itron SMART TFT Hardware   General Overview + Connector Pin Assignment  
             
Interfaces Memory Accessories
RS232 SD Card Audio
RS485 NAND CANBUS
Async EEPROM Rotary Encoder
SPI USB Host
I2C Design Ethernet
USB Mounting SD Card
External Key + I/O RFI Gaskets
ADC ESD Cables
  PWM Temperature Battery Holder
  BUZZ Precautions  


Battery

The battery holder now supports CR2032 non rechargeable cells providing ~1.5years life.
A 2 hole connector position BATT1 allows a wired battery to be fitted or a circuit for a rechargeable device.Please do not solder or hot glue batteries to the PCB as this will dramatically reduce the battery life.
Batteries are not supplied due to restrictions on shipping.

Please ensure small solder domes are placed on the 3 pads under the holder before attaching the holder to ensure robust battery connection.


CR2032 Operational to replace CR1216
 

   
Update Information

 Version

 Title

Date  

 Details

49.44

 Problem with reset affecting modules with battery fitted

10 Oct 13 

Show

A problem can occur that results in the module being unable to power up correctly. This is related to the RTC and only affects modules with a battery (or external VBATT supply).

If a battery is attached and power down occurs when a Real Time Clock interrupt is pending, the outstanding interrupt is retained in battery backed RAM.
When re-powering the module, the pending RTC interrupt is triggered before initialisation of the RTC registers causing a lock up.

The solution was to add code to clear any pending RTC interrupts during initialisation.

Fixed in
boot.bin V00.24
nandboot.bin V00.30