Rainbow-electronics Atmega169L Manuel d'utilisateur télécharger pdf (Page 37)

100

101

ATmega169V/L

2514A–AVR–08/02

Figure 14. Reset Logic

Notes: 1. Values are guidelines only. Actual values are TBD.

2. The Power-on Reset will not work unless the supply voltage has been below V

POT

(falling)

Table 16. Reset Characteristics

(1)

Symbol Parameter Condition Min Typ Max Units

POT

Power-on Reset Threshold

Voltage (rising)

TBD TBD TBD V

Power-on Reset Threshold

Voltage (falling)

(2)

TBD TBD TBD V

RST

RESET Pin Threshold Voltage TBD TBD TBD V

RST

Minimum pulse width on RESET

TBD TBD TBD ns

MCU Status

Brown-out

Reset Circuit

BODLEVEL [2..0]

Delay Counters

CKSEL[3:0]

TIMEOUT

WDRF

BORF

EXTRF

PORF

DATA BU S

Clock

Generator

SPIKE

FILTER

Pull-up Resistor

JTRF

JTAG Reset

Watchdog

Oscillator

SUT[1:0]

Power-on Reset

Circuit

1 2 ... 32 33 34 35 36 37 38 39 40 41 42 ... 316 317

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Rainbow-electronics Atmega169L Manuel d'utilisateur Page 37

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