m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 318

• Manufacturer Part Number: m37905
• Description: Mitsubishi 16-bit Single-chip Microcomputer 7700 Family / 7900 Series
• Manufacturer: Renesas Electronics Corporation.

Fig. 12.2.4 Structure of A-D control register 2
A-D control register 2 (Address
Note 1: When using pins AN
7 to 4
: They may be either “0” or “1.”
Bit
0
1
2
3
2: Select pins AN
3: When using pin AN
4: When using pin AN
5: When using pin AN
6: When using pin AN
7: Writing to each bit of A-D control register 2 must be performed while the A-D conversion halts, regardless of the A-D
to use pin CTS
operation mode.
used only in the one-shot mode and repeat mode.
Analog input pin select bits 1
Fix these bits to “0000.”
2
0
/RTS
to AN
Bit name
8
9
10
11
, be sure that the D-A
, be sure not to use pin CTS
0
2
, be sure not to use pin R
, be sure not to use pin T
.
7
to AN
at bits 2 to 0 of A-D control register 0 (address 1E
7
, regardless of the A-D operation mode, be sure to fix bit 3 to “0.” Also, pins AN
DB
(Note 1)
16
)
7905 Group User’s Manual Rev.1.0
1
output enable bit (bit 1 at address 96
b3 b2 b1 b0
0
1 0 0 0 : Pin AN
1 0 0 1 : Pin AN
1 0 1 0 : Pin AN
1 0 1 1 : Pin AN
1 1 0 0 : Do not select.
1 1 1 1 : Do not select.
X
X
D
D
2
2
2
/CLK
.
.
: Pins AN
2
.
8
9
10
11
0
is selected.
is selected.
is selected.
is selected.
to AN
Function
7
16
are selected.
).
16
) = “0” (output disabled). Also, be sure not
A-D CONVERTER
b7 b6 b5 b4 b3 b2 b1 b0
12.2 Block description
0 0
(Note 2)
(Note 3)
(Note 4)
(Note 5)
(Note 6)
0
0
At reset
0
0
0
0
0
8
to AN
R/W
RW
RW
RW
RW
RW
11
are
12-7