m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 52
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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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Part Number:
m37905F8CSP
Manufacturer:
MIT
Quantity:
20 000
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Fig. 3.3.2 State of SFR and internal RAM areas immediately after reset (1)
Address
1C
1D
1A
1B
1E
1F
10
11
12
13
14
15
16
17
18
19
C
D
A
B
E
0
F
1
2
3
4
5
6
7
8
9
Notes 1: Do not read from and write to this register.
Access characteristics
State immediately after reset
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
SFR area (Addresses 0
WO
RW
RO
0
1
?
Port P1 direction register
Port P2 direction register
Port P4 direction register
Port P5 direction register
Port P6 direction register
Port P7 direction register
Port P8 direction register
2: Do not write to this register.
: It is possible to read the bit state at reading. The written value becomes valid.
: It is possible to read the bit state at reading. The written value becomes invalid.
: The written value becomes valid. It is impossible to read the bit state.
: Nothing is assigned. It is impossible to read the bit state. The written value becomes invalid.
: “0” immediately after reset.
: “1” immediately after reset.
: Undefined immediately after
reset.
A-D control register 0
A-D control register 1
Register name
Port P1 register
Port P2 register
Port P4 register
Port P5 register
Port P6 register
Port P7 register
Port P8 register
16
7905 Group User’s Manual Rev.1.0
to FF
b7
Access characteristics
RW
RW
16
0
1
?
0
)
: Always “0” at reading.
: Always “1” at reading.
: Always undefined at reading.
: “0” immediately after reset. Fix this bit to “0.”
(Note 1)
(Note 1)
(Note 2)
(Note 2)
(Note 2)
(Note 2)
(Note 2)
(Note 2)
(Note 2)
(Note 2)
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
b0
b7
State immediately after reset
?
?
0
?
0
0
3.3 State of internal area
0
?
0
0
?
?
0
?
0
?
?
0
?
0
0
00
?
?
?
00
00
00
00
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
16
16
16
16
16
0
0
0
0
0
?
0
0
?
0
0
?
RESET
?
0
0
?
0
1
?
?
?
1
0
0
b0
3-7
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