1
Features
Fast Read Access Time - 45 ns
Low-Power CMOS Operation
100 A max. Standby
25 mA max. Active at 5 MHz (AT27C010L)
35 mA max. Active at 5 MHz (AT27C010)
JEDEC Standard Packages
32-Lead 600-mil PDIP
32-Lead PLCC
32-Lead TSOP
5V
10% Supply
High Reliability CMOS Technology
2000V ESD Protection
200 mA Latchup Immunity
RapidTM Programming Algorithm - 100 s/byte (typical)
CMOS and TTL Compatible Inputs and Outputs
Integrated Product Identification Code
Commercial, Industrial and Automotive Temperature Ranges
Description
The AT27C010(L) is a low-power, high-performance 1,048,576-bit one-time program-
mable read only memory (OTP EPROM) organized as 128K by 8 bits. They require
only one 5V power supply in normal read mode operation. Any byte can be accessed
in less than 45 ns, eliminating the need for speed reducing WAIT states on high-per-
formance microprocessor systems.
Two power versions are offered. In read mode, the AT27C010 typically consumes 25
mA while the AT27C010L requires only 8 mA. Standby mode supply current for both
parts is typically less than 10 A.
1-Megabit
(128K x 8)
OTP EPROM
AT27C010(L)
Rev. 0321J07/98
1M bit EPROM
Pin Configurations
Pin Name
Function
A0 - A16
Addresses
O0 - O7
Outputs
CE
Chip Enable
OE
Output Enable
PGM
Program Strobe
NC
No Connect
TSOP Top View
Type 1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
A11
A9
A8
A13
A14
NC
PGM
VCC
VPP
A16
A15
A12
A7
A6
A5
A4
OE
A10
CE
O7
O6
O5
O4
O3
GND
O2
O1
O0
A0
A1
A2
A3
PLCC Top View
5
6
7
8
9
10
11
12
13
29
28
27
26
25
24
23
22
21
A7
A6
A5
A4
A3
A2
A1
A0
O0
A14
A13
A8
A9
A11
OE
A10
CE
O7
4
3
2
1
32
31
30
14
15
16
17
18
19
20
O1
O2
GND
O3
O4
O5
O6
A12
A15
A16
VPP
VCC
PGM
NC
(continued)
PDIP Top View
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
VPP
A16
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
O0
O1
O2
GND
VCC
PGM
NC
A14
A13
A8
A9
A11
OE
A10
CE
O7
O6
O5
O4
O3
AT27C010(L)
2
The AT27C010(L) in available in a choice of industry stan-
dard JEDEC-approved one-time programmable (OTP)
plastic PDIP, PLCC, and TSOP packages. All devices fea-
ture two line control (CE, OE) to give designers the flexibil-
ity to prevent bus contention.
With 128K byte storage capability, the AT27C010(L) allows
firmware to be stored reliably and to be accessed by the
system without the delays of mass storage media.
Atmel's 27C010(L) have additional features to ensure high
quality and efficient production use. The RapidTM Program-
ming Algorithm reduces the time required to program the
part and guarantees reliable programming. Programming
time is typically only 100 s/byte. The Integrated Product
Identification Code electronically identifies the device and
manufacturer. This feature is used by industry standard
programming equipment to select the proper programming
algorithms and voltages.
System Considerations
Switching between active and standby conditions via the
Chip Enable pin may produce transient voltage excursions.
Unless accommodated by the system design, these tran-
sients may exceed data sheet limits, resulting in device
non-conformance. At a minimum, a 0.1
F high frequency,
low inherent inductance, ceramic capacitor should be uti-
lized for each device. This capacitor should be connected
between the V
CC
and Ground terminals of the device, as
close to the device as possible. Additionally, to stabilize the
supply voltage level on printed circuit boards with large
EPROM arrays, a 4.7
F bulk electrolytic capacitor should
be utilized, again connected between the V
CC
and Ground
terminals. This capacitor should be positioned as close as
possible to the point where the power supply is connected
to the array.
Block Diagram
AT27C010(L)
3
Note:
1.
Minimum voltage is -0.6V dc which may undershoot to -2.0V for pulses of less than 20 ns. Maximum output pin voltage is
V
CC
+ 0.75V dc which may overshoot to +7.0 volts for pulses of less than 20 ns.
Notes:
1. X can be V
IL
or V
IH
.
2. Refer to Programming Characteristics.
3. V
H
= 12.0
0.5V.
4. Two identifier bytes may be selected. All Ai inputs are held low (V
IL
), except A9 which is set to V
H
and A0 which is toggled low
(V
IL
) to select the Manufacturer's Identification byte and high (V
IH
) to select the Device Code byte.
Absolute Maximum Ratings*
Temperature Under Bias ................................ -55C to +125C
*NOTICE:
Stresses beyond those listed under "Absolute Maxi-
mum Ratings" may cause permanent damage to
the device. This is a stress rating only and func-
tional operation of the device at these or any other
conditions beyond those indicated in the opera-
tional sections of this specification is not implied.
Exposure to absolute maximum rating conditions
for extended periods may affect device reliability.
Storage Temperature ..................................... -65C to +150C
Voltage on Any Pin with
Respect to Ground .........................................-2.0V to +7.0V
(1)
Voltage on A9 with
Respect to Ground ......................................-2.0V to +14.0V
(1)
V
PP
Supply Voltage with
Respect to Ground .......................................-2.0V to +14.0V
(1)
Operating Modes
Mode\Pin
CE
OE
PGM
Ai
V
PP
Outputs
Read
V
IL
V
IL
X
(1)
Ai
X
D
OUT
Output Disable
X
V
IH
X
X
X
High Z
Standby
V
IH
X
X
X
X
High Z
Rapid Program
(2)
V
IL
V
IH
V
IL
Ai
V
PP
D
IN
PGM Verify
V
IL
V
IL
V
IH
Ai
V
PP
D
OUT
PGM Inhibit
V
IH
X
X
X
V
PP
High Z
Product Identification
(4)
V
IL
V
IL
X
A9 = V
H
(3)
A0 = V
IH
or V
IL
A1 - A16 = V
IL
X
Identification Code
AT27C010(L)
4
Notes:
1. V
CC
must be applied simultaneously or before V
PP
, and removed simultaneously or after V
PP
..
2. V
PP
may be connected directly to V
CC
, except during programming. The supply current would then be the sum of I
CC
and I
PP
..
Notes:
2,3,4,5. - see AC Waveforms for Read Operation.
DC and AC Operating Conditions for Read Operation
AT27C010/AT27C010L
-45
-55
-70
-90
-12
-15
Operating
Temp. (Case)
Com.
0
C - 70
C
0
C - 70
C
0
C - 70
C
0
C - 70
C
0
C - 70
C
0
C - 70
C
Ind.
-40
C - 85
C
-40
C - 85
C
-40
C - 85
C
-40
C - 85
C
-40
C - 85
C
-40
C - 85
C
Auto.
-40
C - 125
C
-40
C - 125
C
-40
C - 125
C
V
CC
Power Supply
5V
10%
5V
10%
5V
10%
5V
10%
5V
10%
5V
10%
DC and Operating Characteristics for Read Operation
Symbol
Parameter
Condition
Min
Max
Units
I
LI
Input Load Current
V
IN
= 0V to V
CC
Com., Ind.
1
A
Auto.
5
A
I
LO
Output Leakage Current
V
OUT
= 0V to V
CC
Com., Ind.
5
A
Auto.
10
A
IPP1
(2)
V
PP
(1))
Read/Standby Current
V
PP
= V
CC
10
A
I
SB
V
CC
(1)
Standby Current
I
SB1
(CMOS), CE = V
CC
0.3V
100
A
I
SB2
(TTL), CE = 2.0 to V
CC
+ 0.5V
1
mA
I
CC
V
CC
Active Current
f = 5 MHz, I
OUT
= 0 mA,
CE = V
IL
AT27C010(L)
25
mA
AT27C010
35
mA
V
IL
Input Low Voltage
-0.6
0.8
V
V
IH
Input High Voltage
2.0
V
CC
+ 0.5
V
V
OL
Output Low Voltage
I
OL
= 2.1 mA
0.4
V
V
OH
Output High Voltage
I
OH
= -400
A
2.4
V
AC Characteristics for Read Operation
Symbol
Parameter
Condition
AT27C010/AT27C010L
Units
-45
-55
-70
-90
-12
-15
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
t
ACC
(3)
Address to Output Delay
CE = OE = V
IL
45
55
70
90
120
150
ns
t
CE
(2)
CE to Output Delay
OE = V
IL
45
55
70
90
120
150
ns
t
OE
(2)(3)
OE to Output Delay
CE = V
IL
20
25
30
35
35
40
ns
t
DF
(4)(5)
OE or CE High to Output Float, whichever occurred
first
20
20
25
25
30
35
ns
t
OH
Output Hold from Address, CE or OE, whichever
occurred first
7
7
7
0
0
0
ns
AT27C010(L)
5
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 V
IL
= 0.0V and V
IH
= 3.0V.
Timing measurement reference levels for all other speed grades are V
OL
= 0.8V and V
OH
= 2.0V. Input AC drive levels are
V
IL
= 0.45V and V
IH
= 2.4V.
2.
OE may be delayed up to t
CE
- t
OE
after the falling edge of CE without impact on t
CE
.
3.
OE may be delayed up to t
ACC
- t
OE
after the address is valid without impact on t
ACC
.
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
Output Test Load
Note:
1. Typical values for nominal supply voltage. This parameter is only sampled and is not 100% tested.
t
R
, t
F
< 5 ns (10% to 90%)
For -45 and -55 devices only:
t
R
, t
F
< 20 ns (10% to 90%)
For -70, -90, -12, -15, and -20 devices:
Note:
C
L
= 100 pF including jig
capacitance, except for
the -45 and -55 devices,
where C
L
= 30 pF.
Pin Capacitance
f = 1 MHz, T = 25C
(1)
Symbol
Typ
Max
Units
Conditions
C
IN
4
8
pF
V
IN
= 0V
C
OUT
8
12
pF
V
OUT
= 0V
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