參數資料
型號: M37477M4
廠商: Mitsubishi Electric Corporation
英文描述: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
中文描述: 單芯片8位CMOS微機
文件頁數: 27/47頁
文件大?。?/td> 669K
代理商: M37477M4
27
MITSUBISHI MICROCOMPUTERS
7477/7478 GROUP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Fig. 20 Block diagram of ports P1
4
– P1
7
Direction register
Port latch
Tr6
Port P1
7
Data bus
SIOE
SIOM
SRDY
S
RDY
Tr7
Port P1
6
Data bus
SIOM
SIOE
CLK output
SCS
SIOE
Tr8
Port P1
5
Data bus
SIOE
TE
T
X
D
Tr9
Port P1
4
Data bus
SIOE
RE
R
X
D
Data bus
Tr6 to Tr9 are pull-up transistors.
Ports P1
4
– P1
7
CLK input
Direction register
Port latch
Direction register
Port latch
Direction register
Port latch
Pull-up control
register
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