MEC1404 Datasheet, PDF (24/572 Pages) Microchip Technology – Keyboard and Embedded Controller Products for Notebook PC

MEC140X/1X
128-pin VTQFP
128
144-pin WFBGA
M11
H9
J8
J9
K13
E5
E6
E7
E8
E9
F5
F6
F7
F8
F9
G8
L8
MEC141x
VCI_OVRD_IN/GPIO164
VSS
VSS
VSS
VSS
No Connect
No Connect
No Connect
No Connect
No Connect
No Connect
No Connect
No Connect
No Connect
No Connect
No Connect
No Connect
Pin Name
2.5 Non 5 Volt Tolerant Pins
There are no 5 Volt tolerant pins in the MEC140X/1X.
2.6 1.8V or 3.3V I/O Pins
The following signals are powered by the VTR_33_18 power supply. This supply determines the operating voltage range
for these signals.
Note:
The LPC Interface signals require the VTR_33_18 power pin to be connected to the 3.3V VTR rail. The
eSPI Interface signals require the VTR_33_18 power pin to be connected to the 1.8V rail. The GPIO signals
on these pins may operate at either 1.8V or 3.3V.
• GPIO061/LPCPD#/ESPI_RESET#
• VTR_33_18
• GPIO063/SER_IRQ/ESPI_ALERT#
• GPIO064/LRESET#
• GPIO034/PCI_CLK/ESPI_CLK
• GPIO044/LFRAME#/ESPI_CS#
• GPIO040/LAD0/ESPI_IO0
• GPIO041/LAD1/ESPI_IO1
• GPIO042/LAD2/ESPI_IO2
• GPIO043/LAD3/ESPI_IO3
• GPIO067/CLKRUN#
2.7 POR Glitch Protected Pins
All pins have POR output glitch protection. POR output glitch protection ensures that pins will have a steady-state output
during a VTR POR.
DS00001956D-page 24
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