A total of up to 40 analog inputs are supported.
Three high-speed 12-bit parallel ADC chips (AD7852)
can be installed, each chip providing 8 channels
analog inputs (for a total of 24 channels), with up
to 300K samples per second.
The AD7852 includes sample-and-hold, a precision
internal reference, and has an input range of 0-5 V.
Two 16-bit ADC (ADS8344, TI) chips provides a total
of 16 single-ended or 8 differential analog inputs
(0-5V, or 0-REF) with 65536 counts of resolution and
a max sample rate up to 10 KHz.
The RA features fast execution times through
80MHz 186 CPU, 16-bit Flash and 16-bit
battery-backed SRAM. A 50-pin CompactFlash
receptacle can be installed to allow access to mass
storage CompactFlash cards (up to 1GB). Users can
easily add mass data storage to their embedded
application. FAT12/16 filesystem support is included
within the software development package.
Three RS232 serial ports are available by
default: a dual UART (SCC2692) and a single CPU
internal UART(default as DEBUG port). All UARTs have
deep FIFOs to minimize the potential of receiver
overrun or to reduce interrupt overhead. The UART
also incorporate 9-bit mode for multi-processor
A single UART can be buffered by RS232 (as
default), RS485, or RS422 (for an additional
charge). 40+ TTL I/O lines are free to use,
including 24 bi-directional I/Os from the PPI
(82C55), 32 multifunctional CPU internal PIOs, and
TTL I/Os from the DUART. A parallel DAC (DA7625, 5
ms, 4 ch, 12-bit, 0-2.5V) and 2 serial DACs
(DAC7612, 2 ch, 12-bit, 0-4.095V) can be installed
to support a total of up to 8 analog outputs.
Three CPU internal timer/counters can be used to
count or time external events, or to generate
non-repetitive or variable-duty-cycle waveforms as
PWM outputs. Additional three 16-bit programmable
counters (71054, NEC), each with its own clock
input, gate input, and output, can be clocked up to
A serial real time clock (DS1337, Dallas) is a low
power clock/calendar with two time-of-day alarms.
Optional high efficient Switching Regulator (LM2575)
can be installed to allow power input from 8V to 30V
DC without generating heat. It also provides an
external control pin to shutdown 5V and enter ?A
standby mode and wake-up by active-low signal.
Two versions of the RA are available: the RA80 is
based on the 80 MHz R1100, and the RA40 is based on
the similar 40 MHz Am186ER.
There are other similar boards. The new SensorCore
controller is also clocked at 80 MHz, and can come
configured with up to 48 channels of 24-bit ADC. The
SensorCore also features integrated CompactFlash and
Ethernet, making it the ideal solution for any
analog data acquisition project.
The slightly smaller R-Engine is ideal for OEM
applications that need only a core processing unit;
and the R-Drive is a larger full-featured board that
supports more industrial I/O, and provides on-board
Ethernet. The FlashCore-B is the choice for embedded
applications that need a small OEM core-component
with CompactFlash and data acquisition capabilities.
- Measures 3.6x3.5x0.3 inches
- 16-bit CPU (Am186ER), 40 MHz, w/ 32 KB
- 16-bit CPU (RDC1100), 80 Mhz
- 160/20 mA at 5V, normal/power-save
- 256 KW 16-bit Flash, 256 KW 16-bit SRAM
optional, 512-byte EEPROM
- 40+ TTL I/Os, battery, real-time clock.
- 3 RS-232, PWM, counters
- (3x) 8 ch. 12-bit parallel (high-speed) ADC
(AD7852), and (2x) 8 ch. 16-bit ADC (ADS8344)
- 4 parallel DAC (DA7625), and 2 serial DAC
- CompactFlash interface
- Switching regulator
Expansion boards: Kpad, MemCard,