參數資料
型號: M38C30MAMXXXFS
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: 24/62頁
文件大?。?/td> 881K
代理商: M38C30MAMXXXFS
24
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
38C3 Group
Data bus
X
CIN
X
IN
Serial I/O
interrupt request
P4
6
latch
“0”
P4
5
latch
“0”
Serial I/O port selection bit
P4
7
latch
Serial I/O counter (3)
Serial I/O shift register (8)
Synchronous
circuit
Internal
system clock
selection bit
Serial I/O port selection bit
“1”
“0”
S
C
S
RDY
output selection bit
External clock
Synchronous clock
selection bit
D
1/8
1/16
1/32
1/64
1/128
1/256
Internal synchronous
clock selection bits
P4
6
/S
CLK1
P4
5
/S
OUT
P4
4
/S
IN
S
RDY
P4
7
/S
RDY
P4
0
latch
“0”
Serial I/O port selection bit
P4
0
/S
CLK2
“1”
“0”
“1”
“0”
“1”
“1”
“1”
SERIAL I/O
The 38C3 group has a built-in 8-bit clock synchronous serial I/O. The
I/O pins of serial I/O also operate as I/O port P4, and their function is
selected by the serial I/O control register 1 (address 0019
16
).
Fig. 22 Block diagram of serial I/O
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