Справочник Пользователя для IBM MaxLoader

MaxLoader User’s Guide 

 

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will be applied to the device for the first vector. Then, each output will be 

applied to the device for the first vector. This process will continue for each 

vector and any errors will be reported. 

Thin Quad Flat Pack. Similar to QFP but with a lower profile and physically 

smaller in length and width. 

Thin Small Outline Package. A surface-mount package with fine-pitch leads 

(usually 0.025 inch pitch) on two sides. This package is very low profile and 

commonly available in a reverse (mirror image) pin out used to simplify 

circuit board layout; usually 32 to 44 pins. 

UV Erasable   

The characteristic of an EPROM that allows it to be erased with exposure to 

short –wave ultra-violet light. This high-energy light can discharge the 

floating-gate transistor cells that store bits in an EPROM. The most common 

source of such light is a mercury vapor tube much like an ordinary 

fluorescent tube, but without the phosphor that turns the UV light emitted by 

the mercury into visible light. The light from ordinary fluorescent lamps or 

sunlight generally takes years to erase an EPROM. All UV erasable parts 

have a quartz windowed ceramic package that allows exposure with UV light. 

Verify            

 Reading a programmable device and comparing its contents to the desired 

pattern for that device. This is a go/no-go test – it does not report what the 

discrepancies are. See also: compare. 

Word width   

The number of output pins that a memory device has. The most common size 

for EPROMs is byte wide (8 bits) and “word” wide, or 16 bits. It can also 

refer to the aggregate width of several memory devices used in a set.