AT21CS01-SSHM11-T Datasheet AT21CS01-SSHM11-T, AT21CS01-STUM14-T, AT21CS01-SSHM17-T | P4-P6

Table of Contents

Features.......................................................................................................................... 1

Packages.........................................................................................................................1

Package Types (not to scale).......................................................................................... 2

Description.......................................................................................................................2

System Configuration Using Single-Wire Serial EEPROMs............................................3

Block Diagram................................................................................................................. 3

1. Electrical Characteristics........................................................................................... 6

1.1. Absolute Maximum Ratings

(1)

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

1.2. AT21CS01/11 DC and AC Operating Range................................................................................6

1.3. AT21CS01 DC Characteristics

(1)

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

1.4. AT21CS11 DC Characteristics

(1)

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

1.5. AT21CS01/11 AC Characteristics.................................................................................................8

2. Pin Descriptions.......................................................................................................11

2.1. No Connect.................................................................................................................................11

2.2. Serial Input and Output...............................................................................................................11

3. Device Operation and Communication....................................................................12

3.1. Single-Wire Bus Transactions.................................................................................................... 12

4. Device Addressing and I

C Protocol Emulation...................................................... 18

4.1. Memory Organization................................................................................................................. 18

5. Available Opcodes...................................................................................................20

5.1. EEPROM Access (Opcode Ah)..................................................................................................20

5.2. Security Register Access (Opcode Bh)...................................................................................... 20

5.3. Lock Security Register (Opcode 2h).......................................................................................... 20

5.4. ROM Zone Register Access (Opcode 7h)..................................................................................20

5.5. Freeze ROM Zone State (Opcode 1h)....................................................................................... 21

5.6. Manufacturer ID Read (Opcode Ch).......................................................................................... 21

5.7. Standard Speed Mode (Opcode Dh)..........................................................................................21

5.8. High-Speed Mode (Opcode Eh)................................................................................................. 21

6. Write Operations......................................................................................................22

6.1. Device Behavior During Internal Write Cycle............................................................................. 22

6.2. Byte Write...................................................................................................................................22

6.3. Page Write..................................................................................................................................23

6.4. Writing to the Security Register..................................................................................................23

6.5. Locking the Security Register.....................................................................................................24

6.6. Setting the Device Speed...........................................................................................................25

AT21CS01/AT21CS11

Datasheet

DS20005857A-page 4

7. Read Operations..................................................................................................... 27

7.1. Current Address Read within the EEPROM...............................................................................27

7.2. Random Read within the EEPROM........................................................................................... 28

7.3. Sequential Read within the EEPROM........................................................................................ 28

7.4. Read Operations in the Security Register.................................................................................. 29

7.5. Manufacturer ID Read................................................................................................................30

8. ROM Zones............................................................................................................. 32

8.1. ROM Zone Size and ROM Zone Registers................................................................................ 32

8.2. Programming and Reading the ROM Zone Registers................................................................32

8.3. Device Response to a Write Command Within an Enabled ROM Zone.................................... 34

9. Device Default Condition from Microchip................................................................ 36

10. Packaging Information.............................................................................................37

10.1. Package Marking Information.....................................................................................................37

11. Revision History.......................................................................................................42

The Microchip Web Site................................................................................................ 43

Customer Change Notification Service..........................................................................43

Customer Support......................................................................................................... 43

Product Identification System........................................................................................44

Microchip Devices Code Protection Feature................................................................. 45

Legal Notice...................................................................................................................45

Trademarks................................................................................................................... 45

Quality Management System Certified by DNV.............................................................46

Worldwide Sales and Service........................................................................................47

AT21CS01/AT21CS11

Datasheet

DS20005857A-page 5

1. Electrical Characteristics

1.1 Absolute Maximum Ratings

(1)

Temperature under bias -55°C to +125°C

Storage temperature -65°C to +150°C

Voltage on any pin with respect to ground -0.6V to V

PUP

+0.5V

DC output current 15.0 mA

Note:

1. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage 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 are not implied.

Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

1.2 AT21CS01/11 DC and AC Operating Range

AT21CS01 AT21CS11

Operating Temperature (Case) Industrial Temperature Range -40°C to +85°C -40°C to +85°C

PUP

Voltage tied to SI/O Voltage Range 1.7V to 3.6V 2.7V to 4.5V

1.3 AT21CS01 DC Characteristics

(1)

Parameter Symbol Minimum Typical

(2)

Maximum Units Test Conditions

Pull-up Voltage V

PUP

1.7 — 3.6 V High-Speed

mode

2.7 — 3.6 V Standard Speed

mode

Pull-up Resistance R

PUP

130 — 200 Ω V

PUP

= 1.7V

0.2 — 1.8 kΩ V

PUP

= 2.7V

0.33 — 4 kΩ V

PUP

= 3.6V

Active Current, Read I

— 0.08 0.3 mA V

PUP

= 3.6V;

SI/O = V

PUP

Active Current, Write I

— 0.20 0.5 mA V

PUP

= 3.6V

Standby Current I

— 0.6 1.5 µA V

PUP

= 1.8V

(3)

;

SI/O = V

PUP

— 0.7 2.5 µA V

PUP

= 3.6V

Input Low Level

(3)(4)

–0.6 — 0.5 V

Input High Level

(3)(4)

PUP

x 0.7 — V

PUP

+ 0.5 V

AT21CS01/AT21CS11

Datasheet

DS20005857A-page 6

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P18 P19-P21 P22-P24 P25-P27 P28-P30 P31-P33 P34-P36 P37-P39 P40-P42 P43-P45 P46-P47

AT21CS01-SSHM11-T

Mfr. #:

Buy AT21CS01-SSHM11-T

Manufacturer:

Microchip Technology / Atmel

Description:

EEPROM SEEPROM, 1K, SW - 1.7-3.6V, 125Kbps, Ind Tmp, 8-SOIC

Lifecycle:

New from this manufacturer.

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AT21CS01-SSHM11-T

AT21CS01-SSHM11-T

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