
135
PIN
47
48
49
50
51
53
54
55
56
NAME
POWER WELL
VCC
Note 2
VCC
Note 2
VCC
Note 2
VCC
Note 2
VCC
Note 2
VCC
Note 2
VCC
Note 2
VCC
VCC
Default on VTR
POR
Input
Input
Input
Input
Input
Input
Input
Output, high
Output, high
Default on
VCC POR
-
-
-
-
-
-
-
-
Output,
high
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Output, low
-
-
-
-
SMI/PME
Functionality
SMI/PME
SMI/PME
SMI/PME
SMI/PME
SMI/PME
SMI/PME
SMI/PME
No
No
nINTRSN /GP25
Note5
Reserved /GP26
Note1,5
GP27
Note5
GP44
GP45
Reserved /GP32
Note1
GP33/WDO
GP34/IRRX2
GP35/IRTX2
58
59
60
61
100
101
102
103
104
105
106
107
108
109
110
111
120
122
123
124
125
126
127
128
GP36 /nMTR1
GP37/nDS1
GP40/DRVDEN0
GP41/DRVDEN1
GP70/IRQ3
GP71/IRQ4
GP72/IRQ5
GP73/IRQ6
GP74/IRQ7
GP75/IRQ9
GP76/IRQ10
GP77/IRQ11
GP80/IRQ12
GP81/IRQ14
GP82 /IRQ15
nIO_SMI/GP46
nRI2/ GP50
Note 6
nDCD2/ GP51
RXD2 /GP52
TXD2 /GP53
nDSR2/ GP54
nRTS2/ GP55
nCTS2/ GP56
nDTR2/ GP57
VCC
Note 2
VCC
Note 2
VCC
VCC
Note 2
VCC
Note 2
VCC
Note 2
VCC
Note 2
VCC
Note 2
VCC
Note 2
VCC
Note 2
VCC
Note 2
VCC
Note 2
VCC
Note 2
VCC
Note 2
VCC
Note 2
VCC
VCC
Note 2
VCC
VCC
VCC
VCC
VCC
VCC
Note 2
VCC
Note 2
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Output/OD, high
Input
Input
Input
Output, low
Input
Output
Input
Output
SMI/PME
SMI/PME
No
SMI/PME
SMI/PME
SMI/PME
SMI/PME
SMI/PME
SMI/PME
SMI/PME
SMI/PME
SMI/PME
SMI/PME
SMI/PME
SMI/PME
nIO_SMI
PME
No
No
No
SMI
No
PME
PME
Note 1: These pins default to a reserved function and must be programmed to their GPIO function
immediately following power-up.
Note 2: These pins have input buffers into the wakeup logic that are powered by VTR.
Note 3: The pins that are not powered by VTR that default to output on VTR POR will float when the
part is under VTR power only. The output default values shown for these pins refer to the
GPIO control and data register defaults. These default values will not take effect on the pins
until VCC is active.
Note 4: The default value of GP65 on VTR POR depends on the value of pin 48 on VTR POR: if pin
48 is high, then this pin is high; if pin 48 is low, then this pin is low.
Note 5: GP25, GP26 and GP27 are general purpose inputs. These pins have no output capability.