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参数资料
| 型号： | MB91264BPMC-G-XXXE1 |
| 厂商： | FUJITSU LTD |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, MROM, 33 MHz, RISC MICROCONTROLLER, PQFP100 |
| 封装： | 14 X 14 MM, 1.70 MM HEIGHT, 0.50 MM PITCH, LEAD FREE, PLASTIC, QFP-100 |
| 文件页数： | 9/64页 |
| 文件大小： | 1403K |
| 代理商： | MB91264BPMC-G-XXXE1 |
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MB91260B Series
DS07-16507-3E
17
■ 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.
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.
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.
Operation at Start-up
Be sure to execute setting initialized reset (INIT) with INIT pin immediately after start-up.
Also, in order to provide the oscillation stabilization wait time for the oscillation circuit immediately after start-up,
hold the “L” level input to the INIT pin for the required stabilization wait time. (For INIT via the INIT pin, the
oscillation stabilization wait time setting is initialized to the minimum value) .
About Oscillation Input at Power On
When turning the power on, maintain clock input until the device is released from the oscillation stabilization
wait state.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MB91265 | 制造商:FUJITSU 制造商全称:Fujitsu Component Limited. 功能描述:32-bit Proprietary Microcontroller |
| MB91265A | 制造商:FUJITSU 制造商全称:Fujitsu Component Limited. 功能描述:32-bit Proprietary Microcontrollers |
| MB91266 | 制造商:FUJITSU 制造商全称:Fujitsu Component Limited. 功能描述:32-bit Proprietary Microcontroller |
| MB91266A | 制造商:FUJITSU 制造商全称:Fujitsu Component Limited. 功能描述:32-bit Proprietary Microcontrollers |
| MB91266APMC-GS-XXX | 制造商:FUJITSU 制造商全称:Fujitsu Component Limited. 功能描述:32-bit Proprietary Microcontrollers |
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