H8S - Any thoughts ?

Question

I am looking into the H8S (renesas) micros since I understand I am to make use of these devices in a new role. I have previously used the H8 but this was on legacy systems or at least legacy controls within new systems but I am struggling to see what the key points are of this range. The H8S is the quicker end of the renesas product line, but still a little sluggish compared to say arm core devices , some nice peripherals... is there a H8S fan out there that can tell me what I am missing? I am not dissin' the range I am just trawling through the garbage that the marketing folk publish but havent yet come accross its real strenghts - why is this so popular ?

also is bdm available ?

what tools are available and which are the stronger ?

thanks in advance for any thought you care to publish.

Grant Edwards · Accepted Answer

A lot of features for the money/power.No, I think BDM is a Motorola thing.I use the gnu toolchain and am happy with it.-- Grant Edwards                   grante             Yow!  Boys, you have ALL                                  at               been selected to LEAVE th'                                           PLANET in 15 minutes!!

Paul Carpenter · Answer

On Saturday, in article           "Ben Midgley" wrote:Which H8 as there is H8300, H8300L, H8300H, H8300S, H8Tiny, H8300SX ranges.For a lot of my systems the peripherals and onboard size of Flash/RAM isgood enough for the task, and using GNU C is relatively easy. 32bit registersand arithmetic helps as well as the external address space where necessary.Several designs have had just the H8H and some newer ones H8S (generallyfaster clock than H8H and 3V) and possibly an external flash controllinguser interface and video processing hardware/PLD/FPGA. External memoryonly required for large video datasets live and Flash.If you go for SH (closer match to ARM) you can get JTAG on newer models.Various commercial compilers and GNU (see sig)Maight like to look at various links from site in sig.-- Paul Carpenter          |     PC Services              GNU H8 & mailing list info             For those web sites you hate

matthew.taylor · Answer

We use the 2378. It's a nice device. Lots of good peripherals. It hasseveral UARTS and 2 separate I2C channels. We are running the NucleusRTOS and coding in C++. The debugger we use is CodeLab from MentorGraphics, which is not the greatest. We use CodeLab because the Renesastool, HEW, is not RTOS aware.Ben Midgley wrote:makethisbut Iis thea H8Sthe rangepublish but

H8S - Any thoughts ?

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