參數(shù)資料
型號(hào)： MB90520B
廠商： Fujitsu Limited
英文描述： 16-bit Proprietary Microcontroller
中文描述： 16位微控制器專有
文件頁(yè)數(shù)： 17/99頁(yè)
文件大小： 978K
代理商： MB90520B
MB90520A/520B Series
17
I
HANDLING DEVICES
Take note of the following points when handling devices :
Do not exceed maximum rated voltage (to prevent latch-up)
Supply voltage stability
Power-on precautions
Power supply pins
Crystal oscillator circuit
Notes on using an external clock
Precautions when not using sub-clock mode
Treatment of unused pins
Treatment of N.C. pins
Treatment of pins when A/D converter is not used
Sequence for connecting and disconnecting the A/D converter power supply and analog input pins
Shared use of general-purpose I/O ports and LCD controller/driver SEG/COM pins
Conditions when output from ports 0 and 1 is undefined
Initialization
Notes on using the DIV A, Ri and DIVW A, RWi instructions
Notes on using REALOS
Device Handling Precautions
Do not exceed maximum rated voltage
(
to prevent latch
-
up
)
Latch-up occurs in CMOS ICs if a voltage greater than V
CC
or less than V
SS
is applied to an input or output pin
(other than a high or medium withstand voltage pin) or if the voltage applied between V
CC
and V
SS
exceeds
the rating. If latch-up occurs, the power supply current increases rapidly resulting in thermal damage to circuit
elements. Therefore, ensure that maximum ratings are not exceeded in circuit operation.
Similarly, when turning the analog power supply on or off, ensure the analog power supply voltages (AV
CC
,
AVRH, DV
CC
) and analog input voltages do not exceed the digital voltage (V
CC
) .
Also ensure that the voltages applied to the LCD power supply pins (V3 to V0) do not exceed the power supply
voltage (V
CC
) .
Supply voltage stability
Rapid changes in supply voltage may cause the device to misoperate, even if the voltage remains within the
allowed operating range. Accordingly, ensure that the V
CC
supply is stable.
The standard for power supply voltage stability is a peak-to-peak V
CC
ripple voltage at the mains supply
frequency (50 to 60 Hz) of 10
%
or less of V
CC
and a transient voltage change rate of 0.1 V/ms or less when
turning the power supply on or off.
Power
-
on precautions
To prevent misoperation of the internal regulator circuit at power-on, ensure that the power supply rising time
(0.2 V to 2.7 V) is at least 50
μ
s.
Power supply pins
When multiple V
CC
and V
SS
pins are provided, connect all V
CC
and V
SS
pins to power supply or ground externally.
Although pins at the same potential are connected together in the internal device design so as to prevent
misoperation such as latch-up, connecting all V
CC
and V
SS
pins appropriately minimizes unwanted radiation,
prevents misoperation of strobe signals due to increases in the ground level, and keeps the overall output
current rating.
Also, ensure that the impedance of the V
CC
and V
SS
connections to the power supply are as low as possible.
相關(guān)PDF資料
PDF描述
MB90522A 16-bit Proprietary Microcontroller
MB90522APFF 16-bit Proprietary Microcontroller
MB90522APFV 16-bit Proprietary Microcontroller
MB90522B 16-bit Proprietary Microcontroller
MB90522BPFF 16-bit Proprietary Microcontroller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MB90522 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller
MB90522A 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller
MB90522APFF 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller
MB90522APFV 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller
MB90522B 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*