ATmega3290P datasheet(330/385 Pages) ATMEL

330 / 385 page

330

8021E–AVR–07/09

ATmega329P/3290P

27.5

System and Reset Characteristics

27.6

Standard Power-on Reset

This implementation of power-on reset existed in early versions of ATmega329P/3290P. The

table below describes the characteristics of this power-on reset and it is valid for the following

devices, only:

• ATmega329P revision B and older

• ATmega3290P revision B and older

Note:

1. The Power-on Reset will not work unless the supply voltage has been below VPOT (falling)

27.7

Enhanced Power-on Reset

This implementation of power-on reset exists in newer versions of ATmega329P/3290P. The

table below describes the characteristics of this power-on reset and it is valid for the following

devices only:

• ATmega329P revision C and newer

• ATmega3290P revision C and newer

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 VPOT (falling)

Table 27-3.

Reset, Brown-out, and Internal Voltage Reference Characteristics,

A = -40°C to 85°C

Symbol

Parameter

Min

Typ

Max

Units

VPOT

Power-on Reset Threshold Voltage (rising)

0.7

1.0

1.4

Power-on Reset Threshold Voltage (falling)(1)

0.05

0.9

1.3

SRON

Power-on Slope Rate

0.01

4.5

V/ms

Table 27-4.

Reset, Brown-out and Internal Voltage Reference Characteristics(1),

A = -40°C to 85°C

Symbol

Parameter

Min

Typ

Max

Units

VPOT

Power-on Reset Threshold Voltage (rising)

1.1

1.4

1.6

Power-on Reset Threshold Voltage (falling)(2)

0.6

1.3

1.6

SRON

Power-on Slope Rate

0.01

V/ms

ATmega3290P Datasheet(PDF) 330 Page - ATMEL Corporation

ATmega3290P Datasheet(HTML) 330 Page - ATMEL Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL