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)
•Internally Organized 128 x 8
•2-Wire Serial Interface
•Bidirectional Data Transfer Protocol
•100 kHz (1.8V, 2.5V, 2.7V) and 400 kHz (5V) Compatibility
•4-Byte Page Write Mode
•Self-Timed Write Cycle (10 ms max)
•High Reliability
–Endurance: 1 Million Write Cycles
–Data Retention: 100 Years
–ESD Protection: >3000V
•Automotive Grade and Extended Temperature Devices Available
•8-Pin PDIP, 8-Pin MSOP, 8-Pin TSSOP and 8-Pin JEDEC SOIC Packages
Description
The AT24C01 provides 1024 bits of serial electrically erasable and programmable read only memory (EEPROM) organized as 128 words of 8 bits each. The device is optimized for use in many industrial and commercial applications where low power and low voltage operation are essential. The AT24C01 is available in space saving 8-pin PDIP, 8-pin MSOP, 8-pin TSSOP, and 8-pin JEDEC SOIC 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.
Pin Configurations |
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8-Pin MSOP |
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8-Pin TSSOP |
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Pin Name |
Function |
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NC |
1 |
8 |
VCC |
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NC |
No Connect |
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NC |
2 |
7 |
TEST |
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SDA |
Serial Data |
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NC |
3 |
6 |
SCL |
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SCL |
Serial Clock Input |
GND |
4 |
5 |
SDA |
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Test |
Test Input (GND or VCC) |
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8-Pin PDIP |
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8-Pin SOIC |
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NC |
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1 |
8 |
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VCC |
NC |
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1 |
8 |
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VCC |
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NC |
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2 |
7 |
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TEST |
NC |
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2 |
7 |
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TEST |
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NC |
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3 |
6 |
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SCL |
NC |
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3 |
6 |
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SCL |
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GND |
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4 |
5 |
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SDA |
GND |
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4 |
5 |
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SDA |
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2-Wire Serial |
EEPROM |
1K (128 x 8) |
AT24C01 |
Rev. 0134C–07/98 |
1 |
Absolute Maximum Ratings*
Operating Temperature |
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° |
*NOTICE: Stresses beyond those listed under “Absolute |
-55 C to +125 C |
Maximum Ratings” may cause permanent dam- |
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Storage Temperature ..................................... |
-65°C to +150°C |
age to the device. This is a stress rating only and |
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functional operation of the device at these or any |
Voltage on Any Pin |
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other conditions beyond those indicated in the |
with Respect to Ground ..................................... |
-1.0V to +7.0V |
operational sections of this specification is not |
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Maximum Operating Voltage |
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6.25V |
implied. Exposure to absolute maximum rating |
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conditions for extended periods may affect |
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DC Output Current |
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5.0 mA |
device reliability. |
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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.
Memory Organization
AT24C01, 1K SERIAL EEPROM: Internally organized with 128 pages of 1 byte each. The 1K requires a 7-bit data word address for random word addressing.
2 |
AT24C01 |
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AT24C01 |
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Pin Capacitance |
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Applicable over recommended operating range from TA = 25°C, f = 1.0 MHz, VCC = +1.8V. |
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Symbol |
Test Condition |
Max |
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Units |
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Condition |
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CI/O |
Input/Output Capacitance (SDA) |
8 |
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pF |
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VI/O = 0V |
CIN |
Input Capacitance (A0, A1, A2, SCL) |
6 |
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pF |
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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 |
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Parameter |
Test Condition |
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Min |
Typ |
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Max |
Units |
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VCC1 |
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Supply Voltage |
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1.8 |
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5.5 |
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V |
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VCC2 |
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Supply Voltage |
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2.5 |
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5.5 |
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V |
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VCC3 |
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Supply Voltage |
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2.7 |
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5.5 |
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V |
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VCC4 |
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Supply Voltage |
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4.5 |
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5.5 |
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V |
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ICC |
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Supply Current VCC = 5.0V |
READ at 100 KHz |
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0.4 |
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1.0 |
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mA |
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ICC |
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Supply Current VCC = 5.0V |
WRITE at 100 KHz |
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2.0 |
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3.0 |
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mA |
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ISB1 |
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Standby Current VCC = 1.8V |
VIN = VCC or VSS |
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0.6 |
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3.0 |
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μA |
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ISB2 |
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Standby Current VCC = 2.5V |
VIN = VCC or VSS |
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1.4 |
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4.0 |
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μA |
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ISB3 |
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Standby Current VCC = 2.7V |
VIN = VCC or VSS |
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1.6 |
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4.0 |
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μA |
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ISB4 |
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Standby Current VCC = 5.0V |
VIN = VCC or VSS |
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8.0 |
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18.0 |
μA |
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ILI |
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Input Leakage Current |
VIN = VCC or VSS |
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0.10 |
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3.0 |
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μA |
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ILO |
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Output Leakage Current |
VOUT = VCC or VSS |
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0.05 |
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3.0 |
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μA |
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V |
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Input Low Level(1) |
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-0.6 |
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V |
CC |
× |
0.3 |
V |
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IL |
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V |
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Input High Level(1) |
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V |
CC |
× |
0.7 |
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V |
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+ 0.5 |
V |
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IH |
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CC |
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VOL2 |
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Output Low Level VCC = 3.0V |
IOL = 2.1 mA |
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0.4 |
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V |
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VOL1 |
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Output Low Level VCC = 1.8V |
IOL = 0.15 mA |
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0.2 |
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V |
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Note: 1. |
VIL min and VIH max are reference only and are not tested. |
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3