “1” causes the A/D converter to start operating.
(2) After the first conversion is completed, the content of the successive comparison register
(3) The A/D converter continues operating until the A/D conversion start flag is set to “0” by
Sample & Hold
Operation clock
Resolution
Analog input pin
Trigger for starting
A/D conversion
AD
(conversion result) is transmitted to AD register i. The A/D conversion interrupt request bit
does not go to “1”.
software. The conversion result is transmitted to AD register i every time a conversion is
completed.
N o t e : W h e n
“ 1 ”
“ 0 ”
Item
S t o p
page 222 of 354
C o n v e r s i o n r a t e p e r a n a l o g i n p u t p i n i s 4 9
f o r 1 0 - b i t r e s o l u t i o n .
( 1 ) S t a r t A / D c o n v e r s i o n
A D
S e t t o “ 1 ” b y s o f t w a r e
8 - b i t r e s o l u t i o n : 2 8
1 0 - b i t r e s o l u t i o n : 3 3
f r e q u e n c y i s l e s s t h a n 1 M H z , s a m p l e a n d h o l d f u n c t i o n c a n n o t b e s e l e c t e d .
O
O
O
O
O
Divided-by-4 f
by-3 f
8-bit / 10-bit
One of AN
Software trigger
Trigger by AD
Activated
Not activated
C o n v e r t
AD
/ divided-by-2 f
Set-up
A D
0
A D
pin to AN
c y c l e s
c y c l e s
TRG
AD
/ divided-
7
pin
AD
(2) Conversion result is transferred to the AD register
/ f
A D
AD
8-bit resolution : 28
10-bit resolution : 33
c y c l e s f o r 8 - b i t r e s o l u t i o n a n d 5 9
Result
Cleared to “0” by software
C o n v e r t
AD
AD
cycles
cycles
C o n v e r t
A D
Result
c y c l e s
( 3 ) A / D c o n v e r s i o n
Stop
2. A/D Converter
i s c o m p l e t e