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Features

• Low-voltage and Standard-voltage Operation

–2.7(V

=2.7Vto5.5V)

–1.8(V

=1.8Vto5.5V)

• Internally Organized 128 x 8 (1K), 256 x 8 (2K), 512 x 8 (4K),

1024 x 8 (8K) or 2048 x 8 (16K)

• 2-wire Serial Interface

• Schmitt Trigger, Filtered Inputs for Noise Suppression

• Bi-directional Data Transfer Protocol

• 100 kHz (1.8V, 2.5V, 2.7V) and 400 kHz (5V) Compatibility

• Write Protect Pin for Hardware Data Protection

• 8-byte Page (1K, 2K), 16-byte Page (4K, 8K, 16K) Write Modes

• PartialPageWritesareAllowed

• 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-lead PDIP, 8-lead JEDEC SOIC, 8-lead MAP and 8-lead TSSOP Packages

Description

The AT24C01A/02/04/08/16 provides 1024/2048/4096/8192/16384 bits of serial elec-

trically erasable and programmable read-only memory (EEPROM) organized as

128/256/512/1024/2048 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 AT24C01A/02/04/08/16 is available in space-saving 8-pin PDIP,

8-lead JEDEC SOIC, 8-lead MAP and 8-lead TSSOP 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

1K(128x8)

2K(256x8)

4K(512x8)

8K (1024 x 8)

16K (2048 x 8)

AT24C01A

AT24C02

AT24C04

AT24C08

AT24C16

Rev. 0180I–SEEPR–10/02

Pin Configurations

Pin Name Function

A0 - A2 Address Inputs

SDA Serial Data

SCL Serial Clock Input

WP Write Protect

NC No Connect

8-lead SOIC

GND

VCC

SCL

SDA

8-pin PDIP

GND

VCC

SCL

SDA

8-lead TSSOP

GND

VCC

SCL

SDA

8-lead MAP

Bottom View

VCC

SCL

SDA

GND

Summary of content (22 pages)

PAGE 1
Features • Low-voltage and Standard-voltage Operation • • • • • • • • • • • • – 2.7 (VCC = 2.7V to 5.5V) – 1.8 (VCC = 1.8V to 5.5V) Internally Organized 128 x 8 (1K), 256 x 8 (2K), 512 x 8 (4K), 1024 x 8 (8K) or 2048 x 8 (16K) 2-wire Serial Interface Schmitt Trigger, Filtered Inputs for Noise Suppression Bi-directional Data Transfer Protocol 100 kHz (1.8V, 2.5V, 2.
PAGE 2
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 *NOTICE: Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device.
PAGE 3
AT24C01A/02/04/08/16 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 bi-directional for serial data transfer. This pin is open-drain driven and may be wire-ORed with any number of other open-drain or opencollector devices. DEVICE/PAGE ADDRESSES (A2, A1, A0): The A2, A1 and A0 pins are device address inputs that are hard wired for the AT24C01A and the AT24C02.
PAGE 4
Pin Capacitance(1) Applicable over recommended operating range from TA = 25°C, f = 1.0 MHz, VCC = +1.8V. Symbol Test Condition CI/O CIN Note: Max Units Conditions Input/Output Capacitance (SDA) 8 pF VI/O = 0V Input Capacitance (A 0, A1, A2, SCL) 6 pF VIN = 0V 1. This parameter is characterized and is not 100% tested. 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.
PAGE 5
AT24C01A/02/04/08/16 AC Characteristics Applicable over recommended operating range from TA = -40°C to +85°C, VCC = +1.8V to +5.5V, CL = 1 TTL Gate and 100 pF (unless otherwise noted). 2.7-, 2.5-, 1.8-volt Min Max 5.0-volt Symbol Parameter Min fSCL Clock Frequency, SCL tLOW Clock Pulse Width Low 4.7 1.2 µs tHIGH Clock Pulse Width High 4.0 0.6 µs tI Noise Suppression Time(1) tAA Clock Low to Data Out Valid 0.1 tBUF Time the bus must be free before a new transmission can start(1) 4.
PAGE 6
Device Operation CLOCK and DATA TRANSITIONS: The SDA pin is normally pulled high with an external device. Data on the SDA pin may change only during SCL low time periods (refer to Data Validity timing diagram). Data changes during SCL high periods will indicate a start or stop condition as defined below. START CONDITION: A high-to-low transition of SDA with SCL high is a start condition which must precede any other command (refer to Start and Stop Definition timing diagram).
PAGE 7
AT24C01A/02/04/08/16 Bus Timing SCL: Serial Clock, SDA: Serial Data I/O Write Cycle Timing SCL: Serial Clock, SDA: Serial Data I/O tWR(1) Note: 1. The write cycle time tWR is the time from a valid stop condition of a write sequence to the end of the internal clear/write cycle.
PAGE 8
Data Validity Start and Stop Definition Output Acknowledge 8 AT24C01A/02/04/08/16 0180I–SEEPR–10/02
PAGE 9
AT24C01A/02/04/08/16 Device Addressing The 1K, 2K, 4K, 8K and 16K EEPROM devices all require an 8-bit device address word following a start condition to enable the chip for a read or write operation (refer to Figure 1). The device address word consists of a mandatory one, zero sequence for the first four most significant bits as shown. This is common to all the EEPROM devices. The next 3 bits are the A2, A1 and A0 device address bits for the 1K/2K EEPROM.
PAGE 10
ACKNOWLEDGE POLLING: Once the internally timed write cycle has started and the EEPROM inputs are disabled, acknowledge polling can be initiated. This involves sending a start condition followed by the device address word. The read/write bit is representative of the operation desired. Only if the internal write cycle has completed will the EEPROM respond with a zero allowing the read or write sequence to continue.
PAGE 11
AT24C01A/02/04/08/16 Figure 1. Device Address Figure 2. Byte Write Figure 3.
PAGE 12
Figure 4. Current Address Read Figure 5. Random Read (* = DON’T CARE bit for 1K) Figure 6.
PAGE 13
AT24C01A/02/04/08/16 AT24C01A Ordering Information Ordering Code Package AT24C01A-10PI-2.7 AT24C01A-10SI-2.7 AT24C01A-10TI-2.7 AT24C01AY1-10YI-2.7 8P3 8S1 8A2 8Y1 Industrial (-40°C to 85°C) AT24C01A-10PI-1.8 AT24C01A-10SI-1.8 AT24C01A-10TI-1.8 AT24C01AY1-10YI-1.8 8P3 8S1 8A2 8Y1 Industrial (-40°C to 85°C) Note: Operation Range For 2.7V devices used in the 4.5V to 5.5V range, please refer to performance values in the AC and DC characteristics table. Package Type 8P3 8-pin, 0.
PAGE 14
AT24C02 Ordering Information Ordering Code Package AT24C02-10PI-2.7 AT24C02N-10SI-2.7 AT24C02-10TI-2.7 AT24C02Y1-10YI-2.7 8P3 8S1 8A2 8Y1 Industrial (-40°C to 85°C) AT24C02-10PI-1.8 AT24C02N-10SI-1.8 AT24C02-10TI-1.8 AT24C02Y1-10YI-1.8 8P3 8S1 8A2 8Y1 Industrial (-40°C to 85°C) Note: Operation Range For 2.7V devices used in the 4.5V to 5.5V range, please refer to performance values in the AC and DC characteristics table. Package Type 8P3 8-pin, 0.
PAGE 15
AT24C01A/02/04/08/16 AT24C04 Ordering Information Ordering Code Package AT24C04-10PI-2.7 AT24C04N-10SI-2.7 AT24C04-10TI-2.7 AT24C04Y1-10YI-2.7 8P3 8S1 8A2 8Y1 Industrial (-40°C to 85°C) AT24C04-10PI-1.8 AT24C04N-10SI-1.8 AT24C04-10TI-1.8 AT24C04Y1-10YI-1.8 8P3 8S1 8A2 8Y1 Industrial (-40°C to 85°C) Note: Operation Range For 2.7V devices used in the 4.5V to 5.5V range, please refer to performance values in the AC and DC characteristics table. Package Type 8P3 8-pin, 0.
PAGE 16
AT24C08 Ordering Information Ordering Code Package AT24C08-10PI-2.7 AT24C08N-10SI-2.7 AT24C08-10TI-2.7 AT24C08Y1-10YI-2.7 8P3 8S1 8A2 8Y1 Industrial (-40°C to 85°C) AT24C08-10PI-1.8 AT24C08N-10SI-1.8 AT24C08-10TI-1.8 AT24C08Y1-10YI-1.8 8P3 8S1 8A2 8Y1 Industrial (-40°C to 85°C) Note: Operation Range For 2.7V devices used in the 4.5V to 5.5V range, please refer to performance values in the AC and DC characteristics table. Package Type 8P3 8-pin, 0.
PAGE 17
AT24C01A/02/04/08/16 AT24C16 Ordering Information Ordering Code Package AT24C16-10PI-2.7 AT24C16N-10SI-2.7 AT24C16-10TI-2.7 AT24C16Y1-10YI-2.7 8P3 8S1 8A2 8Y1 Industrial (-40°C to 85°C) AT24C16-10PI-1.8 AT24C16N-10SI-1.8 AT24C16-10TI-1.8 AT24C16Y1-10YI-1.8 8P3 8S1 8A2 8Y1 Industrial (-40°C to 85°C) Note: Operation Range For 2.7V devices used in the 4.5V to 5.5V range, please refer to performance values in the AC and DC characteristics table. Package Type 8P3 8-pin, 0.
PAGE 18
Packaging Information 8P3 – PDIP E 1 E1 N Top View c eA End View COMMON DIMENSIONS (Unit of Measure = inches) D e D1 A2 A MIN NOM A2 0.115 0.130 0.195 b 0.014 0.018 0.022 5 b2 0.045 0.060 0.070 6 b3 0.030 0.039 0.045 6 c 0.008 0.010 0.014 D 0.355 0.365 0.400 D1 0.005 E 0.300 0.310 0.325 4 E1 0.240 0.250 0.280 3 SYMBOL A b2 L b3 b 4 PLCS Side View Notes: NOTE 0.210 0.100 BSC eA 0.300 BSC 0.115 2 3 3 e L MAX 0.130 4 0.150 2 1.
PAGE 19
AT24C01A/02/04/08/16 8S1 – JEDEC SOIC 3 2 1 H N Top View e B A D COMMON DIMENSIONS (Unit of Measure = mm) Side View A2 C L SYMBOL MIN NOM MAX A – – 1.75 B – – 0.51 C – – 0.25 D – – 5.00 E – – 4.00 e E End View NOTE 1.27 BSC H – – 6.20 L – – 1.27 Note: This drawing is for general information only. Refer to JEDEC Drawing MS-012 for proper dimensions, tolerances, datums, etc. 10/10/01 R 2325 Orchard Parkway San Jose, CA 95131 TITLE 8S1, 8-lead (0.
PAGE 20
8A2 – TSSOP 3 2 1 Pin 1 indicator this corner E1 E L1 N L Top View End View COMMON DIMENSIONS (Unit of Measure = mm) SYMBOL D A b MIN NOM MAX NOTE 2.90 3.00 3.10 2, 5 3, 5 E e A2 D 6.40 BSC E1 4.30 4.40 4.50 A – – 1.20 A2 0.80 1.00 1.05 b 0.19 – 0.30 e Side View L 0.65 BSC 0.45 L1 Notes: 0.60 0.75 1.00 REF 1. This drawing is for general information only. Refer to JEDEC Drawing MO-153, Variation AA, for proper dimensions, tolerances, datums, etc. 2.
PAGE 21
AT24C01A/02/04/08/16 8Y1 – MAP PIN 1 INDEX AREA A 1 3 2 4 PIN 1 INDEX AREA E1 D1 D L 8 6 5 b A1 E 7 e A COMMON DIMENSIONS (Unit of Measure = mm) SYMBOL MIN NOM MAX A – – 0.90 A1 0.00 – 0.05 D 4.70 4.90 5.10 E 2.80 3.00 3.20 D1 0.85 1.00 1.15 E1 0.85 1.00 1.15 b 0.25 0.30 0.35 e L NOTE 0.65 TYP 0.50 0.60 0.70 7/25/02 R 2325 Orchard Parkway San Jose, CA 95131 TITLE 8Y1, 8-lead (4.90 x 3.00 mm Body) MSOP Array Package (MAP) Y1 DRAWING NO. REV.
PAGE 22
Atmel Headquarters Atmel Operations Corporate Headquarters Memory 2325 Orchard Parkway San Jose, CA 95131 USA TEL 1(408) 441-0311 FAX 1(408) 487-2600 2325 Orchard Parkway San Jose, CA 95131 TEL 1(408) 441-0311 FAX 1(408) 436-4314 RF/Automotive Theresienstrasse 2 Postfach 3535 74025 Heilbronn, Germany TEL (49) 71-31-67-0 FAX (49) 71-31-67-2340 Microcontrollers Europe Atmel Sarl Route des Arsenaux 41 Case Postale 80 CH-1705 Fribourg Switzerland TEL (41) 26-426-5555 FAX (41) 26-426-5500 Asia Room 1219