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atmel:n76e003 [2019/09/28 21:28] – minerva9 | atmel:n76e003 [2019/10/07 14:06] – minerva9 | ||
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Had kinda hoped that somebody out there might have written up a guide on how to use this board with the BASCOM-8051 BASIC compiler but a decent ' | Had kinda hoped that somebody out there might have written up a guide on how to use this board with the BASCOM-8051 BASIC compiler but a decent ' | ||
- | So, a few notes on how this might work. As things stand (Sept 2019), some parts are ordered and a bit of research is started. As and when the parts arrive and can be played with, notes will be added here. N.B. To date, I've not even been able to program the device! | + | So, a few notes on how this might work. As things stand (Oct 2019), some parts are ordered and a bit of research is started. As and when the parts arrive and can be played with, notes will be added here. N.B. To date, I've not even been able to program the device! |
The chip is a 20 pin surface mount part. Manufacturer datasheet (a 273 page .pdf) can be found [[https:// | The chip is a 20 pin surface mount part. Manufacturer datasheet (a 273 page .pdf) can be found [[https:// | ||
+ | Asserted that my dev board hasn't been setup with a serial bootloader, so I'll have to await the arrival of the ' | ||
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+ | Note: Whilst the above picture is a good overview, it doesn' | ||
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The board that I have (as pictured above) measures about 42mm x 30mm. It's pretty small, yet space has been made for four M3 mounting holes. | The board that I have (as pictured above) measures about 42mm x 30mm. It's pretty small, yet space has been made for four M3 mounting holes. | ||
- | The chip is centrally positioned. This board has a Mini-B USB connector fitted. Seems that this is just used to feed 5V to the board - the data lines on the connector don't seem to be hooked up to anything. A surface mounted LED lights up when power is applied via the Micro-B. The other LED on the board is attached (via a resistor) to port pin P15 - the Jumper ' | + | The chip is centrally positioned. This board has a mini-B USB connector fitted. Seems that this is just used to feed 5V to the board - the data lines on the connector don't seem to be hooked up to anything. A surface mounted LED lights up when power is applied via the mini-B. The other LED on the board is attached (via a resistor) to port pin P15 - the Jumper ' |
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The chip can work at supply voltages between 2.4V and 5.5V. The board uses a AMS1117 3.3V regulator to drop the 5V USB fed line. Not sure why they bothered, but there we have it. I've seen a variant of this board that is fitted with a 5V/3.3V selector switch. | The chip can work at supply voltages between 2.4V and 5.5V. The board uses a AMS1117 3.3V regulator to drop the 5V USB fed line. Not sure why they bothered, but there we have it. I've seen a variant of this board that is fitted with a 5V/3.3V selector switch. | ||
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- | === A few words about the key feature | + | === A few words about the key features |
- | Key Features: | ||
Core | Core | ||
- 1T 8051 processor | - 1T 8051 processor | ||
- | - Max frequency up to16 MHz | + | - Max frequency up to 16MHz |
- Wide operating voltage: 2.4V to 5.5V | - Wide operating voltage: 2.4V to 5.5V | ||
- Temperature range: -40℃ to 105℃ | - Temperature range: -40℃ to 105℃ | ||
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- One I²C up to 400 kHz | - One I²C up to 400 kHz | ||
Clock Control | Clock Control | ||
- | - < 2% deviation16 | + | - < 2% deviation 16 MHz Internal RC oscillator |
- 10 kHz Internal RC oscillator | - 10 kHz Internal RC oscillator | ||
Part No. | Part No. | ||
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=== Some ideas === | === Some ideas === | ||
- | This chip has both user program and bootloader areas. It should be possible to use the Nuvotron | + | This chip has both user program and bootloader areas. It should be possible to use the Nuvoton |
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- | ToDo: Need to find out if the board comes pre-supplied with a bootloader. | + | ToDo: |
+ | * Need to find out if the board comes pre-supplied with a bootloader. | ||
+ | * A small enclosure will need to be milled to hold this part. | ||
=== Some links === | === Some links === |