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
SPI Serial
EEPROMs
1K (128 x 8)
2K (256 x 8)
4K (512 x 8)
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 io n s w h e r e l o w - p o w e r a n d l ow vo lt a g e o p e r a t io n a r e e s s e n t ia l . Th 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.
AT25010A
AT25020A
AT25040A
Preliminary
Pin Configurations
Pin Name
CS
SCK
SI
SO
GND
VCC
WP
HOLD
Function
Chip Select
Serial Data Clock
Serial Data Input
Serial Data Output
Ground
Power Supply
Write Protect
Suspends Serial Input
VCC
HOLD
SCK
SI
8
7
6
5
1
2
3
4
CS
SO
WP
GND
8-lead PDIP
CS
SO
WP
GND
1
2
3
4
8
7
6
5
VCC
HOLD
SCK
SI
8-lead SOIC
CS
SO
WP
GND
1
2
3
4
8
7
6
5
VCC
HOLD
SCK
SI
8-lead MAP
8-lead TSSOP
CS
SO
WP
GND
1
2
3
4
8
7
6
5
VCC
HOLD
SCK
SI
Bottom View
Rev. 3348E–SEEPR–06/03
1
Absolute Maximum Ratings*
Operating Temperature................................. -55°C to + 125°C
Storage Temperature .................................... -65°C to + 150°C
Voltage on Any Pin
with Respect to Ground ....................................-1.0V to + 7.0V
Maximum Operating Voltage .......................................... 6.25V
DC Output Current........................................................ 5.0 mA
*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.
Block Diagram
2
AT25010A/020A/040A
3348E–SEEPR–06/03
AT25010A/020A/040A
Pin Capacitance
(1)
Applicable over recommended operating range from T
A
= 25°C, f = 1.0 MHz, V
CC
= +5.0V (unless otherwise noted).
Symbol
C
OUT
C
IN
Note:
Test Conditions
Output Capacitance (SO)
Input Capacitance (CS, SCK, SI, WP, HOLD)
1. This parameter is characterized and is not 100% tested.
Max
8
6
Units
pF
pF
Conditions
V
OUT
= 0V
V
IN
= 0V
DC Characteristics
(1)
:
T
AI
= -40°C to +85°C
Applicable over recommended operating range from: T
AI
= -40°C to +85°C, V
CC
= +1.8V to +5.5V, (unless otherwise noted).
Symbol
V
CC1
V
CC2
V
CC3
I
CC1
I
CC2
I
SB1
I
SB2
I
SB3
I
IL
I
OL
V
IL(1)
V
IH(1)
V
OL1
V
OH1
V
OL2
V
OH2
Note:
Parameter
Supply Voltage
Supply Voltage
Supply Voltage
Supply Current
Supply Current
Standby Current
Standby Current
Standby Current
Input Leakage
Output Leakage
Input Low-voltage
Input High-voltage
Output Low-voltage
Output High-voltage
Output Low-voltage
Output High-voltage
4.5V
≤
V
CC
≤
5.5V
1.8V
≤
V
CC
≤
3.6V
I
OL
= 3.0 mA
I
OH
= -1.6 mA
I
OL
= 0.15 mA
I
OH
= -100 µA
V
CC
- 0.2
V
CC
- 0.8
0.2
V
CC
= 5.0V at 20 MHz, SO = Open, Read
V
CC
= 5.0V at 10 MHz, SO = Open,
Read, Write
V
CC
= 1.8V, CS = V
CC
V
CC
= 2.7V, CS = V
CC
V
CC
= 5.0V, CS = V
CC
V
IN
= 0V to V
CC
V
IN
= 0V to V
CC
, T
AC
= 0°C to 70°C
-3.0
-3.0
-0.6
V
CC
x 0.7
3.0
V
CC
x 0.3
V
CC
+ 0.5
0.4
Test Condition
Min
1.8
2.7
4.5
6.5
3.5
0.1
0.3
2.0
Typ
Max
5.5
5.5
5.5
8.0
5.0
0.5
1.0
3.5
Units
V
V
V
mA
mA
µA
µA
µA
µA
µA
V
V
V
V
V
V
1. V
IL
min and V
IH
max are reference only and are not tested.
3
3348E–SEEPR–06/03
DC Characteristics
(1)
:
T
AE
= -40°C to +125°C
Applicable over recommended operating range from: T
AE
= -40°C to +125°C, V
CC
= +1.8V to +5.5V (unless otherwise
noted).
Symbol
V
CC1
V
CC2
V
CC3
I
CC1
I
CC2
I
SB1
I
SB2
I
SB3
I
IL
I
OL
V
IL(1)
V
IH(1)
V
OL1
V
OH1
V
OL2
V
OH2
Note:
Parameter
Supply Voltage
Supply Voltage
Supply Voltage
Supply Current
Supply Current
Standby Current
Standby Current
Standby Current
Input Leakage
Output Leakage
Input Low-voltage
Input High-voltage
Output Low-voltage
Output High-voltage
Output Low-voltage
Output High-voltage
4.5V
≤
V
CC
≤
5.5V
1.8V
≤
V
CC
≤
3.6V
I
OL
= 3.0 mA
I
OH
= -1.6 mA
I
OL
= 0.15 mA
I
OH
= -100 µA
V
CC
- 0.2
V
CC
- 0.8
0.2
V
CC
= 5.0V at 20 MHz, SO = Open, Read
V
CC
= 5.0V at 10 MHz, SO = Open,
Read, Write
V
CC
= 1.8V, CS = V
CC
V
CC
= 2.7V, CS = V
CC
V
CC
= 5.0V, CS = V
CC
V
IN
= 0V to V
CC
V
IN
= 0V to V
CC
, T
AC
= 0°C to 70°C
-3.0
-3.0
-0.6
V
CC
x 0.7
Test Condition
Min
1.8
2.7
4.5
6.5
3.5
0.1
0.2
2.0
Typ
Max
5.5
5.5
5.5
8.0
5.0
0.5
1.0
3.5
3.0
3.0
V
CC
x 0.3
V
CC
+ 0.5
0.4
Units
V
V
V
mA
mA
µA
µA
µA
µA
µA
V
V
V
V
V
V
1. V
IL
min and V
IH
max are reference only and are not tested.
4
AT25010A/020A/040A
3348E–SEEPR–06/03
AT25010A/020A/040A
AC Characteristics
Applicable over recommended operating range from T
AI
= -40 to +85°C, T
AE
= -40 to +125°C, V
CC
= As Specified,
CL = 1 TTL Gate and 30 pF (unless otherwise noted).
Symbol
f
SCK
Parameter
SCK Clock Frequency
Voltage
4.5 - 5.5
2.7 - 5.5
1.8 - 5.5
4.5 - 5.5
2.7 - 5.5
1.8 - 5.5
4.5 - 5.5
2.7 - 5.5
1.8 - 5.5
4.5 - 5.5
2.7 - 5.5
1.8 - 5.5
4.5 - 5.5
2.7 - 5.5
1.8 - 5.5
4.5 - 5.5
2.7 - 5.5
1.8 - 5.5
4.5 - 5.5
2.7 - 5.5
1.8 - 5.5
4.5 - 5.5
2.7 - 5.5
1.8 - 5.5
4.5 - 5.5
2.7 - 5.5
1.8 - 5.5
4.5 - 5.5
2.7 - 5.5
1.8 - 5.5
4.5 - 5.5
2.7 - 5.5
1.8 - 5.5
4.5 - 5.5
2.7 - 5.5
1.8 - 5.5
4.5 - 5.5
2.7 - 5.5
1.8 - 5.5
4.5 - 5.5
2.7 - 5.5
1.8 - 5.5
20
40
80
20
40
80
25
50
100
25
50
100
25
50
100
25
50
100
25
50
100
25
50
100
25
50
100
0
0
0
0
0
0
20
40
80
Min
0
0
0
Max
20
10
5
2
2
2
2
2
2
Units
MHz
t
RI
Input Rise Time
µs
t
FI
Input Fall Time
µs
t
WH
SCK High Time
ns
t
WL
SCK Low Time
ns
t
CS
CS High Time
ns
t
CSS
CS Setup Time
ns
t
CSH
CS Hold Time
ns
t
SU
Data In Setup Time
ns
t
H
Data In Hold Time
ns
t
HD
Hold Setup Time
ns
t
CD
Hold Hold Time
ns
t
V
Output Valid
ns
t
HO
Output Hold Time
ns
5
3348E–SEEPR–06/03
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