This TTP controller is an integrated device which implements functionalities and features described in the SAE AS6003 Standard. It is designed using the DO 254-compliant C2NF chip IP model and is commercially available in its third generation. Application notes and Datasheet are available on-line.

SAE AS6003 compliant communication controllers can be directly ordered at TTTech. Please contact

Mature TTTech TTP silicon solutions

Standard TTP controllers are readily available for cross industry applications. Examples of successful applications include modular and distributed control systems in the Boeing 787 Dreamliner and the Airbus A380 as well as engine control in the Lockheed Martin F-16 and the Aermacchi M-346 as well as fly-by-wire systems on Embraer 450/500 and on Bombardier CSeries. The maturity and stability of the TTP protocol is demonstrated by the fact that TTP controllers have been available on the market since 1998. Since 2011 TTP is also an open SAE industry standard i.e. AS6003. TTTech's TTP solutions are fully compliant to this standard.

DO-254 level A certifiable silicon and IP for safety-critical applications

TTP supports the development of distributed, hard real-time, safety-critical and fault-tolerant systems for aerospace and cross industry applications. The TTP silicon and chip IP has been designed to meet aerospace requirements in compliance with DO-254 and DO-178B Level A and got certified within the Airbus A380 project.

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Partner Statement

"Since we released our first TTP product in 1998, the TTP controller family has greatly increased our market strength in the field of  aerospace applications."

Franz Faschinger, General Manager Industry & Medical Business Unit, ams

Key Benefits

  • Dual-channel controller for redundant data transfers
  • Dedicated controller supporting TTP (time-triggered protocol class C)
  • Suited for dependable distributed real-time systems with guaranteed response time
  • Asynchronous data rate up to 5 Mbit/s (MFM/Manchester)
  • Synchronous data rate 5 to 25 Mbit/s
  • Bus interface (speed, encoding) for each channel selectable independently
  • 40 MHz main clock with support for 10 MHz crystal, 10 MHz oscillator or 40 MHz oscillator
  • 16 MHz bus guardian clock with support for 16 MHz crystal or 16 MHz oscillator
  • Single power supply 3.3V, 0.35 µm CMOS process
  • Full automotive temperature range (-40ºC to 125ºC)
  • 16k x 16 SRAM for message, status, control area (communication network interface) and for scheduling information (MEDL)
  • 4k x 16 (plus parity) instruction code RAM for protocol execution code
  • Data sheet conforms to protocol revision 2.04
  • 16k x 16 instruction code ROM containing startup execution code and deprecated protocol code revision 1.00
  • 16 Bit non-multiplexed asynchronous host CPU interface
  • 16 Bit RISC architecture
  • Software tools, design support, development boards available
  • Certification support package according to RTCA/DO-254 DAL A available
  • 80 pin LQFP80 Package

Application Notes

AN116 Waveform and Time Difference Capturing with C2NF's TTP Manchester Encoding
AN118 MFM Physical Layer for TTP/C Appnote: Calculating Time Skew Requirements
AN120 Receiver Bug 001 in AS8202NF
AN123 Host Read Accesses Speedup in AS8202NF
AN124 Maximal Data-Rates of TTTech Systems
AN134 Reception Scheme Changed for Ignoring IFG Traffic / Transformer Noise during Synchronized Operation
AN136 Changed Transformer Noise Tolerance in Manchester Mode in AS8202NF
AN145 TTP/C Protocol Binary Release 2.04 for the AS8202NF Controller
AN146 2nd Bang Hold-Off Implementation Approach
AN147 AS8202NF / C2NF - CRC Calculation
AN148 Comments on Dead/Deactivated Code in TASM Software V2.04 of the AS8202NF
AN150 AS8202NF TASM Software V2.04 MFM RS485 Bug
AN151 AS8202NF (TTP/C-C2NF Controller) Connected to MII Transceiver
AN152 Data Bus Instability by Read Access to the Last Word in Page in AS8202NF
AN153 TTP/C Controller AS8202NF User Constraints Document
AN154 AS8202NF Host View of Membership during Controller Acknowledgment Phase
AN155 AS8202NF Big Bang Configuration Constraints
AN156 Application Constraints Using AS8202NF Timer Interrupt
AN157 Constraints using MFM Encoding on AS8202NF
AN158 Constraints read access of last word in a memory page of the AS8202NF
D-001-AN05-002Protocol binary update to version 2.05


AS8202NF PLL lock detection circuitry indicates unjustified PLL-unlock signal


TTPController Deactivation Constraints


Impact of TTPController Deactivation Constraints (D-CHIP-AN-10-002) [2] on TTP middleware implementations