MEC1322 datasheet(397/456 Pages) MICROCHIP

397 / 456 page

 2014 - 2015 Microchip Technology Inc.

DS00001719D-page 397

MEC1322

38.0 TIMING DIAGRAMS

38.1

Voltage Thresholds and Power Good Timing

38.1.1

VCC1_RST# TIMING

FIGURE 38-1:

VCC1_RST# TIMING

Note 38-1

The ARM starts executing instructions when EC_PROC_ RESET deasserts, which has the same

timing as t3.

FIGURE 38-2:

VCC1_RST# RISE TIME

Note 38-2

This corresponds to the time 2.65us (min) after the VCC1_RST# pin is released, the VCC1_RST#

pin input is sampled. See Section 3.6.1, "Integrated Vcc1 Power On Reset (VCC1_RST#)," on

page 53.

Note:

Timing values are preliminary and may change after characterization.

TABLE 38-1:

VCC1_RST# TIMING

Parameters

Symbol

MIN

TYP

MAX

Unit

Notes

VCC1 Threshold for Pin Glitch Protection

active

VTH1

0.9

1.1

VCC1 Power Good Threshold

VTH2

2.16

2.4

2.64

VCC1 Rise Time (Off to VCC1 =VThreshold)VRise

200

μs

VCC1 Fall Time (VCC1 =VThreshold) to Off

VFall

200

μs

VCC1 > VTH2 to VCC1GD (internal) asserted t1

600

μs

VCC1 < VTH2 to VCC1GD (internal) deas-

serted and VCC1_RST# pin asserted

100

VCC1 > VTH2 to VCC1_RST# pin deasserted t3

Note 38-1

TABLE 38-2:

VCC1_RST# RISE TIME

Parameters

Symbol

MIN

TYP

MAX

Units

Notes

VCC1_RST# Rise Time

2.65

μs

Note 38-2

U ndefin ed

F unc tional

F o rc ed to lo gic ‘0 ’

V CC1 G D (in te r n a l)

G litc h pr ote c te d

S ig n a l output

V CC1

U ndefined

V TH 2

V TH 1

VC C 1 _ R ST # Pin

V CC1 _ R S T # P in

MEC1322 Datasheet(PDF) 397 Page - Microchip Technology

MEC1322 Datasheet(HTML) 397 Page - Microchip Technology

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