M37733MHBXXXFP Datasheet, PDF (31/89 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

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MITSUBISHI MICROCOMPUTERS
M37733MHBXXXFP
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
The interrupt vector and the interrupt control register are common to
the A-D conversion interrupt and UART2 transmit/receive interrupt.
It is switched by a selection of UART2 function as shown in Figure 37
and Table 5.
Figure 38 shows the connections of receiver/transmitter.
Figures 39 and 40 show the bit configuration of the UARTi transmit/
receive control register.
Each communication method is described below.
Receiver block diagram
Data bus (odd)
Data bus (even)
0
0
0
0
0
0
0
RxDi
2 stop bit
Stop
bit
Stop
bit
1 stop bit
Parity ^{7 bit}
8 bit
Parity ^{9 bit}
bit _No
Parity
Synchronous
Bit converter (Note)
D8
D7
D6
D5
D4
D3
D2
D1
8 bit
9 bit
9 bit
Synchronous
7 bit
8 bit
7 bit
Synchronous
D0
Receive buffer
register
Receive
register
Transmitter block diagram
Data bus (odd)
Data bus (even)
D8
D7
D6
D5
2 stop bit
Parity ^{7 bit}
8 bit
7 bit
8 bit
9 bit
9 bit
Synchro- Synchronous
nous
“0”
Stop Stop
bit
bit
Parity ^{9 bit}
bit _No
Parity
8 bit
7 bit
1 stop bit
“0” ^Synchronous
Note. U AR T2 does not include the bit converter.
Bit converter (Note)
D4
D3
D2
D1
D0
Transmission register
Transmission
buffer register
TxDi
Fig. 38 Receiver and transmitter block diagram
Table 5. Differences between UART0, UART1 and UART2
Communication
method
CTS input/
RTS output
Interrupt
Selection of data
output, CLK polarity,
transfer format
Multiple clocks
output
Sleep function
UART0
Selection of clock
synchronous or
asynchronous (UART)
Both CTS input
and RTS output
Transmit and receive Available
(2 systems)
Available
Available
UART1
Selection of clock
synchronous or
asynchronous (UART)
Both CTS input
and RTS output
Transmit and receive Available
(2 systems)
Nothing
Available
UART2
Selection of clock
synchronous or
asynchronous (UART)
Only CTS input
Transmit/receive
(1 system)
(Note)
Nothing
Nothing
Nothing
Note. The interrupt vector and the interrupt control register are common to the A-D conversion interrupt and UART2 transmit/receive interrupt.
It is switched by a selection of UART2 function.
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