ATMEL AT25040-10PC-2.7, AT25040-10PC-1.8, AT25040-10PC, AT25020-10SI-2.7, AT25020-10SI-1.8 Datasheet
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1
Features
•
Serial Peripheral Interface (SPI) Compatible
•
Supports SPI Modes 0(0,0) and 3(1,1)
•
Low-Volta ge and Standard-Voltage Operation
– 5.0 (VCC = 4.5V to 5.5V)
– 2.7 (VCC = 2.7V to 5.5V)
– 1.8 (VCC = 1.8V to 3.6V)
•
2.1 MHz Clock Rate (5V) Compatibility
•
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 (10 ms Max)
•
High Reliability
– Endurance: 1 Million Write Cycles
– Data Retention: 100 Years
– ESD Protection: >4000V
•
Automotive Grade and Extended Temperature Devices Available
•
8-Pin PDIP and JEDEC SOIC Packages
Description
The AT25010/020/040 provides 1024/2048/4096 bits of serial electrically erasable
programmable read only memory (EEPROM) org anized as 128/256/512 words of 8
bits each. The devi ce is optim ized for use i n many industr ial a nd com merc ial a pplications where low power and low voltage operation are essential. The AT25010/020/040
is available in space saving 8-pin PDIP and 8-pin JEDEC (SOIC) packages.
The AT25010/020/040 is enable d through the Chip Select pi n (CS
) and accessed via
a 3-wire interface consis ting of Ser ial Data Input (SI), Seri al Data Outpu t (SO), an d
Serial Clock (SCK). All programming cycles are completely self-timed, and no separate 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 instructions 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)
AT25010
AT25020
AT25040
Rev. 0606E–08/98
SPI, 1K Serial
E
2
PROM
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-Pin PDIP
1
2
3
4
8
7
6
5
CS
SO
WP
GND
VCC
HOLD
SCK
SI
8-Pin SOIC
1
2
3
4
8
7
6
5
CS
SO
WP
GND
VCC
HOLD
SCK
SI
AT25010/020/040
2
Block Diagram
Absolute Maximum Ratings*
Operating Temperature................................. -55°C to + 125°C
*NOTICE: Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent damage to the de vic e. T his is a stress r ating o nly an d
functional opera tion 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 reli abi li ty.
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
AT25010/020/040
3
Note: 1. This parameter is characterized and is not 100% tested.
Notes: 1. This parameter is preliminary and Atmel may change the specifications upon further characterization.
2. VIL min and VIH max are reference only and are not tested.
Pin Capacitance
(1)
Applicable over recommended operating range from TA = 25°C, f = 1.0 MHz, VCC = +5.0V (unless otherwise noted).
T est Condit ions Max Units Conditions
C
OUT
Output Capacitance (SO) 8 pF V
OUT
= 0V
C
IN
Input Capacitance (CS, SCK, SI, WP, HOLD)6 pFV
IN
= 0V
DC Characteristics
Applicable over recommended operating range from: TAI = -40°C to +85°C, VCC = +1.8V to +5.5V, TAC = 0°C to +70°C,
V
CC
= +1.8V to +5.5V (u nless otherwise noted).
Symbol Parameter T est Condit ion Min Max Units
V
CC1
(1)
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 VCC = 5.0V at 1 MHz, SO = Open 3.0 mA
I
CC2
Supply Current VCC = 5.0V at 2 MHz, SO = Open 6.0 mA
I
SB1
(1)
Standby Current VCC = 1.8V CS = V
CC
100 µA
I
SB2
Standby Current VCC = 2.7V CS = V
CC
100 µA
I
SB3
Standby Current VCC = 5.0V CS = V
CC
100 µA
I
IL
Input Leakage VIN = 0V to VCC -0.6 3.0 µA
I
OL
Output Leakage VIN = 0V to VCC, TAC = 0°C to 70°C-0.63.0µA
V
IL
(2)
Input Low Voltage -0.6 V
CC
x 0.3 V
V
IH
(2)
Input High Voltage VCC x 0.7 VCC + 0.5 V
V
OL1
Output Low Voltage 4.5V ≤ VCC ≤ 5.5V IOL = 2.0 mA 0.4 V
V
OH1
Output High Voltage IOH = -1.0 mA VCC - 0.8 V
V
OL2
Output Low Voltage 1.8V ≤ VCC ≤ 3.6V IOL = 0.15 mA 0.2 V
V
OH2
Output High Voltage IOH = -100 µAV
CC
- 0.2 V
AT25010/020/040
4
AC Characteristics
Applicable over recommended operating range from TA = -40°C to +85°C, VCC = As Specified,
CL = 1 TTL Gate and 100 pF (unless otherwise noted).
Symbol Parameter Voltage Min Max Units
f
SCK
SCK Clock F r e que nc y
4.5 - 5.5
2.7 - 5.5
1.8 - 3.6
0
0
0
2.1
2.1
0.5
MHz
t
RI
Input Rise Time
4.5 - 5.5
2.7 - 5.5
1.8 - 3.6
2
2
2
µ
s
t
FI
Input Fall Time
4.5 - 5.5
2.7 - 5.5
1.8 - 3.6
2
2
2
µ
s
t
WH
SCK High Time
4.5 - 5.5
2.7 - 5.5
1.8 - 3.6
200
200
800
ns
t
WL
SCK Low Time
4.5 - 5.5
2.7 - 5.5
1.8 - 3.6
200
200
800
ns
t
CS
CS High Time
4.5 - 5.5
2.7 - 5.5
1.8 - 3.6
250
250
1000
ns
t
CSS
CS Setup Time
4.5 - 5.5
2.7 - 5.5
1.8 - 3.6
250
250
1000
ns
t
CSH
CS Hold Time
4.5 - 5.5
2.7 - 5.5
1.8 - 3.6
250
250
1000
ns
t
SU
Data In Setup Time
4.5 - 5.5
2.7 - 5.5
1.8 - 3.6
50
50
100
ns
t
H
Data In Hold Time
4.5 - 5.5
2.7 - 5.5
1.8 - 3.6
50
100
100
ns
t
HD
Hold Setup Time
4.5 - 5.5
2.7 - 5.5
1.8 - 3.6
100
100
400
ns
t
CD
Hold Hold Time
4.5 - 5.5
2.7 - 5.5
1.8 - 3.6
200
200
400
ns
t
V
Output Valid
4.5 - 5.5
2.7 - 5.5
1.8 - 3.6
0
0
0
200
400
800
ns
t
HO
Output Hold Time
4.5 - 5.5
2.7 - 5.5
1.8 - 3.6
0
0
0
ns
AT25010/020/040
5
Note: 1. This parameter is characterized and is not 100% tested.
t
LZ
Hold to Output Low Z
4.5 - 5.5
2.7 - 5.5
1.8 - 3.6
0
0
0
100
100
100
ns
t
HZ
Hold to Output High Z
4.5 - 5.5
2.7 - 5.5
1.8 - 3.6
100
100
100
ns
t
DIS
Output Disable Time
4.5 - 5.5
2.7 - 5.5
1.8 - 3.6
250
500
1000
ns
t
WC
Write Cycle Time
4.5 - 5.5
2.7 - 5.5
1.8 - 3.6
10
ms
Endurance 5.0V, 25°C, Page Mode 1M Write Cycles
AC Characteristics (Continued)
Applicable over recommended operating range from TA = -40°C to +85°C, VCC = As Specified,
CL = 1 TTL Gate and 100 pF (unless otherwise noted).
Symbol Parameter Voltage Min Max Units
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