M30621ECGP MITSUBISHI [Mitsubishi Electric Semiconductor], M30621ECGP Datasheet - Page 94

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

Serial I/O
94
Figure 1.14.8. Serial I/O-related registers (5)
UART2 special mode register
b7 b6 b5 b4 b3 b2 b1 b0
UART transmit/receive control register 2
0
b7
b6
b5
b4
b3
b2
b1
b0
Note 1: Nothing but "0" may be written.
Note 2: UART2 clock synchronous serial I/O mode cannot be used in M16C/62 (80-pin version) group.
Note: When using multiple pins to output the transfer clock, the following requirements must be met:
ABSCS
CLKMD0
CLKMD1
Reserved bit
ACSE
U0RRM
U1RRM
symbol
SSS
Nothing is assigned.
In an attempt to write to this bit, write “0”. The value, if read, turns out to be indeterminate.
LSYN
symbol
U0IRS
U1IRS
RCSP
IICM
ABC
BBS
Bit
Bit
Symbol
U2SMR
Symbol
• UART1 internal/external clock select bit (bit 3 at address 03A8
UCON
IIC mode selection bit
Arbitration lost detecting
flag control bit
Transmit start condition
select bit
Bus busy flag
SCLL sync output
enable bit
Bus collision detect
sampling
clock select bit
Auto clear function
select bit of transmit
enable bit
UART0 transmit
interrupt cause select bit
UART1 transmit
interrupt cause select bit
Separate CTS/RTS bit
UART0 continuous
receive mode enable bit
UART1 continuous
receive mode enable bit
CLK/CLKS select bit 0
CLK/CLKS select
bit 1 (Note)
name
name
Bit
Bit
Address
Address
0377
03B0
16
16
0 : Normal mode
1 : IIC mode
0 : Update per bit
1 : Update per byte
0 : STOP condition detected
1 : START condition detected
(During clock synchronous
0 : Disabled
1 : Enabled
Must always be “0”
Must always be “0”
Must always be “0”
Always set to “0”
0 :
1 : Transmission completed
0 :
1 : Transmission completed
0 : Continuous receive
1 : Continuous receive
0 : Continuous receive
1 : Continuous receive
Valid when bit 5 = “1”
0 : Clock output to CLK1
1 : Clock output to CLKS1
0 : Normal mode
1 : Transfer clock output
0 : CTS/RTS shared pin
1 : CTS/RTS separated
(During clock synchronous
Transmit buffer empty (Tl = 1)
Transmit buffer empty (Tl = 1)
(CLK output is CLK1 only)
from multiple pins
function selected
(TXEPT = 1)
(TXEPT = 1)
mode disabled
mode enable
mode disabled
mode enabled
serial I/O mode)
serial I/O mode)
When reset
When reset
X0000000
Function
Function
00
16
2
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
0 : Ordinary
1 : Falling edge of RxD2
0 : Rising edge of transfer
1 : Underflow signal of timer A0
Must always be “0”
Must always be “0”
Must always be “0”
Must always be “0”
0 : No auto clear function
1 : Auto clear at occurrence of
Invalid
0 : CTS/RTS shared pin
1 : CTS/RTS separated
0 : Transmit buffer empty (Tl = 1)
1 : Transmission completed
0 : Transmit buffer empty (Tl = 1)
1 : Transmission completed
Invalid
Invalid
Must always be “0”
clock
bus collision
(TXEPT = 1)
(TXEPT = 1)
(During UART mode)
(During UART mode)
16
) = “0”.
M16C / 62 Group (80-pin)
Function
Function
Mitsubishi microcomputers
R
(Note)
R
W
W