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參數(shù)資料
| 型號： | MB90P663A |
| 廠商： | Fujitsu Limited |
| 英文描述： | 16-bit Proprietary Microcontroller |
| 中文描述： | 16位微控制器專有 |
| 文件頁數(shù)： | 12/84頁 |
| 文件大?。?/td> | 1440K |
| 代理商： | MB90P663A |
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12
MB90660A Series
I
HANDLING DEVICES
1. Preventing Latchup
Latchup may occur with CMOS ICs if voltage higher than V
CC
or lower than V
SS
is applied to input and output
pins other than medium- to high-voltage pins or if higher than the voltage which shows on “1. Absolute Maximum
Ratings” in section “
I
Electrical Characteristics” is applied between V
CC
and V
SS
.
When latchup occurs, power supply current increases rapidly and might thermally damage elements. When
using, take great care not to exceed the absolute maximum ratings.
To prevent the similar aftereffects, use also the utmost care not to allow the analog supply voltage to exceed the
digital supply voltage.
2. Treatment of Unused Input Pins
Leaving unused input pins open could cause malfunctions. They should be pins should be connected to a pull-
up or pull-down resistor.
3. External Reset Input
When resetting by inputting “L” level to the RST pin, the “L” level must be input for at least 5 machine cycles to
ensure that internal reset has occurred. Be aware of this point when using external clock input.
4. V
CC
, V
SS
Pin
Be sure that both V
CC
and V
SS
are at the same voltage.
5. Notes on Using an External Clock
Drive X0 when using an external clock.
6. Order of Power-on to A/D Converter and Analog Inputs
Power-off (AV
CC
, AVR) to the digital power supply (V
CC
) must be performed only after the A/D converter and the
analog inputs (AN0 to AN7) has been turned on.
Turning on or off should always be performed keeping AVR below AV
CC
.
Use caution for the input voltage not to exceed AV
CC
when the pin sharing the analog input for its function is
used as an input port.
7. Programming Mode
When the MB90P663A is shipped from Fujitsu, all bits (48 K
×
8 bits) are set to “1”. Program by setting selected
bits to “0” when you wish to set the data. Note that “1” cannot be programming electrically.
X0
X1
MB90660A
Using an External Clock
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| MB90663APFM | 16-bit Proprietary Microcontroller |
| MB90662AP-SH | 16-bit Proprietary Microcontroller |
| MB90663AP-SH | 16-bit Proprietary Microcontroller |
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