參數(shù)資料
型號(hào)： MB90428GCPF
廠商： FUJITSU LTD
元件分類： 微控制器/微處理器
英文描述： 16-Bit Original Microcontroller
中文描述： 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP100
封裝： 14 X 20 MM, 3.35 MM HEIGHT, 0.65 MM PITCH, PLASTIC, QFP-100
文件頁數(shù)： 14/84頁
文件大?。?/td> 501K
代理商： MB90428GCPF
MB90420G/425G Series
14
Power supply pins
Devices are designed to prevent problems such as latchup when multiple V
CC
and V
SS
supply pins are used, by
providing internal connections between pins having the same potential. However, in order to reduce unwanted
radiation, and to prevent abnormal operation of strobe signals due to rise in ground level, and to maintain total
output current ratings, all such pins should always be connected externally to power supplies and ground.
As shown in figure below, all V
CC
power supply pins must have the same potential. All V
SS
power supply pins
should be handled in the same way. If there are multiple V
CC
or V
SS
systems, the device will not operate properly
even within the warranted operating range.
In addition, care must be given to connecting the V
CC
and V
SS
pins of this device to a current source with as little
impedance as possible. It is recommended that a bypass capacitor of 1.0
μ
F be connected between V
CC
and
V
SS
as close to the pins as possible.
Proper sequence of A/D converter power supply analog input
A/D converter power (AV
CC
, AVRH) and analog input (AN0-AN7) must be applied after the digital power supply
(V
CC
) is switched on. When power is shut off, the A/D converter power supply and analog input must be cut off
before the digital power supply is switched on (V
CC
) . In both power-on and shut-off, care should be taken that
AVRH does not exceed AV
CC
. Even when pins which double as analog input pins are used as input ports, be
sure that the input voltage does not exceed AV
CC
. (There is no problem if analog power supplies and digital
power supplies are turned off and on at the same time.)
Handling the power supply for high-current output buffer pins (DV
CC
, DV
SS
)
Always apply power to high-current output buffer pins (DV
CC
, DV
SS
) after the digital power supply (V
CC
) is turned
on. Also when switching power off, always shut off the power supply to the high-current output buffer pins (DV
CC
,
DV
SS
) before switching off the digital power supply (V
CC
) . (There will be no problem if high-current output buffer
pins and digital power supplies are turned off and on at the same time.)
Even when high-current output buffer pins are used as general purpose ports, the power for high current output
buffer pins (DV
CC
, DV
SS
) should be applied to these pins.
Pull-up/pull-down resistance
The MB90420G/425G series does not support internal pull-up/pull-down resistance. If necessary, use external
components.
V
CC
V
SS
V
CC
V
CC
V
CC
V
CC
V
SS
V
SS
V
SS
V
SS
Power supply input pins (V
CC
/V
SS
)
相關(guān)PDF資料
PDF描述
MB90428GCPFV 16-Bit Original Microcontroller
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MB90F423GCPF 16-Bit Original Microcontroller
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MB90428GCPFV 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-Bit Original Microcontroller
MB90428GCPMC 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-Bit Original Microcontroller
MB90428GPF 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-Bit Original Microcontroller
MB90428GPFV 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-Bit Original Microcontroller
MB90435 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller
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