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AT24C64W-10SI-2.5

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
1
Features
•
Low-Voltage and Standard-Voltage Operation
– 5.0 (V
CC
= 4.5V to 5.5V)
– 2.7 (V
CC
= 2.7V to 5.5V)
– 2.5 (V
CC
= 2.5V to 5.5V)
– 1.8 (V
CC
= 1.8V to 5.5V)
•
Low-Power Devices (I
SB
= 2
µA @ 5.5V) Available
•
Internally Organized 4096 x 8, 8192 x 8
•
2-Wire Serial Interface
•
Schmitt Trigger, Filtered Inputs for Noise Suppression
•
Bidirectional Data Transfer Protocol
•
100 kHz (1.8V, 2.5V, 2.7V) and 400 kHz (5V) Compatibility
•
Write Protect Pin for Hardware Data Protection
•
32-Byte Page Write Mode (Partial Page Writes Allowed)
•
Self-Timed Write Cycle (10 ms max)
•
High Reliability
– Endurance: 1 Million Write Cycles
– Data Retention: 100 Years
– ESD Protection: >3,000V
•
Automotive Grade and Extended Temperature Devices Available
•
8-Pin JEDEC PDIP, 8-Pin and 14-Pin JEDEC SOIC, 8-Pin EIAJ SOIC,
and 8-pin TSSOP Packages
Description
The AT24C32/64 provides 32,768/65,536 bits of serial electrically erasable and pro-
grammable read only memory (EEPROM) organized as 4096/8192 words of 8 bits
each. The device’s cascadable feature allows up to 8 devices to share a common 2-
wire bus. The device is optimized for use in many industrial and commercial applica-
tions where low power and low voltage operation are essential. The AT24C32/64 is
available in space saving 8-pin JEDEC PDIP, 8-pin and 14-pin JEDEC SOIC, 8-pin
EIAJ SOIC, and 8-pin TSSOP packages and is accessed via a 2-wire serial interface.
In addition, the entire family is available in 5.0V (4.5V to 5.5V), 2.7V (2.7V to 5.5V),
2.5V (2.5V to 5.5V) and 1.8V (1.8V to 5.5V) versions.
2-Wire
Serial EEPROM
32K (4096 x 8)
64K (8192 x 8)
AT24C32
AT24C64
Rev. 0336F–08/98
2-Wire, 32K
Serial E
2
PROM
Pin Configurations
Pin Name Function
A0 - A2 Address Inputs
SDA Serial Data
SCL Serial Clock Input
WP Write Protect
8-Pin PDIP
1
2
3
4
8
7
6
5
A0
A1
A2
GND
VCC
WP
SCL
SDA
8-Pin SOIC
1
2
3
4
8
7
6
5
A0
A1
A2
GND
VCC
WP
SCL
SDA
14-Pin SOIC
1
2
3
4
5
6
7
14
13
12
11
10
9
8
NC
A0
A1
NC
A2
GND
NC
NC
VCC
WP
NC
SCL
SDA
NC
8-Pin TSSOP
1
2
3
4
8
7
6
5
A0
A1
A2
GND
VCC
WP
SCL
SDA
AT24C32/64
2
Block Diagram
Pin Description
SERIAL CLOCK (SCL):
The SCL input is used to positive
edge clock data into each EEPROM device and negative
edge clock data out of each device.
SERIAL DATA (SDA):
The SDA pin is bidirectional for
serial data transfer. This pin is open-drain driven and may
be wire-ORed with any number of other open-drain or open
collector devices.
DEVICE/PAGE ADDRESSES (A2, A1, A0):
The A2, A1
and A0 pins are device address inputs that are hard wired
or left not connected for hardware compatibility with
AT24C16. When the pins are hardwired, as many as eight
32K/64K devices may be addressed on a single bus sys-
tem (device addressing is discussed in detail under the
Device Addressing section). When the pins are not hard-
wired, the default A
2
, A
1
, and A
0
are zero.
WRITE PROTECT (WP):
The write protect input, when tied
to GND, allows normal write operations. When WP is tied
high to V
CC
, all write operations to the upper quandrant
(8/16K bits) of memory are inhibited. If left unconnected,
WP is internally pulled down to GND.
Memory Organization
AT24C32/64, 32K/64K SERIAL EEPROM:
The 32K/64K is
internally organized as 256 pages of 32 bytes each. Ran-
dom word addressing requires a 12/13 bit data word
address.
Absolute Maximum Ratings*
Operating Temperature.................................. -55
°
C to +125
°
C
*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..................................... -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
AT24C32/64
3
Note: 1. This parameter is characterized and is not 100% tested.
Notes: 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
= 25
°
C, f = 1.0 MHz, V
CC
= +1.8V.
Symbol Test Condition Max Units Conditions
C
I/O
Input/Output Capacitance (SDA) 8 pF V
I/O
= 0V
C
IN
Input Capacitance (A
0
, A
1
, A
2
, SCL) 6 pF V
IN
= 0V
DC Characteristics
Applicable over recommended operating range from: T
AI
= -40
°
C to +85
°
C, V
CC
= +1.8V to +5.5V, T
AC
= 0
°
C to +70
°
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 2.5 5.5 V
V
CC3
Supply Voltage 2.7 5.5 V
V
CC4
Supply Voltage 4.5 5.5 V
I
CC1
Supply Current V
CC
= 5.0V READ at 100 kHz 0.4 1.0 mA
I
CC2
Supply Current V
CC
= 5.0V WRITE at 100 kHz 2.0 3.0 mA
I
SB1
Standby Current
(1.8V option)
V
CC
= 1.8V
V
IN
= V
CC
or V
SS
0.1
µ
A
V
CC
= 5.5V 2.0
I
SB2
Standby Current
(2.5V option)
V
CC
= 2.5V
V
IN
= V
CC
or V
SS
0.5
µ
A
V
CC
= 5.5V 2.0
I
SB3
Standby Current
(2.7V option)
V
CC
= 2.7V
V
IN
= V
CC
or V
SS
0.5
µ
A
V
CC
= 5.5V 2.0
I
SB4
Standby Current
(5V option)
V
CC
= 4.5 - 5.5V V
IN
= V
CC
or V
SS
20 35
µ
A
I
LI
Input Leakage
Current
V
IN
= V
CC
or
V
SS
0.10 3.0
µ
A
I
LO
Output Leakage
Current
V
OUT
= V
CC
or
V
SS
0.05 3.0
µ
A
V
IL
Input Low Level
(1)
-0.6 V
CC
x 0.3 V
V
IH
Input High Level
(1)
V
CC
x 0.7 V
CC
+ 0.5 V
V
OL2
Output Low Level V
CC
= 3.0V I
OL
= 2.1 mA 0.4 V
V
OL1
Output Low Level V
CC
= 1.8V I
OL
= 0.15 mA 0.2 V
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

AT24C64W-10SI-2.5

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Manufacturer:
Description:
IC EEPROM 64K I2C 400KHZ 8SOIC
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