- 您现在的位置：买卖IC网 > PDF目录98010 > MB90497GPFM 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP64 PDF资料下载
参数资料
| 型号： | MB90497GPFM |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP64 |
| 封装： | PLASTIC, LQFP-64 |
| 文件页数： | 6/90页 |
| 文件大小： | 849K |
| 代理商： | MB90497GPFM |
第1页第2页第3页第4页第5页当前第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页
MB90495G Series
14
s
s HANDLING DEVICES
Make sure you do not exceed the maximum rated values (in order to prevent latch-up) .
CMOS IC chips may suffer latch-up if a voltage higher than VCC or lower than VSS is applied to an input or
output pin with other than mid or high current resistance; or voltage exceeding the rating is applied across VCC
and VSS.
Latch-ups can dramatically increase the power supply current, causing thermal breakdown of the device.
Make sure that you do not exceed the maximum rated value of your device, in order to prevent a latch-up.
When turning the analog power supply on or off, make sure that the analog power voltage (AVCC, AVR) and
analog input voltages do not exceed the digital voltage (VCC) .
Handling Unused Pins
Leaving unused input pins open may cause malfunctions and latch-ups, permanently damaging the device.
Prevent this by connecting it to a pull-up or pull-down resistor of no less than 2 k
. Leave unused output pins
open in output mode, or if in input mode, handle them in the same as input pins.
Notes on Using External Clock
When using the external clock, drive pin X0 only, and leave pin X1 unconnected. See below for an example of
external clock use.
Example External Clock Use
Notes on Not Using Subclock
If you do not connect pins X0A and X1A to an oscillator, use pull-down handling on the X0A pin, and leave the
X1A pin open.
Power Supply Pins
If your product has multiple VCC or VSS pins, pins of the same potential are internally connected in the device
in order to avoid abnormal operation, including latch-up. However, you should make sure to connect the pins’
external power and ground lines, in order to lower unneeded emissions, prevent abnormal operation of strobe
signals due to a rise in ground levels, and maintain total output current within rated levels.
Take care to connect the VCC and VSS pins of MB90495G Series devices to power lines via the lowest possible
impedance.
It is recommended that you connect a bypass capacitor of approximately 0.1
F between VCC and VSS near
MB90495G Series device pins.
Crystal Oscillator Circuit
Noise in the vicinity of X0 and X1 pins could cause abnormal operations in MB90495G Series devices. Make
sure to provide bypass capacitors via the shortest possible distance from X0 and X1 pins, crystal oscillators
(or ceramic resonators) , and ground lines. In addition, design your printed circuit boards so as to keep X0
and X1 wiring from crossing other wiring, if at all possible.
It is strongly recommended that you provide printed circuit board artwork surrounding X0 and X1 pins within
a grand area, as this should stabilize operation.
X0
X1
Open
MB90495G Series
相关PDF资料 |
PDF描述 |
|---|---|
| MB90F498GPMC | 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP64 |
| MB90497GPMC | 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP64 |
| MB90F574/APFF | 16-BIT, FLASH, MICROCONTROLLER, PQFP120 |
| MB90F997MBSPMC | 16-BIT, FLASH, 32 MHz, MICROCONTROLLER, PQFP48 |
| MB90F997JBSPMC | 16-BIT, FLASH, 32 MHz, MICROCONTROLLER, PQFP48 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MB90497GPMC | 制造商:FUJITSU 制造商全称:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller |
| MB90520A | 制造商:FUJITSU 制造商全称:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller |
| MB90520B | 制造商:FUJITSU 制造商全称:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller |
| MB90522 | 制造商:FUJITSU 制造商全称:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller |
| MB90522A | 制造商:FUJITSU 制造商全称:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller |
发布紧急采购，3分钟左右您将得到回复。