参数资料
型号: M306V8FJFP
元件分类: 微控制器/微处理器
英文描述: 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP116
封装: 20 X 20 MM, 0.65 MM PITCH, PLASTIC, LQFP-116
文件页数: 18/77页
文件大小: 2650K
代理商: M306V8FJFP
M306V8FJFP
Rev.1.31
Apr 18, 2005
page 23 of 363
REJ03B0082-0131
RESET
VCC1
RESET
VCC
0V
More than 20 cycles of XIN + td(P-R)
are needed.
Equal to or less
than 0.2VCC1
Equal to or less
than 0.2VCC1
Recommended
operating
voltage
VCC2
VCC3
Note: When starting the power or turning it off, prevent the Vcc2 voltage from exceeding Vcc1 voltage.
Figure 3.1 shows the example reset circuit
Software Reset
When the PM03 bit in the PM0 register is set to “1” (microcomputer reset), the microcomputer has its pins,
CPU, and SFR initialized. Then the program is executed starting from the address indicated by the reset
vector.
Select the main clock for the CPU clock source, and set the PM03 bit to “1” with main clock oscillation
satisfactorily stable.
At software reset, some SFR’s are not initialized. Refer to “SFR”. Also, since the PM01 to PM00 bits in the
PM0 register are not initialized, the processor mode remains unchanged.
Watchdog Timer Reset
Where the PM12 bit in the PM1 register is “1” (reset when watchdog timer underflows), the microcom-
puter initializes its pins, CPU and SFR if the watchdog timer underflows. Then the program is executed
starting from the address indicated by the reset vector.
At watchdog timer reset, some SFR ’s are not initialized. Refer to “SFR”. Also, since the PM01 to PM00
bits in the PM0 register are not initialized, the processor mode remains unchanged.
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