參數(shù)資料
型號： MB89636RP-SH
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 10 MHz, MICROCONTROLLER, PDIP64
封裝： SHRINK, DIP-64
文件頁數(shù)： 70/153頁
文件大小： 7326K
代理商： MB89636RP-SH
MB89630 SERIES HARDWARE MANUAL
1-16
1.7 HANDLING DEVICES
(1) Prevention of latch-up
In the CMOS IC, latch-up may occur when a voltage higher than VCC or lower than VSS is applied to
other than the middle- or high-voltage resistant input or output pins, or when voltage exceeding the
Absolute Maximum Ratings is applied between VCC and VSS pins.
When latch-up occurs, the supply current increases rapidly, sometimes resulting in overheating and
destruc tion. Therefore, no voltage exceeding the Absolute Maximum Ratings should be used.
(2) Unused input pins
Leaving unused input pins open may cause a malfunction. Therefore, these pins should be pulled up or
down with optional resistors in the Input/Output circuits. If the Input/Output circuit has no optional resis-
tor, an exter nal resistor should be used.
(3) Non-Connected pins which have internal-connection (N.C.)
Non-Connected pins which have internal-connection (N.C.) must be open when the device is used.
(4) Variations in supply voltage
Some malfunction may be caused by an abrupt change of the power supply voltage even though the
voltage is in the guaranteed range. For this reason, the power supply to the device should be stabilized.
For the stabi lization, it is recommended to keep the power supply for the VCC ripple voltage regulation
(peak-to-peak) to less than 10% of the typical VCC at the commercial frequency (50 to 60 Hz), and the
coefficient of transitional variation should be less than 0.1 V/ms at a sudden supply voltage change (e.g.
voltage switching).
(5) Precautions for external clock
It may take a little time to stabilize the clock oscillation. The stabilization time should also be considered
for an external clock during resets because all internal circuits in the device need to be initialized. So, an
external clock should be input just after power-on reset (option selection) and cancellation of stop mode.
(6) Pin processing performed when A/D converter not used
When the A/D converter is not used, the pins should be connected to be AV CC = VCC, and AVSS = AVR =
AVSS.
(7) Recommended screening conditions
The OTPROM product should be screened by high-temperature aging before mounting.
Yield of preprogrammed product
The programming test cannot be performed for all bits of the preprogrammed OTPROM product due to its
characteristics. Consequently, 100% yield of programming cannot be ensured.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MB89637 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller
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MB89637PFM 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller
MB89637P-SH 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller
MB89637R 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-bit Proprietary Microcontroller
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