UVEPROM

UVEPROM

UVEPROM

UVEPROM

UVEPROM

AS27C256

AS27C256

Rev. 2.0 7/06

Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.

8

Austin Semiconductor, Inc.

RECOMMENDED TIMING REQUIREMENTS FOR PROGRAMMING: V

CC

= 6.5 and V

PP

=

12.75V (AMD FLASHRITE ALGO), T

A

= 25°C (See Figure 2)

PARAMETER MEASUREMENT INFORMATION

NOTES:

1. C

L

includes probe and fixture capacitance.

FIGURE 2. LOAD CIRCUIT AND VOLTAGE WAVEFORMS

The AC testing inputs are driven at 2.4V for logic high and 0.4V for logic low. Timing measurements are made

at 2V for logic high and 0.8V for logic low for both inputs and outputs.

2.08V

Output Under Test

R

MIN

TYP

MAX

UNIT

0µs

2µs

95

100

105

µs

2µs

2µs

2µs

2µs

2µs

2µs

Hold Time, Address

Hold Time, Data

Setup Time, Address

Pulse Duration, Initial Program

Setup Time, G\

Setup Time, E\

Setup Time, Data