IBM MaxLoader manual Pqfp, Qfp, Ram, Rom, Soic

MaxLoader User’s Guide

	device and may be free, inexpensive or expensive. The most popular
	compiler is PALASM (prices under $200, available from AMD sales offices
	and representatives), which supports most of AMD’s line of PLDs with an
	easy-to-learn high-level language. The compiler that probably offers the
	highest level of functionality and flexibility is PLDmaster made by Logical
	Devices. It supports most PLDs and offers a sophisticated input language
	with full support for state machines and other complex constructs,
	partitioning designs into several PLDs, and graphical input. Their tools run
	on PCs and workstations. PLD compilers have simulators that can be used to
	test the functionality of your design and validate test vectors that you design
	before programming a device.
PQFP	Plastic Quad Flat Pack. See QFP.
QFP	Quad Flat Pack. A square IC package that has surface-mount leads coming
	from four sides. It is used for high-density applications, usually over 100
	pins. Lead pitch may be 0.025 inches or smaller.
RAM	Random Access Memory. A volatile memory device.
ROM	Read Only Memory. A non-volatile memory device that cannot be
	programmed by the user. It is programmed at the factory through the use of a
	mask pattern in the final fabrication steps of the die.
Serial Memory	An EPROM or EEPROM that is accessed by shifting in addresses and
	shifting out data one bit at a time. Interfaces are available using one, two or
	three wires for clock, data in, and data out.
Socket module	An interchangeable metal chassis that contains a programming socket.
SOIC	Small Outline Integrated Circuit. A surface-mount IC package that has two
	rows of leads on opposite sides. Commonly found in 8 to 32 pin sizes. Leads
	are usually 0.050 pitches.
Test vector	A set of characters that describe the inputs and outputs of a device during a
	functional test. There is one character in the vector for each pin on the device.
	Numbers represent inputs to be applied to the device (1 for Vih, 0 for Vil).
	Letters represent the outputs that must be tested (H for Voh, L for Vol, Z for
	high-impedance). During the test, the part will be powered up and each input
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