LH28F016SA

16M (1M × 16, 2M × 8) Flash Memory

16

Timing Nomenclature

For 3.3 V systems timings are measured from where signals cross 1.5 V. For 5.0V systems use the standard JEDEC

crosspoint definitions. Each timing parameter consists of 5 characters. Some common examples are defined below:

PIN CHARACTERS

PIN STATES

A

Address Inputs

H

High

D

Data Inputs

L

Low

Q

Data Outputs

V

Valid

ECE

X

Driven, but not necessarily valid

GOE

Z

High Impedance

W

WE (Write Enable)

PRP

RRY

V

Any Voltage Level

Y

3/5

5 V

V

3 V

V