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參數(shù)資料
| 型號： | MB90V520 |
| 廠商： | Fujitsu Limited |
| 英文描述： | 16-bit Proprietary Microcontroller |
| 中文描述： | 16位微控制器專有 |
| 文件頁數(shù)： | 17/106頁 |
| 文件大小： | 1539K |
| 代理商： | MB90V520 |
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MB90520 Series
17
I
HANDLING DEVICES
1. Ensuring that the Voltage does not exceed the Maximum Rating (to Avoid a Latch-up).
In CMOS ICs, a latch-up phenomenon is caused when a voltage exceeding VCC or below VSS is applied to
input or output pins or if a voltage exceeding the rating is applied across VCC and VSS.
When a latch-up is caused, the power supply current may be dramatically increased, resulting in thermal
breakdown of devices. To avoid the latch-up, make sure that the voltage does not exceed the maximum rating.
In turning on/turning off the analog power supply, make sure the analog power voltages (AVCC, AVRH, DVCC)
and analog input voltages do not exceed the digital voltage (V
CC
).
And also make sure the voltages applied to the LCD power supply pins (V3 to V0) do not exceed the power
supply voltage (V
CC
).
2. Handling Unused Pins
Unused input pins left open may cause abnormal operation, or latch-up leading to permanent damage. Unused
input pins should be pulled-up or pull-down through at least 2 k
resistance.
Unused input/output pins may be left open in output state, but if such pins are in input state they should be
handled in the same way as input pins.
3. Notes on Using External Clock
In using the external clock, drive X0 pin only and leave X1 pin unconnected.
Using external clock
4. Unused Sub Clock Mode
If sub clock modes are not used, the oscillator should be connected to the X0A pin and X1A pin.
5. Power Supply Pins
In products with multiple V
cc
or V
ss
pins, pins with the same potential are internally connected in the device to
avoid abnormal operations including latch-ups. However, the pins should be connected to external powers and
ground lines to lower the electro-magnetic emission level, to prevent abnormal operation of strobe signals caused
by the rise in the ground level, and to conform to the total current rating.
Make sure to connect V
cc
and V
ss
pins via lowest impedance to power lines.
It is recommended that a bypass capacitor of around 0.1
μ
F be placed between the V
cc
and V
ss
pins near the
device.
X0
X1
Open
MB90520 series
相關PDF資料 |
PDF描述 |
|---|---|
| MB90522 | 36-Bit Bus Transceivers With 3-State Outputs 100-LQFP -55 to 125 |
| MB90522PFF | Quadruple 2-Input Positive-NAND Gates 14-CDIP -55 to 125 |
| MB90522PFV | Quadruple 2-Input Positive-NAND Gates 14-CFP -55 to 125 |
| MB90523 | Quadruple 2-Input Positive-NAND Gates 20-LCCC -55 to 125 |
| MB90523PFF | 16-bit Proprietary Microcontroller |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MB-910 | 制造商:Circuit Test 功能描述:BREADBOARD WIRING KIT - 350 PCS |
| MB9100100 | 制造商:COM/DUO 功能描述:FAN 4-6WKS |
| MB9100-100 | 制造商:COM/DUO 功能描述:FAN 4-6WKS |
| MB91101 | 制造商:Panasonic Industrial Company 功能描述:IC |
| MB91101A | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:32-bit RISC Microcontroller |
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