Features
•
Serial Peripheral Interface (SPI) Compatible
•
Supports SPI Modes 0 (0,0) and 3 (1,1)
•
•
•
•
•
•
•
•
•
•
– Data Sheet Describes Mode 0 Operation
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 Devices Available
8-lead JEDEC PDIP, 8-lead JEDEC SOIC, 8-lead Ultra Thin mini-MAP (MLP 2x3) and 8-
lead TSSOP Packages
Die Sales: Wafer Form, Waffle Pack, Bumped Wafers
SPI Serial
EEPROM
1K (128x8)
2K (256x8)
4K (512x8)
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 ow - p ow e r a n d l ow - vo l t a g e o p e ra 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 Ultra Thin
mini-MAP (MLP 2x3)
, and 8-lead TSSOP packages.
The AT25010A/020A/040A is enabled through the Chip Select pin (CS) and accessed
via a three-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
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.
Table 1.
Pin Configuration
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
8-lead
Ultra Thin mini-MAP (MLP 2x3)
VCC
HOLD
SCK
SI
8
7
6
5
1
2
3
4
CS
SO
WP
GND
C S
SO
W P
G N D
8-lead
TSSOP
1
2
3
4
8
7
6
5
V
H
S
S
C C
O L
C K
I
CS
SO
WP
GND
1
2
3
4
8
7
6
5
VCC
HOLD
SCK
SI
8-lead
PDIP
C S
SO
W P
G N D
8-lead SOIC
1
2
3
4
8
7
6
5
V
H
S
S
C C
O L
C K
I
AT25010A
AT25020A
AT25040A
Bottom view
3348J–SEEPR–8/06
Absolute Maximum Ratings*
Operating Temperature....................................
−40°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.
Figure 1.
Block Diagram
STATUS
REGISTER
MEMORY ARRAY
128/256/512 X
8
ADDRESS
DECODER
DATA
REGISTER
OUTPUT
BUFFER
MODE
DECODE
LOGIC
CLOCK
GENERATOR
2
AT25010A/020A/040A
3348J–SEEPR–8/06
AT25010A/020A/040A
Table 2.
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
Table 3.
DC Characteristics
(1)
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
CC3
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
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
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
= 5.0V at 1 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
8.5
4.5
2.0
0.1
0.2
2.0
Typ
Max
5.5
5.5
5.5
10.0
5.0
3.0
0.5
1.0
3.5
Units
V
V
V
mA
mA
mA
µA
µA
µA
µA
µA
V
V
V
V
V
V
3.6V
≤
V
CC
≤
5.5V
1.8V
≤
V
CC
≤
3.6V
1. V
IL
min and V
IH
max are reference only and are not tested.
3
3348J–SEEPR–8/06
京公网安备 11010802033920号
EEWORLD
