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M5LV-256/74-5YI

MACH 5 CPLD Family Fifth Generation MACH Architecture

Lattice Semiconductor 

OE Generator

There is one output enable (OE) generator per PAL block that generates two product-term driven

output enables. Each I/O cell is simply an output buffer. Each I/O cell within the PAL block can

choose to be permanently enabled, permanently disabled, or choose one of the two product term

output enables per PAL block (Figure 6).

Output Enable

Generator

VCC

Internal Feedback

External Feedback

Figure 6. Output Enable Generator and I/O Cell

20446G-006

8

MACH 5 Family

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