TK8xC51Rx2 Microcontroller

TK83C51RA2 – 8K ROM
TK87C51RA2 – 8K Flash
TK87C51RB2 – 16K Flash
TK87C51RC2 – 32K Flash
TK87C51RD2 – 64K Flash

General Description

The new Tekmos 8xC51Rx2 microcontroller is designed to replace all of the ROMless, ROM, and One-Time-Programmable (OTP) members of the 8051 family. In addition, since Tekmos uses Flash instead of EPROM, the Tekmos devices are re-programmable.

The TK8xC51Rx2 is based on the 8051- microcontroller architecture. The Flash version serves as a replacement for the 87C51RA2, 87C51RB2, 87C51RC2, and 87C51RD2 microcontrollers. The flash version can also serve as a replacement for many of the 89C51Rx2 devices. The TK8xC51Rx2 is also available in a masked ROM version.

The TK8xC51Rx2 contains four 8-bit bidirectional parallel ports, two external interrupt sources, three timer/counters, a serial port with a hardware interrupt capability and a frame error detect flag, power management, and a programmable counter array (PCA). These peripherals are supported by a multiple source, four level interrupt capability. The core processor contains 256 bytes of scratchpad RAM along with another 256 bytes of XRAM. Program storage is 8K, 16K, 32K, or 64Kbytes in size.

The use of the original instruction timing insures that the original code will continue to perform correctly while running in the Tekmos design. The performance advantages resulting from the 0.35u process allow the Tekmos part to replace all of the earlier version's speed grades. The use of a current process also insures the long term availability of this part.

Features