AT24C08 ATMEL Corporation, AT24C08 Datasheet

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AT24C08

Manufacturer Part Number
AT24C08
Description
Manufacturer
ATMEL Corporation
Datasheet

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Features
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
automotive applications where low-power and low-voltage operation are essential.
The AT24C01A/02/04/08/16 is available in space-saving 8-lead PDIP and 8-lead
JEDEC SOIC packages and is accessed via a two-wire serial interface. In addition,
the entire family is available in 5.0V (4.5V to 5.5V) and 2.7V (2.7V to 5.5V) versions.
Table 1. Pin Configuration
Pin Name
A0 - A2
SDA
SCL
WP
NC
Medium-voltage and Standard-voltage Operation
Internally Organized 128 x 8 (1K), 256 x 8 (2K), 512 x 8 (4K),
1024 x 8 (8K) or 2048 x 8 (16K)
Two-wire Serial Interface
Schmitt Trigger, Filtered Inputs for Noise Suppression
Bi-directional Data Transfer Protocol
100 kHz (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
Partial Page Writes are Allowed
Self-timed Write Cycle (5 ms max)
High-reliability
8-lead PDIP and 8-lead JEDEC SOIC Packages
– 5.0 (V
– 2.7 (V
– Endurance: 1 Million Write Cycles
– Data Retention: 100 Years
CC
CC
= 4.5V to 5.5V)
= 2.7V to 5.5V)
Function
Address Inputs
Serial Data
Serial Clock Input
Write Protect
No Connect
GND
A0
A1
A2
GND
A0
A1
A2
8-lead PDIP
8-lead SOIC
1
2
3
4
1
2
3
4
8
7
6
5
8
7
6
5
VCC
WP
SCL
SDA
VCC
WP
SCL
SDA
Note: 1. This device is not recom-
Two-wire
Automotive
Serial EEPROM
1K (128 x 8)
2K (256 x 8)
4K (512 x 8)
8K (1024 x 8)
16K (2048 x 8)
AT24C01A
AT24C02
AT24C04
AT24C08
AT24C16
2. This device is not recom-
mended for new designs.
Please refer to AT24C08A.
mended for new designs.
Please refer to AT24C16A.
3256F–SEEPR–10/04
(1)
(2)
1

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AT24C08 Summary of contents

Page 1

... Serial EEPROM 1K (128 (256 (512 (1024 x 8) 16K (2048 x 8) AT24C01A AT24C02 AT24C04 (1) AT24C08 (2) AT24C16 Note: 1. This device is not recom- mended for new designs. Please refer to AT24C08A. 2. This device is not recom- mended for new designs. Please refer to AT24C16A. 3256F–SEEPR–10/04 1 ...

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 DC Output Current........................................................ 5.0 mA Figure 1. Block Diagram Pin Description ...

Page 3

... Memory Organization 3256F–SEEPR–10/04 The AT24C08 only uses the A2 input for hardwire addressing and a total of two 8K devices may be addressed on a single bus system. The A0 and A1 pins are no connects. The AT24C16 does not use the device address pins, which limits the number of devices on a single bus to one ...

Page 4

Table 3. Pin Capacitance Applicable over recommended operating range from T Symbol Test Condition C Input/Output Capacitance (SDA) I/O C Input Capacitance ( Note: 1. This parameter is characterized and is not 100% tested. Table ...

Page 5

Table 5. AC Characteristics Applicable over recommended operating range from T 100 pF (unless otherwise noted). Symbol Parameter f Clock Frequency, SCL SCL t Clock Pulse Width Low LOW t Clock Pulse Width High HIGH t Noise Suppression Time I ...

Page 6

Bus Timing Figure 2. SCL: Serial Clock, SDA: Serial Data I/O Write Cycle Timing Figure 3. SCL: Serial Clock, SDA: Serial Data I/O SCL SDA 8th BIT WORDn Note: 1. The write cycle time t is the time from a ...

Page 7

Figure 4. Data Validity Figure 5. Start and Stop Definition Figure 6. Output Acknowledge 3256F–SEEPR–10/04 AT24C01A/02/04/08/16 7 ...

Page 8

Device Addressing Write Operations AT24C01A/02/04/08/16 8 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 (see Figure 7 on ...

Page 9

Read Operations 3256F–SEEPR–10/04 ing 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 ...

Page 10

Figure 8. Byte Write Figure 9. Page Write (* = DON’T CARE bit for 1K) Figure 10. Current Address Read AT24C01A/02/04/08/16 10 3256F–SEEPR–10/04 ...

Page 11

Figure 11. Random Read (* = DON’T CARE bit for 1K) Figure 12. Sequential Read 3256F–SEEPR–10/04 AT24C01A/02/04/08/16 11 ...

Page 12

AT24C01A Ordering Information Ordering Code AT24C01A-10PA-5.0C AT24C01A-10SA-5.0C AT24C01A-10PA-2.7C AT24C01A-10SA-2.7C 8P3 8-lead, 0.300" Wide, Plastic Dual Inline Package (PDIP) 8S1 8-lead, 0.150" Wide, Plastic Gull Wing Small Outline (JEDEC SOIC) −5.0 Standard Operation (4.5V to 5.5V) −2.7 Low-voltage (2.7V to 5.5V) ...

Page 13

AT24C02 Ordering Information Ordering Code AT24C02-10PA-5.0C AT24C02N-10SA-5.0C AT24C02-10PA-2.7C AT24C02N-10SA-2.7C 8P3 8-lead, 0.300" Wide, Plastic Dual Inline Package (PDIP) 8S1 8-lead, 0.150" Wide, Plastic Gull Wing Small Outline (JEDEC SOIC) −5.0 Standard Operation (4.5V to 5.5V) −2.7 Low-voltage (2.7V to 5.5V) ...

Page 14

AT24C04 Ordering Information Ordering Code AT24C04-10PA-5.0C AT24C04N-10SA-5.0C AT24C04-10PA-2.7C AT24C04N-10SA-2.7C 8P3 8-lead, 0.300" Wide, Plastic Dual Inline Package (PDIP) 8S1 8-lead, 0.150" Wide, Plastic Gull Wing Small Outline (JEDEC SOIC) −5.0 Standard Operation (4.5V to 5.5V) −2.7 Low-voltage (2.7V to 5.5V) ...

Page 15

... Ordering Code AT24C08-10PA-5.0C AT24C08N-10SA-5.0C AT24C08-10PA-2.7C AT24C08N-10SA-2.7C Note: 1. This device is not recommended for new designs. Please refer to AT24C08A. 8P3 8-lead, 0.300" Wide, Plastic Dual Inline Package (PDIP) 8S1 8-lead, 0.150" Wide, Plastic Gull Wing Small Outline (JEDEC SOIC) −5.0 Standard Operation (4.5V to 5.5V) − ...

Page 16

AT24C16 Ordering Information Ordering Code AT24C16-10PA-5.0C AT24C16N-10SA-5.0C AT24C16-10PA-2.7C AT24C16N-10SA-2.7C Note: 1. This device is not recommended for new designs. Please refer to AT24C16A. 8P3 8-lead, 0.300" Wide, Plastic Dual Inline Package (PDIP) 8S1 8-lead, 0.150" Wide, Plastic Gull Wing ...

Page 17

Packaging Information 8P3 – PDIP Top View PLCS Side View Notes: 1. This drawing is for general information only; refer to JEDEC Drawing MS-001, Variation BA, for additional information. 2. Dimensions A and L are measured ...

Page 18

JEDEC SOIC 1 N Top View e D Side View Notes: 1. This drawing is for general information only; refer to EIAJ Drawing EDR-7320 for additional information. 2. Mismatch of the upper and lower dies and resin burrs ...

Page 19

... Atmel does not make any commitment to update the information contained herein. Atmel’s products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life. © Atmel Corporation 2004. All rights reserved. Atmel is the trademark of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others. Atmel Operations Memory ...

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