參數(shù)資料
型號: MB90F351TEPMC1
廠商: FUJITSU LTD
元件分類: 微控制器/微處理器
英文描述: 16-bit Proprietary Microcontrollers
中文描述: 16-BIT, FLASH, 24 MHz, MICROCONTROLLER, PQFP64
封裝: 10 X 10 MM, 1.70 MM HEIGHT, 0.50 MM PITCH, PLASTIC, LQFP-64
文件頁數(shù): 25/85頁
文件大?。?/td> 880K
代理商: MB90F351TEPMC1
MB90350E Series
25
6.
Treatment of Power Supply Pins (V
CC
/V
SS
)
If there are multiple V
CC
and V
SS
pins, from the point of view of device design, pins to be of the same potential
are connected inside of the device to prevent malfunction such as latch-up.
To reduce unnecessary radiation, prevent malfunctioning of the strobe signal due to the rise of ground level,
and observe the standard for total output current, be sure to connect the V
CC
and V
SS
pins to the power supply
and ground externally.
Connect V
CC
and V
SS
pins to the device from the current supply source at a possibly low impedance.
As a measure against power supply noise, it is recommended to connect a capacitor of about 0.1
μ
F as a
bypass capacitor between V
CC
and V
SS
pins in the vicinity of V
CC
and V
SS
pins of the device.
7.
Pull-up/down resistors
The MB90350E series does not support internal pull-up/down resistors (Port 0 to Port 3: built-in pull-up resistors).
Use external components where needed.
Crystal oscillator circuit
8.
Noise around the X0/X1, or X0A/X1A pins may cause this device to operate abnormally. In the interest of stable
operation it is strongly recommended that printed circuit artwork places ground bypass capacitors as close as
possible to the X0/X1, X0A/X1A and crystal oscillator (or ceramic oscillator) and that oscillator lines do not cross
the lines of other circuits.
Please ask each crystal maker to evaluate the oscillational characteristics of the crystal and this device.
Turning-on sequence of power supply to A/D converter and analog inputs
9.
Make sure to turn on the A/D converter power supply (AV
CC
, AVRH) and analog inputs (AN0 to AN14) after
turning-on the digital power supply (V
CC
) .Turn-off the digital power after turning off the A/D converter power
supply and analog inputs. In this case, make sure that the voltage does not exceed AVRH or AV
CC
(turning on/
off the analog and digital power supplies simultaneously is acceptable).
10. Connection of unused pins of A/D converter if A/D converter is not used
Connect unused pins of A/D converter to AV
CC
=
V
CC
, AV
SS
=
AVRH
=
V
SS
.
11. Notes on energization
To prevent the internal regulator circuit from malfunctioning, set the voltage rise time during energization at
50
μ
s or more (0.2 V to 2.7 V) .
Vcc
Vss
Vss
Vcc
Vss
Vcc
MB90350E
Series
Vcc
Vss
Vcc
Vss
相關(guān)PDF資料
PDF描述
MB90F351TESPMC 16-bit Proprietary Microcontrollers
MB90F351TESPMC1 16-bit Proprietary Microcontrollers
MB90F352EPMC 16-bit Proprietary Microcontrollers
MB90F352EPMC1 16-bit Proprietary Microcontrollers
MB90F352ESPMC 16-bit Proprietary Microcontrollers
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