Renesas PCA4738L-64A Technical Information Seite 32
- Seite / 73
- Inhaltsverzeichnis
- LESEZEICHEN
Bewertet. / 5. Basierend auf Kundenbewertungen
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
3825 Group
29
(2) Asynchronous Serial I/O (UART) Mode
Clock asynchronous serial I/O mode (UART) can be selected by
clearing the serial I/O mode selection bit of the serial I/O control
register to “0”.
Eight serial data transfer formats can be selected, and the transfer
formats used by a transmitter and receiver must be identical.
The transmit and receive shift registers each have a buffer regis-
ter, but the two buffers have the same address in memory. Since
the shift register cannot be written to or read from directly, transmit
data is written to the transmit buffer, and receive data is read from
the receive buffer.
The transmit buffer can also hold the next data to be transmitted,
and the receive buffer register can hold a character while the next
character is being received.
Fig. 25 Block diagram of UART serial I/O
Fig. 26 Operation of UART serial I/O function
f(X
IN
)
1
/
4
O
E
P
E
F
E
1/16
1/16
D
ata
b
us
R
e
c
e
i
v
e
b
u
f
f
e
r
r
e
g
i
s
t
e
r
A
d
d
r
e
s
s
0
0
1
8
1
6
R
e
c
e
i
v
e
s
h
i
f
t
r
e
g
i
s
t
e
r
R
e
c
e
i
v
e
b
u
f
f
e
r
f
u
l
l
f
l
a
g
(
R
B
F
)
R
e
c
e
i
v
e
i
n
t
e
r
r
u
p
t
r
e
q
u
e
s
t
(
R
I
)
B
au
d
rate generator
F
requency
di
v
i
s
i
on rat
i
o 1/
(
n+1
)
Add
ress 001
C
16
ST/SP/PA generator
Transmit buffer register
D
ata
b
us
T
r
a
n
s
m
i
t
s
h
i
f
t
r
e
g
i
s
t
e
r
Add
ress 001816
T
ransm
i
t s
hif
t reg
i
ster s
hif
t comp
l
et
i
on
fl
ag
(TSC)
T
ransm
i
t
b
u
ff
er empty
fl
ag
(TBE)
T
ransm
i
t
i
nterrupt request
(TI)
Add
ress 001916
S
T
d
e
t
e
c
t
o
r
S
P
d
e
t
e
c
t
o
r
U
A
R
T
c
o
n
t
r
o
l
r
e
g
i
s
t
e
r
Add
ress 001
B
16
C
h
a
r
a
c
t
e
r
l
e
n
g
t
h
s
e
l
e
c
t
i
o
n
b
i
t
A
d
d
r
e
s
s
0
0
1
A
1
6
B
R
G
c
o
u
n
t
s
o
u
r
c
e
s
e
l
e
c
t
i
o
n
b
i
t
T
ransm
i
t
i
nterrupt source se
l
ect
i
on
bit
S
er
i
a
l
I
/
O
sync
h
ron
i
zat
i
on c
l
oc
k
se
l
ect
i
on
bi
t
C
l
o
c
k
c
o
n
t
r
o
l
c
i
r
c
u
i
t
C
h
a
r
a
c
t
e
r
l
e
n
g
t
h
s
e
l
e
c
t
i
o
n
b
i
t
7
b
i
t
s
8
b
i
t
s
S
e
r
i
a
l
I
/
O
c
o
n
t
r
o
l
r
e
g
i
s
t
e
r
P
4
6/
S
C
L
K
S
er
i
a
l
I
/
O
status reg
i
ster
P
44/
R
X
D
P
45/
T
X
D
(
f
(
X
C
I
N
)
i
n
l
o
w
-
s
p
e
e
d
m
o
d
e
)
T
S
C
=
0
T
B
E
=
1
RBF
=0
T
B
E
=
0
TBE
=0
R
B
F
=
1
R
B
F
=
1
S
T
D
0
D
1
S
P
D
0
D
1
S
T
SP
TBE
=1
TSC=1
✽
ST
D
0
D
1
SP
D
0
D
1
ST
S
P
T
r
a
n
s
m
i
t
b
u
f
f
e
r
w
r
i
t
e
s
i
g
n
a
l
✽
Generated at 2nd bit in 2-stop-bit mode
1
s
t
a
r
t
b
i
t
7
o
r
8
d
a
t
a
b
i
t
s
1
o
r
0
p
a
r
i
t
y
b
i
t
1
o
r
2
s
t
o
p
b
i
t
(
s
)
1
:
E
r
r
o
r
f
l
a
g
d
e
t
e
c
t
i
o
n
o
c
c
u
r
s
a
t
t
h
e
s
a
m
e
t
i
m
e
t
h
a
t
t
h
e
R
B
F
f
l
a
g
b
e
c
o
m
e
s
“
1
”
(
a
t
1
s
t
s
t
o
p
b
i
t
,
d
u
r
i
n
g
r
e
c
e
p
t
i
o
n
)
.
2
:
T
h
e
t
r
a
n
s
m
i
t
i
n
t
e
r
r
u
p
t
(
T
I
)
c
a
n
b
e
g
e
n
e
r
a
t
e
d
t
o
o
c
c
u
r
w
h
e
n
e
i
t
h
e
r
t
h
e
T
B
E
o
r
T
S
C
f
l
a
g
b
e
c
o
m
e
s
“
1
”
,
d
e
p
e
n
d
i
n
g
o
n
t
h
e
s
e
t
t
i
n
g
o
f
t
h
e
t
r
a
n
s
m
i
t
i
n
t
e
r
r
u
p
t
s
o
u
r
c
e
s
e
l
e
c
t
i
o
n
b
i
t
(
T
I
C
)
o
f
t
h
e
s
e
r
i
a
l
I
/
O
c
o
n
t
r
o
l
r
e
g
i
s
t
e
r
.
3
:
T
h
e
r
e
c
e
i
v
e
i
n
t
e
r
r
u
p
t
(
R
I
)
i
s
s
e
t
w
h
e
n
t
h
e
R
B
F
f
l
a
g
b
e
c
o
m
e
s
“
1
”
.
4
:
A
f
t
e
r
d
a
t
a
i
s
w
r
i
t
t
e
n
t
o
t
h
e
t
r
a
n
s
m
i
t
b
u
f
f
e
r
r
e
g
i
s
t
e
r
w
h
e
n
T
S
C
=
1
,
0
.
5
t
o
1
.
5
c
y
c
l
e
s
o
f
t
h
e
d
a
t
a
s
h
i
f
t
c
y
c
l
e
i
s
n
e
c
e
s
s
a
r
y
u
n
t
i
l
c
h
a
n
g
i
n
g
t
o
T
S
C
=
0
.
N
o
t
e
s
S
er
i
a
l
output
T
X
D
S
e
r
i
a
l
i
n
p
u
t
R
X
D
R
e
c
e
i
v
e
b
u
f
f
e
r
r
e
a
d
s
i
g
n
a
l
T
r
a
n
s
m
i
t
o
r
r
e
c
e
i
v
e
c
l
o
c
k
- To our customers 1
- Renesas Technology Corp 3
- Customer Support Dept 3
- April 1, 2003 3
- To all our customers 3
- 3825 Group 10
- 16 to 00FF16 are called the 18
- 16 to FFFF16 are called the 18
- 5/TXD pin 33
- 7/AN7–P60/ 35
- IN as the internal clock 35
- CC(min.) and 43
- 16 (high-order byte) and ad 43
- CC(min.) 43
- RDY output enable bit to 48
- XD pin after 48
- IN frequency 48
- 0 of port bock diagram 73
Verwandte Produkte und Handbücher für Prozessoren Renesas PCA4738L-64A
Prozessoren Renesas PCA4738S-42A Spezifikationen
(55 Seiten)
(55 Seiten)
Prozessoren Renesas QFP-144 Bedienungsanleitung
(16 Seiten)
(16 Seiten)
© 2020, manymanuals.de. Alle Rechte vorbehalten. | 0.094 s |
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Kommentare zu diesen Handbüchern