m5m51016btp Renesas Electronics Corporation., m5m51016btp Datasheet - Page 235

• 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 2.9.12. Operation timing of repeat sweep 0 mode
2.9.6 Operation of A/D Converter (in repeat sweep mode 0)
In repeat sweep 0 mode, choose functions from those listed in Table 2.9.6. Operations of the circled items
are described below. Figure 2.9.12 shows timing chart, and Figure 2.9.13 shows the set-up procedure.
A / D
c o n v e r s i o n
s t a r t f l a g
A D r e g i s t e r 0
A D r e g i s t e r 1
A D r e g i s t e r i
A D
Table 2.9.6. Choosed functions
(1) Setting the A/D conversion start flag to “1” causes the A/D converter to start the conversion on
(2) After the A/D conversion of voltage input to the AN
(3) The A/D converter converts all pins selected by the user. The conversion result is transmitted
(4) The A/D converter continues operating until the A/D conversion start flag is set to “0” by
Operation clock
R e s o l u t i o n
Analog input pin
“ 1 ”
“ 0 ”
voltage input to the AN
successive comparison register (conversion result) is transmitted to AD register 0.
to AD register i corresponding to each pin every time A/D conversion on the pin is completed.
The A/D conversion interrupt request bit does not go to “1”.
software.
( 1 ) S t a r t A / D c o n v e r s i o n
S e t t o “ 1 ” b y s o f t w a r e .
N o t e : W h e n
I t e m
page 226 of 354
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
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
AD
A D
f r e q u e n c y i s l e s s t h a n 1 M H
O
O
O
Divided-by-4 f
by-3 f
/ f
8 - b i t / 1 0 - b i t
AN
to AN
(6 pins) / AN
A D
AD
A D
0
0
c y c l e s
c y c l e s
and AN
AD
pin.
3
(4 pins) / AN
Set-up
/ divided-by-2 f
(2) AN1 conversion begins after AN0
1
0
AD
(2 pins) / AN
to AN
conversion is complete
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
/ divided-
Z
Result
, 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 .
0
7
to AN
(8 pins)
A D
AD
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
0
5
Trigger for starting
A/D conversion
S a m p l e & H o l d
A D
A D
c y c l e s
c y c l e s
Item
0
pin is completed, the content of the
(3) Consecutive conversion
Result
A D
O
O
c y c l e s f o r 1 0 - b i t r e s o l u t i o n .
C l e a r e d t o “ 0 ” b y s o f t w a r e
Software trigger
T r i g g e r b y A D
N o t a c t i v a t e d
Activated
S e t - u p
R e s u l t
( 4 )
2. A/D Converter
A/D conversion
is complete
T R G