http://www.datasheet4u.com

900,000+ Datasheet PDF Search and Download

Datasheet4U offers most rated semiconductors datasheets pdf


ATMEL Corporation
ATMEL Corporation

AT24C32 Datasheet

2-Wire Serial EEPROM


AT24C32 Datasheet Preview


Features
Low-Voltage and Standard-Voltage Operation
– 2.7 (VCC = 2.7V to 5.5V)
– 1.8 (VCC = 1.8V to 5.5V)
Low-Power Devices (ISB = 2 µA at 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) Clock Rate
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
Automotive Grade and Extended Temperature Devices Available
8-Pin JEDEC PDIP, 8-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 JEDEC SOIC, 8-pin EIAJ SOIC,
and 8-pin TSSOP (AT24C64) packages and is accessed via a 2-wire serial interface.
In addition, the entire family is available in 2.7V (2.7V 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
Pin Configurations
Pin Name
A0 - A2
SDA
SCL
WP
Function
Address Inputs
Serial Data
Serial Clock Input
Write Protect
8-Pin PDIP
A0
A1
A2
GND
1
2
3
4
8 VCC
7 WP
6 SCL
5 SDA
8-Pin TSSOP
A0
A1
A2
GND
1
2
3
4
8 VCC
7 WP
6 SCL
5 SDA
8-Pin SOIC
A0
A1
A2
GND
1
2
3
4
8 VCC
7 WP
6 SCL
5 SDA
2-Wire, 32K
Serial E2PROM
Rev. 0336K–SEEPR–7/03
1
Page 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
Block Diagram
*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.
2 AT24C32/64
0336K–SEEPR–7/03
Page 2

AT24C32/64
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 system (device addressing is discussed in detail under the
Device Addressing section). When the pins are not hardwired, the default A2, A1, and A0
are zero.
WRITE PROTECT (WP): The write protect input, when tied to GND, allows normal write
operations. When WP is tied high to VCC, 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. Random word addressing requires a 12/13 bit data word
address.
0336K–SEEPR–7/03
3
Page 3

Pin Capacitance(1)
Applicable over recommended operating range from TA = 25°C, f = 1.0 MHz, VCC = +1.8V.
Symbol Test Condition
Max
CI/O
CIN
Note:
Input/Output Capacitance (SDA)
Input Capacitance (A0, A1, A2, SCL)
1. This parameter is characterized and is not 100% tested.
8
6
Units
pF
pF
Conditions
VI/O = 0V
VIN = 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,
VCC = +1.8V to +5.5V (unless otherwise noted).
Symbol Parameter
Test Condition
Min Typ Max Units
VCC1
Supply Voltage
1.8 5.5 V
VCC2
Supply Voltage
2.5 5.5 V
VCC3
Supply Voltage
2.7 5.5 V
VCC4
Supply Voltage
4.5 5.5 V
ICC1
Supply Current
VCC = 5.0V
READ at 100 kHz
0.4 1.0 mA
ICC2
Supply Current
VCC = 5.0V
WRITE at 100 kHz
2.0 3.0 mA
ISB1
Standby Current
(1.8V option)
VCC = 1.8V
VCC = 5.5V
VIN = VCC or VSS
0.1 µA
2.0
ISB2
Standby Current
(2.5V option)
VCC = 2.5V
VCC = 5.5V
VIN = VCC or VSS
0.5 µA
2.0
ISB3
Standby Current
(2.7V option)
VCC = 2.7V
VCC = 5.5V
VIN = VCC or VSS
0.5 µA
2.0
ISB4
Standby Current
(5V option)
VCC = 4.5 - 5.5V VIN = VCC or VSS
20 35 µA
ILI
Input Leakage
Current
VIN = VCC or VSS
0.10 3.0
µA
ILO
VIL
VIH
VOL2
VOL1
Note:
Output Leakage
Current
VOUT = VCC or VSS
Input Low Level(1)
Input High Level(1)
Output Low Level
VCC = 3.0V
IOL = 2.1 mA
Output Low Level
VCC = 1.8V
IOL = 0.15 mA
1. VIL min and VIH max are reference only and are not tested.
-0.6
VCC x 0.7
0.05
3.0
VCC x 0.3
VCC + 0.5
0.4
0.2
µA
V
V
V
V
4 AT24C32/64
0336K–SEEPR–7/03
Page 4
Part Number AT24C32
Manufactur ATMEL Corporation
Description 2-Wire Serial EEPROM
Total Page 19 Pages
PDF Download
AT24C32 datasheet
Download PDF File
AT24C32 datasheet
View Html for PC & Mobile


Related Datasheet

AT24C32 , AT24C32-10PC , AT24C32-10PC-1.8 , AT24C32-10PC-2.5 , AT24C32-10PC-2.7 , AT24C32-10PI , AT24C32-10PI-1.8 , AT24C32-10PI-2.5 , AT24C32-10PI-2.7 , AT24C32-10SC , AT24C32-10SC-1.8 , AT24C32-10SC-2.5 , AT24C32-10SC-2.7 , AT24C32-10SI , AT24C32-10SI-1.8 , AT24C32-10SI-2.5 , AT24C32-10SI-2.7 , AT24C32-10TC , AT24C32-10TC-1.8 , AT24C32-10TC-2.5 , AT24C32-10TC-2.7 , AT24C32-10TI , AT24C32-10TI-1.8 , AT24C32-10TI-2.5 , AT24C32-10TI-2.7 , AT24C32A , AT24C32A-10PI-1.8 , AT24C32A-10PI-2.7 , AT24C32A-10TI-1.8 , AT24C32A-10TI-2.7 , AT24C32A-10TU-1.8 , AT24C32A-10TU-2.7 , AT24C32AN-10SE-2.7 , AT24C32AN-10SI-1.8 , AT24C32AN-10SI-2.7 , AT24C32AN-10SQ-2.7 , AT24C32AN-10SU-1.8 , AT24C32AN-10SU-2.7 , AT24C32AW-10SI-1.8 , AT24C32AW-10SI-2.7 , AT24C32AY1-10YI-1.8 , AT24C32AY1-10YI-2.7 , AT24C32C , AT24C32D , AT24C32N-10SC , AT24C32N-10SC-1.8 , AT24C32N-10SC-2.5 , AT24C32N-10SC-2.7 , AT24C32N-10SI , AT24C32N-10SI-1.8 , AT24C32N-10SI-2.5 , AT24C32N-10SI-2.7 , AT24C32W-10SC , AT24C32W-10SC-1.8 , AT24C32W-10SC-2.5 , AT24C32W-10SC-2.7 , AT24C32W-10SI , AT24C32W-10SI-1.8 , AT24C32W-10SI-2.5 , AT24C32W-10SI-2.7 ,

site map

webmaste! click here

contact us

Buy Components