Even more chips reveal themselves on the back:

SK Hynix H9CCNNN8JTALAR LPDDR3 SDRAM 4 x 1 GB for 4 GB total

SK Hynix H5TC4G63CFR 4 Gb (512 MB) low power synchronous DRAM

Broadcom BCM15700A2, appears to be a wireless networking chipset

Macronix MX25L6473E serial multi I/O 64 Mb flash memory

Texas Instruments/Stellaris LM4FS1EH SMC controller

Texas Instruments TPS51980A synchronous buck controller

Intersil 958 26AHRZ N450MT and SMSC EMC1704-2 Current/DC Power Sensor with Temperature Monitoring