The BCM20736S Module Datasheet is available online here: BCM20736S Bluetooth Low Energy SiP Module Technical Reference Manual
Note that the 20736/20737 SOC datasheets are not online yet, but should be in the upcoming weeks (HW wise, they are close to identical to the 20732 SOC datasheet that's online today).
Because all 3 of these devices are identical from a HW perspective, the same HW Interfaces document can be used for all three: WICED™ Smart Hardware Interfaces
