9 Feb 2010 0:55:29
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 Acqura now have Philips microcontrollers available for sale. If you need P89C668, P89C669, LPC76x or LPC900 family devices, check out our low MOQ's
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Take a look at our new forums. If you have a question about the 8xC51, LPC900, or MX families (or any 8051-related query) then ask your question here.
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| User dean2t has posted this comment in the General Forum |
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| Strange character appearing next to my LJMP Timer_1_INT ISR |
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A character that looks like a return/enter character is appearing in the left near the breakpoint setting diamond in my program. When I click the PLAY button, it jumps there, and halts, then I hit PLAY again, and it continues on. What is causing this?
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| Click here to see the whole discussion thread. |
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PDS51E |
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PDS51E Emulation System Motherboard |
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PDS51E is a high-performance universal motherboard which forms the basis for an affordable fully-featured in-circuit emulation system. In combination with a growing range of companion daughterboards (PDE series - such as the PDE51MX daughterboard) and various footprint adaptors (each available separately) it provides development support for Philips latest 8051-derived microcontroller variants, and in particular those variants based on Philips MX (Memory eXtension) core or variants having a wide- and/or low supply voltage.
The resulting emulation system allows complete control and tracing of execution of a user's program, and access to all registers and memory spaces of the target microcontroller, without consuming any device resources or introducing wait-states or other non-standard behaviour.
Features typically include:
- transparent real-time in-circuit emulation with wide/deep execution trace.
- flexible motherboard + daughterboard + adaptor architecture.
- sophisticated Windows debugger supporting all popular compilers.
- fast easy-to-install USB interface to host PC.
- 256k bytes of emulation memory for user code.
- 256k x 32 bits (or 128k x 64 bits) trace buffer with 12 digital input channels.
- programmable PLL-synthesised clock frequency (25kHz-100MHz, 0.1%).
- programmable power supply voltage (0-5.5V in 25mV steps).
- programmable current limit (0-250mA in 1mA steps).
- multiple breakpoint sources, unlimited execution address breakpoints.
- trigger output for synchronising external equipment with execution.
- completely 'soft' logic and firmware, free live updates via the web.
NOTE: The actual programmed supply voltage is limited by the emulator to the range specified by the manufacturer for the target microcontroller device selected. The upper clock frequency is not limited but operation beyond the frequency range specified by the manufacturer is not guaranteed.
The current limit applies to current supplied to the daughterboard from the programmable power supply. and (optionally) then to the user's target system. Some PDE-series daughterboards support neither the supply of power to the user's target, nor the current limit feature.
In some cases the PDS51E system will also emulate older devices supported originally by the earlier PDS51-Mk2A system but with the advantage of increased performance and functionality. Except in these cases, the PDS51-Mk2A system should be used for emulation of older devices.
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