參數(shù)資料
型號： 935045620112
廠商： NXP SEMICONDUCTORS
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MICROCONTROLLER, PQCC44
封裝： PLASTIC, LCC-44
文件頁數(shù)： 40/80頁
文件大?。?/td> 446K
代理商： 935045620112
1997 Dec 15
45
Philips Semiconductors
Product specication
8-bit microcontrollers
P83C524; P80C528; P83C528
17.1
Power-on reset
When VDD is turned on, and provided its rise-time does not
exceed 10 ms, an automatic reset can be obtained by
connecting the RST pin to VDD via a 2.2 F capacitor.
When the power is switched on, the voltage on the RST pin
is equal to VDD minus the capacitor voltage, and
decreases from VDD as the capacitor charges through the
internal resistor (RRST) to ground. The larger the capacitor,
the more slowly VRST decreases. VRST must remain above
the lower threshold of the Schmitt trigger long enough to
effect a complete reset. The time required is the oscillator
start-up time, plus 2 machine cycles, or 16 x 2048 cycles
of the on-chip watchdog oscillator if it is running, whichever
is longer (see Fig.25).
Fig.25 Power-on reset.
handbook, halfpage
VDD
V
DD
RST
2.2
F
R RST
MBC474
P83C528
相關(guān)PDF資料
PDF描述
935208570557 8-BIT, 16 MHz, MICROCONTROLLER, PQFP44
935222930112 8-BIT, 24 MHz, MICROCONTROLLER, PQCC44
935208530112 8-BIT, 16 MHz, MICROCONTROLLER, PQCC44
935208550112 8-BIT, 16 MHz, MICROCONTROLLER, PQCC44
935208510112 8-BIT, 16 MHz, MICROCONTROLLER, PDIP40
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
9350-4R1 制造商:Johanson Manufacturing 功能描述:VARIABLE CAPACITOR 制造商:Johanson 功能描述:VARIABLE CAPACITOR
9350524523211N 制造商:ESSEX 功能描述:ESSEX 32V/DC
9350569 制造商:WIKA INSTRUMENTS 功能描述:1/8,1/4 GAUGE
93505A180 制造商:MISC. SPCR/STNDF/HND 功能描述:
93505A43 制造商:FLORIDA MISC. 功能描述: 制造商:Florida Misc. 功能描述:
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