參數(shù)資料
型號(hào): μPD789415
廠商: NEC Corp.
英文描述: 8 Bit Single Chip Microcontrollers(8位單片微控制器)
中文描述: 8位單片機(jī)微控制器(8位單片微控制器)
文件頁數(shù): 68/126頁
文件大小: 590K
代理商: ΜPD789415
68
μ
PD789415, 789416, 789417
Table 5-13. Serial Interface Channel 0 Operation Mode Settings
(1) Operation stopped mode
ASIM
CSIM0
TXE
RXE CSIE0 DIR0 CSCK
0
0
0
×
×
×
Note
1
×
Note
1
×
Note
1
×
Note
1
×
Note
1
×
Note
1
P22
P21
P20
Other settings
Not to be specified
(2) Three-wire serial I/O mode
ASIM
CSIM0
TXE
RXE CSIE0 DIR0 CSCK
0
0
1
0
0
1
Note
2
×
Note
2
0
1
1
×
MSB
External
clock
SI0
Note2
SO0
(CMOS
output)
SCK0
input
1
0
1
Internal
clock
SCK0
output
1
1
0
1
×
LSB
External
clock
SCK0
input
1
0
1
Internal
clock
SCK0
output
Other settings
Not to be specified
(3) Asynchronous serial interface mode
ASIM
CSIM0
TXE
RXE CSIE0 DIR0 CSCK
1
0
0
0
0
×
Note
1
×
Note
1
0
1
1
×
LSB
External
clock
P22
TxD
(CMOS
output)
ASCK
input
×
Note
1
×
Note
1
Internal
clock
P20
0
1
0
0
0
1
×
×
Note
1
×
Note
1
1
×
External
clock
RxD
P21
ASCK
input
×
Note
1
×
Note
1
Internal
clock
P20
1
1
0
0
0
1
×
0
1
1
×
External
clock
TxD
(CMOS
output)
ASCK
input
×
Note
1
×
Note
1
Internal
clock
P20
Other settings
Not to be specified
Notes 1.
These pins can be used for port functions.
When only transmission is used, these pins can be used as P22 (CMOS input/output).
Remark
×
: Don’t care.
2.
First
bit
P20
PM20
P21
PM21
P22
PM22
P22/SI/RxD
pin function
Shift
clock
P21/SO/TxD
pin function
P20/SCK/
ASCK pin
function
P21/SO/TxD
pin function
P21/SO/TxD
pin function
Shift
clock
Shift
clock
P20/SCK/
ASCK pin
function
P20/SCK/
ASCK pin
function
P20
P20
PM20
PM20
P21
P21
PM21
PM21
P22
P22
PM22
PM22
First
bit
First
bit
P22/SI/RxD
pin function
P22/SI/RxD
pin function
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