9

7747B–AERO–04/09

AT68166F

AC Characteristics

Temperature Range:................................................ -55 +125

°C

Supply Voltage: ....................................................... 3.3 +0.3V

Input Pulse Levels: .................................................. GND to 3.0V

Input Rise and Fall Times:....................................... 3ns (10 - 90%)

Input and Output Timing Reference Levels: ............ 1.5V

Figure 6. AC Test Loads Waveforms

Write Cycle

Notes: 1. Timings figures applicable for 8-bit, 16-bit and 32-bit mode.

2. Parameters guaranteed, not tested, with output loading 5 pF. (See “AC Test Loads Waveforms” on page 9.)

Specific (TWLQZ, TWHQX, TELQX, TEHQZ

TGLQX, TGHQZ)

General

Symbol

Parameter

AT68166F-20

AT68166F-18

Unit

min

max

min

max

TAVAW

Write cycle time

20

-

18

-

ns

TAVWL

Address set-up time

2

-

2

-

ns

TAVWH

Address valid to end of write

14

-

11

-

ns

TDVWH

Data set-up time

9

-

8

-

ns

TELWH

CS low to write end

12

-

12

-

ns

TWLQZ

-10-

8

ns

TWLWH

Write pulse width

12

-

9

-

ns

TWHAX

Address hold from end of write

0

-

0

-

ns

TWHDX

Data hold time

2

-

1

-

ns

TWHQX

5-3-

ns