m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 326
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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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Fig. 12.2.10 Correspondence between port P7, P8 derection registers and A-D converter’s input pins
12.2.5 Port P7 direction register, port P8 direction register
The A-D converter’s input pins are multiplexed with the port P7 and P8 pins. When using these pins as
A-D converter’s input pins, be sure to clear the port P7, P8 direction registers’ bits, corresponding to the
A-D converter’s input pins, in order to set these pins to the input mode. Figure 12.2.10 shows the correspondence
between the port P7, P8 direction registers and the A-D converter’s input pins.
Port P7 direction register (Address 11
Notes 1: When using pin AN
Port P8 direction register (Address 14
Notes 1: When using pin AN
7 to 5
Bit
Bit
0
1
2
3
4
5
6
7
0
1
2
3
2: The pins in ( ) is I/O pins of other internal peripheral devices, which are multiplexed with the corresponding port
2: When using pin AN
3: When using pin AN
4: When using pin AN
5: The pins in ( ) are I/O pins of other internal peripheral devices, which are multiplexed with the corresponding port
P7 pin.
not to use pin CTS
P8 pins.
Pin AN
Pin AN
Pin AN
Pin AN
Nothing is assigned.
Pin AN
Pin AN
Pin AN
Pin AN
Pin AN
Pin AN
Pin AN
Pin AN
8
(Pin CTS
9
10
11
0
1
2
3
4
5
6
7
(Pin CTS
(Pin DA
(Pin R
(Pin T
Bit name
Bit name
2
/RTS
X
X
8
2
9
11
7
D
10
D
/RTS
0
be sure to clear the D-A
, be sure not to use pin CTS
, be sure to clear the D-A
2
, be sure not to use pin T
)
, be sure not to use pin R
/CLK
2
2
)
)
2
/DA
2
.
2
) (Note 2)
1
) (Note 1)
(Note 3)
(Note 4)
(Note 1)
7905 Group User’s Manual Rev.1.0
16
16
)
)
0 : Input mode
1 : Output mode
When using any of these pins as A-D converter’s input
pin, be sure to clear its corresponding bit to “0.”
1
0 : Input mode
1 : Output mode
When using any of these pins as A-D converter’s
input pin, be sure to clear its corresponding bit to
“0.”
output enable bit (bit 1 at address 96
0
X
X
output enable bit (bit 0 at address 96
D
D
2
2
2
/CLK
.
.
2
.
Function
Function
16
) = “0” (output disabled). Also, be sure
A-D CONVERTER
16
) = “0” (output disabled).
b7 b6 b5 b4 b3 b2 b1 b0
b7 b6 b5 b4 b3 b2 b1 b0
12.2 Block description
Undefined
At reset
At reset
0
0
0
0
0
0
0
0
0
0
0
0
R/W
R/W
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
–
12-15
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