Z-World BL1800 Operation & User’s Manual

43, Z-World BL1800 User’s Manual 39 B.2 Using the Prototyping Board The Prototyping Board is actually both a demonstration board and a prototyping board. As a demonstration board, it can be used to demonstrate the functionality of the Jackrabbit right out of the box without any modifications to …

37, User’s Manual 33 A.4 Use of Rabbit 2000 Parallel Ports Figure A-4 shows the use of the Rabbit 2000 parallel ports. The Jackrabbit has 27 general- purpose digital inputs/outputs available on headers J4 and J5—15 are bidirectional (one of which is used by the RS-485 chip on BL1800 and BL1810 …

23, User’s Manual 19 The resolution of the DA0 output depends on the smallest increment of time to change the on/off time (the time between 5 V and 0 V). The Jackrabbit uses the Rabbit 2000’s Port D control registers to clock out the signal at a timer timeout. The timer used is timer B. Timer B…

29, User’s Manual 25 2.7.3 Spectrum Spreader Jackrabbit boards that carry the CE mark have a Rabbit 2000 microprocessor that features a spectrum spreader, which helps to mitigate EMI problems. By default, the spectrum spreader is on automatically for Jackrabbit BL1810 and BL1820 boards t…

55, User’s Manual 51 C.3 Chip Select Circuit Figure C-7 shows a schematic of the chip select circuit. Figure C-7. Chip Select Circuit The current drain on the battery in a battery-backed circuit must be kept at a minimum. When the Jackrabbit board is not powered, the battery keeps the SRAM mem…