Hello, I seen the C251 Development Tools, as in large programs RTOS is required; in C251, which RTOS we have to use; Same as RTX51 (Full) or not available.
Another Opinion. If a design requires a lot of bit banging and can exist in on chip memory, we look to the 8051 family. A big family of possible chips. If we need additional memory range and bit banging, we look to the 166 or rather the XC16x family. If we need some data processing, we look to the ARM devices. In all families, the chip costs are so close they seldom enter into the decision. The three chip families all have multi-source RTOS. Tool costs are a little higher for the ARM devices but good tools don't cost, they pay in time saved, etc. Bradford
Hello, Thanks for your comments; it help me lot; We are working on telecom project >> PABX; thus we required more memory; code space; the end products are very competitive in prices; with very less qty required. so prices also one of the major factor to decide; any way thanks a lot for your kind suggestion; Now i feel that 16 bit are better than ARM or 32 bit. for us it is comfortable to redesign the current hardware.