EM78P159NP Ver la hoja de datos (PDF) - ELAN Microelectronics

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EM78P159NP

8-Bit Microcontroller with OTP ROM

ELAN Microelectronics 

EM78P159N

8-Bit Microcontroller with OTP ROM

C.2 Power-On Reset and Vdd Voltage Drop/Rise Timing Test

Vdd

/Reset

Internal POR

Power on

Reset

Tpor

Tvr

Tvd

Symbol

Tpor

Tvd*

Tvr**

Parameter

Power on reset time

Vdd Voltage drop time

Vdd Voltage rise time

Condition

Vdd = 5V, -40℃ to 85℃

Vdd = 5V, -40℃ to 85℃

Vdd = 5V, -40℃ to 85℃

Min. Typ. Max. Unit

10.5 16.8

22

ms

-

-

1

µs

-

-

1

us

* Tvd is the period of Vdd voltage lower than POR voltage.

** Tvr is the period of Vdd voltage higher than 5.5V.

Figure C-1 EM78P159N Power-On Reset and Vdd Voltage Drop/Rise Timing Test Timing Diagram

C.3 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 be auto started. Until CPU got the correct

function, it will execute the next program.

Product Specification (V1.0) 03.10.2006

(This specification is subject to change without further notice)

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