EM78159NAS EMC [ELAN Microelectronics Corp], EM78159NAS Datasheet - Page 47

• Manufacturer Part Number: EM78159NAS
• Description: 8-Bit Microcontroller with OTP ROM
• Manufacturer: EMC [ELAN Microelectronics Corp]

Product Specification (V1.0) 03.10.2006
(This specification is subject to change without further notice)
Symbol
Tvr
Tvd
Tpor
Internal POR
**
C.2 Power-On Reset and Vdd Voltage Drop/Rise Timing Test
Figure C-1 EM78P159N Power-On Reset and Vdd Voltage Drop/Rise Timing Test Timing Diagram
C.3 Address Trap Detect
*
Power on
Reset
/Reset
Vdd
Vdd Voltage drop time
Vdd Voltage rise time
Power on reset time
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 be auto started. Until CPU got the correct
function, it will execute the next program.
Parameter
Tpor
Vdd = 5V, -40℃ to 85℃
Vdd = 5V, -40℃ to 85℃
Vdd = 5V, -40℃ to 85℃
Condition
**
*
Tvd is the period of Vdd voltage lower than POR voltage.
Tvr is the period of Vdd voltage higher than 5.5V.
Tvd
8-Bit Microcontroller with OTP ROM
Min.
10.5
-
-
Typ.
16.8
-
-
Max.
22
1
1
EM78P159N
Tvr
Unit
ms
µs
us
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