Rainbow Electronics AT27C2048 - Manual (Page 7)

AT27C2048
7
Notes: 1. V
CC
must be applied simultaneously or before V
PP
and removed simultaneously or after V
PP
.
2. This parameter is only sampled and is not 100% tested. Output Float is defined as the point where data is no longer driven
—see timing diagram.
3. Program Pulse width tolerance is 50 µsec
±
5%.
AC Programming Characteristics
T
A
= 25
±
5°C, V
CC
= 6.5
±
0.25V, V
PP
= 13.0
±
0.25V
Symbol Parameter Test Conditions (1)
Limits
Units Min Max
t
AS
Address Setup Time
Input Rise and Fall Times
(10% to 90%) 20 ns
Input Pulse Levels
0.45V to 2.4V
Input Timing Reference Level
0.8V to 2.0V
Output Timing Reference Level
0.8V to 2.0V
2
µ
s
t
OES
OE Setup Time 2
µ
s
t
DS
Data Setup Time 2
µ
s
t
AH
Address Hold Time 0
µ
s
t
DH
Data Hold Time 2
µ
s
t
DFP
OE High to Output Float Delay (2) 0 130 ns
t
VPS
V
PP
Setup Time 2
µ
s
t
VCS
V
CC
Setup Time 2
µ
s
t
PW
PGM Program Pulse Width (3) 47.5 52.5
µ
s
t
OE
Data Valid from OE 150 ns
t
PRT
V
PP
Pulse Rise Time During
Programming
50 ns
Atmel’s 27C2048 Intergrated Product Identification Code
Codes
Pins
Hex Data A0 O15-O8 O7 O6 O5 O4 O3 O2 O1 O0
Manufacturer 0 0 0 0 0 1 1 1 1 0 001E
Device Type 1 0 1 1 1 1 0 1 1 1 00F7