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參數(shù)資料
| 型號： | 90S1200 |
| 廠商： | Atmel Corp. |
| 元件分類： | 8位微控制器 |
| 英文描述： | -bit AVR Microcontroller with 8K Bytes In- System Programmable Flash |
| 中文描述： | 位AVR微控制器具有8K字節(jié)的系統(tǒng)內(nèi)可編程閃存 |
| 文件頁數(shù)： | 14/71頁 |
| 文件大?。?/td> | 1416K |
| 代理商： | 90S1200 |
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14
AT90S1200
0838H
–
AVR
–
03/02
been applied, the Power-on Reset period can be extended. Refer to Figure 15 for a tim-
ing example on this.
Figure 15.
MCU Start-up, RESET Controlled Externally
External Reset
An External Reset is generated by a low level on the RESET pin. Reset pulses longer
than 50 ns will generate a reset, even if the clock is not running. Shorter pulses are not
guaranteed to generate a reset. When the applied signal reaches the Reset Threshold
Voltage (V
RST
) on its positive edge, the delay timer starts the MCU after the Time-out
period t
TOUT
has expired.
Figure 16.
External Reset during Operation
Watchdog Reset
When the Watchdog times out, it will generate a short reset pulse of 1 XTAL cycle dura-
tion. On the falling edge of this pulse, the delay timer starts counting the Time-out period
t
TOUT
. Refer to page 23 for details on operation of the Watchdog.
VCC
RESET
TIME-OUT
INTERNAL
RESET
t
TOUT
V
POT
V
RST
VCC
RESET
TIME-OUT
INTERNAL
RESET
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相關(guān)代理商/技術(shù)參數(shù) |
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| 90S2313 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-Bit Microcontroller with 2K bytes In-System Programmable Flash |
| 90S2343 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-Bit Microcontroller with 2K Bytes of In-System Programmable Flash |
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| 90S8535 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-Bit Microcontroller with 4K/8K Bytes In-System Programmable Flash |
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