Figure 13, At40k/at40klv series fpga, A) primary i/o (a) secondary i/o – Rainbow Electronics AT40K40LV User Manual
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AT40K/AT40KLV Series FPGA
0896C–FPGA–04/02
Figure 13. South I/O (Mirrored for North I/O) AT40K/AT40KLV
VCC
TTL/CMOS
GND
PULL-UP
PAD
DRIVE
TRI-ST
A
TE
PULL-DOWN
DELA
Y
SCHMITT
“0”
“1”
“0”
“1”
CELL
CELL
CELL
PAD
GND
PULL-UP
PULL-DOWN
TTL/CMOS
DRIVE
VCC
TRI-ST
A
TE
DELA
Y
SCHMITT
“0”
“1”
“1”
“0”
CELL
CELL
(a) Primary I/O
(a) Secondary I/O
SOURCE SELECT MUX
SOURCE SELECT MUX
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