參數(shù)資料
型號： M306H7MG-XXXFP
元件分類： 微控制器/微處理器
英文描述： 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP100
封裝： 14 X 20 MM, 0.65 MM PITCH, PLASTIC, QFP-100
文件頁數(shù)： 112/115頁
文件大小： 3146K
代理商： M306H7MG-XXXFP
Rev.2.10
Oct 25, 2006
Page 96 of 326
REJ03B0152-0210
M306H7MG-XXXFP/MC-XXXFP/FGFP
10. SERIAL I/O
Figure 10.3
U0TB to U2TB Register, U0RB to U2RB Register, and U0BRG to U2BRG Register
b7
(b15)
Symbol
Address
After reset
U0RB
03A716-03A616
Indeterminate
U1RB
03AF16-03AE16
Indeterminate
U2RB
037F16-037E16
Indeterminate
b7
b0
(b8)
b7
b0
UARTi receive buffer register (i=0 to 2)
Function
Bit name
Bit
symbol
0 : No framing error
1 : Framing error found
0 : No parity error
1 : Parity error found
0 : No error
1 : Error found
Note 1: When the UiMR register’s SMD2 to SMD0 bits = “0002” (serial I/O disabled) or the UiC1 register’s RE bit = “0” (reception disabled), all of the SUM,
PER, FER and OER bits are set to “0” (no error). The SUM bit is set to “0” (no error) when all of the PER, FER and OER bits = “0” (no error).
Also, the PER and FER bits are set to “0” by reading the lower byte of the UiRB register.
Note 2: The ABT bit is set to “0” by writing “0” in a program. (Writing “1” has no effect.)
OER
FER
PER
SUM
Overrun error flag (Note 1)
Framing error flag (Note 1)
Parity error flag (Note 1)
Error sum flag (Note 1)
0 : No overrun error
1 : Overrun error found
Nothing is assigned.
In an attempt to write to these bits, write “0”. The value, if read, turns out to be “0”.
Receive data (D7 to D0)
ABT
Arbitration lost detecting
flag (Note 2)
0 : Not detected
1 : Detected
UARTi bit rate generator (i=0 to 2)(Notes 1, 2)
b0
Symbol
Address
After reset
U0BRG
03A116
Indeterminate
U1BRG
03A916
Indeterminate
U2BRG
037916
Indeterminate
Function
Assuming that set value = n, UiBRG divides the count source
by n + 1
0016 to FF16
Setting range
Note 1: Write to this register while serial I/O is neither transmitting nor receiving.
Note 2: Use MOV instruction to write to this register.
b7
b0
(b8)
b7
b0
UARTi transmit buffer register (i=0 to 2)(Note)
Function
Transmit data
Nothing is assigned.
In an attempt to write to these bits, write “0”. The value, if read, turns out to be indeterminate.
Symbol
Address
After reset
U0TB
03A316-03A216
Indeterminate
U1TB
03AB16-03AA16
Indeterminate
U2TB
037B16-037A16
Indeterminate
RW
Note: Use MOV instruction to write to this register.
WO
RW
RO
(b7-b0)
(b10-b9)
RW
WO
Receive data (D8)
RO
(b8)
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