Rabbit 2000 Dev Kit Getting Started

Appendix A. Reference Information

Appendix A provides the specifications and other useful information for the BL1810.

A.1 Electrical and Mechanical Specifications

Table A-1. BL1810 Specifications

Parameter	BL1810
Microprocessor	Rabbit 2000 @ 14.7 MHz
Flash EPROM	128K (supports 128K-512K)
SRAM	128K (supports 32K-512K)
Backup Battery	3 V lithium coin type, 950 mA·h, supports real-time clock and SRAM
Digital Inputs	6, CMOS-level
Digital Outputs	4 CMOS-level plus 4 high-power outputs--3 sink up to 200 mA and 30 V each, 1 sources up to 100 mA
Configurable I/O	14 CMOS-level: 8 are bytewide, 6 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
Serial Ports	Up to four serial ports: two RS-232 or one RS-232 (with CTS/RTS) rated at 15 kV ESD one RS-485 rated at 15 kV ESD 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	7.5-25 V DC, 100 mA, linear regulator
Operating Temperature	-40°C to +70°C
Humidity	5% to 95%, noncondensing
Board Size	2.50" × 3.50" × 0.94" (64 mm × 89 mm × 24 mm)

A.2 Header Pinout

Figure A-1. Pinout for BL1810 Headers J4 and J5

A.3 Jumper Configurations

Figure A-2 shows the header and jumper locations used to configure the various BL1810 options.

Figure A-2. Location of BL1810 Configurable Positions

Table A-2 lists the configuration options. 0 W surface mount resistors are used for all the header positions.

Table A-2. BL1810 Jumper Configurations 

Header	Description	Pins Connected		Factory Default
JP1	SRAM Size	n.c.	32K
		1-2	128K	×
		2-3	512K
JP2	Flash Memory Size	1-2	128K/256K	×
		2-3	512K
JP3	Flash Memory Bank Select	1-2	Normal Mode	×
		2-3	Bank Mode
--	HV3 Sinking/Sourcing	D21 R55	Sinking
		R56	Sourcing	×
--	RS-485 Bias and Termination Resistors (not installed on BL1820)	R17	Termination resistor	×
		R16 R18	Bias resistors	×

NOTE	Header JP3 is available only on BL1810s labeled 175-0255. These boards were introduced in 2003.

A.4 Use of Rabbit 2000 Parallel Ports

Figure A-3 shows the use of the Rabbit 2000 parallel ports. The BL1810 BL1810 has 24 general-purpose digital inputs/outputs available on headers J4 and J5--14 are bidirectional, six are inputs only, and four are outputs only, as shown in Figure A-3.

Figure A-3. BL1810 Subsystems