Specifications

98 Chapter 6—Primitive Devices
The following table lists the available primitives and their functions.
Primitive Type Description Related Type Max. #
Inputs
NOT Inverter 1
AND N–input AND gate Any pin inversions 799
NAND N–input NAND gate Any pin inversions 799
OR N–input OR gate Any pin inversions 799
NOR N–input NOR gate Any pin inversions 799
XOR N–input XOR gate Any pin inversions 799
XNOR N–input XNOR gate Any pin inversions 799
Transmission
Gate
Transmission
Gate
1
Buffer Non–inverting N–bit
3–state buffer with
optional common inverted
enable
Buffer 400
Resistor Digital resistor 1
Multiplexer M*N to M multiplexer 256
Decoder 1 to N line decoder 256
Adder N–bit adder with carry in
and out
Incrementer 256
Subtractor N–bit subtractor with
borrow in and out
Decrementer 256
D Flip–Flop D–type flip–flop optional S & R 1
D Flip–Flop
with Enable
D–type flip–flop with
clock enable
optional S & R 1
JK Flip–Flop JK flip–flop T flip–flop, optional S & R 1
Register N–bit edge–triggered
register
256
Counter N–bit synchronous counter Up/down 256
LW Reference.bk Page 98 Monday, December 15, 2003 5:59 PM