GPS - Screen selection

I´ve been looking at some options for the e-paper LCD panel. Probably the best option, considering price, availability and quality is one from Sharp´s Memory LCD lineup (http://www.sharpmemorylcd.com)

Memory LCD de 2.7" (LS027B7DH01)
Price: $37.16 @ 1pc ($26.80 @ 100pcs)
Product Specification: http://www.sharpmemorylcd.com/resources/LS027B7DH01_Spec.pdf
Mouser link: http://es.mouser.com/ProductDetail/Sharp-Microelectronics/LS027B7DH01/?qs=sGAEpiMZZMvEZpvz4iUm3h4lv3%252bqmbbZ

Connector:

FP12

0.5mm pitch

10 pins

Price: $1.13 @ 1pc ( $0.843 @ 100pcs)

We´ll use http://www.mouser.com/ds/2/307/XF2M_1110-32350.pdf

Power requirements:

We´ll need to provide 5VDC to the panel.

We´ll use a single 5V bus VDDA=VDD.

Panel power requirement is 50uW aprox (5V @ 10uA aprox) with static image and 175uW (5V @35uA) refreshing at 1Hz

Worst case scenario would be 350uW refreshing at 1Hz. As we want to refresh at 2Hz we´ll assume  700uW.

In other words, 5V @ 140uA. 

So the panel would require 3.36mAh (at 5V) to operate 24h. Perhaps 10mAh at the battery (3.7V) considering level conversion efficiency.

Controller requirments:

Panel will happily take data bus at  3.3V

It would need SPI + 2 GPIO from the mcu

MCU SPI SDO -> LCD SI

MCU SPI SCK( 1 MHz )  -> LCD SCLK

MCU SPI CS -> LCD SCS

MCU GPIO1 (with weak pulldown) -> LCD DISP 

MCU GPIO2 (with weak pulldown) -> LCD EXTCOMIN

LCD EXTMODE -> VDD