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AT27C512R-12 Datasheet

  • AT27C512R-12

  • ATMEL Corporation [512K 64K x 8 OTP CMOS EPROM]

  • 252.54KB

  • ATMEL   ATMEL

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AT27C512R
AC Programming Characteristics
T
A
= 25
鹵
5擄C, V
CC
= 6.5
鹵
0.25V, OE/V
PP
= 13.0
鹵
0.25V
Sym-
bol
Parameter
Rapid Programming Algorithm
Units
碌
s
碌
s
碌
s
碌
s
碌
s
碌
s
Test
Condtions*
(1)
Limits
Min
Max
t
AS
Address Setup Time
2
2
2
2
0
2
0
2
95
105
1
2
50
130
t
OES
OE/V
PP
Setup Time
t
OEH
OE/V
PP
Hold Time
t
DS
t
AH
t
DH
t
DFP
Data Setup Time
Address Hold Time
Data Hold Time
CE High to
Output Float Delay
(2)
CE Program Pulse Width
(3)
Data Valid from CE
(2)
OE/V
PP
Recovery Time
OE/V
PP
Pulse Rise
Time During Programming
ns
碌
s
碌
s
碌
s
碌
s
A 100
碌s
CE pulse width is used to program. The address
is set to the first location. V
CC
is raised to 6.5V and
OE/V
PP
is raised to 13.0V. Each address is first pro-
grammed with one 100
碌s
CE pulse without verification.
Then a verification/reprogramming loop is executed for
each address. In the event a byte fails to pass verification,
up to 10 successive 100
碌s
pulses are applied with a veri-
fication after each pulse. If the byte fails to verify after 10
pulses have been applied, the part is considered failed.
After the byte verifies properly, the next address is se-
lected until all have been checked. OE/V
PP
is then low-
ered to V
IL
and V
CC
to 5.0V. All bytes are read again and
compared with the original data to determine if the device
passes or fails.
t
VCS
V
CC
Setup Time
t
PW
t
DV
t
VR
t
PRT
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. V
CC
must be applied simultaneously or before
OE/V
PP
and removed simultaneously or after
OE/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 鈥?see timing diagram.
3. Program Pulse width tolerance is 100
碌
sec
鹵
5%.
Atmel鈥檚 27C512R Integrated
Product Identification Code
Codes
Manufacturer
Device Type
Hex
A0 O7 O6 O5 O4 O3 O2 O1 O0
Data
0
1
0
0
0
0
0
0
1
0
1
1
1
1
1
0
0
1
1E
0D
Pins
3-141

AT27C512R-12 PDF文件相關(guān)型號(hào)

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