Getting Started Manual 29
Appendix A. Specifications
Table A-1 lists the electrical, mechanical, and environmental specifications for the Jack-
rabbit board.
Table A-1. Jackrabbit Board Specifications
Parameter Specification
Board Size 3.50" × 2.50" × 0.94" (89 mm × 64 mm × 24 mm)
Humidity 5% to 95%, noncondensing
Input Voltage and Current
7.5 V to 25 V DC, 100 mA typical, 150 mA maximum, linear
regulator
Configurable I/O
44—28 independent
16 shared with onboard peripherals
3 additional shared with programming connector when
programming/debugging
Analog Inputs
One low-grade A/D input—input range 0 V to 3 V, 10-bit
resolution, 8-bit accuracy, average acquisition time 150 ms (165 ms
maximum) with 14.7 MHz clock
Analog Outputs Two filtered and buffered PWM outputs
Digital Outputs
Four high-current, high-voltage outputs—3 sink up to 200 mA and
35 V standoff
Clock 14.74 MHz
SRAM 128K (supports 32K–512K)
Flash EPROM 128K (supports 32K–512K)
Timers
Five 8-bit timers, one 10-bit timer with two match registers, five
timers are cascadable
Serial Ports
Four serial ports—two RS-232 or one RS-232 (with CTS/RTS) and
one RS-485
One 5 V CMOS-compatible line
Two serial ports can be clocked
Serial Rate Up to 1.84 MHz
Watchdog/Supervisor Yes
Time/Date Clock Yes
Backup Battery
Yes, 3 V lithium coin type, 950 mA-h, includes external battery
holder
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