The followings are some of the features
on the hardware and software :
Fully CMOS static design
8-bit data bus
On chip ROM size : 512 words
Internal RAM size : 32 bytes
(25 general purpose registers, 7 special
registers)
36 single word instructions
14-bit instructions
2-level stacks
Operating voltage : 2.3V ~ 6.0 V
Operating frequency : 0 ~ 20 MHz
The most fast execution time is 200
ns under 20 MHz in all single cycle
instructions except the branch
instructions
Addressing modes include direct,
indirect and relative addressing