AT40KAL040KW1M-E datasheet(4/38 Pages) ATMEL

Part #	AT40KAL040KW1M-E

Description	Military Reprogrammable FPGAs with FreeRAM

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Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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4

AT40KAL

4263B–AERO–06/03

The Symmetrical

Array

At the heart of the Atmel architecture is a symmetrical array of identical cells (Figure 1).

The array is continuous from one edge to the other, except for bus repeaters spaced

every four cells (Figure 2 on page 5). At the intersection of each repeater row and col-

umn is a 32 x 4 RAM block accessible by adjacent buses. The RAM can be configured

as either a single-ported or dual-ported RAM(1), with either synchronous or asynchro-

nous operation.

Note:

1. The right-most column can only be used as single-port RAM.

Figure 1. Symmetrical Array Surrounded by I/O (AT40K20)

Note:

AT40KAL has registered I/Os. Group enable every sector for tri-states on obuf’s.

= I/O Pad

= AT40K Cell

= Repeater Row

= Repeater Column

= FreeRAM

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