Rainbow Electronics AT27BV020 - Manual (Page 8)

AT27BV020
8
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 100 µsec ± 5%.
Note: 1. The AT27BV020 has the same Product Identification Code as the AT27C020. Both are programming compatible.
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%) 20ns
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 µs
t
CES
CE Setup Time 2 µs
t
OES
OE Setup Time 2 µs
t
DS
Data Setup Time 2 µs
t
AH
Address Hold Time 0 µs
t
DH
Data Hold Time 2 µs
t
DFP
OE High to Output Float Delay (3) 0 130 ns
t
VPS
V
PP
Setup Time 2 µs
t
VCS
V
CC
Setup Time 2 µs
t
PW
PGM Program Pulse Width (2) 95 105 µs
t
OE
Data Valid from OE 150 ns
t
PRT
V
PP
Pulse Rise Time During
Programming
50 ns
Atmel’s 27BV020 Integrated Product Identification Code
(1)
Codes
Pins
Hex
Data A0 O7 O6 O5 O4 O3 O2 O1 O0
Manufacturer 0 0 0 0 1 1 1 1 0 1E
Device Type 1 1 0 0 0 0 1 1 0 86