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BOARD LAYOUT
POWER SUPPLY CIRCUIT
MOD-ZIGBEE may be power supplied in different ways: 2.4V - 3.6V via EXT_PWR;
via ICSP connector (useful for debugging); via BAT connector with +3V Lithium
battery (CR2032).
The programmed board power consumption is about 30mA with RF transceiver
active, and 10µA in deep sleep mode.
CLOCK CIRCUIT
Crystal Quartz 20 MHz connected to MRF24J40 pin 33 (OSC2) and pin 34 (OSC1).
RESET CIRCUIT
MOD-ZIGBEE reset circuit includes PIC18F26K20 pin 1 (MCLR#/VPP/RE3), R1
(10k) – pull-up, C21 (ZD8.2V/0.2W), R2 (330 Ohm), ICSP connector pin 1 and RST
button.
Page 11 of 17
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