31 Jul 2010 7:11:22
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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 justakid has posted this comment in the Language Tools Forum |
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| need assembler for 8051 |
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I want to use a 8051 in my school project and I need a cheap or free assembler program.
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| Click here to see the whole discussion thread. |
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PDB557 |
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PDS51 Daughterboard for the P8xC557 |
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The PDB557 is a versatile bondout-based daughterboard which forms the basis for an affordable fully-featured in-circuit emulation system. In combination with a PDS51-Mk2A motherboard it emulates the 8xC557, 558, 559 and 560 variants, and can be used to support development with similar microcontrollers from other manufacturers.
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 include:
- transparent real-time in-circuit emulation with execution trace.
- flexible motherboard + daughterboard + adaptor architecture.
- sophisticated Windows debugger supporting all popular compilers.
- execution up to 15 MHz (6-clock) or 30 MHz (12-clock) at a 5V supply (see note)
- 64k bytes of emulation memory for user code.
- 28k x 32 bits real-time trace buffer with 12 digital input channels.
- programmable PLL-synthesised clock frequency.
- multiple breakpoint sources, unlimited execution address breakpoints.
- trigger output for synchronising external equipment with execution.
- footprint adapter for QFP80 device package - the QFP80 footprint adapter will also accept a P87557/558/559/560 device in the QFP80 package once emulation is no longer required..
NOTE: Execution speed is conservatively rated - the PDB557 daughterboard is tested during production at higher speeds and will typically run at 17/34 MHz.
The PDB557 daughterboard can be used with both PDS51-Mk2A and PDS51-Mk2 motherboards. It is not compatible with the earlier PDS51 motherboard since this lacks support for the PLL-synthesised clock feature.
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