參數(shù)資料
型號： EM785842P
廠商： ELAN Microelctronics Corp .
英文描述： 8-BIT MICRO-CONTROLLER
中文描述： 8位微控制器
文件頁數(shù)： 37/45頁
文件大?。?/td> 461K
代理商： EM785842P
EM785840/5841/5842
8-bit Micro-controller
__________________________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
2004/11/10 V1.2
POR reset voltage is influenced in process or temperature. For some application, a constant reset voltage is
important. Next circuit will support a adjust reset voltage. By adjusting R41 and R46, POR reset voltage will be a
constant (Vpor) and the potential on /RESET pin will drop to 0 when VDD drop to below Vpor. Next plot show
the relative between VDD and Vpor. When R41 = 3.9M ohm and R46 = 910K ohm, /RESET will keep to 0 if
VDD is below 2.24V and will active after VDD upper to 2.1V.
C31
104
R42
2M2
R43
330K
S10
RESET
VDD
R44
22M
R41
3M9
RESET
Q3
C1815
Q2
C1815
R46
910K
Fig 16: External power on reset circuit 2
Fig 17: The relative between VDD and Vpor
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