101-0681 Rabbit Semiconductor, 101-0681 Datasheet - Page 100

• Manufacturer Part Number: 101-0681
• Description: KIT DEVELOPMENT RCM3700 INT'L
• Manufacturer: Rabbit Semiconductor
• Series: RabbitCore 3000r
• Type: MPU Moduler

Specifications of 101-0681

• Contents: RabbitCore Module, Dev. Board, AC Adapter, Cable and Dynamic C® CD-Rom
• Processor To Be Evaluated: Rabbit 3000
• Interface Type: Ethernet
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: - 40 C
• Operating Supply Voltage: 4.75 V to 5.25 V
• For Use With/related Products: RCM3700
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 101-681; 101-681

B.1.5 Analog Features
The RCM3700 Prototyping Board has an onboard ADS7870 A/D converter to demon-
strate the interface capabilities of the Rabbit 3000. The A/D converter multiplexes con-
verted signals from eight single-ended or three differential inputs to alternate Serial Port B
on the Rabbit 3000 (Parallel Port pins PD4 and PD5).
B.1.5.1 A/D Converter Inputs
Figure B-5 shows a pair of A/D converter input circuits. The resistors form an approxi-
mately 10:1 attenuator, and the capacitor filters noise pulses from the A/D converter input.
The A/D converter chip can make either single-ended or differential measurements
depending on the value of the
A/D converter inputs can be 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-2.
RabbitCore RCM3700 User’s Manual
Figure B-5. A/D Converter Inputs
opmode
W
W
parameter in the software function call. Adjacent
98