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参数资料
| 型号： | MB90867ESPF |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 16-BIT, MROM, 24 MHz, MICROCONTROLLER, PQFP100 |
| 封装： | 14 X 20 MM, 3.35 MM HEIGHT, 0.65 MM PITCH, PLASTIC, QFP-100 |
| 文件页数： | 13/68页 |
| 文件大小： | 1040K |
| 代理商： | MB90867ESPF |
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MB90860E Series
20
■ HANDLING DEVICES
1.
Preventing latch-up
Latch-up may occur in a CMOS IC under the following conditions :
A voltage higher than VCC or lower than VSS is applied to an input or output pin.
A voltage higher than the rated voltage is applied between VCC and VSS pins.
The AVCC power supply is applied before the VCC voltage.
Latch-up may increase the power supply current drastically, causing thermal damage to the device.
Therefore, be very careful not to apply analog power-supply voltages in excess of the digital power-supply
voltages.
2.
Handling unused pins
Leaving unused input pins open may cause malfunctions or permanent damages. Unused input pins must
therefore be connected to a pull-up or pull-down resistor, with a resistance of 2 k
or more.
Unused bidirectional pins should be set to the output state and can then be left open, or set to the input state
and handled as described above.
3.
Power supply pins (VCC/VSS)
If there are multiple VCC and VSS pins, from the point of view of device design, pins to be of the same potential
are connected the inside of the device to prevent such malfunctioning 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 VCC and VSS pins to the power
supply and ground externally. Connect VCC and VSS pins to the device from the current supply source at a
low impedance.
As a measure against power supply noise, connect a capacitor of about 0.1
F as a bypass capacitor between
VCC and VSS pins in the vicinity of VCC and VSS pins of the device.
4.
Mode pins (MD0 to MD2)
Connect the mode pins directly to the VCC or VSS pins. To prevent the device unintentionally entering test mode
due to noise, lay out the printed circuit board so as to minimize the distance from the mode pins to VCC or VSS
pins and to provide a low-impedance connection.
Vcc
Vss
Vcc
Vss
Vcc
MB90860E
Series
Vcc
Vss
Vcc
Vss
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MB90867ESPFV | 制造商:FUJITSU 制造商全称:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller |
| MB90880 | 制造商:FUJITSU 制造商全称:Fujitsu Component Limited. 功能描述:16-Bit Proprietary Microcontroller |
| MB90882 | 制造商:FUJITSU 制造商全称:Fujitsu Component Limited. 功能描述:16-Bit Proprietary Microcontroller |
| MB90882PF | 制造商:FUJITSU 制造商全称:Fujitsu Component Limited. 功能描述:16-Bit Proprietary Microcontroller |
| MB90882PMC | 制造商:FUJITSU 制造商全称:Fujitsu Component Limited. 功能描述:16-Bit Proprietary Microcontroller |
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