AT24CS02A-STUM-T datasheet, PDF

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AT24CS02A-STUM-T: DescriptionEEPROM, 256X8, Serial, CMOS, PDSO5, 1.60 MM, GREEN, PLASTIC, MO-193AB, SOT23, 5-PINS; Categorystorage storage; File Size1MB，32 Pages; ManufacturerAtmel (Microchip)

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AT24CS02A-STUM-T Overview

EEPROM, 256X8, Serial, CMOS, PDSO5, 1.60 MM, GREEN, PLASTIC, MO-193AB, SOT23, 5-PINS

AT24CS02A-STUM-T Parametric

Parameter Name	Attribute value
Objectid	8062032415
package instruction	VSSOP,
Reach Compliance Code	unknown
ECCN code	EAR99
Other features	ALSO OPERATES AT MIN 1.7 V AT 100 KHZ
Maximum clock frequency (fCLK)	1 MHz
JESD-30 code	R-PDSO-G5
length	2.9 mm
memory density	2048 bit
Memory IC Type	EEPROM
memory width	8
Number of functions	1
Number of terminals	5
word count	256 words
character code	256
Operating mode	SYNCHRONOUS
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
organize	256X8
Package body material	PLASTIC/EPOXY
encapsulated code	VSSOP
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH
Parallel/Serial	SERIAL
Maximum seat height	1 mm
Serial bus type	I2C
Maximum supply voltage (Vsup)	3.6 V
Minimum supply voltage (Vsup)	2.5 V
Nominal supply voltage (Vsup)	3 V
surface mount	YES
technology	CMOS
Temperature level	INDUSTRIAL
Terminal form	GULL WING
Terminal pitch	0.95 mm
Terminal location	DUAL
width	1.6 mm
Maximum write cycle time (tWC)	5 ms

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AT24CS01A and AT24CS02A

C-Compatible (2-wire) Serial EEPROM with a

Unique, Factory Programmed 128-bit Serial Number and a

Permanently Lockable, Extended EEPROM Region

1-Kbit (128 x 8), 2-Kbit (256 x 8)

PRELIMINARY DATASHEET

Standard Features



Low-voltage Operation

= 1.7V to 3.6V

Internally Organized as 128 x 8 (1-Kbit) or 256 x 8 (2-Kbit)

C-Compatible (2-wire) Serial Interface

100kHz Standard Mode, 1.7V to 3.6V

400kHz Fast Mode, 1.7V to 3.6V

1MHz Fast Mode Plus (FM+), 2.5V to 3.6V



Schmitt Trigger, Filtered Inputs for Noise Suppression

Bidirectional Data Transfer Protocol

Write Protect Pin for Hardware Data Protection

Ultra Low Active Current (1mA max) and Standby Current (0.8μA max)

8-byte Page Write Mode

Partial Page Writes are Allowed

Self-timed Write Cycle (5ms max)

High-reliability

Endurance: 1,000,000 Write Cycles

Data Retention: 100 Years

8-lead JEDEC SOIC, 8-lead TSSOP, 8-pad UDFN, and 5-lead SOT23



Green Package Options (Lead-free/Halide-free/RoHS-compliant)

Die Sale Options: Wafer Form and Tape and Reel Available

Enhanced Features in the CS Serial EEPROM Series



All Standard Features Supported

Extended 32 byte EEPROM Region

Unique, Factory-programmed, 128-bit Serial Number in the First 16 bytes



Permanently Locked, Read-only Value



Stored in a Separate Memory Area



Guaranteed Unique Across Entire CS Series of Serial EEPROMs

Additional 16 bytes of EEPROM Provided to Store Critical User Data



Data in this region is user-programmable and can subsequently be

permanently write protected if desired without the use of an external high

voltage supply, thereby rendering this section of memory as read-only.



Ideal for applications that require protection of critical or sensitive

application data.

Atmel-8874A-SEEPROM-AT24CS01A-02A-Datasheet_012015

Description

The Atmel

AT24CS01A and AT24CS02A provide 1,024/2,048 bits of Serial Electrically Erasable and

Programmable Read-Only Memory (EEPROM) organized as 128/256 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. Additionally, the AT24CS01A/02A includes an Extended EEPROM region with an extra 256 bits of

EEPROM beyond the nominal 1-Kbit/2-Kbit EEPROM array. The Extended EEPROM is comprised of a

read-only section of 16 bytes and an additional user-programmable and section of 16 bytes. The

user-programmable section can be locked from further write operations at any point with a software sequence.

The Extended EEPROM section begins with a read-only section that contains a factory programmed,

guaranteed unique, 128-bit Serial Number. The time consuming step of performing and ensuring true

serialization of a product on a manufacturing line can be removed from the production flow by employing a

CS Series Serial EEPROM. The 128-bit Serial Number is programmed and permanently locked from future

writing during the Atmel production process. Further, this 128-bit location does not consume any of the user

read/write area of the 1-Kbit or 2-Kbit Serial EEPROM. The uniqueness of the serial number is guaranteed

across the entire CS Series of Serial EEPROMs, regardless of the size of the memory array or the type of

interface protocol. This means that as an application's need for memory size or interface protocol evolve in

future generations, any previously deployed serial number from any Atmel CS Series Serial EEPROM part will

remain valid.

Following the 128-bit read-only Serial Number is an additional 16 bytes of EEPROM organized as two 8-byte

page. This region of the Extended EEPROM is user-programmable, and if so desired, can later be permanently

write protected via a software sequence. Moreover, no external high-voltage is required to set this level of

protection. This user-programmable section of the Extended EEPROM is ideal for applications that require

irreversibly protection of critical or sensitive application data from ever being altered.

The AT24CS01A and AT24CS02A are available in space-saving 8-lead JEDEC SOIC, 8-lead TSSOP,

8-pad UDFN, and 5-lead SOT23 packages and are accessed via a 2-wire serial interface. Both devices fully

operate from 1.7V to 3.6V V

AT24CS01A and AT24CS02A [PRELIMINARY DATASHEET]

Atmel-8874A-SEEPROM-AT24CS01A-02A-Datasheet_012015

Ta b le of C o nte nts

Pin Descriptions and Pinouts

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Device Block Diagram and System Configuration

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Device Operation and Communication

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.1

3.2

Clock and Data Transition Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Start and Stop Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2.1

Start Condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2.2

Stop Condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Acknowledge and No-Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Standby Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Software Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3

3.4

3.5

Memory Organization

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.1

Device Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.1.1

Main 1-Kbit / 2-Kbit EEPROM Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.1.2

Extended EEPROM Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Write Operations

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

5.1

5.2

5.3

5.4

Byte Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Page Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Write Operations in the Extended EEPROM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Permanent Write Protection of the Extended EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.4.1

Lock Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.4.2

Check Lock Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Acknowledge Polling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Write Cycle Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Write Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.5

5.6

5.7

Read Operations

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

6.1

6.2

6.3

6.4

Current Address Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Random Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Sequential Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Read Operations in the Extended EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6.4.1

Address Pointer Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6.4.2

Serial Number Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Device Default Condition from Atmel

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Electrical Characteristics

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

8.1

8.2

8.3

8.4

8.5

8.6

8.7

Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DC and AC Operating Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power-Up Requirements and Reset Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8.5.1

Device Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pin Capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

EEPROM Cell Performance Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

AT24CS01A and AT24CS02A [PRELIMINARY DATASHEET]

Atmel-8874A-SEEPROM-AT24CS01A-02A-Datasheet_012015

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