Chip chip hooray!

Apple APL1021 A9X 64-bit applications processor

Samsung K3RG1G10BM-KGCH 2 GB (16 Gb) LPDDR4 SDRAM memory

SK Hynix H23QEG8VG1ACR-BC 32 GB (256 Gb) NAND flash memory

2 × Broadcom BCM15900B0 (as seen in the iPad Pro 12.9") touchscreen controller

Apple 339S00109 Wi-Fi module

NXP 66V10 (PN66V) NFC controller and 1610A3 charging IC (as seen in iPhone SE/6s/6s Plus) (CBTL1610A3, possibly a display port multiplexer)

InvenSense EMS-A 6-axis gyroscope and accelerometer combo (also found in iPhone SE)