On-chip debugging for Hitachi flash micro

24 January 2001 Design Automation

Hitachi's E10T is a low cost on-chip debugging tool that provides debugging support for its low power 16 bit flash microcontroller, the H8/3664F. The device features a simple 5-pin interface which provides access to the on-chip debug system, enabling the user to set breakpoints on-chip and access a simple on-chip software trace facility.

The E10T is available in PCI and PCMCIA versions, and can be used in a users' target system, both in development and in the final production version. For example, the PCMCIA version could be used with a laptop to debug systems in operation off-site. The device uses a 5-pin interface on the H8/3664F - three I/O pins together with NMI and RESET functions.

The on-chip tool provides the user with a hardware breakpoint on address and data, a three level branch trace, single stepping at C and assembly level, and the ability to download applications and program on-chip flash. The HDI Source Level debugger gives the user high level debugging in C with C level, mixed or assembly level display options. It also provides the ability to run user code in realtime and to single step, with 'step-over', 'step into' and 'step out of' functions. Additionally, HDI offers a register display, a three level branch trace, C level watch-points and a memory window.

The H8/3664F is a low power flash microcontroller that offers 16 bit performance at a pricing level comparable to that of 8 bit devices, says the manufacturer. The device features peripherals which include on-chip communications capability, powerful integrated 16 bit timer and on-chip watchdog timer with built-in oscillator.

Avnet Kopp

(011) 444 2333

[email protected]

www.avnetkopp.co.za

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