M306H2MC-XXXFP Datasheet, PDF (96/210 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with DATA ACQUISITION CONTROLLER

MITSUBISHI MICROCOMPUTERS
M306H2MC-XXXFP
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
with DATA ACQUISITION CONTROLLER
UARTi transmit buffer register
(b15)
b7
(b8)
b0 b7
UARTi receive buffer register
(b15)
b7
(b8)
b0 b7
UARTi bit rate generator
b7
b0
Symbol
b0
U0TB
U1TB
U2TB
Address
03A316, 03A216
03AB16, 03AA16
037B16, 037A16
When reset
Indeterminate
Indeterminate
Indeterminate
Transmit data
Function
Nothing is assigned.
In an attempt to write to these bits, write “0”. The value, if read, turn out to be indeterminate.
Note: Use MOV instruction to write this register.
RW
Symbol
Address
When reset
b0
U0RB 03A716, 03A616
Indeterminate
U1RB 03AF16, 03AE16 Indeterminate
U2RB 037F16, 037E16
Indeterminate
Bit
symbol
Bit name
Function
(During clock synchronous
serial I/O mode)
Receive data
Function
(During UART mode)
Receive data
RW
Nothing is assigned.
In an attempt to write to these bits, write “0”. The value, if read, turns out to be “0”.
ABT
OER
Arbitration lost detecting
flag (Note 2)
0 : Not detected
1 : Detected
Overrun error flag (Note 1) 0 : No overrun error
1 : Overrun error found
Invalid
0 : No overrun error
1 : Overrun error found
FER Framing error flag (Note 1) Invalid
0 : No framing error
1 : Framing error found
PER Parity error flag (Note 1) Invalid
0 : No parity error
1 : Parity error found
SUM Error sum flag (Note 1) Invalid
0 : No error
1 : Error found
Note 1: Bits 15 through 12 are set to “0” when the serial I/O mode select bit (bits 2 to 0 at addresses 03A0 16,
03A816 and 037816) are set to “0002” or the receive enable bit is set to “0”.
(Bit 15 is set to “0” when bits 14 to 12 all are set to “0”.) Bits 14 and 13 are also set to “0” when the
lower byte of the UARTi receive buffer register (addresses 03A6 16, 03AE16 and 037E16) is read out.
Note 2: Arbitration lost detecting flag is allocated to U2RB and noting but “0” may be written. Nothing is
assigned in bit 11 of U0RB and U1RB. These bits can neither be set or reset. When read, the value
of this bit is “0”.
Symbol
U0BRG
U1BRG
U2BRG
Address
03A116
03A916
037916
Function
When reset
Indeterminate
Indeterminate
Indeterminate
Assuming that set value = n, BRGi divides the count source by
n+1
Note 1: Write a value to the register while transmit/receive stop.
Note 2: Use MOV instruction to write to this register.
Values that can be set
0016 to FF16
RW
Figure 2.11.4 UARTi I/O-related registers (1)
Rev. 1.0
95