D-series adopted the latest high density embedded Flash technology which is built up with very small flash cells. This new eFlash technology not only can reduce the size of chip but also increase the operation speed.

Similary to other Microtech ROM-less product, D-series do not require ROM mask, user COS can be downloaded into the chip at the last production step. It is much more flexible and easier in inventory control.Similar to other Microtech Innovation’s ROM-less products, no ROM mask making is required for D-series. The card operating system (COS) can be loaded into the chip just before it is issued to the field. Memory Management Unit (MMU) with firewall technology and new security features allow multiple applications can be implemented on the same chip without compromise of security. Key features of D-series are highlighted below:

  • New embedded FLASH technology for better performance
  • Flexible – NVM can be partition into program or data by user with overwrite protection
  • Short cycle time – no ROM mask is needed
  • High speed operation to shorter the personalization time
  • Long battery life – low power GSM mode
  • Memory Management Unit with firewall – support supervisor mode and user mode for multiple application environment
  • Security features to minimize the risks of unauthorized access to data inside the card

CPU core8052 high speed CPU
NVM (Bytes)110K
RAM (Bytes)256+2048
Special features* 25MHz maximum internal bus frequency at 3V
* SCI data rate > 1Mbps
* Hardware CRC per ISO 13239 standard
* MMU with firewall
* Unique identification code
* True random number generator
* 3V to 5V +/- 10% operation
* Security protection features