M30245_06 RENESAS [Renesas Technology Corp], M30245_06 Datasheet - Page 234

• Manufacturer Part Number: M30245_06
• Description: RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/20 SERIES
• Manufacturer: RENESAS [Renesas Technology Corp]

M30245 Group
Rev.2.00 Oct 16, 2006
REJ09B0340-0200
Figure 2.9.11. Set-up procedure of single sweep mode
(b15)
b 7
Reading conversion result
S e l e c t i n g S a m p l e a n d h o l d
b 7
b7
S e t t i n g A D c o n t r o l r e g i s t e r 0 a n d A D c o n t r o l r e g i s t e r 1
Setting A/D conversion start flag
b7
Note 1 : Rewrite to analog input pin select bit after changing A/D operation mode.
Note 2 : When f(X
0
1
0
0
0
1 0
0
page 225 of 354
IN
) is over 10 MHz, the f
b 0
1
(b8)
b 0
b0
b 0
b 7
A / D c o n v e r s i o n m e t h o d s e l e c t b i t
A / D c o n v e r s i o n s t a r t f l a g
M u s t a l w a y s b e s e t t o “ 0 ”
I n v a l i d i n s i n g l e s w e e p m o d e
S i n g l e s w e e p m o d e i s s e l e c t e d
( N o t e 1 )
T r i g g e r s e l e c t b i t
A/D conversion start flag
Frequency select bit 0 (Note 2)
1 : W i t h s a m p l e a n d h o l d
A D c o n t r o l r e g i s t e r 2 [ A d d r e s s 0 3 D 4
A D C O N 2
0 : S o f t w a r e t r i g g e r
0 : A/D conversion disabled
1 : A / D c o n v e r s i o n s t a r t e d
0 : f
1 : f
A D c o n t r o l r e g i s t e r 0
[ A d d r e s s 0 3 D 6
A D c o n t r o l r e g i s t e r 0 [ A d d r e s s 0 3 D 6
A D C O N 0
AD
AD
/3 or f
or f
AD
AD
/2 is selected
/4 is selected
AD
1 6
] A D C O N 0
frequency must be under 10 MHz by dividing and set ø
b 0
S t a r t A / D c o n v e r s i o n
Stop A/D conversion
Eight low-order bits of A/D conversion result
During 10-bit mode
During 8-bit mode
Two high-order bits of A/D conversion result
When read, the content is indeterminate
AD register 0
AD register 1
AD register 2
AD register 3
AD register 4
AD register 5
AD register 6
AD register 7
b 7
1 6
0 0
1 6
]
]
1
[Address 03C1
[Address 03C3
[Address 03C5
[Address 03C7
[Address 03C9
[Address 03CB
[Address 03CD
[Address 03CF
0
b0
16
16
16
16
16
16
16
A/D sweep pin select bit (Note 1)
A/D operation mode select bit 1 (Note 1)
8/10-bit mode select bit
Frequency select bit 1 (Note 2)
Vref connect bit
R e s e r v e d b i t
16
b 1 b 0
0 0 : AN
0 1 : AN
1 0 : AN
1 1 : AN
0 (Must always be “0” in Single sweep mode)
0 : 8-bit mode
1 : 10-bit mode
0 : f
1 : f
1 : Vref connected
AD control register 1 [Address 03D7
ADCON1
, 03C0
, 03C2
, 03C4
, 03C6
, 03C8
, 03CA
, 03CE
, 03CC
AD
AD
/2 or f
or f
16
16
16
16
16
16
AD
16
16
0
0
0
0
] AD0
] AD1
] AD2
] AD3
] AD4
, AN
] AD7
] AD5
] AD6
to AN
to AN
to AN
AD
frequency to 10 MHz or lower.
AD
/3 is selected
1
/4 is selected
(2 pins)
3
5
7
(4 pins)
(6 pins)
(8 pins)
2. A/D Converter
16
]