m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 341
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m37905
Manufacturer Part Number
m37905
Description
Mitsubishi 16-bit Single-chip Microcomputer 7700 Family / 7900 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.M37905.pdf
(565 pages)
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A-D CONVERTER
12.9 Single sweep mode
Fig. 12.9.2 Initial setting example for related registers in single sweep mode (2)
12-30
(b 15)
A-D register j
b7
When comparator function is selected
Note: Writing to the following must be performed while the A-D converter
Interrupt priority level
b7
halts (in other words, before a trigger is generated); this must be done
independent of the operation mode of the A-D converter.
• Each bit of the A-D control register 0, except writing of “0” to bit 6
• Each bit of the A-D control register 1
• Each bit of the A-D control register 2
• A-D register j (when the comparator function is selected)
• Comparator function select register 0
Especially, when the V
an interval of 1 s or more must be elapsed before occurrence of a trigger.
b7
Port P7 direction register
Setting of A-D conversion start bit to “1.”
b7
1
Continued from preceding Figure 12.9.1.
(b 8)
b0 b7
0
7905 Group User’s Manual Rev.1.0
Operation starts.
Trigger generated
b0
REF
Interrupt priority level select bits
Set the level to one of 1 through 7 when using this interrupt
Set the level to 0 when disabling interrupts.
No interrupt requested
b0
connection select bit is cleared from “1” to “0,”
A-D conversion interrupt control register
(Address 70
b0
AN
AN
AN
AN
AN
AN
AN
AN
A-D conversion start bit
A-D control register 0
(Address 1E
0
1
2
3
4
5
6
7
Port P7 direction register
(Address 11
Clear the bits, corresponding to the
selected analog input pins, to “0.”
b0
A value (comparison value) in the range
from 00
A-D register 0 (Addresses 21
A-D register 1 (Addresses 23
A-D register 2 (Addresses 25
A-D register 3 (Addresses 27
A-D register 4 (Addresses 29
A-D register 5 (Addresses 2B
A-D register 6 (Addresses 2D
A-D register 7 (Addresses 2F
16
16
)
)
16
through FF
When comparator function is not selected
16
is set.
16
16
16
16
16
16
16
16
, 20
, 22
, 24
, 26
, 28
, 2A
, 2E
, 2C
16
16
16
16
16
16
16
16
)
)
)
)
)
)
)
)
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