參數(shù)資料
型號(hào)： MB91F233LLGA-GE1
廠商： FUJITSU LTD
元件分類： 微控制器/微處理器
英文描述： 32-bit Microcontroller
中文描述： 32-BIT, FLASH, 33.6 MHz, RISC MICROCONTROLLER, PBGA128
封裝： PLASTIC, FLGA-128
文件頁數(shù)： 20/66頁
文件大?。?/td> 861K
代理商： MB91F233LLGA-GE1
MB91230 Series
20
I
HANDLING DEVICES
Preventing Latchup
Latch-up may occur in a CMOS IC if a voltage greater than V
CC
or less than V
SS
is applied to an input or output
pin or if an above-rating voltage is applied between V
CC
and V
SS
.
A latchup, 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 V
CC
or V
SS
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 V
CC
and V
SS
pins of this device at the low impedance.
It is also advisable to connect a ceramic bypass capacitor of approximately 0.1
μ
F between V
CC
and V
SS
near
this device.
About Crystal Oscillator Circuit
Noise near the X0 and X1 pins may cause the device to malfunction. Design the printed circuit board so that
X0, X1, 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 and X1 pins surrounded by ground plane
because stable operation can be expected with such a layout.
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 V
CC
or V
SS
.
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 V
CC
or V
SS
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 untill the device is released from the oscillation stabilization
wait state.
相關(guān)PDF資料
PDF描述
MB91233L 32-bit Microcontroller
MB91233LLGA-GXXX-BNDE1 32-bit Microcontroller
MB91233LPFF-G-XXX-BNDE1 32-bit Microcontroller
MB91V230CR-ES 32-bit Microcontroller
MB91F233LPFF-GE1 32-bit Microcontroller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MB91F233LPFF-GE1 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:32-bit Microcontroller
MB91F233PFF-GE1 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:32-bit Microcontroller
MB91F248 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:32-bit Microcontroller
MB91F248PFV-GSE1 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:32-bit Microcontroller
MB91F248S 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:32-bit Microcontroller
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