Development Boards For CF2

Persistor provides three development boards for getting started with the Persistor CF2.

A development board is necessary for power and communication connections, as well as for providing a backup battery for the CF2 real time clock and to demonstrate the <10uA suspend mode. Persistor's development boards also provide some through-hole breadboarding areas for prototyping circuits and a connector for connecting to analog inputs.

R212

Shown Above: R212

The R212 is the simplest development board for the CF2.

A MAX146 is installed to provide 8 channels of 12bit analog to digital conversion. The MAX146 is an SPI device and the CF2 A-D examples show how to communicate with it on Persistor's QPB (Queued PicoBUS), turn it off and manage the CF2 at 1mA idle, read channels one at a time or as a block, burst read at 80,000 samples per second, sample slowly with attention to power, and finally how to write buffered data to a file on the CompactFlash memory card.

The MAX146 is also compatible with PicoDAQ, a ready to run, configurable A/D logging program.

3" X 5" base board style
Standard with snap-in standoffs in corners
Prototype section may be cut away
Backup Battery
Buttons for RESET, PBM and WAKE
Red/Green LED
Connector for CAB-COM-RCP communications cable
Connector for CAB-POW-RCP power cable
8 chan 12 bit A-D, 0 to 2.5 volt input
Connector available for A-D connections



R216AU

Shown Above: R216AU

The R216AU is built from the same circuit board as the R212 but instead of the MAX146, a Texas Instruments (Burr Brown) ADS8344 16 bit A/D is installed. The same A-D examples are used and a different compile of PicoDAQ works with it.

The ADS8344 is also the necessary A/D for running the SPIIIDAQ foreground function, which is a highly optimized piece of code that permits the CF2 to continuously stream up to 64,000 samples per second to CompactFlash (Max 2GB per file).

AU stands for Auxiliary UARTs. The CF2's 14 TPU ports can be easily configured as independent UART channels and the R216AU has an RS232 driver and 3.5mm jacks installed to simplify the use of four TPU ports as two pairs of auxiliary UARTs. A suite of examples demonstrate configuring the TPU UARTs, replacing the SCI console, and daisy chaining the UARTs

3" X 5" base board style
Standard with snap-in standoffs in corners
Prototype section may be cut away
Backup Battery
Buttons for RESET, PBM and WAKE
Red/Green LED
Connector for CAB-COM-RCP communications cable
Connector for CAB-POW-RCP power cable
Connectors for two CAB-COM2-RCP auxiliary UART cables
Auxiliary UART pairs driven at RS232 levels
8 chan 16 bit A-D, 0 to 2.5 volt input
Connector available for A-D connections



MRCP (V1, V2 or V3)

Shown Above: MRCP-V3

The MRCP is optimized for deploying the CF2 in a tube. There are three versions available.

V1 uses custom low profile, high retention, machine screw connectors for the smallest possible deployment. The MRCP-V1 and CF2 without a CompactFlash card will fit in a 1.75" tube. With a CompactFlash card, the set will fit inside a 2.35" tube. The connectors are stackable but can be clipped off if stacking is not desired. Because the V1 connectors are delicate, and nearly impossible to disconnect from the CF2, we recommend V2 or V3 unless the minimum height is necessary.

V2 and V3 use robust Samtec connectors that match the CF2 0.025" square pins with gold contacts. This option is easier to handle and less expensive but adds about 1/16" to the height of the CF2/MRCP stack. V2 uses stacking connectors and V3 uses non-stacking connectors.

All versions of the MRCP use the 8 channel 16 bit ADS8344 compatible with the A-D examples, PicoDAQ and SPIIIDAQ.

The CF2's spare RS232 driver is used to present one pair of TPU channels for use as an auxiliary UART pair.

1.375" X 6"
Optimized for deploying the CF2 in a tube < 3" ID
Three connector types available - stacking / non-stacking
Prototype area may be cut off and mated to connectors
Backup Battery
Buttons for RESET, PBM and WAKE
Connectors for two CAB-COM2-RCP cables
Main SCI UART and one TPU UART, both at RS232 levels
8 chan 16 bit A-D, 0 to 2.5 volt input
Connector available for A-D connections



Shown Below:
CF2-9599 seated in an R216AU. The main SCI UART uses the ribbon cable and the auxiliary UARTs exit left.
CF2-9600 seated in an R212. The auxiliary UART hardware is not installed on the R212.
CF2-9601 seated in an MRCP-V3. Both the main SCI UART and the single auxiliary UART cable exit left.