參數(shù)資料
型號： M30100
廠商： Renesas Technology Corp.
英文描述： SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
中文描述： 單片16位CMOS微機
文件頁數(shù)： 104/164頁
文件大?。?/td> 3302K
代理商： M30100
deveopment
Tentative Specifications REV.E1
Serial I/O
Specifications in this manual are tentative and subject to change.
Mitsubishi microcomputers
M30100/M30102 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
103
Symbol
UiMR (i=0,1)
Address
00A0
16
, 00A8
16
When reset
00
16
CKDIR
UARTi transmit/receive mode registers
Internal/external clock
select bit
STPS
PRY
PRYE
SLEP
0 : Internal clock
1 : External clock (Note)
Bit name
Function
Bit symbol
W
R
b7
0
b6 b5
b4
b3
b2
0
b1 b0
0 1
0 (Must always be “0” in clock synchronous serial I/O mode)
SMD0
SMD1
SMD2
Serial I/O mode select bit
0 0 1 : Clock synchronous serial
I/O mode
b2 b1 b0
Invalid in clock synchronous serial I/O mode
AA
AA
AA
AA
AA
AA
Note : Set the corresponding port direction register to “0”.
(When transfer clock output from multiple pins is not selected)
Pin name
TxD
0
(P1
4
)
Method of selection
Function
Serial data output
Serial data input
Transfer clock output
Transfer clock input
RxD
0
(P1
5
)
CLKi (P1
6
, P3
6
) Internal/external clock select bit
(bit 3 at addresses 00A0
16
and
00A8
16
) = “0”
Internal/external clock select bit
(bit 3 at address 00A0
16
and
00A8
16
) = “1”
Ports P1
6
and P3
6
direction
register (bit 6 at address 00E3
16
and 00E7
16
) = “0”
TxD
1
(P3
7
)
RxD
1
(P3
5
)
RxD
1
(P3
7
)
CLKi (P1
6
, P3
6
)
Port P1
5
direction register
(bit 5 at address 00E1
16
)= “0”
Port P3
5
direction register
(bit 5 at address 00E7
16
)= “0”
RxD
1
input pin select bit
(bit 6 at address 00B0
16
)= “1”
Port P3
7
direction register
(bit 7 at address 00E7
16
)= “0”
RxD
1
input pin select bit
(bit 6 at address 00B0
16
)= “0”
RxD
1
input pin select bit
(bit 6 at address 00B0
16
)= “1”
Port P1
4
cannot be used as an I/O port even when
performing only serial data input but not serial data output)
Port P3
7
cannot be used as an I/O port even when
performing only serial data input but not serial data output)
Port P1
5
can be used as an I/O port when performing only
serial data output but not serial data input)
Port P3
5
can be used as an I/O port when performing only
serial data output but not serial data input)
When setting Port P3
7
as RxD
1
, serial data output cannot
be performed.
Port P3
5
can be used as an I/O port.
Remarks
Table 1.15.2. Input/output pin functions in clock synchronous serial I/O mode
Table 1.15.2 lists the functions of the input/output pins during clock synchronous serial I/O mode. This
table shows the pin functions when the transfer clock output from multiple pins is not selected. Note that
for a period from when the UARTi operation mode is selected to when transfer starts, the TxDi pin outputs
an “H”. (If the N-channel open-drain is selected, this pin is in floating state.)
Figure 1.15.6. UARTi transmit/receive mode register in clock synchronous serial I/O mode
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