EM78P157N Ver la hoja de datos (PDF) - ELAN Microelectronics
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EM78P157N Datasheet PDF : 56 Pages
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EM78P157N
8-Bit Microcontroller with OTP ROM
C Address Trap Detect
An address trap detect is one of the fail-safe function that detects CPU malfunction
caused by noise or the like. If the CPU attempts to fetch an instruction from a part of
RAM, an internal recovery circuit will auto started. Until CPU got the correct function, it
will execute the next program that follows.
Vdd
/Reset
Internal POR
Power on
Reset
Tpor
Tvr
Tvd
Symbol
Parameter
Tpor Power on reset time
Tvd Vdd Voltage drop time
Tvr Vdd Voltage rise time
Condition
Min. Typ. Max. Unit
Vdd = 5V, -40℃ to 85℃
10.5 16.8
22
ms
Vdd = 5V, -40℃ to 85℃
-
-
1*
us
Vdd = 5V, -40℃ to 85℃
-
-
1**
us
* Tvd is the period of Vdd voltage less than POR voltage 1.9 volts.
** Tvr is the period of Vdd voltage higher than 5.5 volts.
50 •
Product Specification (V1.0) 09.22.2005
(This specification is subject to change without further notice)
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