M30621ECGP MITSUBISHI [Mitsubishi Electric Semiconductor], M30621ECGP Datasheet - Page 92

• Manufacturer Part Number: M30621ECGP
• Description: SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
• Manufacturer: MITSUBISHI [Mitsubishi Electric Semiconductor]

Serial I/O
92
Figure 1.14.6. Serial I/O-related registers (3)
UARTi transmit/receive control register 0
UART2 transmit/receive control register 0
b7
b7
b6
b6
b5
b5
b4
b4
b3
b3
b2
b2
b1
b1
b0
b0
Note 1: Set the corresponding port direction register to “0”.
Note 2: The settings of the corresponding port register and port direction register are invalid.
Note 3: Only clock synchronous serial I/O mode and 8-bit UART mode are valid.
Note 4: The setting value of these bits are invalid since CLK2 and CTS2/RTS2 do not have external pin in
Note 5: UART2 clock synchronous serial I/O mode cannot be used in M16C/62 (80-pin version) group.
Note 1: Set the corresponding port direction register to “0”.
Note 2: The settings of the corresponding port register and port direction register are invalid.
UFORM Transfer format
UFORM Transfer format
Nothing is assigned.
In an attempt to write to this bit, write “0”. The value, if read, turns out to be “0”.
CKPOL
TXEPT
CKPOL
symbol
TXEPT
symbol
CLK0
CLK1
CLK0
CLK1
CRS
CRS
CRD
CRD
NCH
Bit
Bit
UiC0(i=0,1)
M16C/62 (80-pin version) group.
Symbol
Symbol
U2C0
select bit (Note 3)
select bit
BRG count source
select bit
BRG count source
select bit
CTS/RTS function
select bit
Transmit register
empty flag
CTS/RTS disable
bit
Data output
select bit
CLK polarity
select bit
CTS/RTS function
select bit
Transmit register
empty flag
CTS/RTS disable
bit
CLK polarity
select bit
Bit name
Bit name
03A4
Address
Address
037C
16
0 : Transmit data is output at falling
1 : Transmit data is output at rising
0 0 : f
0 1 : f
1 0 : f
1 1 : Inhibited
0 : Data present in transmit
1 : No data present in transmit
0 : LSB first
1 : MSB first
0 0 : f
0 1 : f
1 0 : f
1 1 : Inhibited
Valid when bit 4 = “0”
0 : CTS function is selected (Note 1)
1 : RTS function is selected (Note 2)
0 : Data present in transmit
1 : No data present in transmit
0 : TXDi pin is CMOS output
1 : TXDi pin is N-channel
0 : Transmit data is output at falling
1 : Transmit data is output at rising
b1 b0
Valid when bit 4 = “0”
0 : CTS function is selected (Note 1)
1 : RTS function is selected (Note 2)
0 : CTS/RTS function enabled
1 : CTS/RTS function disabled
b1 b0
0 : CTS/RTS function enabled
1 : CTS/RTS function disabled
0 : LSB first
1 : MSB first
, 03AC
register (during transmission)
register (transmission completed)
register (during transmission)
register (transmission completed)
edge of transfer clock and receive
data is input at rising edge
edge of transfer clock and receive
data is input at falling edge
(P6
programmable I/O port)
open-drain output
edge of transfer clock and receive
data is input at rising edge
edge of transfer clock and receive
data is input at falling edge
16
(P7
programmable I/O port)
(During clock synchronous
(During clock synchronous
1
8
32
1
8
32
0
3
is selected
is selected
16
is selected
is selected
and P6
functions
is selected
is selected
serial I/O mode)
serial I/O mode)
When reset
When reset
Function
Function
4
08
08
function as
16
16
b1 b0
Must always be “0”
0 0 : f
0 1 : f
1 0 : f
1 1 : Inhibited
Valid when bit 4 = “0”
0 : CTS function is selected (Note 1)
1 : RTS function is selected (Note 2)
0 : Data present in transmit register
1 : No data present in transmit
0 : CTS/RTS function enabled
1 : CTS/RTS function disabled
0: TXDi pin is CMOS output
1: TXDi pin is N-channel
Must always be “0”
0 0 : f
0 1 : f
1 0 : f
1 1 : Inhibited
Valid when bit 4 = “0”
0 : CTS function is selected (Note 1)
1 : RTS function is selected (Note 2)
0 : Data present in transmit register
1 : No data present in transmit
0 : CTS/RTS function enabled
1 : CTS/RTS function disabled
Must always be “0”
0 : LSB first
1 : MSB first
b1 b0
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
open-drain output
(during transmission)
register (transmission completed)
(P6
programmable I/O port)
(during transmission)
register (transmission completed)
(P7
I/O port)
(During UART mode)
1
8
32
(During UART mode)
1
8
32
0
3
is selected
is selected
is selected
is selected
and P6
functions programmable
is selected
is selected
Function
Function
4
function as
M16C / 62 Group (80-pin)
Mitsubishi microcomputers
R
R
W
W