參數(shù)資料
型號: M37531
廠商: Mitsubishi Electric Corporation
英文描述: Single Chip 8 Bits CMOS Microcomputer(8位單片機)
中文描述: 單芯片的CMOS 8位單片機(8位單片機)
文件頁數(shù): 14/64頁
文件大?。?/td> 631K
代理商: M37531
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
7531 Group
MITSUBISHI MICROCOMPUTERS
14
Fig. 15 Block diagram of ports (1)
(5) Port P1
3
Data bus
Signals during the S
DATA
output action
S
DATA
pin selection bit
Serial I/O2 output
P1
,P1
,P1
input
level selection bit
Serial I/O2 input
S
DATA
pin
selection bit
Direction
register
Port latch
(1) Port P0
Data bus
Pull-up
control bit i (i=0 to 3)
Data bus
Serial I/O1 enable bit (b7)
Serial I/O1 enable bit (b6)
Receive enable bit
Serial I/O1 input
(2) Port P1
0
Direction
register
Port latch
P1
0
,P1
2
,P1
3
input
level selection bit
Direction
register
Port latch
To key input interrupt
generating circuit
(3) Port P1
1
Data bus
Serial I/O1 output
P1
1
/TxD P-channel output disable bit
Direction
register
Port latch
(4) Port P1
2
Data bus
Serial I/O2 clock output
S
CLK
pin selection bit
Direction
register
Serial I/O2 clock input
Port latch
P1
0
,P1
2
,P1
3
input
level selection bit
(6) Port P1
4
Data bus
Timer output
Pulse output mode
CNTR
0
interrupt input
Direction
register
Port latch
P1
0
, P1
2
, P1
3
, P3
6
, and P3
7
input level are switched to the CMOS/TTL level by the port P1P3 control register.
When the TTL level is selected, there is no hysteresis characteristics.
Serial I/O1 enable bit (b7)
Serial I/O1 enable bit (b6)
Transmit enable bit
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