AT27C256R-90JC Atmel, AT27C256R-90JC Datasheet - Page 5
![IC OTP 256KBIT 90NS 32PLCC](/photos/7/21/72190/453-32-plcc_sml.jpg)
AT27C256R-90JC
Manufacturer Part Number
AT27C256R-90JC
Description
IC OTP 256KBIT 90NS 32PLCC
Manufacturer
Atmel
Datasheet
1.AT27C256R-45PU.pdf
(15 pages)
Specifications of AT27C256R-90JC
Format - Memory
EPROMs
Memory Type
OTP EPROM
Memory Size
256K (32K x 8)
Speed
90ns
Interface
Parallel
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
0°C ~ 70°C
Package / Case
32-PLCC
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
AT27C256R90JC
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT27C256R-90JC
Manufacturer:
AT
Quantity:
7
Company:
Part Number:
AT27C256R-90JC
Manufacturer:
ATMEL
Quantity:
5 510
Company:
Part Number:
AT27C256R-90JC
Manufacturer:
MX
Quantity:
5 510
Part Number:
AT27C256R-90JC
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
.
9. AC Characteristics for Read Operation
Note:
10. AC Waveforms for Read Operation
Notes:
0014M–EPROM–12/07
Symbol
t
t
t
t
t
ACC
CE
OE
DF
OH
(1)
(1)
(1)
(1)
1. See AC Waveforms for Read Operation.
1. Timing measurement reference level is 1.5V for -45 devices. Input AC drive levels are V
2. OE may be delayed up to t
3. OE may be delayed up to t
4. This parameter is only sampled and is not 100% tested.
5. Output float is defined as the point when data is no longer driven.
surement reference levels for all other speed grades are V
and V
Parameter
Address to Output Delay
CE to Output Delay
OE to Output Delay
OE or CE High to Output
Float, Whichever Occurred First
Output Hold from Address, CE or OE,
Whichever Occurred First
IH
= 2.4V.
CE
ACC
- t
- t
OE
OE
after the falling edge of CE without impact on t
after the address is valid without impact on t
Condition
CE = OE = V
OE = V
CE = V
(1)
IL
IL
IL
OL
= 0.8V and V
Min
7
OH
-45
= 2.0V. Input AC drive levels are V
ACC
CE
Max
45
45
20
20
AT27C256R
.
.
IL
= 0.0V and V
Min
7
-70
AT27C256R
IH
Max
70
70
30
25
= 3.0V. Timing mea-
IL
= 0.45V
Units
ns
ns
ns
ns
ns
5