Rabbit BL2020, User Manual

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User’s Manual 61
Table A-1 lists the electrical, mechanical, and environmental specifications for the BL2000.
Table A-1. BL2000 Specifications
Feature BL2000 BL2010 BL2020 BL2030
Microprocessor
Rabbit 2000
®
at 22.1 MHz
Ethernet Port 10Base-T, LNK and ACT LEDs None
Flash Memory 256K (standard)
SRAM 128K (standard)
Backup Battery
Panasonic CR2330 or equivalent 3 V lithium coin type, 265 mA·h
standard using onboard battery holder; optional 3 V, 950 mA·h
solder-in battery available; external battery connector
Digital Inputs
11 inputs hardware-configurable pull-up or pull-down,
± 36 V DC, switching threshold 2.4 V typical
Digital Outputs
10 outputs sinking or sourcing, +40 V DC,
200 mA maximum per channel (2 channels can sink up to 750 mA each)
Analog Inputs
Four 12-bit res.,
± 10 V DC, 1 M
Ω,
up to 4,000
samples/s
Four 10-bit res.,
± 10 V DC, 1 M
Ω,
up to 4,000
samples/s
Four 12-bit res.,
± 10 V DC, 1 M
Ω,
up to 4,000
samples/s
Four 10-bit res.,
± 10 V DC, 1 M
Ω,
up to 4,000
samples/s
Analog Outputs
Two 12-bit res.,
0–4 V DC,
update rate 12 kHz
None
Two 12-bit res.,
0–4 V DC,
update rate 12 kHz
None
Dual-Purpose Analog or Digital
Inputs
Five at 12
k
Ω
,
12-bit res.,
0–48 V DC
Seven at 12
k
Ω
,
10-bit res.,
0–48 V DC
Five at 12
k
Ω
,
12-bit res.,
0–48 V DC
Seven at 12
k
Ω
,
10-bit res.,
0–48 V DC
Relay Output
SPDT with snubbers
*
: 1 A @ 30 V DC, 300 mA @ 120 V AC
(uses one digital output)
max. contact settling time 4 ms
Serial Ports
4 serial ports:
•
two RS-232 or one RS-232 (with CTS/RTS)
•
one RS-485, onboard network termination and bias resistors
•
one 5 V CMOS-compatible programming port
Serial Rate
Max. burst rate = CLK/32
Max. sustained rate = CLK/64
Connectors
one RJ-45 (Ethernet)
one 2 × 5, 2 mm pitch (serial programming port)
one power jack for AC adapter
four 12-terminal screw connectors (14 AWG/1.5 mm
2
wire) for analog
and digital I/O, relay
Real-Time Clock Yes