1
Features
Serial Peripheral Interface (SPI) Compatible
Supports SPI Modes 0 (0,0) and 3 (1,1)
Low-voltage and Standard-voltage Operation
2.7 (V
CC
= 2.7V to 5.5V)
1.8 (V
CC
= 1.8V to 5.5V)
20 MHz Clock Rate (5V)
8-byte Page Mode
Block Write Protection
Protect 1/4, 1/2, or Entire Array
Write Protect (WP) Pin and Write Disable Instructions for
Both Hardware and Software Data Protection
Self-timed Write Cycle (5 ms max)
High Reliability
Endurance: One Million Write Cycles
Data Retention: 100 Years
Automotive Grade, Extended Temperature and Lead-Free Devices Available
8-lead PDIP, 8-lead JEDEC SOIC, 8-lead MAP and 8-lead TSSOP Packages
Description
The AT25010A/020A/040A provides 1024/2048/4096 bits of serial electrically eras-
able programmable read only memory (EEPROM) organized as 128/256/512 words of
8 bits each. The device is optimized for use in many industrial and commercial appli-
c a t i o n s w h e r e l o w - p o w e r a n d l ow vo l t a g e o p e r a t i o n a r e e s s e n t i a l . T h e
AT25010A/020A/040A is available in space saving 8-lead PDIP, 8-lead JEDEC SOIC,
8-lead MAP and 8-lead TSSOP packages.
The AT25010A/020A/040A is enabled through the Chip Select pin (CS) and accessed
via a 3-wire interface consisting of Serial Data Input (SI), Serial Data Output (SO), and
Serial Clock (SCK). All programming cycles are completely self-timed, and no sepa-
rate ERASE cycle is required before WRITE.
BLOCK WRITE protection is enabled by programming the status register with one of
four blocks of write protection. Separate program enable and program disable instruc-
tions are provided for additional data protection. Hardware data protection is provided
via the WP pin to protect against inadvertent write attempts. The HOLD pin may be
used to suspend any serial communication without resetting the serial sequence.
SPI Serial
EEPROMs
1K (128 x 8)
2K (256 x 8)
4K (512 x 8)
AT25010A
AT25020A
AT25040A
Preliminary
Pin Configurations
Pin Name
Function
CS
Chip Select
SCK
Serial Data Clock
SI
Serial Data Input
SO
Serial Data Output
GND
Ground
VCC
Power Supply
WP
Write Protect
HOLD
Suspends Serial Input
8-lead PDIP
1
2
3
4
8
7
6
5
CS
SO
WP
GND
VCC
HOLD
SCK
SI
8-lead SOIC
1
2
3
4
8
7
6
5
CS
SO
WP
GND
VCC
HOLD
SCK
SI
Rev. 3348DSEEPR5/03
8-lead MAP
Bottom View
1
2
3
4
8
7
6
5
VCC
HOLD
SCK
SI
CS
SO
WP
GND
8-lead TSSOP
1
2
3
4
8
7
6
5
CS
SO
WP
GND
VCC
HOLD
SCK
SI
2
AT25010A/020A/040A
3348DSEEPR5/03
Block Diagram
Absolute Maximum Ratings*
Operating Temperature ................................. -55C to + 125C
*NOTICE:
Stresses beyond those listed under "Absolute
Maximum Ratings" may cause permanent dam-
age to the device. This is a stress rating only and
functional operation of the device at these or any
other conditions beyond those indicated in the
operational 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 ....................................-1.0V to + 7.0V
Maximum Operating Voltage .......................................... 6.25V
DC Output Current........................................................ 5.0 mA
3
AT25010A/020A/040A
3348DSEEPR5/03
Note:
1. This parameter is characterized and is not 100% tested.
DC Characteristics
(1)
:
T
AI
= -40
C to +85
C
Note:
1. V
IL
min and V
IH
max are reference only and are not tested.
Pin Capacitance
(1)
Applicable over recommended operating range from T
A
= 25C, f = 1.0 MHz, V
CC
= +5.0V (unless otherwise noted).
Symbol
Test Conditions
Max
Units
Conditions
C
OUT
Output Capacitance (SO)
8
pF
V
OUT
= 0V
C
IN
Input Capacitance (CS, SCK, SI, WP, HOLD)
6
pF
V
IN
= 0V
Applicable over recommended operating range from: T
AI
= -40
C to +85
C, V
CC
= +1.8V to +5.5V, (unless otherwise noted).
Symbol Parameter
Test
Condition
Min
Typ
Max
Units
V
CC1
Supply
Voltage
1.8
5.5
V
V
CC2
Supply Voltage
2.7
5.5
V
V
CC3
Supply
Voltage
4.5
5.5
V
I
CC1
Supply
Current
V
CC
= 5.0V at 20 MHz, SO = Open, Read
6.5
8.0
mA
I
CC2
Supply
Current
V
CC
= 5.0V at 10 MHz, SO = Open,
Read, Write
3.5
5.0
mA
I
SB1
Standby
Current
V
CC
= 1.8V, CS = V
CC
0.1
0.5
A
I
SB2
Standby
Current
V
CC
= 2.7V, CS = V
CC
0.3
1.0
A
I
SB3
Standby Current
V
CC
= 5.0V, CS = V
CC
2.0
3.5
A
I
IL
Input
Leakage
V
IN
= 0V to V
CC
-3.0
A
I
OL
Output Leakage
V
IN
= 0V to V
CC
, T
AC
= 0C to 70C
-3.0
3.0
A
V
IL
(1)
Input Low-voltage
-0.6
V
CC
x 0.3
V
V
IH
(1)
Input High-voltage
V
CC
x 0.7
V
CC
+ 0.5
V
V
OL1
Output
Low-voltage
4.5V
V
CC
5.5V
I
OL
= 3.0 mA
0.4
V
V
OH1
Output High-voltage
I
OH
= -1.6 mA
V
CC
- 0.8
V
V
OL2
Output Low-voltage
1.8V
V
CC
3.6V
I
OL
= 0.15 mA
0.2
V
V
OH2
Output High-voltage
I
OH
= -100 A
V
CC
- 0.2
V
4
AT25010A/020A/040A
3348DSEEPR5/03
DC Characteristics
(1)
:
T
AE
= -40
C to +125
C
Note:
1. V
IL
min and V
IH
max are reference only and are not tested.
Applicable over recommended operating range from: T
AE
= -40
C to +125
C, V
CC
= +1.8V to +5.5V (unless otherwise
noted).
Symbol Parameter
Test
Condition
Min
Typ
Max
Units
V
CC1
Supply
Voltage
1.8
5.5
V
V
CC2
Supply Voltage
2.7
5.5
V
V
CC3
Supply
Voltage
4.5
5.5
V
I
CC1
Supply
Current
V
CC
= 5.0V at 20 MHz, SO = Open, Read
6.5
8.0
mA
I
CC2
Supply
Current
V
CC
= 5.0V at 10 MHz, SO = Open,
Read, Write
3.5
5.0
mA
I
SB1
Standby
Current
V
CC
= 1.8V, CS = V
CC
0.1
0.5
A
I
SB2
Standby
Current
V
CC
= 2.7V, CS = V
CC
0.2
1.0
A
I
SB3
Standby Current
V
CC
= 5.0V, CS = V
CC
2.0
3.5
A
I
IL
Input
Leakage
V
IN
= 0V to V
CC
-3.0
3.0
A
I
OL
Output Leakage
V
IN
= 0V to V
CC
, T
AC
= 0C to 70C
-3.0
3.0
A
V
IL
(1)
Input Low-voltage
-0.6
V
CC
x 0.3
V
V
IH
(1)
Input High-voltage
V
CC
x 0.7
V
CC
+ 0.5
V
V
OL1
Output
Low-voltage
4.5V
V
CC
5.5V
I
OL
= 3.0 mA
0.4
V
V
OH1
Output High-voltage
I
OH
= -1.6 mA
V
CC
- 0.8
V
V
OL2
Output Low-voltage
1.8V
V
CC
3.6V
I
OL
= 0.15 mA
0.2
V
V
OH2
Output High-voltage
I
OH
= -100 A
V
CC
- 0.2
V
5
AT25010A/020A/040A
3348DSEEPR5/03
AC Characteristics
Applicable over recommended operating range from T
AI
= -40 to +85C, T
AE
= -40 to +125
C, V
CC
= As Specified,
CL = 1 TTL Gate and 30 pF (unless otherwise noted).
Symbol
Parameter
Voltage
Min
Max
Units
f
SCK
SCK Clock Frequency
4.5 - 5.5
2.7 - 5.5
1.8 - 5.5
0
0
0
20
10
5
MHz
t
RI
Input Rise Time
4.5 - 5.5
2.7 - 5.5
1.8 - 5.5
2
2
2
s
t
FI
Input Fall Time
4.5 - 5.5
2.7 - 5.5
1.8 - 5.5
2
2
2
s
t
WH
SCK High Time
4.5 - 5.5
2.7 - 5.5
1.8 - 5.5
20
40
80
ns
t
WL
SCK Low Time
4.5 - 5.5
2.7 - 5.5
1.8 - 5.5
20
40
80
ns
t
CS
CS High Time
4.5 - 5.5
2.7 - 5.5
1.8 - 5.5
25
50
100
ns
t
CSS
CS Setup Time
4.5 - 5.5
2.7 - 5.5
1.8 - 5.5
25
50
100
ns
t
CSH
CS Hold Time
4.5 - 5.5
2.7 - 5.5
1.8 - 5.5
25
50
100
ns
t
SU
Data In Setup Time
4.5 - 5.5
2.7 - 5.5
1.8 - 5.5
25
50
100
ns
t
H
Data In Hold Time
4.5 - 5.5
2.7 - 5.5
1.8 - 5.5
25
50
100
ns
t
HD
Hold Setup Time
4.5 - 5.5
2.7 - 5.5
1.8 - 5.5
25
50
100
ns
t
CD
Hold Hold Time
4.5 - 5.5
2.7 - 5.5
1.8 - 5.5
25
50
100
ns
t
V
Output Valid
4.5 - 5.5
2.7 - 5.5
1.8 - 5.5
0
0
0
20
40
80
ns
t
HO
Output Hold Time
4.5 - 5.5
2.7 - 5.5
1.8 - 5.5
0
0
0
ns
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