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參數(shù)資料
| 型號： | MB91233LLGA-G-XXX-BNDE1 |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-BIT, MROM, 33.6 MHz, RISC MICROCONTROLLER, PBGA128 |
| 封裝： | PLASTIC, FLGA-128 |
| 文件頁數(shù)： | 13/66頁 |
| 文件大小： | 816K |
| 代理商： | MB91233LLGA-G-XXX-BNDE1 |
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MB91230 Series
20
■ HANDLING DEVICES
Preventing Latch-up
Latch-up may occur in a CMOS IC if a voltage greater than VCC or less than VSS is applied to an input or output
pin or if an above-rating voltage is applied between VCC and VSS.
A latch-up, if it occurs, significantly increases the power supply current and may cause thermal destruction of
an element. When you use a CMOS IC, be very careful not to exceed the absolute maximum rating.
Treatment of Unused Pins
Do not leave an unused input pin open, since it may cause a malfunction. Handle by, for example, using a pull-
up or pull-down resistor.
Treatment of Pins at Unusing LCD
Leave COM0 to COM3 pins open.
V0 to V3 pins should always be pulled up or down through resistance of at least 2 k
.
About Power Supply Pins
In products with multiple VCC or VSS pins, the pins of the same potential are internally connected in the device
to avoid abnormal operations including latch-up. However, you must connect the pins to external power supply
and a ground line 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 output current rating.
Moreover, connect the current supply source with the VCC and VSS pins of this device at the low impedance.
It is also advisable to connect a ceramic bypass capacitor of approximately 0.1
F between VCC and VSS near
this device.
About Crystal Oscillator Circuit
Noise near the X0, X1, X0A and X1A pins may cause the device to malfunction. Design the printed circuit board
so that X0, X1, X0A and X1A the crystal oscillator (or ceramic oscillator) , and the bypass capacitor to ground
are located as close to the device as possible.
It is strongly recommended to design the PC board artwork with the X0, X1, X0A and X1A pins surrounded by
ground plane because stable operation can be expected with such a layout.
Please ask the crystal maker to evaluate the oscillational characteristics of the crystal and this device.
Treatment of NC and OPEN Pins
Pins marked as NC and OPEN must be left open-circuit.
About Mode Pins (MD0 to MD2)
These pins should be connected directly to VCC or VSS.
To prevent the device erroneously switching to test mode due to noise, design the printed circuit board such that
the distance between the mode pins and VCC or VSS is as short as possible and the connection impedance is low.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MB91233LLGA-GXXX-BNDE1 | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:32-bit Microcontroller |
| MB91233LPFF-G-XXX-BNDE1 | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:32-bit Microcontroller |
| MB91243PFV-GS-102-BNDE1 | 制造商:FUJITSU 功能描述:ELECTRONIC COMPONENT |
| MB91245 | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:32-bit Microcontroller |
| MB91245_07 | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:32-bit Microcontroller |
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