參數(shù)資料
型號(hào)： MB91F647APMC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, FLASH, 60 MHz, RISC MICROCONTROLLER, PQFP176
封裝： 24 X 24 MM, 1.70 MM HEIGHT, 0.50 MM PITCH, PLASTIC, LQFP-176
文件頁數(shù)： 83/136頁
文件大?。?/td> 4055K
代理商： MB91F647APMC
MB91645A Series
50
DS07-16911-1E
Notes on power-on
To ensure that the oscillator have stabilized immediately after the power is turned on, keep an “L” level input
connected to the INIT pin for the duration of the oscillator start time of the oscillator + the main oscillator
stabilization wait time.
Turn power on/off in the following order
Turning on : VDDI
→ VCC → AVCC → AVRH
Turning off : AVRH
→ AVCC → VCC → VDDI
Release the reset (INIT pin “L” level to “H” level) after the power supply has stabilized.
Caution on Operations during PLL Clock Mode
On this microcontroller, if in case the crystal oscillator breaks off or an external reference clock input stops while
the PLL clock mode is selected, a self-oscillator circuit contained in the PLL may continue its operation at its
self-running frequency.
However, Fujitsu Microelectronics will not guarantee results of operations if such failure occurs.
Note: Changes of PLL clock specification from MB91645 series
MB91645A series has been modified, and specifications of the PLL macro oscillation clock frequency,
temperature range, PLL macro oscillation clock division value, and PLL multiple rate prohibit the setting of
dividing by 1.
Therefore, please use the device with setting as dividing by 2 to 4 by ODS0 or ODS1 bit in the PLL config-
uration register (PLLCR).
Example) To use the PLL clock at 60MHz
Product type
PLL macro
oscillation clock
frequency
Temperature range
PLL macro
oscillation clock
divider
PLL multiple rate
MB91F647
16 MHz to 60 MHz
20 °C to + 85 °C
Divided by
1 to 4
Multiplied by 15
50 MHz to 60 MHz
40 °C to + 85 °C
MB91F647A
80 MHz to 120 MHz
40 °C to + 85 °C
Divided by 2 to 4
Multiplied by 30
Product type
PLL input clock
frequency
PDS
ODS
PMS
PLL macro
oscillation clock
frequency
MB91F647
4 MHz
0000
00
1110
60 MHz
MB91F647A
4 MHz
0000
01
1110
120 MHz
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