20-101-1257 Rabbit Semiconductor, 20-101-1257 Datasheet - Page 24
![COMPUTER SINGLE-BOARD BL4S150](/photos/6/75/67538/20-101-1257_sml.jpg)
20-101-1257
Manufacturer Part Number
20-101-1257
Description
COMPUTER SINGLE-BOARD BL4S150
Manufacturer
Rabbit Semiconductor
Datasheet
1.20-101-1258.pdf
(144 pages)
Specifications of 20-101-1257
Module/board Type
Single Board Computer Module
Product
Modules
Processor Type
Rabbit 4000
Sram
1 MB
Flash
2 MB
Timers
8 bit, 10 bit
Number Of I/os
20
Backup Battery
3 V Lithium Coin Type
Operating Voltage
9 V to 36 V
Board Size
96 mm x 146 mm x 16 mm
Description/function
Computer Module
For Use With/related Products
BL4S150
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
316-1170
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3.2.2 Digital Outputs
The BL4S100 has eight digital outputs, OUT0–OUT7, which can each sink up to 200 mA.
Figure 8 shows a wiring diagram for using the sinking digital outputs.
OUT0–OUT3 are powered by +K1, and OUT4–OUT7 are powered by +K2. +K1 and
+K2 can each be up to 36 V. They don't have to be the same. All the sinking current, which
could be up to 1.6 A, is returned through the GND pin. Be sure to use a suitably sized
ground wire and keep the distance to the power supply as short as possible.
All the digital outputs sink actively. They can be used as low-side drivers, or as an H-bridge
driver. When the BL4S100 is first powered up or reset, all the outputs are disabled, that is,
at a high-impedance state.
Individual digital output channels may be used for PWM/PPM outputs.The use of these
channels for PWM/PPM is described in Section 3.2.2.1.
BL4S100 User’s Manual
For the H bridge, which is shown in Figure 9,
Ka and Kb
easily accomplished by using outputs from the
same bank on one connector.
should be the same
Figure 8. BL4S100 Digital Outputs
W
. This is most
Figure 9. H Bridge
22
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