MEC1404 Datasheet, PDF (505/572 Pages) Microchip Technology – Keyboard and Embedded Controller Products for Notebook PC

43.1.2 VTR_33_18 TIMING
MEC140X/1X
VTR
VTR_33_18
T_R
T_F
TABLE 43-2: VTR_33_18 TIMING
Parameters
VTR On to VTR_33_18 On
VTR_33_18 off to VTR Off
VTR_33_18 Rise Time
VTR_33_18 Fall Time
Symbol
MIN
TYP
MAX
Unit
Notes
T_R
T_F
V_Rise
V_Rise
0
-
0
-
10
-
10
-
-
us
-
us
-
us
-
us
Note:
VTR_33_18 may be connected to the same VTR Power Rail or the system 1.8V power rail. If the
VTR_33_18 power rail is connected to 1.8V rail this rail must be powered on only while the 3.3V VTR rail is
present. The 1.8V rail must not be applied to the device when the 3.3V VTR rail is off.
43.1.3 VBAT THRESHOLDS AND VBAT_POR
VBAT
VTRGD
VBAT <V_TH
VBAT_POR
Coin cell
insertion
 2015 - 2016 Microchip Technology Inc.
DS00001956D-page 505