Digi BL1800 user manual Table A-1. Jackrabbit Board Specifications

Table A-1lists the electrical, mechanical, and environmental specifications for the Jackrabbit boards.

Table A-1. Jackrabbit Board Specifications

Parameter	BL1800		BL1810	BL1820
Microprocessor	Rabbit 2000 @ 29.5 MHz		Rabbit 2000 @ 14.74 MHz
Flash EPROM	256K		128K
	(supports 128K–512K)		(supports 128K–512K)
SRAM			128K
			(supports 32K–512K)
Backup Battery	3 V lithium coin type, 950 mA·h,			None
	supports real-time clock and SRAM
Digital Inputs	6, CMOS-level			7, CMOS-level
	4 CMOS-level plus		4 CMOS-level plus	5 CMOS-level plus
	4 high-power outputs—3		4 high-power outputs—3	4 high-power outputs—3
Digital Outputs	sink up to 1 A and 30 V		sink up to 200 mA and	sink up to 200 mA and
	each, 1 sources up to		30 V each, 1 sources up	30 V each, 1 sources up
	500 mA		to 100 mA	to 100 mA
Configurable I/O	14 CMOS-level: 8 are bytewide, 6 are by bit			15 CMOS-level:
				8 are bytewide, 7 are by bit
Analog Inputs	One low-grade A/D input—input range 0.1 V to 2.8 V,
	9-bit resolution, 8-bit accuracy, 10 samples/s
Analog Outputs	Two 9-bit filtered and buffered PWM outputs,
	one 0.1–2.8 V DC, one 0.7–3.5 V DC, update rate 50 Hz
	Up to four serial ports:
	• two RS-232 or one RS-232 (with CTS/RTS) rated at 15 kV ESD
Serial Ports	• one RS-485 rated at 15 kV ESD (RS-485 driver not installed on BL1820)
	• one 5 V CMOS-compatible programming port
	Two serial ports (A and B) can be clocked.
Serial Rate	Max. burst rate = CLK/32 (async)
	Max. sustained rate = CLK/64
Connectors	Two 2 × 20, 2 mm IDC headers
Real-Time Clock			Yes
Timers	Five 8-bit timers (four cascadable from the first)
	and one 10-bit timer with two match registers
Watchdog/Supervisor			Yes
Power	8–40 V DC, 1.2 W max.,		7.5–25 V DC, 100 mA, linear regulator
	switching regulator
Operating Temperature			–40°C to +70°C
Humidity		5% to 95%, noncondensing
Board Size	2.50" × 3.50" × 0.76"		2.50" × 3.50" × 0.94"	2.50" × 3.50" × 0.63"
	(64 mm × 89 mm × 19 mm)		(64 mm × 89 mm × 24 mm)	(64 mm × 89 mm × 16 mm)

User’s Manual 59