M30622MA-XXXFP RENESAS [Renesas Technology Corp], M30622MA-XXXFP Datasheet - Page 156
M30622MA-XXXFP
Manufacturer Part Number
M30622MA-XXXFP
Description
16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.M30622MA-XXXFP.pdf
(621 pages)
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UART2 Special Mode Register
Table 1.19.9. Features in I
Figure 1.19.26. UART2 special mode register
10
11
UART2 Special Mode Register
1
2
3
4
5
6
7
8
9
The UART2 special mode register (address 0377
Figure 1.19.26 shows the UART2 special mode register.
Note 1: Make the settings given below when I
Note 2: Follow the steps given below to switch from a factor to another.
Note 3: Set an initial value of SDA transmission output when serial I/O is invalid.
Factor of interrupt number 10 (Note 2)
Factor of interrupt number 15 (Note 2)
Factor of interrupt number 16 (Note 2)
UART2 transmission output delay
P7
P7
P7
DMA1 factor at the time when 1 1 0 1 is assigned
to the DMA request factor selection bits
Noise filter width
Reading P7
Initial value of UART2 output
0
1
2
at the time when UART2 is in use
at the time when UART2 is in use
at the time when UART2 is in use
UART2 special mode register
b7 b6 b5 b4 b3 b2 b1 b0
0
1. Disable the interrupt of the corresponding number.
2. Switch from a factor to another.
3. Reset the interrupt request flag of the corresponding number.
4. Set an interrupt level of the corresponding number.
Set 0 1 0 in bits 2, 1, 0 of the UART2 transmission/reception mode register.
Disable the RTS/CTS function. Choose the MSB First function.
1
Function
Note: Nothing but "0" may be written.
ABSCS
Reserved bit
IICM
ABC
ACSE
BBS
LSYN
symbol
SSS
2
C mode
Bit
Symbol
U2SMR
I C mode selection bit
Arbitration lost detecting
flag control bit
Bus collision detect
sampling clock select bit
Transmit start condition
select bit
Bus busy flag
SCLL sync output
enable bit
Auto clear function
select bit of transmit
enable bit
2
2
C mode is in use.
Bit name
UART2 transmission
TxD
UART2 reception
Bus collision detection
UART2 reception
Not delayed
RxD
CLK
15ns
Reading the terminal when 0 is
assigned to the direction register
H level (when 0 is assigned to
the CLK polarity select bit)
2
2
2
(output)
(input)
Address
0377
Normal mode
16
16
0 : Normal mode
1 : I C mode
0 : Update per bit
1 : Update per byte
0 : Disabled
1 : Enabled
Must always be “0”
Must always be “0”
Must always be “0”
(During clock synchronous
0 : STOP condition detected
1 : START condition detected
Always set to “0”
) is used to control UART2 in various ways.
2
serial I/O mode)
When reset
Function
00
16
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Start condition detection or stop
condition detection
SDA (input/output) (Note 3)
Acknowledgment detection (ACK)
50ns
Reading the terminal regardless of the
value of the direction register
The value set in latch P7
selected
0 : Ordinary
1 : Falling edge of RxD2
No acknowledgment detection (NACK)
Acknowledgment detection (ACK)
Delayed
SCL (input/output)
P7
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
2
clock
bus collision
(During UART mode)
Function
I
2
C mode (Note 1)
Mitsubishi microcomputers
M16C / 62 Group
0
when the port is
(Note)
R
W
141
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