AS3955-ASWF-S4

AS3955-ASWF-S4 Datasheet

AS3955

Part	Datasheet
AS3955-ASWF-S4	AS3955-ASWF-S4 (pdf)

Related Parts	Information
AS3955-ATDM-S4	AS3955-ATDM-S4
AS3955-ATDM-I4	AS3955-ATDM-I4
AS3955-AWLT-I4	AS3955-AWLT-I4
AS3955A-ATWT-S4	AS3955A-ATWT-S4
AS3955-ASWF-I4	AS3955-ASWF-I4

PDF Datasheet Preview
AS3955 NFC Forum Compliant Dynamic Tag AS3955 NFC Dynamic Tag IC is the ultimate solution to easily add NFC functionality to electronic devices. Thanks to a high sensitivity ISO14443A frontend and high integrated resonance capacitor, AS3955 offers standalone NFC passive tag functionality in a small footprint. Fast system integration and high speed data transfer are guaranteed by the available SPI and interfaces and by the optimized protocols Tunneling Mode and Extended Mode , allowing bidirectional communication between the device microcontroller and an external NFC compliant device or ISO14443A reader device PCD . AS3955 is able to operate fully powered by the RF field, without any external supply. This, combined with an advanced energy harvesting feature, greatly increases battery life time or even allows battery-less designs. AS3955 is used with an appropriate antenna coil connected to the terminals LC1 and LC2, and behaves as a standard passive ISO 14443A tag PICC . After the anti-collision protocol stage, based on configuration, AS3955 can operate as a standalone NFC Forum Type 2 Tag or, when tunneling mode is activated, as a bridge between the PCD and the microcontroller, e.g. to emulate a custom or standard ISO14443A Level 3 or Level 4 PICC or a NFC Forum tag. A configurable wake-up signal notifies the microcontroller on ongoing RF activities, in order to minimize overall power consumption. AS3955 includes an embedded EEPROM memory that can be accessed from the PCD through the RF link or from the microcontroller through the SPI or interfaces. Part or all memory can be protected by a 32-bit password, or permanently locked. AS3955 supports ISO 14443A up to Level 4 and is designed according to EMVCo requirements, to enable the emulation of contactless smart cards or NFC Forum compliant Type 2 or Type 4 Tags. AS3955 is designed for high reliability, and can operate in a wide power supply range from 1.65V to 5.5V, in a wide temperature range from -40 °C to 125 °C. EEPROM memory reaches automotive grade quality with endurance of 100,000 cycles and data retention of 10 years at 125 °C. Ordering Information and Content Guide appear at end of datasheet. ams Datasheet [v1-04] 2016-Feb-03 Page 1 Document Feedback AS3955 − General Description Figure 1 Added Value of Using AS3955 Key Benefits & Features The benefits and features of AS3955, NFC Forum Compliant Dynamic Tag are listed below: • NFC Forum compliance for full interoperability • NFC Forum compliance • ISO 14443A compliance up to Level 4 • Type 2 Tag standalone functionality • Type 4 Tag emulation with external MCU • Operating frequency at MHz • Bit rate at 106 kbps • 7-byte UID • Choice of memory size based on application • 2 kbit EEPROM 216 bytes of user data or • 4 kbit EEPROM 472 bytes of user data • Allows zero-power standby • Enables long battery life time, or battery-less designs • Allows fast antenna prototyping ISO antenna classes 1 to 6 • Configurable passive wake-up interrupt • Energy harvesting to supply up to 5mA 4.5V regulated • 45 pF integrated resonant capacitor • Design flexibility, easy integration. Fits requirements for various embedded applications • 3/4-wire SPI slave interface up to 5 Mbps • slave interface up to 1 Mbps • Design flexibility, easy integration • Fits supply requirements for various applications, including industrial • Support for multiple applications, and storage of sensitive data • Programmable address • Wide interface supply range 1.65V to 5.5V • 32-bit password memory protection • High performance and robust data communication, allows custom protocols to be implemented • Tunneling and Extended modes for MCU communication • Consistent NFC behavior of battery supplied devices in e.g. pairing applications • Possibility to disable RF communication • Silent mode MCU power status detection , configurable between 1.42V and 3.65V • Configurable Chip Kill mode • Small outline, compatibility to common inlay and card manufacturing lines, surface-mount assembly • Sawn wafer • WL-CSP package • 10-pin MLPD 3x3mm package Page 2 Document Feedback ams Datasheet [v1-04] 2016-Feb-03 AS3955 − General Description AS3955 is suited to a wide range of applications, including • NFC connection handover Bluetooth , Bluetooth Low Energy, Wi-Fi pairing • Equipment setup, service and configuration • Firmware upgrades • Activity and status logging • Wireless authentication e.g. access control to buildings and equipment Typical Markets: Note s Pin 1=A1. ccc Coplanarity. All dimensions are in um. This applies to AWLT ordering codes. Page 92 Document Feedback Green ams Datasheet [v1-04] 2016-Feb-03 AS3955 − Package Drawings & Markings Figure 105 Package Outline Drawings Thin WL-CSP Note s Pin1 = A1. ccc coplanarity. All dimensions are in um. This applies to ATWT ordering codes. ams Datasheet [v1-04] 2016-Feb-03 Green Page 93 Document Feedback AS3955 − Package Drawings & Markings Figure 106 Package Marking WL-CSP 3955_S4 XXXX Figure 107 Package Code WL-CSP XXXX Tracecode Page 94 Document Feedback ams Datasheet [v1-04] 2016-Feb-03 AS3955 − Ordering & Contact Information Ordering & Contact Information Figure 108 Ordering Information Ordering Code AS3955-ATDM-S4 AS3955-ATDT-S4 AS3955-ATDM-I4 AS3955-ATDT-I4 AS3955-AWLT-S4 AS3955-AWLT-I4 AS3955-ASWF-S4 AS3955-ASWF-I4 AS3955-ATWT-S4 AS3955-ATWT-I4 AS3955-ATDM-S2 1 AS3955-ATDT-S2 1 AS3955-ATDM-I2 1 AS3955-ATDT-I2 1 AS3955-AWLT-S2 1 AS3955-AWLT-I2 1 AS3955-ASWF-S2 1 AS3955-ASWF-I2 1 Package MLPD WL-CSP WL-CSP Sorted wafer Sorted wafer Thin WL-CSP Thin WL-CSP MLPD WL-CSP WL-CSP Sorted wafer Sorted wafer Note s Will be available on request. Marking AS3955S4 AS3955I4 3955_S4 3955_I4 NA 3955_S4 3955_I4 AS3955S2 AS3955I2 3955_S2 3955_I2 NA Delivery Form Mini Reel Tape & Reel Mini Reel Tape & Reel Tape & Reel Tape & Reel Wafer Box Wafer Box Tape & Reel Tape & Reel Mini Reel Tape & Reel Mini Reel Tape & Reel Tape & Reel Tape & Reel Wafer Box Wafer Box Configuration SPI - EEPROM 4kbit SPI - EEPROM 4kbit - EEPROM 4kbit - EEPROM 4kbit SPI - EEPROM 4kbit - EEPROM 4kbit SPI - EEPROM 4kbit - EEPROM 4kbit SPI - EEPROM 4kbit - EEPROM 4kbit SPI - EEPROM 2kbit SPI - EEPROM 2kbit - EEPROM 2kbit - EEPROM 2kbit SPI - EEPROM 2kbit - EEPROM 2kbit SPI - EEPROM 2kbit - EEPROM 2kbit ams Datasheet [v1-04] 2016-Feb-03 Page 95 Document Feedback AS3955 − Ordering&ContactInformation Buy our products or get free samples online at Technical Support is available at Provide feedback about this document at For further information and requests, e-mail us at For sales offices, distributors and representatives, please visit: Headquarters ams AG Tobelbaderstrasse 30 8141 Premstaetten Austria, Europe Tel +43 0 3136 500 0 Website: Page 96 Document Feedback ams Datasheet [v1-04] 2016-Feb-03 AS3955 − RoHS Compliant & ams Green Statement RoHS Compliant & ams Green Statement RoHS The term RoHS compliant means that ams AG products fully comply with current RoHS directives. Our semiconductor products do not contain any chemicals for all 6 substance categories, including the requirement that lead not exceed by weight in homogeneous materials. Where designed to be soldered at high temperatures, RoHS compliant products are suitable for use in specified lead-free processes. ams Green RoHS compliant and no Sb/Br ams Green defines that in addition to RoHS compliance, our products are free of Bromine Br and Antimony Sb based flame retardants Br or Sb do not exceed by weight in homogeneous material . Important Information The information provided in this statement represents ams AG knowledge and belief as of the date that it is provided. ams AG bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. ams AG has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. ams AG and ams AG suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. ams Datasheet [v1-04] 2016-Feb-03 Page 97 Document Feedback Copyrights & Disclaimer AS3955 − Copyrights&Disclaimer Copyright ams AG, Tobelbader Strasse 30, 8141 Premstaetten, Austria-Europe. Trademarks Registered. All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. Devices sold by ams AG are covered by the warranty and patent indemnification provisions appearing in its General Terms of Trade. ams AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein. ams AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with ams AG for current information. This product is intended for use in commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are specifically not recommended without additional processing by ams AG for each application. This product is provided by ams AG “AS IS” and any express or implied warranties, including, but not limited to the implied warranties of merchantability and fitness for a particular purpose are disclaimed. ams AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of ams AG rendering of technical or other services. Page 98 Document Feedback ams Datasheet [v1-04] 2016-Feb-03 AS3955 − Document Status Document Status Document Status Product Status Definition Product Preview Pre-Development Information in this datasheet is based on product ideas in the planning phase of development. All specifications are design goals without any warranty and are subject to change without notice Preliminary Datasheet Pre-Production Information in this datasheet is based on products in the design, validation or qualification phase of development. The performance and parameters shown in this document are preliminary without any warranty and are subject to change without notice Datasheet Production Information in this datasheet is based on products in ramp-up to full production or full production which conform to specifications in accordance with the terms of ams AG standard warranty as given in the General Terms of Trade Datasheet discontinued Discontinued Information in this datasheet is based on products which conform to specifications in accordance with the terms of ams AG standard warranty as given in the General Terms of Trade, but these products have been superseded and should not be used for new designs ams Datasheet [v1-04] 2016-Feb-03 Page 99 Document Feedback 1-01 2015-Apr-29 to 1-02 2015-Dec-30 Updated Figure 10 Updated text under Energy Harvesting Updated text under NFC Device to MCU Data Flow Protocol Updated Figure 50 Updated Figure 51 Added Figure 56 Added Slave Address section Updated Figure 104 Updated Figure 107 1-02 2015-Dec-30 to 1-03 2016-Jan-28 Updated Figure 50 Updated Figure 51 Updated Application Information section Updated Figure 105 Updated Figure 108 1-03 2016-Jan-28 to 1-04 2016-Feb-03 Updated text under Using Tunneling Mode to Emulate a NFC Type 4 Tag Page 102 Document Feedback ams Datasheet [v1-04] 2016-Feb-03

PDF Datasheet Preview

AS3955

NFC Forum Compliant Dynamic Tag

AS3955 NFC Dynamic Tag IC is the ultimate solution to easily add NFC functionality to electronic devices. Thanks to a high sensitivity ISO14443A frontend and high integrated resonance capacitor, AS3955 offers standalone NFC passive tag functionality in a small footprint. Fast system integration and high speed data transfer are guaranteed by the available SPI and interfaces and by the optimized protocols Tunneling Mode and Extended Mode , allowing bidirectional communication between the device microcontroller and an external NFC compliant device or ISO14443A reader device PCD .

AS3955 is able to operate fully powered by the RF field, without any external supply. This, combined with an advanced energy harvesting feature, greatly increases battery life time or even allows battery-less designs.

AS3955 is used with an appropriate antenna coil connected to the terminals LC1 and LC2, and behaves as a standard passive ISO 14443A tag PICC . After the anti-collision protocol stage, based on configuration, AS3955 can operate as a standalone NFC Forum Type 2 Tag or, when tunneling mode is activated, as a bridge between the PCD and the microcontroller, e.g. to emulate a custom or standard ISO14443A Level 3 or Level 4 PICC or a NFC Forum tag. A configurable wake-up signal notifies the microcontroller on ongoing RF activities, in order to minimize overall power consumption.

AS3955 includes an embedded EEPROM memory that can be accessed from the PCD through the RF link or from the microcontroller through the SPI or interfaces. Part or all memory can be protected by a 32-bit password, or permanently locked.

AS3955 supports ISO 14443A up to Level 4 and is designed according to EMVCo requirements, to enable the emulation of contactless smart cards or NFC Forum compliant Type 2 or Type 4 Tags.

AS3955 is designed for high reliability, and can operate in a wide power supply range from 1.65V to 5.5V, in a wide temperature range from -40 °C to 125 °C. EEPROM memory reaches automotive grade quality with endurance of 100,000 cycles and data retention of 10 years at 125 °C.
Ordering Information and Content Guide appear at end of datasheet.
ams Datasheet [v1-04] 2016-Feb-03

Page 1 Document Feedback

AS3955 − General Description

Figure 1 Added Value of Using AS3955

Key Benefits & Features

The benefits and features of AS3955, NFC Forum Compliant Dynamic Tag are listed below:
• NFC Forum compliance for full interoperability
• NFC Forum compliance
• ISO 14443A compliance up to Level 4
• Type 2 Tag standalone functionality
• Type 4 Tag emulation with external MCU
• Operating frequency at MHz
• Bit rate at 106 kbps
• 7-byte UID
• Choice of memory size based on application
• 2 kbit EEPROM 216 bytes of user data or
• 4 kbit EEPROM 472 bytes of user data
• Allows zero-power standby
• Enables long battery life time, or battery-less designs
• Allows fast antenna prototyping ISO antenna classes 1 to 6
• Configurable passive wake-up interrupt
• Energy harvesting to supply up to 5mA 4.5V
regulated
• 45 pF integrated resonant capacitor
• Design flexibility, easy integration. Fits requirements for various embedded applications
• 3/4-wire SPI slave interface up to 5 Mbps
• slave interface up to 1 Mbps
• Design flexibility, easy integration
• Fits supply requirements for various applications, including industrial
• Support for multiple applications, and storage of sensitive data
• Programmable address
• Wide interface supply range 1.65V to 5.5V
• 32-bit password memory protection
• High performance and robust data communication, allows custom protocols to be implemented
• Tunneling and Extended modes for MCU communication
• Consistent NFC behavior of battery supplied devices in e.g. pairing applications
• Possibility to disable RF communication
• Silent mode MCU power status detection , configurable between 1.42V and 3.65V
• Configurable Chip Kill mode
• Small outline, compatibility to common inlay and card manufacturing lines, surface-mount assembly
• Sawn wafer
• WL-CSP package
• 10-pin MLPD 3x3mm package

Page 2 Document Feedback
ams Datasheet [v1-04] 2016-Feb-03

AS3955 − General Description

AS3955 is suited to a wide range of applications, including
• NFC connection handover Bluetooth , Bluetooth Low Energy, Wi-Fi pairing
• Equipment setup, service and configuration
• Firmware upgrades
• Activity and status logging
• Wireless authentication e.g. access control to buildings
and equipment

Typical Markets:
Note s Pin 1=A1. ccc Coplanarity. All dimensions are in um. This applies to AWLT ordering codes.

Page 92 Document Feedback

Green
ams Datasheet [v1-04] 2016-Feb-03

AS3955 − Package Drawings & Markings

Figure 105 Package Outline Drawings Thin WL-CSP
Note s Pin1 = A1. ccc coplanarity. All dimensions are in um. This applies to ATWT ordering codes.
ams Datasheet [v1-04] 2016-Feb-03

Green

Page 93 Document Feedback

AS3955 − Package Drawings & Markings

Figure 106 Package Marking WL-CSP
3955_S4 XXXX

Figure 107 Package Code WL-CSP

XXXX

Tracecode

Page 94 Document Feedback
ams Datasheet [v1-04] 2016-Feb-03
AS3955 − Ordering & Contact Information
Ordering & Contact Information
Figure 108 Ordering Information
Ordering Code

AS3955-ATDM-S4 AS3955-ATDT-S4 AS3955-ATDM-I4 AS3955-ATDT-I4 AS3955-AWLT-S4 AS3955-AWLT-I4 AS3955-ASWF-S4 AS3955-ASWF-I4 AS3955-ATWT-S4 AS3955-ATWT-I4 AS3955-ATDM-S2 1 AS3955-ATDT-S2 1 AS3955-ATDM-I2 1 AS3955-ATDT-I2 1 AS3955-AWLT-S2 1 AS3955-AWLT-I2 1 AS3955-ASWF-S2 1 AS3955-ASWF-I2 1

Package

MLPD WL-CSP WL-CSP Sorted wafer Sorted wafer Thin WL-CSP Thin WL-CSP MLPD WL-CSP WL-CSP Sorted wafer Sorted wafer

Note s Will be available on request.

Marking

AS3955S4 AS3955I4 3955_S4 3955_I4

NA 3955_S4 3955_I4 AS3955S2 AS3955I2 3955_S2 3955_I2 NA

Delivery Form

Mini Reel Tape & Reel Mini Reel Tape & Reel Tape & Reel Tape & Reel Wafer Box Wafer Box Tape & Reel Tape & Reel Mini Reel Tape & Reel Mini Reel Tape & Reel Tape & Reel Tape & Reel Wafer Box Wafer Box

Configuration

SPI - EEPROM 4kbit SPI - EEPROM 4kbit - EEPROM 4kbit - EEPROM 4kbit SPI - EEPROM 4kbit - EEPROM 4kbit SPI - EEPROM 4kbit - EEPROM 4kbit SPI - EEPROM 4kbit - EEPROM 4kbit SPI - EEPROM 2kbit SPI - EEPROM 2kbit - EEPROM 2kbit - EEPROM 2kbit SPI - EEPROM 2kbit - EEPROM 2kbit SPI - EEPROM 2kbit - EEPROM 2kbit
ams Datasheet [v1-04] 2016-Feb-03

Page 95 Document Feedback
AS3955 − Ordering&ContactInformation

Buy our products or get free samples online at Technical Support is available at Provide feedback about this document at For further information and requests, e-mail us at For sales offices, distributors and representatives, please visit:

Headquarters ams AG Tobelbaderstrasse 30 8141 Premstaetten Austria, Europe

Tel +43 0 3136 500 0 Website:

Page 96 Document Feedback
ams Datasheet [v1-04] 2016-Feb-03

AS3955 − RoHS Compliant & ams Green Statement

RoHS Compliant & ams Green Statement

RoHS The term RoHS compliant means that ams AG products fully comply with current RoHS directives. Our semiconductor products do not contain any chemicals for all 6 substance categories, including the requirement that lead not exceed by weight in homogeneous materials. Where designed to be soldered at high temperatures, RoHS compliant products are suitable for use in specified lead-free processes.
ams Green RoHS compliant and no Sb/Br ams Green defines that in addition to RoHS compliance, our products are free of Bromine Br and Antimony Sb based flame retardants Br or Sb do not exceed by weight in homogeneous material .

Important Information The information provided in this statement represents ams AG knowledge and belief as of the date that it is provided. ams AG bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. ams AG has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. ams AG and ams AG suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
ams Datasheet [v1-04] 2016-Feb-03

Page 97 Document Feedback

Copyrights & Disclaimer

AS3955 − Copyrights&Disclaimer

Copyright ams AG, Tobelbader Strasse 30, 8141 Premstaetten, Austria-Europe. Trademarks Registered. All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner.

Devices sold by ams AG are covered by the warranty and patent indemnification provisions appearing in its General Terms of Trade. ams AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein. ams AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with ams AG for current information. This product is intended for use in commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are specifically not recommended without additional processing by ams AG for each application. This product is provided by ams AG “AS IS” and any express or implied warranties, including, but not limited to the implied warranties of merchantability and fitness for a particular purpose are disclaimed.
ams AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of ams AG rendering of technical or other services.

Page 98 Document Feedback
ams Datasheet [v1-04] 2016-Feb-03

AS3955 − Document Status

Document Status

Document Status Product Status

Definition

Product Preview

Pre-Development

Information in this datasheet is based on product ideas in the planning phase of development. All specifications are design goals without any warranty and are subject to change without notice

Preliminary Datasheet

Pre-Production

Information in this datasheet is based on products in the design, validation or qualification phase of development. The performance and parameters shown in this document are preliminary without any warranty and are subject to change without notice

Datasheet

Production

Information in this datasheet is based on products in ramp-up to full production or full production which conform to specifications in accordance with the terms of ams AG standard warranty as given in the General Terms of Trade

Datasheet discontinued

Discontinued

Information in this datasheet is based on products which conform to specifications in accordance with the terms of ams AG standard warranty as given in the General Terms of Trade, but these products have been superseded and should not be used for new designs
ams Datasheet [v1-04] 2016-Feb-03

Page 99 Document Feedback
1-01 2015-Apr-29 to 1-02 2015-Dec-30 Updated Figure 10 Updated text under Energy Harvesting Updated text under NFC Device to MCU Data Flow Protocol Updated Figure 50 Updated Figure 51 Added Figure 56 Added Slave Address section Updated Figure 104 Updated Figure 107
1-02 2015-Dec-30 to 1-03 2016-Jan-28 Updated Figure 50 Updated Figure 51 Updated Application Information section Updated Figure 105 Updated Figure 108
1-03 2016-Jan-28 to 1-04 2016-Feb-03 Updated text under Using Tunneling Mode to Emulate a NFC Type 4 Tag
Page 102 Document Feedback
ams Datasheet [v1-04] 2016-Feb-03

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived AS3955-ASWF-S4 Datasheet file may be downloaded here without warranties.

Datasheet ID: AS3955-ASWF-S4 519732