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参数资料
| 型号： | MB90653APFV |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 16-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP100 |
| 封装： | PLASTIC, LQFP-100 |
| 文件页数： | 17/106页 |
| 文件大小： | 873K |
| 代理商： | MB90653APFV |
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MB90650A Series
18
8.
Initializing
In this device there are some kinds of inner resisters which are initialized only by power on reset. It is possible
to initialize these resisters by turning on the power supply again.
9.
Power Supply Pins
When there are several VCC and VSS pins, those pins that should have the same electric potential are connected
within the device when the device is designed in order to prevent misoperation, such as latchup. However, all
of those pins must be connected to the power supply and ground externally in order to reduce unnecessary
emissions, prevent misoperation of strobe signals due to an increase in the ground level, and to observe the
total output current standards.
In addition, give a due consideration to the connection in that current supply be connected to VCC and VSS with
the lowest possible impedance.
Finally, it is recommended to connect a capacitor of about 0.1
F between VCC and VSS near this device as a
bypass capacitor.
10. Crystal Oscillation Circuit
Noise in the vicinity of the X0 and X1 pins will cause this device to operate incorrectly. Design the printed circuit
board so that the bypass capacitor connecting X0, X1 and the crystal oscillator (or ceramic oscillator) to ground
is located as close to the device as possible, and that the wiring does not cross the other wirings.
In addition, because printed circuit board artwork in which the area around the X0 and X1 pins is surrounded
by ground provides stable operation, such an arrangement is strongly recommended.
11. About 2 Power Supplies
The MB90650A series usually uses the 3-V power supply as the main power source. With Vcc1 = 3 V and Vcc2
= 5 V, however, it can interface with P20/A16 to P27/A23, P30/ALE to P37/CLK, P40/SIN0 to P47, and P70/SDA
to P72 for the 5-V power supply separately from the 3-V power supply at all operation mode. Note, however, that
the analog power supplies such as A/D and D/A can be used only as 3-V power supplies.
12. When not Using a Sub Clock Signal
Also when the sub-clock is not used, X0A and X1A pins should be connected to an oscillator.
13. Caution on Operations during PLL Clock Mode
If the PLL clock mode is selected, the microcontroller attempt to be working with the self-oscillating circuit even
when there is no external oscillator or external clock input is stopped. Performance of this operation, however,
cannot be guaranteed.
相关PDF资料 |
PDF描述 |
|---|---|
| MB90F654APFV | 16-BIT, FLASH, 12 MHz, MICROCONTROLLER, PQFP100 |
| MB90652APFV | 16-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP100 |
| MB90662APFM | 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP64 |
| MB90662AP-SH | 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PDIP64 |
| MB90P663AP-SH | 16-BIT, OTPROM, 16 MHz, MICROCONTROLLER, PDIP64 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MB90654A | 制造商:FUJITSU 制造商全称:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller |
| MB90654APF | 制造商:FUJITSU 制造商全称:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller |
| MB90654APFV | 制造商:FUJITSU 制造商全称:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller |
| MB90660A | 制造商:FUJITSU 制造商全称:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller CMOS |
| MB90662A | 制造商:FUJITSU 制造商全称:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller |
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