參數(shù)資料
型號： M30302M8L-XXXFP
元件分類： 微控制器/微處理器
英文描述： 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP100
封裝： 14 X 20 MM, PLASTIC, QFP-100
文件頁數(shù)： 99/165頁
文件大?。?/td> 2188K
代理商： M30302M8L-XXXFP
Wait Mode
39
Mitsubishi microcomputers
M16C / 30L Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Table 1.10.3. Port status during wait mode
Pin
Memory expansion mode
Single-chip mode
Microprocessor mode
_______
Address bus, data bus, CS0 to CS3,
Retains status before wait mode
________
BHE
_____
______
________
_________
RD, WR, WRL, WRH
“H”
__________
HLDA,BCLK
“H”
ALE
“H”
Port
Retains status before wait mode
CLKOUT
When fC selected
Valid only in single-chip mode
Does not stop
When f8, f32 selected Valid only in single-chip mode
Does not stop when the WAIT
peripheral function clock stop
bit is “0”.
When the WAIT peripheral
function clock stop bit is “1”,
the status immediately prior
to entering wait mode is main-
tained.
Wait Mode
When a WAIT instruction is executed, the BCLK stops and the microcomputer enters the wait mode. In this
mode, oscillation continues but the BCLK and watchdog timer stop. Writing “1” to the WAIT peripheral
function clock stop bit and executing a WAIT instruction stops the clock being supplied to the internal
peripheral functions, allowing power dissipation to be reduced. However, peripheral function clock fC32
does not stop so that the peripherals using fC32 do not contribute to the power saving. When the MCU
running in low-speed or low power dissipation mode, do not enter WAIT mode with this bit set to “1”. Table
1.10.3 shows the status of the ports in wait mode.
Wait mode is cancelled by a hardware reset or an interrupt. If an interrupt is used to cancel wait mode, that
interrupt must first have been enabled, and the priority level of the interrupt which is not used to cancel must
have been changed to 0. If returning by an interrupt, the clock in which the WAIT instruction executed is set
to BCLK by the microcomputer, and the action is resumed from the interrupt routine. If only a hardware
_______
reset or an NMI interrupt is used to cancel wait mode, change the priority level of all interrupt to 0,then shift
to wait mode.
相關PDF資料
PDF描述
M30302MAP-XXXGP 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP100
M30302GGP-XXXGP 16-BIT, OTPROM, 16 MHz, MICROCONTROLLER, PQFP100
M30304GEP-XXXGP 16-BIT, OTPROM, 16 MHz, MICROCONTROLLER, PQFP100
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相關代理商/技術參數(shù)
參數(shù)描述
M30302M8L-XXXGP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
M30302M8-XXX 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
M30302M8-XXXFP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
M30302M8-XXXGP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
M30302MAL-XXX 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
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