Advantages and disadvantages of Motorola 68HC11

1.Guys, could you pinpoint me the data sheet for this module.
2. Which one is better - 68HC11 @ PICs? Can you guys give me the advantages & disadvantages.

I'm building a project using either one on designing a device that may store messages. Could you guys help me on this?

Re: Motorola 68HC11

Motorolla is better because michrochip is relatively a new company around. PIC16 series of micros don't have code protection which is a major setback for commercial projects. Secondly PICs don't get along good in I2C applicaitons etc. Secondly Motoralla has a lot of flavours as compared to PICs

Re: Motorola 68HC11

Go with the PICs.
They are much faster than the 68HC11. And they do have code protection. I2C works OK on PICs.
The possible disadvantage of the PIC vs. the 68HC11 is the reduced instruction set, which can sometimes be a disadvantage, and some issues with the RAM banking scheme.

Re: Motorola 68HC11

I would go with thie PIC's. They do have fewer instructions, but that also makes them MUCH easier to program. They also do more instructions per clock cycle, and all but a few instructions execute in one cycle.

Motorola 68HC11

I would go with motorola. i guest it is easy to learn b'coz u can directly ask En. Nik Mohd Kamil all about MC68HC11. He has the data sheet and the good book related to this cip.

Re: Motorola 68HC11

I decided to use the motorola because it has more pins for me to connect i/p & o/p. And it's expandable.

Is it possible for me to program the chip to play music(ie mp3) at predetermined times? And if yes, what do i need?

How do i make the board able to memorise input (via keypad 3*4) and later display it(on a hd44780) at other times and not on the spot. ex : current time : 4.00pm , input message , display message at 11pm. ?

Thanx.

Re: Motorola 68HC11

Guys this is really important for me.. Help please..

Motorola 68HC11

Friend, we do not compare any microcontroller by their company names but we should select microcontroller based on their hardware architecture and IO capability. Generally, motorola 68HC controllers are CISC machine and PIC controllers are RISC machine. Thus, the ISA of both controllers make the ASM programming difference; different addressing mode and instruction set. For hardware functionality, they both have Timer/Counter, IO, HW Interrupt and etc, you can read from datasheets. The most important to select your microcontroller is, what is your application? Do you need a high-end controller or you like to have a low cost implementation. Next, you also need to consider, the appplication development enviroment, can you get necessary development tools from your work place or college? Well, read more from datasheet and define your project specifications and then select the right microcontroller based on your project requirements, definately cost is one of the important factor.

Added after 8 minutes:

Frined, to play MP3 through 68HC11 using software codec, yes, it s possible but only for very low sampling MP3 file. Do no forget decoding MP3 using DCT software loop is very slow and waht about time delay factor? Thus, it is advise you to get a MP3 chip and interface to the microcontroller where the microtroller is use for user interface and other functions. Let the MP3 chip does the decoding job than it will be fined. You can use a NVRAM for you project to keep some user data if you are decided not to power the system for all the time but only at certain selected period. MP3 hardware is not very expensive you can search web to get from some electronic shop. Hope I am helping you.

Re: Motorola 68HC11

hi , my friend.
MOTOROLA 68HC11 is best of PIC.
68HC11... series have meny intrrupt powerful such as "COP (Computer Operation Property) and Timers" and ... . and used in industrial project.

Re: Motorola 68HC11

Ok here is what i visualise my project by a mental model. It is a basic design without any extra add-ons (mp3s etc etc). Do you think that it is possible to be turned into an actual unit? What else do I need if not? What can be improved without changing the basic concept? Thanks for those who posed...

Re: Motorola 68HC11

Software Development for my project