Part number Component Number Extra built-in Cost size (mm2) of I/O features ($) pins JN5148 8 x 8 21 2.4GHz transceiver, 20 12-bit ADC, 4 wire audio interface 9 x 9 32 - 64 Sub 1GHz transceiver, 5.00* 12-bit ADC, CC1101 MSP430F233 12 X12 48 12-bit ADC 2.50* MSP430F2616 12 x 12 or 48 or 64 12-bit ADC, 12-bit 5.85* 14 x14 DAC, DMA controller MSP430FG437 14 x 14 48 12-bit ADC, 2x 12-bit 5.15* DAC,3x Op Amps, Analog comparator, DMA, SVS, LCD driver CC1110 6 x 6 21 Sub 1GHz transceiver, 4.85* 12-bit ADC Table 1 MCU Comparison – (*) designates that the samples are available for free or purchase The Jennic JN5148 is a great MCU that could be used due to its small size, adequate number of I/O pins as well as its many useful built-in features, but its cost prevents it from being usable in this design. The next best choice is Texas Instrument CC430. This chip is ideal for the same reasons as the Jennic JN5148. What it lacks in built-in features it makes up for in number of I/O pins. In addition, the sub-1GHz transceiver is the preferred frequency for the design. The CC430 integrates a full sub-1GHz transceiver in one chip, smaller than a standard MSP430. This chip is a very useful and relatively new part to the market place, which might make obtaining the chip difficult. If it is unobtainable then a MSP430 and CC1101 will be used to take its place. Since the Texas Instruments parts are similar, the design can be changed later, if needed, without significant changes to the software. The PCB layout will, of course,
Part number Component size (mm2) Number of I/O pins Extra built-in features Cost ($) JN5148 8 x 8 21 2.4GHz transceiver, 12-bit ADC, 4 wire audio interface 20 9 x 9 32 - 64 Sub 1GHz transceiver, 12-bit ADC, CC1101 5.00* MSP430F233 12 X12 48 12-bit ADC 2.50* MSP430F2616 12 x 12 or 14 x14 48 or 64 12-bit ADC, 12-bit DAC, DMA controller 5.85* MSP430FG437 14 x 14 48 12-bit ADC, 2x 12-bit DAC,3x Op Amps, Analog comparator, DMA, SVS, LCD driver 5.15* CC1110 6 x 6 21 Sub 1GHz transceiver, 12-bit ADC 4.85* Table 1 – MCU Comparison (*) designates that the samples are available for free or purchase The Jennic JN5148 is a great MCU that could be used due to its small size, adequate number of I/O pins as well as its many useful built-in features, but its cost prevents it from being usable in this design. The next best choice is Texas Instrument CC430. This chip is ideal for the same reasons as the Jennic JN5148. What it lacks in built-in features it makes up for in number of I/O pins. In addition, the sub-1GHz transceiver is the preferred frequency for the design. The CC430 integrates a full sub-1GHz transceiver in one chip, smaller than a standard MSP430. This chip is a very useful and relatively new part to the market place, which might make obtaining the chip difficult. If it is unobtainable then a MSP430 and CC1101 will be used to take its place. Since the Texas Instruments parts are similar, the design can be changed later, if needed, without significant changes to the software. The PCB layout will, of course,
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