AT27BV1024-90JC View Datasheet(PDF) - Atmel Corporation
Part Name
Description
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AT27BV1024-90JC
Atmel Corporation
AT27BV1024-90JC Datasheet PDF : 9 Pages
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AC Programming Characteristics
TA = 25 ± 5°C, VCC = 6.5 ± 0.25V, VPP = 13.0 ± 0.25V
Sym-
Test
bol Parameter Conditions* (1)
tAS
tCES
tOES
tDS
tAH
tDH
tDFP
tVPS
tVCS
tPW
tOE
tPRT
Address Setup Time
CE Setup Time
OE Setup Time
Data Setup Time
Address Hold Time
Data Hold Time
OE High to Out-
put Float Delay (2)
VPP Setup Time
VCC Setup Time
PGM Program Pulse
Width (3)
Data Valid from OE
VPP Pulse Rise Time During
Programming
Limits
Min Max Units
2
µs
2
µs
2
µs
2
µs
0
µs
2
µs
0 130 ns
2
µs
2
µs
95 105 µs
150 ns
50
ns
*AC Conditions of Test:
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
Notes: 1. VCC must be applied simultaneously or before VPP
and removed simultaneously or after VPP.
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%.
Rapid Programming Algorithm
A 100 µs PGM pulse width is used to program. The ad-
dress is set to the first location. VCC is raised to 6.5V and
VPP is raised to 13.0V. Each address is first programmed
with one 100 µs PGM pulse without verification. Then a
verification / reprogramming loop is executed for each ad-
dress. In the event a word fails to pass verification, up to
10 successive 100 µs pulses are applied with a verifica-
tion after each pulse. If the word fails to verify after 10
pulses have been applied, the part is considered failed.
After the word verifies properly, the next address is se-
lected until all have been checked. VPP is then lowered to
5.0V and VCC to 5.0V. All words are read again and com-
pared with the original data to determine if the device
passes or fails.
Atmel’s 27BV1024 Integrated
Product Identification Code (1)
Codes
Pins
Hex
A0 015-08 O7 O6 O5 O4 O3 O2 O1 O0 Data
Manufacturer 0 0 0 0 0 1 1 1 1 0 001E
Device Type 1 0 1 1 1 1 0 0 0 1 00F1
Note: 1. The AT27BV1024 has the same Product Identification
Code as the AT27C1024. Both are programming
compatible.
3-40
AT27BV1024
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