NSCore’s TwinBit™ is an embedded, true logic-based non-volatile memory solution with an extremely high endurance performance of 10K (PROGRAM) cycles.  TwinBit can be implemented seamlessly in CMOS logic processes, with particular ease in advanced nodes, and without additional masks or process steps.  The TwinBit series covers a memory size range of 64- to 512K-bits, making it suitable for analog trimming, security key storage and system switch of ASIC/ASSP.


  • Security Code Storage
  • Program Storage
  • Analog Trimming
  • Gamma Correction
  • Memory Repair
  • Feature Selection
  • Patch Code
  • Chip ID
  • DRM
  • HDMI Decode


  • Smallest Si area
  • Tamper-resident by invisible charge trap memory mechanism
  • Non-rewritable hardware safety lock
  • No charge pump required in read operation
  • Built-in-self-test circuit supports stress-free test environments.
  • All bits fully testable with conventional test equipments
  • Automotive grade data retention over 150 deg C.

Technology Comparison


                                      TwinBit                   eFLASH                1Poly EEPROM           

Bit Area                         1                              1                            100

Retention                      10 Year                  10 Year                  10 Year

P/E                                100K Cycle            10K Cycle              100K Cycle

Add. Mask                     None                      +10 Mask              None

Add. Process None        None                   Stacked Poly            None

Read Cycle                    50MHz                    50MHz                30MHz

Operational Temp.        150ºC                     150ºC                     85-150ºC

Storage                         150ºC                      150ºC                    85-150ºC

Program Voltage           5.5V                         10V                        20V

Read                              Byte                         Byte                      Byte

Program                        Byte/Page                Block                     Byte

Erase                             Byte/Block               Block                     Byte




                                                                      TwinBit                 eFLASH                       

Campatibility with Standard IPs                 Compatible            Not Compatible

Development TAT                                         Short                     Very Long

Manufacuring Cost                                      Low (+0%)             High (+30-50%)

Leading Edge Process                                  Available               Not Available



 Product Brief for Automotive-Grade TwinBit™ for TSMC0.18um Process