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AT27C256R-70RC Datasheet(PDF) 5 Page - ATMEL Corporation

Part # AT27C256R-70RC
Description  256K 32K x 8 OTP CMOS EPROM
Download  9 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT27C256R-70RC Datasheet(HTML) 5 Page - ATMEL Corporation

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Pin Capacitance (f = 1MHz, T = 25°C)
(1)
Typ
Max
Units
Conditions
CIN
46
pF
VIN = 0V
COUT
812
pF
VOUT = 0V
Note:
1. Typical values for nominal supply voltage. This parameter is only sampled and is not 100% tested.
AC Waveforms for Read Operation
(1)
Notes: 1. Timing measurement reference level is 1.5V for -45
and -55 devices. Input AC drive levels are VIL =
0.0V and VIH = 3.0V. Timing measurement refer-
ence levels for all other speed grades are VOL =
0.8V and VOH = 2.0V. Input AC drive levels are VIL
= 0.45V and VIH = 2.4V.
2. OE may be delayed up to tCE - tOE after the falling
edge of CE without impact on tCE.
3. OE may be delayed up to tACC - tOE after the address is valid
without impact on tACC.
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.
Input Test Waveforms and Measurement Levels
tR, tF < 5 ns (10% to 90%)
For -45 and -55 devices only:
For -70, -90, -12, and -15 devices:
Output Test Load
Note:
CL= 100 pF including jig
capacitance, except for
the -45 and -55 devices,
where CL= 30 pF.
tR, tF < 20 ns (10% to 90%)
AT27C256R
3-129


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