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Using the Renesas E8 for H8S/2633

Discussion in 'Embedded' started by robert.bielik, Nov 16, 2006.

  1. I have a board with a H8S/2633F which I program with a HMSE UPB
    (Universal Programming Boards), and now when needing to reproduce the
    whole setup, I cannot find a trace of the HMSE UPB anywhere. I simply
    cannot get hold of one... so I called Renesas and they recommended to
    use the E8 with FDT (Flash Development Toolkit) where I can specify
    which pins do what so that it can be interfaced with my board. However,
    the information on this is scarce at best, non-existant at worst... so
    Q is if someone has programmed H8S/26xx series of MPUs with the E8 and
    how the pinout of the programming interface looks like ??

    robert.bielik, Nov 16, 2006
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  2. robert.bielik

    Ken Asbury Guest


    I have a couple of H8S/2144 kits, complete with schematics,
    CDs and programming boards, left over from circa 2002-3
    that PBL hasn't yet marked for the dumpster.

    I don't have time to examine how they might relate to your
    H8S/26xx but might anything in them be of any help?

    Ken Asbury, Nov 16, 2006
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  3. On 16 Nov, in article
    Which used the RS232 (Com port) interface.
    E8 uses a JTAG 'like' interface, which I don't remember that device
    I doubt you can get the E8 to talk to the H8S/26xx, what you need to do
    is make a RS232 to TTL converter board and add the following

    1/ Manual jumpers to select boot mode onto the connector
    2/ A reset switch to the connector pin

    If needed I can search around for what the connector is as the onboard
    micro, will be difficult to clone.

    Download FDT or similar and just programme the device from a PC Com port
    having set jumpers for boot mode and reset the CPU.

    This will work for most H8 or H8S or other micros, the HMSE-UPB was
    an abomination of closed single source, short life time.
    Paul Carpenter, Nov 16, 2006
  4. Hi Paul,
    In the FDT manual, the E8 can be set in E8Direct mode, where it has
    regular TxD/RxD pins, along with general purpose outputs to set the MPU
    in BOOT mode and to activate the FWE pin. This requires you to specify
    in FDT what the output pins should be set to in BOOT mode and RESET
    mode (which I still don't really know what it is).

    Anyways 1, I tried it and the E8 has not been able to connect to the
    MPU, but I'm not sure yet if it is my fault or not, my guess is the

    Anyways 2, any schematic for the programming interface port for a
    H8S/26xx or even the 21xx series would be helpful.

    Also, on our board, there is a pin on the prog-iface (used with the
    UPB) called "PMode" and it is connected to P17 on the MPU. But in the
    MPU manual, I cannot see this pin having anything to do with
    programming, so why this pin is there really bakes my noodles...

    robert.bielik, Nov 17, 2006
  5. Hi Ken,
    Might very well be. Do you have the possibility to send the schematics
    by mail?

    robert.bielik, Nov 17, 2006
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