參數(shù)資料
型號： M30833FJFP
元件分類： 微控制器/微處理器
英文描述： 32-BIT, FLASH, 30 MHz, MICROCONTROLLER, PQFP100
封裝： PLASTIC, QFP-100
文件頁數(shù)： 77/159頁
文件大?。?/td> 3896K
代理商： M30833FJFP
Under
development
Preliminary Specifications REV.1.02
Specifications in this manual are tentative and subject to change.
Mitsubishi Microcomputers
M32C/83 group
SINGLE-CHIP 16/32-BIT CMOS MICROCOMPUTER
Reset
23
Reset
Hardware reset and software reset can be used to reset a microcomputer.
Hardware Reset
1. When the Power Supply is Stable
___________
The RESET pin is reset when the supply voltage meets recommended performance conditions and "L" is
___________
____________
input to the RESET pin (see Table 1.4.1). The RESET pin should be in "H" after 20 or more clock cycles
____________
are input to the XIN pin with the RESET pin in "L". The CPU and SFR are reset to run programs from an
address indicated by a reset vector.
___________
Internal RAM is not reset after reset. When the RESET pin is set to "L" while writing to the internal RAM,
the internal RAM becomes indeterminate.
2. When the Power Supply is On
___________
The RESET pin is reset when the supply voltage for the VCC pin meet the recommanded performance
requirement. (See Table 1.4.1.)
Main clock ocsillation is stable and 20 or more clocks are input to the XIN pin. The CPU and SFR are reset
___________
when the RESET pin level changes "L" to "H". (Internal RAM is indeterminate.) Programs run from an
address indicated.
Software Reset
When the PM03 bit in the PM0 register is set to "1" (microcomputer reset), pins, the CPU and SFR are reset
as well as a hardware reset. Programs run from an address indicated by a reset vector.
At software reset, processor mode is not exited and bus-associated registers are not changed.
The main clock should be selected as the CPU clock to set the PM03 bit to "1" when main clock oscillation
is stable enough.
Figure 1.4.1 shows a reset sequence. Figure 1.4.3 shows the CPU register conditions after reset. Refer to
the section "SFR" about SFR conditions after reset.
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