M30622 Mitsubishi, M30622 Datasheet - Page 143

• Manufacturer Part Number: M30622
• Description: SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
• Manufacturer: Mitsubishi

S I/O3, 4
UART2 Special Mode Register
Figure 1.19.28. S I/O3, 4 block diagram
Figure 1.19.29. S I/O3, 4 control register
S I/O3, 4
S I/O3 and S I/O4 are exclusive clock-synchronous serial I/Os.
In M30623(80-pin package), S
Figure 1.19.28 shows the S I/O3, 4 block diagram, and Figure 1.19.29 shows the S I/O3, 4 control register.
Table 1.19.10 shows the specifications of S I/O3, 4.
(P9
Tentative Specifications REV.A
(P9
P9
(P9
P9
6/
P9
S
5/
2/
Note 1: In M30623(80-pin package), P9
Note 2: i = 3, 4.
S
0/
S I/Oi control register (i = 3, 4) (Note 1)
pecifications in this manual are tentative and subject to change.
7/
b7 b6 b5 b4 b3 b2 b1 b0
CLK
S
1/
CLK
OUT4
S
OUT3
S
IN4
IN3
4
3
)
)
)
ni = A value set in the S I/O transfer rate register i (0363
f
32
f
f
1
8
SMi3
SMi6
SMi2
SMi3
Note 1: Set "1" in bit 2 of the protection register (000A
Note 2: When set “0” to SMi3 (i = 3, 4) and select input - output port, set “1” to SMi6
symbol
SMi5
SMi6
SMi7
SMi0
SMi1
SMi2
SMi3
Nothing is assigned.
In an attempt to write to this bit, write “0”. The value, if read, turns out to be “0”.
IN3
Bit
SMi5 LSB
S I/Oi control register (i = 3, 4).
(i = 3, 4) and select internal clock, or input “H” to P9
is not connected to external pin, so S I/O3 is exclusive transmission.
Symbol
1
Internal synchronous
clock select bit
/S
S
control bit
S I/Oi port select bit
(Note 2)
Transfer direction lect bit
Synchronous clock
select bit (Note 2)
S
set bit
SiC
OUT
OUT
IN3
S I/Oi transmission/reception register (8)
SMi6
i high impedance
i initial value
SMi1
SMi0
is not connected to external pin.
Bit name
Synchronous
0362
circuit
Address
16
143
MSB
, 0366
16
, 0367
16
S I/O counter i (3)
b1 b0
0 : S
1 : S
0 : Input-output port
1 : S
0 0 : Selecting f
0 1 : Selecting f
1 0 : Selecting f
1 1 : Not to be used
0 : LSB first
1 : MSB first
0 : External clock
1 : Internal clock
Effective when SMi3 = 0
0 : L output
1 : H output
1/2
Transfer rate register (8)
When reset
16
OUT
OUT
OUT
).
40
i output
i high impedance
i output, CLK function
16
1/(ni+1)
Description
8
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
16
1
8
32
) in advance to write to the
0
and P9
Data bus
5
.
Mitsubishi microcomputers
S I/Oi
interrupt request
M16C / 62T Group
R
W