參數(shù)資料
型號： M30625MGA-XXXGP
元件分類： 微控制器/微處理器
英文描述： 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP80
封裝： 14 X 14 MM, 0.65 MM PITCH, PLASTIC, QFP-80
文件頁數(shù)： 34/143頁
文件大?。?/td> 3168K
代理商： M30625MGA-XXXGP
S I/O3, 4
Mitsubishi microcomputers
M16C / 62A Group (80-pin)
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
126
Functions for setting an SOUTi initial value
When using an external clock for the transfer clock, the SOUTi pin output level during a non-transfer
time can be set to the high or the low state. Figure 1.14.32 shows the timing chart for setting an SOUTi
initial value and how to set it.
Figure 1.14.32. Timing chart for setting SOUTi’s initial value and how to set it
S I/Oi operation timing
Figure 1.14.33 shows the S I/Oi operation timing
D7
D0
D1
D2
D3
D4
D5
D6
(i= 3, 4)
Hiz
(i= 3, 4)
1.5 cycle (max)
SI/Oi internal clock
Transfer clock
(Note 1)
Signal written to the
S I/Oi transmit/receive
register
S I/Oi output SOUTi
S I/Oi input SINi
SI/Oi interrupt request
bit
Note2
Note 1: With the internal clock selected for the transfer clock, the frequency dividing ratio can be selected using bits 0 and 1 of the S I/Oi control register.
(i=3,4) (No frequency division, 8-division frequency, 32-division frequency.)
Note 2: With the internal clock selected for the transfer clock, the SOUTi pin becomes to the high-impedance state after the transfer finishes.
Note 3: Shown above is the case where the SOUTi (i = 3, 4) port select bit ="1".
"H"
"L"
"H"
"L"
"H"
"L"
"H"
"L"
"H"
"L"
"1"
"0"
Figure 1.14.33. S I/Oi operation timing chart
S I/Oi port select bit SMi3 = 0
SOUTi initial value select bit
SMi7 = 1
(SOUTi: Internal
“H” level)
S I/Oi port select bit
SMi3 = 0
1
(Port select: Normal port
SOUTi)
SOUTi terminal = “H” output
Signal written to the S I/Oi register
=“L”
“H”
“L”
(Falling edge)
SOUTi terminal = Outputting
stored data in the S I/Oi transmission/
reception register
Signal written to the S I/Oi
transmit/receive register
SOUTi (internal)
SOUTi's initial value
set bit (SMi7)
SOUTi terminal output
S I/Oi port select bit
(SMi3)
Setting the SOUTi
initial value to H
Port selection
(normal port
SOUTi)
D0
(i = 3, 4)
Initial value = “H” (Note)
Port output
D0
(Example) With “H” selected for SOUTi:
Note: The set value is output only when the external clock has been selected. When
initializing SOUTi, make sure the CLKi pin input is held “H” level.
If the internal clock has been selected or if SOUT output disable has been set,
this output goes to the high-impedance state.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M30625MGM-XXXGP 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
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