Available now: Battery backed Real Time Clock for the PandaBoard

[Chris Evans]

CJE Micro's & 4D are pleased to announce:

A plug-in battery backed-up Real Time Clock module with
temperature sensor for the PandaBoard & ES.


Specifications:
Real Time Clock chip: Maxim DS1338
Temperature Sensor: MCP9801
Cell (Battery): CR1220
Crystal Accuracy: 20ppm (better than 1 minute a month)
Battery Capacity: Approximately five years.
Suitable for original PandaBoard & PandaBoard ES.
Plugs into 'Expansion connector A'

Includes:
Real Time Clock Module with Temperature Sensor
CR1220 Battery (unfitted)
Fitting Instructions

Linux Software:
The standard DS1307 RTC driver will work with the module

RISC OS support:
RISC OS support for the RTC is built in to all RISC OS 5.19 builds after October 2012
Software to read from the temperature sensor is available from our website

Price & Availability:
19.00 GBP Small quantities are available from stock, a larger
quantity should be available next month.

To order go to:
http://www.cjemicros.co.uk/micros/individual/newprodpages/prodinfo.php?prodcode=4D-PANDA-RTC

Postage:
UK: Included in price
Europe: £2.00 extra items £0.50 each e.g. Quantity 3 = £2+ (2*£0.50) = £3.00
Rest of the World: £3.00 extra items £0.60 each e.g. Quantity 3 = £3+ (2*£0.60) = £4.20

NB. This plugs onto "Expansion Connector A", which will need to be
fitted to your PandaBoard. If you don't have this fitted, you can purchase a set of pins to solder in at: http://www.cjemicros.co.uk/micros/individual/newprodpages/prodinfo.php?prodcode=VAR-2X14M

We can also supply the Real Time Clock bundled with the expansion
pins if you haven't fitted them yet:
http://www.cjemicros.co.uk/micros/individual/newprodpages/prodinfo.php?prodcode=4D-PANDA-RTCPINS

Retail sales are made through Fourth Dimension '4D'. 4D is not VAT registered so no VAT to add.
Trade and volume enquiries welcome.

More PandaBoard products coming soon!

CJE Micro's & 4D 78 Brighton Road, Worthing, West Sussex, BN11 2EN. UK
+44 (0)1903 523222
sa...@cjemicros.co.uk     http://www.cjemicros.co.uk/

For our main PandaBoard related products please see:
http://www.cjemicros.co.uk/micros/prices/categories/panda.shtml

Chris Evans

[Victor Vargas de Arce]

Great news!!!

Just a question, does this leave the expansion header useless for other purposes? in the images I see that the connector uses all the pins.

[Chris Evans]

We designed it so that as much of the expansion header is available as possible with a mixture of direct accessibility and pass through.

The board plugs into pins 1-6 and 23-28
Pins 7-22 can be accessed by plugging in connectors of the type reset switches normally use.
Our board has a pass through/ancillary connector (J3) with:
1 GND
2 SDA (level shifted to 5V)
3 SCL (level shifted to 5V)
4 5V
5 SQW/OUT from clock (DS1338) at 5V level
6 ALERT from temperature sensor (MCP9801) at 5v level
7 Pin 3 (GPMC_AD7/SDMMC2_DAT7) via a 150R/Q1 for possible filing system activity LED (active low)
8 5V for GPIO LED if in use

If anyone wants us to on the next batch we could fit a two pin connector at the power end so that pin 3 to 6 are not blocked off.
We know the board will fit inside a Tigal case and being 1.1" high is no higher than the USB/Network socket so should also fit other cases including Special Computing's acrylic case.

Chris