20-101-1093 Rabbit Semiconductor, 20-101-1093 Datasheet - Page 94
![RCM4110 RABBITCORE](/photos/6/74/67458/20-101-1093_sml.jpg)
20-101-1093
Manufacturer Part Number
20-101-1093
Description
RCM4110 RABBITCORE
Manufacturer
Rabbit Semiconductor
Datasheet
1.20-101-1093.pdf
(112 pages)
Specifications of 20-101-1093
Module/board Type
MPU Core Module
Product
Microcontroller Modules
Core Processor
Rabbit 4000
Flash
512 KBytes
Operating Supply Voltage
3 to 3.6 V
Board Size
48 mm x 36 mm x 12 mm
Cpu Core
Rabbit 4000
For Use With/related Products
RCM4110
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
316-1140
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B.4.3 Analog Features (RCM4100 only)
The Prototyping Board has typical support circuitry installed to complement the ADS7870
A/D converter on the RCM4100 model (the A/D converter is not available on the
RCM4110 and the RCM4120).
B.4.3.1 A/D Converter Inputs
Figure B-6 shows a pair of A/D converter input circuits. The resistors form an approx. 11:1
attenuator, and the capacitor filters noise pulses from the A/D converter input. The 470 Ω
inline jumpers allow other configurations (see Table B-6) and provide digital isolation when
you are not using an A/D converter (Parallel Port D is available). These jumpers optimize
using RabbitCore modules with or without A/D converters—if you are designing your own
circuit, the best performance for the A/D converter would be realized with 0 Ω resistors.
The A/D converter chip can make either single-ended or differential measurements
depending on the value of the
A/D converter inputs are paired to make differential measurements. The default setup on
the Prototyping Board is to measure only positive voltages for the ranges listed in Table B-3.
90
Min. Voltage
(V)
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
Table B-3. Positive A/D Converter Input Voltage Ranges
(with prescaler)
Max. Voltage
+22.528
+11.264
+5.632
+4.506
+2.816
+2.253
+1.408
+1.126
(V)
Figure B-6. A/D Converter Inputs
W
W
opmode
parameter in the software function call. Adjacent
Multiplier
Gain
×10
×16
×20
×1
×2
×4
×5
×8
W
A/D Converter
Actual Gain
14.4
1.8
3.6
4.5
7.2
9.0
18
1
RabbitCore RCM4100
Resolution
(mV)
1.375
1.100
0.688
0.550
2.75
2.20
5.5
11
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