This is an old revision of the document!
FT232RL USB-serial converter packaged in 28-SSOP. Most likely the same die as the FT232RQ (QFN) however this has not been confirmed.
The FT232R has on-board EEPROM for descriptors and a pre-programmed unique serial number, as opposed to most of FTDI's other devices which require external EEPROMs.
We were curious as to whether the FT232R was just a USB MCU like the Microchip MCP2200, or a pure ASIC. The lack of obvious ROM areas suggest that it is indeed an ASIC, estimated to be around the 180nm node.
Map: http://siliconpr0n.org/map/ftdi/ft232rl_bf_neo5x_dirty/
Before decap:
Full die overview
Die copyright
Memory banks. Probably EEPROM on left and SRAM at right.
Logic cell area.
Bond pad.
