MEC1404 Datasheet, PDF (492/572 Pages) Microchip Technology – Keyboard and Embedded Controller Products for Notebook PC

MEC140X/1X
42.0 ELECTRICAL SPECIFICATIONS
42.1 Maximum Ratings*
*Stresses exceeding those listed could cause permanent damage to the device. This is a stress rating only and func-
tional operation of the device at any other condition above those indicated in the operation sections of this specification
is not implied.
Note:
When powering this device from laboratory or system power supplies, it is important that the Absolute Max-
imum Ratings not be exceeded or device failure can result. Some power supplies exhibit voltage spikes on
their outputs when the AC power is switched on or off. In addition, voltage transients on the AC power line
may appear on the DC output. If this possibility exists, it is suggested that a clamp circuit be used.
42.1.1 ABSOLUTE MAXIMUM THERMAL RATINGS
TABLE 42-1: ABSOLUTE MAXIMUM THERMAL RATINGS
Parameter
Operating Temperature Range
Storage Temperature Range
Lead Temperature Range
42.1.2 ABSOLUTE MAXIMUM SUPPLY VOLTAGE RATINGS
Maximum Limits
0^oC to +70^oC
-55^o to +150^oC
Refer to JEDEC Spec J-STD-020B
TABLE 42-2: ABSOLUTE POWER SUPPLY RATINGS
Symbol
VBAT
VTR
VTR_33_18
VCC
Parameter
3.0V Battery Backup Power Supply with respect to ground
3.3V Suspend Power Supply with respect to ground
3.3V or 1.8V Power Supply with respect to ground
3.3V Main Power Supply with respect to ground (Con-
nected to VCC_PWRGD pin)
42.1.3 ABSOLUTE MAXIMUM I/O VOLTAGE RATINGS
Maximum Limits
-0.3V to +3.63V
-0.3V to +3.465V
-0.3V to +3.465V
-0.3V to +3.465V
Parameter
Maximum Limits
Voltage with respect to ground on any pin without back- -0.3V to (Power Supply used to power the buffer) + 0.3V
drive protection
(Note 42-1)
Note 42-1 The Power Supply used to power the buffer is shown in the Signal Power Well column of the Pin
Multiplexing Tables in Section 2.0 “Pin Configuration”.
DS00001956D-page 492
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