MEC1322 Datasheet, PDF (5/456 Pages) Microchip Technology – Keyboard and Embedded Controller for Notebook PC

MEC1322
1.0 PIN CONFIGURATION
1.1 Description
The Pin Configuration chapter includes a Pin List, Pin Description, Pin Multiplexing and Package Outline.
1.2 Terminology and Symbols for Pins/Buffers
Term
Definition
Pin Ref. Number There is a unique reference number for each pin name.
#
The ‘#’ sign at the end of a signal name indicates an active-low signal
n
The lowercase ‘n’ preceding a signal name indicates an active-low signal
PWR
Power
I
Digital Input
IS
Input with Schmitt Trigger
I_AN
Analog Input
O
Push-Pull Output
OD
Open Drain Output
IO
Bi-directional pin
IOD
Bi-directional pin with Open Drain Output
PIO
Programmable as Input, Output, Open Drain Output, Bi-directional or Bi-directional with Open
Drain Output.
PCI_I
Input. These pins meet the PCI 3.3V AC and DC Characteristics. (Note 1-1)
PCI_O
Output. These pins meet the PCI 3.3V AC and DC Characteristics. (Note 1-1)
PCI_OD
Open Drain Output. These pins meet the PCI 3.3V AC and DC Characteristics. (Note 1-1)
PCI_IO
Input/Output These pins meet the PCI 3.3V AC and DC Characteristics. (Note 1-1)
PCI_ICLK
Clock Input. These pins meet the PCI 3.3V AC and DC Characteristics and timing. (Note 1-2)
PCI_PIO
Programmable as Input, Output, Open Drain Output, Bi-directional or Bi-directional with Open
Drain Output. These pins meet the PCI 3.3V AC and DC Characteristics. (Note 1-1).
IO_PECI
PECI Input/Output. These pins are at the PECI V_REF level. See Chapter 37.0, "Electrical Spec-
ifications".
Note 1-1 See the “PCI Local Bus Specification,” Revision 2.1, Section 4.2.2.
Note 1-2 See the “PCI Local Bus Specification,” Revision 2.1, Section 4.2.2 and 4.2.3.
1.3 Pin List
The Pin List for the three package options is shown in Table 1-1, Table 1-2 and Table 1-3.
Note: The Pin Ref. Numbers are the same as the pin numbers in the “128 VTQFP Number” column in Table 1-1,
"MEC1322 128 VTQFP Pin Configuration".
 2014 - 2015 Microchip Technology Inc.
DS00001719D-page 5