2

7747B–AERO–04/09

AT68166F

Block Diagram

Figure 1. AT68166F Block Diagram

Figure 2. 512K x 8 Banks Block Diagram (AT60142F)

Packages

AT68166F and AT68166G are packed in MQFP68.

The pin assignment depends on the access time. There are 2 versions:

–

YM package where 3 pins are not connected.

–

A[18:0]

OE

CS1

WE1

I/O[15:8]

BANK1

512k x 8

CS2

WE2

I/O[23:16]

BANK2

512k x 8

CS3

WE3

I/O[31:24]

BANK3

512k x 8

CS0

WE0

I/O[7:0]

BANK0

512k x 8

or

I/O2[31:16]

or

I/O2[15:0]

or

I/O1[31:16]

or

I/O1[15:0]

or

I/O3[7:0]

or

I/O2[7:0]

or

I/O1[7:0]

or

I/O[7:0]

A

0

-

-

-

A

10

I/Ox

0

I/Ox

7

CSx

WEx

OE

Access Time

20 ns

18 ns

<18 ns

AT68166F

YM

YS

AT68166G

YS